mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-25 08:42:39 +00:00
lavc: add a new bitstream filtering API
Deprecate the current bitstream filtering API.
This commit is contained in:
parent
a2d1922bde
commit
33d18982fa
2
configure
vendored
2
configure
vendored
@ -2517,7 +2517,6 @@ ENCODER_LIST=$(find_things encoder ENC libavcodec/allcodecs.c)
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DECODER_LIST=$(find_things decoder DEC libavcodec/allcodecs.c)
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HWACCEL_LIST=$(find_things hwaccel HWACCEL libavcodec/allcodecs.c)
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PARSER_LIST=$(find_things parser PARSER libavcodec/allcodecs.c)
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BSF_LIST=$(find_things bsf BSF libavcodec/allcodecs.c)
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MUXER_LIST=$(find_things muxer _MUX libavformat/allformats.c)
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DEMUXER_LIST=$(find_things demuxer DEMUX libavformat/allformats.c)
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OUTDEV_LIST=$(find_things outdev OUTDEV libavdevice/alldevices.c)
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@ -2531,6 +2530,7 @@ find_things_extern(){
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sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
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}
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BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
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PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
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ALL_COMPONENTS="
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@ -13,6 +13,10 @@ libavutil: 2015-08-28
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API changes, most recent first:
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2016-xx-xx - xxxxxxx - lavc 57.15.0 - avcodec.h
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Add a new bitstream filtering API working with AVPackets.
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Deprecate the old bistream filtering API.
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2016-xx-xx - xxxxxxx - lavfi 6.3.0 - avfilter.h
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Add AVFilterContext.hw_device_ctx.
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@ -19,6 +19,8 @@ OBJS = allcodecs.o \
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avpicture.o \
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bitstream.o \
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bitstream_filter.o \
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bitstream_filters.o \
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bsf.o \
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codec_desc.o \
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d3d11va.o \
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dirac.o \
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@ -21,6 +21,7 @@
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#include "avcodec.h"
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#include "aacadtsdec.h"
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#include "bsf.h"
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#include "put_bits.h"
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#include "get_bits.h"
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#include "mpeg4audio.h"
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@ -34,65 +35,76 @@ typedef struct AACBSFContext {
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* This filter creates an MPEG-4 AudioSpecificConfig from an MPEG-2/4
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* ADTS header and removes the ADTS header.
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*/
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static int aac_adtstoasc_filter(AVBitStreamFilterContext *bsfc,
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AVCodecContext *avctx, const char *args,
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uint8_t **poutbuf, int *poutbuf_size,
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const uint8_t *buf, int buf_size,
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int keyframe)
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static int aac_adtstoasc_filter(AVBSFContext *bsfc, AVPacket *out)
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{
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AACBSFContext *ctx = bsfc->priv_data;
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GetBitContext gb;
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PutBitContext pb;
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AACADTSHeaderInfo hdr;
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AVPacket *in;
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int ret;
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AACBSFContext *ctx = bsfc->priv_data;
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ret = ff_bsf_get_packet(bsfc, &in);
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if (ret < 0)
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return ret;
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init_get_bits(&gb, buf, AAC_ADTS_HEADER_SIZE*8);
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if (in->size < AAC_ADTS_HEADER_SIZE)
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goto packet_too_small;
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*poutbuf = (uint8_t*) buf;
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*poutbuf_size = buf_size;
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init_get_bits(&gb, in->data, AAC_ADTS_HEADER_SIZE * 8);
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if (avctx->extradata)
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if (show_bits(&gb, 12) != 0xfff)
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return 0;
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if (bsfc->par_in->extradata && show_bits(&gb, 12) != 0xfff)
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goto finish;
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if (avpriv_aac_parse_header(&gb, &hdr) < 0) {
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av_log(avctx, AV_LOG_ERROR, "Error parsing ADTS frame header!\n");
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return AVERROR_INVALIDDATA;
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av_log(bsfc, AV_LOG_ERROR, "Error parsing ADTS frame header!\n");
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ret = AVERROR_INVALIDDATA;
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goto fail;
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}
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if (!hdr.crc_absent && hdr.num_aac_frames > 1) {
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avpriv_report_missing_feature(avctx,
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avpriv_report_missing_feature(bsfc,
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"Multiple RDBs per frame with CRC");
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return AVERROR_PATCHWELCOME;
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ret = AVERROR_PATCHWELCOME;
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goto fail;
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}
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buf += AAC_ADTS_HEADER_SIZE + 2*!hdr.crc_absent;
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buf_size -= AAC_ADTS_HEADER_SIZE + 2*!hdr.crc_absent;
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in->size -= AAC_ADTS_HEADER_SIZE + 2 * !hdr.crc_absent;
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if (in->size <= 0)
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goto packet_too_small;
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in->data += AAC_ADTS_HEADER_SIZE + 2 * !hdr.crc_absent;
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if (!ctx->first_frame_done) {
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int pce_size = 0;
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uint8_t pce_data[MAX_PCE_SIZE];
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uint8_t *extradata;
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if (!hdr.chan_config) {
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init_get_bits(&gb, buf, buf_size * 8);
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init_get_bits(&gb, in->data, in->size * 8);
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if (get_bits(&gb, 3) != 5) {
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avpriv_report_missing_feature(avctx,
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avpriv_report_missing_feature(bsfc,
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"PCE-based channel configuration "
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"without PCE as first syntax "
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"element");
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return AVERROR_PATCHWELCOME;
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ret = AVERROR_PATCHWELCOME;
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goto fail;
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}
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init_put_bits(&pb, pce_data, MAX_PCE_SIZE);
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pce_size = avpriv_copy_pce_data(&pb, &gb)/8;
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flush_put_bits(&pb);
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buf_size -= get_bits_count(&gb)/8;
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buf += get_bits_count(&gb)/8;
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in->size -= get_bits_count(&gb)/8;
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in->data += get_bits_count(&gb)/8;
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}
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avctx->extradata_size = 2 + pce_size;
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avctx->extradata = av_mallocz(avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
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if (!avctx->extradata)
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return AVERROR(ENOMEM);
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init_put_bits(&pb, avctx->extradata, avctx->extradata_size);
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extradata = av_packet_new_side_data(in, AV_PKT_DATA_NEW_EXTRADATA,
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2 + pce_size);
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if (!extradata) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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init_put_bits(&pb, extradata, 2 + pce_size);
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put_bits(&pb, 5, hdr.object_type);
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put_bits(&pb, 4, hdr.sampling_index);
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put_bits(&pb, 4, hdr.chan_config);
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@ -101,20 +113,42 @@ static int aac_adtstoasc_filter(AVBitStreamFilterContext *bsfc,
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put_bits(&pb, 1, 0); //is not extension
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flush_put_bits(&pb);
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if (pce_size) {
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memcpy(avctx->extradata + 2, pce_data, pce_size);
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memcpy(extradata + 2, pce_data, pce_size);
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}
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ctx->first_frame_done = 1;
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}
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*poutbuf = (uint8_t*) buf;
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*poutbuf_size = buf_size;
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finish:
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av_packet_move_ref(out, in);
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av_packet_free(&in);
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return 0;
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packet_too_small:
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av_log(bsfc, AV_LOG_ERROR, "Input packet too small\n");
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ret = AVERROR_INVALIDDATA;
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fail:
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av_packet_free(&in);
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return ret;
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}
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static int aac_adtstoasc_init(AVBSFContext *ctx)
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{
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av_freep(&ctx->par_out->extradata);
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ctx->par_out->extradata_size = 0;
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return 0;
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}
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AVBitStreamFilter ff_aac_adtstoasc_bsf = {
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"aac_adtstoasc",
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sizeof(AACBSFContext),
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aac_adtstoasc_filter,
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static const enum AVCodecID codec_ids[] = {
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AV_CODEC_ID_AAC, AV_CODEC_ID_NONE,
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};
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const AVBitStreamFilter ff_aac_adtstoasc_bsf = {
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.name = "aac_adtstoasc",
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.priv_data_size = sizeof(AACBSFContext),
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.init = aac_adtstoasc_init,
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.filter = aac_adtstoasc_filter,
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.codec_ids = codec_ids,
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};
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@ -58,13 +58,6 @@
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av_register_codec_parser(&ff_##x##_parser); \
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}
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#define REGISTER_BSF(X, x) \
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{ \
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extern AVBitStreamFilter ff_##x##_bsf; \
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if (CONFIG_##X##_BSF) \
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av_register_bitstream_filter(&ff_##x##_bsf); \
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}
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void avcodec_register_all(void)
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{
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static int initialized;
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@ -536,18 +529,4 @@ void avcodec_register_all(void)
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REGISTER_PARSER(VORBIS, vorbis);
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REGISTER_PARSER(VP3, vp3);
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REGISTER_PARSER(VP8, vp8);
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/* bitstream filters */
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REGISTER_BSF(AAC_ADTSTOASC, aac_adtstoasc);
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REGISTER_BSF(CHOMP, chomp);
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REGISTER_BSF(DUMP_EXTRADATA, dump_extradata);
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REGISTER_BSF(H264_MP4TOANNEXB, h264_mp4toannexb);
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REGISTER_BSF(HEVC_MP4TOANNEXB, hevc_mp4toannexb);
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REGISTER_BSF(IMX_DUMP_HEADER, imx_dump_header);
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REGISTER_BSF(MJPEG2JPEG, mjpeg2jpeg);
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REGISTER_BSF(MJPEGA_DUMP_HEADER, mjpega_dump_header);
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REGISTER_BSF(MOV2TEXTSUB, mov2textsub);
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REGISTER_BSF(NOISE, noise);
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REGISTER_BSF(REMOVE_EXTRADATA, remove_extradata);
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REGISTER_BSF(TEXT2MOVSUB, text2movsub);
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}
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@ -4692,35 +4692,221 @@ int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes);
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*/
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int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes);
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#if FF_API_OLD_BSF
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typedef struct AVBitStreamFilterContext {
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void *priv_data;
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struct AVBitStreamFilter *filter;
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AVCodecParserContext *parser;
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struct AVBitStreamFilterContext *next;
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} AVBitStreamFilterContext;
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#endif
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typedef struct AVBSFInternal AVBSFInternal;
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/**
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* The bitstream filter state.
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*
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* This struct must be allocated with av_bsf_alloc() and freed with
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* av_bsf_free().
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*
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* The fields in the struct will only be changed (by the caller or by the
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* filter) as described in their documentation, and are to be considered
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* immutable otherwise.
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*/
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typedef struct AVBSFContext {
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/**
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* A class for logging and AVOptions
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*/
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const AVClass *av_class;
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/**
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* The bitstream filter this context is an instance of.
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*/
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const struct AVBitStreamFilter *filter;
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/**
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* Opaque libavcodec internal data. Must not be touched by the caller in any
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* way.
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*/
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AVBSFInternal *internal;
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/**
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* Opaque filter-specific private data. If filter->priv_class is non-NULL,
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* this is an AVOptions-enabled struct.
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*/
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void *priv_data;
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/**
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* Parameters of the input stream. Set by the caller before av_bsf_init().
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*/
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AVCodecParameters *par_in;
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/**
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* Parameters of the output stream. Set by the filter in av_bsf_init().
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*/
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AVCodecParameters *par_out;
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/**
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* The timebase used for the timestamps of the input packets. Set by the
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* caller before av_bsf_init().
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*/
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AVRational time_base_in;
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/**
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* The timebase used for the timestamps of the output packets. Set by the
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* filter in av_bsf_init().
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*/
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AVRational time_base_out;
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} AVBSFContext;
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typedef struct AVBitStreamFilter {
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const char *name;
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/**
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* A list of codec ids supported by the filter, terminated by
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* AV_CODEC_ID_NONE.
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* May be NULL, in that case the bitstream filter works with any codec id.
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*/
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const enum AVCodecID *codec_ids;
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/**
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* A class for the private data, used to declare bitstream filter private
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* AVOptions. This field is NULL for bitstream filters that do not declare
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* any options.
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*
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* If this field is non-NULL, the first member of the filter private data
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* must be a pointer to AVClass, which will be set by libavcodec generic
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* code to this class.
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*/
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const AVClass *priv_class;
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/*****************************************************************
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* No fields below this line are part of the public API. They
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* may not be used outside of libavcodec and can be changed and
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* removed at will.
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* New public fields should be added right above.
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*****************************************************************
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*/
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int priv_data_size;
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int (*filter)(AVBitStreamFilterContext *bsfc,
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AVCodecContext *avctx, const char *args,
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uint8_t **poutbuf, int *poutbuf_size,
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const uint8_t *buf, int buf_size, int keyframe);
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void (*close)(AVBitStreamFilterContext *bsfc);
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struct AVBitStreamFilter *next;
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int (*init)(AVBSFContext *ctx);
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int (*filter)(AVBSFContext *ctx, AVPacket *pkt);
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void (*close)(AVBSFContext *ctx);
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} AVBitStreamFilter;
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#if FF_API_OLD_BSF
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/**
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* @deprecated the old bitstream filtering API (using AVBitStreamFilterContext)
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* is deprecated. Use the new bitstream filtering API (using AVBSFContext).
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*/
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attribute_deprecated
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void av_register_bitstream_filter(AVBitStreamFilter *bsf);
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attribute_deprecated
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AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
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attribute_deprecated
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int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
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AVCodecContext *avctx, const char *args,
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uint8_t **poutbuf, int *poutbuf_size,
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const uint8_t *buf, int buf_size, int keyframe);
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attribute_deprecated
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void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
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attribute_deprecated
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AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f);
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#endif
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/**
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* @return a bitstream filter with the specified name or NULL if no such
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* bitstream filter exists.
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*/
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const AVBitStreamFilter *av_bsf_get_by_name(const char *name);
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/**
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* Iterate over all registered bitstream filters.
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*
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* @param opaque a pointer where libavcodec will store the iteration state. Must
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* point to NULL to start the iteration.
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*
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* @return the next registered bitstream filter or NULL when the iteration is
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* finished
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*/
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const AVBitStreamFilter *av_bsf_next(void **opaque);
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/**
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* Allocate a context for a given bitstream filter. The caller must fill in the
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* context parameters as described in the documentation and then call
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* av_bsf_init() before sending any data to the filter.
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*
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* @param filter the filter for which to allocate an instance.
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* @param ctx a pointer into which the pointer to the newly-allocated context
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* will be written. It must be freed with av_bsf_free() after the
|
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* filtering is done.
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*
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* @return 0 on success, a negative AVERROR code on failure
|
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*/
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int av_bsf_alloc(const AVBitStreamFilter *filter, AVBSFContext **ctx);
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/**
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* Prepare the filter for use, after all the parameters and options have been
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* set.
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*/
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int av_bsf_init(AVBSFContext *ctx);
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/**
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* Submit a packet for filtering.
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*
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* After sending each packet, the filter must be completely drained by calling
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* av_bsf_receive_packet() repeatedly until it returns AVERROR(EAGAIN) or
|
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* AVERROR_EOF.
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*
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* @param pkt the packet to filter. The bitstream filter will take ownership of
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* the packet and reset the contents of pkt. pkt is not touched if an error occurs.
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* This parameter may be NULL, which signals the end of the stream (i.e. no more
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* packets will be sent). That will cause the filter to output any packets it
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* may have buffered internally.
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*
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* @return 0 on success, a negative AVERROR on error.
|
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*/
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int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt);
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|
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/**
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* Retrieve a filtered packet.
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*
|
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* @param[out] pkt this struct will be filled with the contents of the filtered
|
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* packet. It is owned by the caller and must be freed using
|
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* av_packet_unref() when it is no longer needed.
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* This parameter should be "clean" (i.e. freshly allocated
|
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* with av_packet_alloc() or unreffed with av_packet_unref())
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* when this function is called. If this function returns
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* successfully, the contents of pkt will be completely
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* overwritten by the returned data. On failure, pkt is not
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* touched.
|
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*
|
||||
* @return 0 on success. AVERROR(EAGAIN) if more packets need to be sent to the
|
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* filter (using av_bsf_send_packet()) to get more output. AVERROR_EOF if there
|
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* will be no further output from the filter. Another negative AVERROR value if
|
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* an error occurs.
|
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*
|
||||
* @note one input packet may result in several output packets, so after sending
|
||||
* a packet with av_bsf_send_packet(), this function needs to be called
|
||||
* repeatedly until it stops returning 0. It is also possible for a filter to
|
||||
* output fewer packets than were sent to it, so this function may return
|
||||
* AVERROR(EAGAIN) immediately after a successful av_bsf_send_packet() call.
|
||||
*/
|
||||
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt);
|
||||
|
||||
/**
|
||||
* Free a bitstream filter context and everything associated with it; write NULL
|
||||
* into the supplied pointer.
|
||||
*/
|
||||
void av_bsf_free(AVBSFContext **ctx);
|
||||
|
||||
/**
|
||||
* Get the AVClass for AVBSFContext. It can be used in combination with
|
||||
* AV_OPT_SEARCH_FAKE_OBJ for examining options.
|
||||
*
|
||||
* @see av_opt_find().
|
||||
*/
|
||||
const AVClass *av_bsf_get_class(void);
|
||||
|
||||
/* memory */
|
||||
|
||||
|
@ -21,56 +21,70 @@
|
||||
#include <string.h>
|
||||
|
||||
#include "avcodec.h"
|
||||
|
||||
#include "libavutil/internal.h"
|
||||
#include "libavutil/mem.h"
|
||||
|
||||
static AVBitStreamFilter *first_bitstream_filter = NULL;
|
||||
#if FF_API_OLD_BSF
|
||||
FF_DISABLE_DEPRECATION_WARNINGS
|
||||
|
||||
AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f)
|
||||
{
|
||||
if (f)
|
||||
return f->next;
|
||||
else
|
||||
return first_bitstream_filter;
|
||||
const AVBitStreamFilter *filter = NULL;
|
||||
void *opaque = NULL;
|
||||
|
||||
while (filter != f)
|
||||
filter = av_bsf_next(&opaque);
|
||||
|
||||
return av_bsf_next(&opaque);
|
||||
}
|
||||
|
||||
void av_register_bitstream_filter(AVBitStreamFilter *bsf)
|
||||
{
|
||||
bsf->next = first_bitstream_filter;
|
||||
first_bitstream_filter = bsf;
|
||||
}
|
||||
|
||||
typedef struct BSFCompatContext {
|
||||
AVBSFContext *ctx;
|
||||
} BSFCompatContext;
|
||||
|
||||
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name)
|
||||
{
|
||||
AVBitStreamFilter *bsf = first_bitstream_filter;
|
||||
AVBitStreamFilterContext *ctx = NULL;
|
||||
BSFCompatContext *priv = NULL;
|
||||
const AVBitStreamFilter *bsf;
|
||||
|
||||
while (bsf) {
|
||||
if (!strcmp(name, bsf->name)) {
|
||||
AVBitStreamFilterContext *bsfc =
|
||||
av_mallocz(sizeof(AVBitStreamFilterContext));
|
||||
if (!bsfc)
|
||||
return NULL;
|
||||
bsfc->filter = bsf;
|
||||
bsfc->priv_data = NULL;
|
||||
if (bsf->priv_data_size) {
|
||||
bsfc->priv_data = av_mallocz(bsf->priv_data_size);
|
||||
if (!bsfc->priv_data) {
|
||||
av_freep(&bsfc);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
return bsfc;
|
||||
}
|
||||
bsf = bsf->next;
|
||||
}
|
||||
bsf = av_bsf_get_by_name(name);
|
||||
if (!bsf)
|
||||
return NULL;
|
||||
|
||||
ctx = av_mallocz(sizeof(*ctx));
|
||||
if (!ctx)
|
||||
return NULL;
|
||||
|
||||
priv = av_mallocz(sizeof(*priv));
|
||||
if (!priv)
|
||||
goto fail;
|
||||
|
||||
|
||||
ctx->filter = bsf;
|
||||
ctx->priv_data = priv;
|
||||
|
||||
return ctx;
|
||||
|
||||
fail:
|
||||
if (priv)
|
||||
av_bsf_free(&priv->ctx);
|
||||
av_freep(&priv);
|
||||
av_freep(&ctx);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void av_bitstream_filter_close(AVBitStreamFilterContext *bsfc)
|
||||
{
|
||||
if (bsfc->filter->close)
|
||||
bsfc->filter->close(bsfc);
|
||||
BSFCompatContext *priv = bsfc->priv_data;
|
||||
|
||||
av_bsf_free(&priv->ctx);
|
||||
av_freep(&bsfc->priv_data);
|
||||
av_parser_close(bsfc->parser);
|
||||
av_free(bsfc);
|
||||
}
|
||||
|
||||
@ -79,8 +93,71 @@ int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
|
||||
uint8_t **poutbuf, int *poutbuf_size,
|
||||
const uint8_t *buf, int buf_size, int keyframe)
|
||||
{
|
||||
*poutbuf = (uint8_t *)buf;
|
||||
*poutbuf_size = buf_size;
|
||||
return bsfc->filter->filter(bsfc, avctx, args, poutbuf, poutbuf_size,
|
||||
buf, buf_size, keyframe);
|
||||
BSFCompatContext *priv = bsfc->priv_data;
|
||||
AVPacket pkt = { 0 };
|
||||
int ret;
|
||||
|
||||
if (!priv->ctx) {
|
||||
ret = av_bsf_alloc(bsfc->filter, &priv->ctx);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = avcodec_parameters_from_context(priv->ctx->par_in, avctx);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
priv->ctx->time_base_in = avctx->time_base;
|
||||
|
||||
ret = av_bsf_init(priv->ctx);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (priv->ctx->par_out->extradata_size) {
|
||||
av_freep(&avctx->extradata);
|
||||
avctx->extradata_size = 0;
|
||||
avctx->extradata = av_mallocz(priv->ctx->par_out->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
|
||||
if (!avctx->extradata)
|
||||
return AVERROR(ENOMEM);
|
||||
memcpy(avctx->extradata, priv->ctx->par_out->extradata,
|
||||
priv->ctx->par_out->extradata_size);
|
||||
avctx->extradata_size = priv->ctx->par_out->extradata_size;
|
||||
}
|
||||
}
|
||||
|
||||
pkt.data = buf;
|
||||
pkt.size = buf_size;
|
||||
|
||||
ret = av_bsf_send_packet(priv->ctx, &pkt);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
*poutbuf = NULL;
|
||||
*poutbuf_size = 0;
|
||||
|
||||
ret = av_bsf_receive_packet(priv->ctx, &pkt);
|
||||
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
|
||||
return 0;
|
||||
else if (ret < 0)
|
||||
return ret;
|
||||
|
||||
*poutbuf = av_malloc(pkt.size + AV_INPUT_BUFFER_PADDING_SIZE);
|
||||
if (!*poutbuf) {
|
||||
av_packet_unref(&pkt);
|
||||
return AVERROR(ENOMEM);
|
||||
}
|
||||
|
||||
*poutbuf_size = pkt.size;
|
||||
memcpy(*poutbuf, pkt.data, pkt.size);
|
||||
|
||||
av_packet_unref(&pkt);
|
||||
|
||||
/* drain all the remaining packets we cannot return */
|
||||
while (ret >= 0) {
|
||||
ret = av_bsf_receive_packet(priv->ctx, &pkt);
|
||||
av_packet_unref(&pkt);
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
FF_ENABLE_DEPRECATION_WARNINGS
|
||||
#endif
|
||||
|
121
libavcodec/bitstream_filters.c
Normal file
121
libavcodec/bitstream_filters.c
Normal file
@ -0,0 +1,121 @@
|
||||
/*
|
||||
* This file is part of Libav.
|
||||
*
|
||||
* Libav is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* Libav is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with Libav; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#include "config.h"
|
||||
|
||||
#include "libavutil/common.h"
|
||||
#include "libavutil/log.h"
|
||||
|
||||
#include "avcodec.h"
|
||||
#include "bsf.h"
|
||||
|
||||
extern const AVBitStreamFilter ff_aac_adtstoasc_bsf;
|
||||
extern const AVBitStreamFilter ff_chomp_bsf;
|
||||
extern const AVBitStreamFilter ff_dump_extradata_bsf;
|
||||
extern const AVBitStreamFilter ff_h264_mp4toannexb_bsf;
|
||||
extern const AVBitStreamFilter ff_hevc_mp4toannexb_bsf;
|
||||
extern const AVBitStreamFilter ff_imx_dump_header_bsf;
|
||||
extern const AVBitStreamFilter ff_mjpeg2jpeg_bsf;
|
||||
extern const AVBitStreamFilter ff_mjpega_dump_header_bsf;
|
||||
extern const AVBitStreamFilter ff_mov2textsub_bsf;
|
||||
extern const AVBitStreamFilter ff_text2movsub_bsf;
|
||||
extern const AVBitStreamFilter ff_noise_bsf;
|
||||
extern const AVBitStreamFilter ff_remove_extradata_bsf;
|
||||
|
||||
static const AVBitStreamFilter *bitstream_filters[] = {
|
||||
#if CONFIG_AAC_ADTSTOASC_BSF
|
||||
&ff_aac_adtstoasc_bsf,
|
||||
#endif
|
||||
#if CONFIG_CHOMP_BSF
|
||||
&ff_chomp_bsf,
|
||||
#endif
|
||||
#if CONFIG_DUMP_EXTRADATA_BSF
|
||||
&ff_dump_extradata_bsf,
|
||||
#endif
|
||||
#if CONFIG_H264_MP4TOANNEXB_BSF
|
||||
&ff_h264_mp4toannexb_bsf,
|
||||
#endif
|
||||
#if CONFIG_HEVC_MP4TOANNEXB_BSF
|
||||
&ff_hevc_mp4toannexb_bsf,
|
||||
#endif
|
||||
#if CONFIG_IMX_DUMP_HEADER_BSF
|
||||
&ff_imx_dump_header_bsf,
|
||||
#endif
|
||||
#if CONFIG_MJPEG2JPEG_BSF
|
||||
&ff_mjpeg2jpeg_bsf,
|
||||
#endif
|
||||
#if CONFIG_MJPEGA_DUMP_HEADER_BSF
|
||||
&ff_mjpeg2jpeg_bsf,
|
||||
#endif
|
||||
#if CONFIG_MOV2TEXTSUB_BSF
|
||||
&ff_mov2textsub_bsf,
|
||||
#endif
|
||||
#if CONFIG_TEXT2MOVSUB_BSF
|
||||
&ff_text2movsub_bsf,
|
||||
#endif
|
||||
#if CONFIG_NOISE_BSF
|
||||
&ff_noise_bsf,
|
||||
#endif
|
||||
#if CONFIG_REMOVE_EXTRADATA_BSF
|
||||
&ff_remove_extradata_bsf,
|
||||
#endif
|
||||
NULL,
|
||||
};
|
||||
|
||||
const AVBitStreamFilter *av_bsf_next(void **opaque)
|
||||
{
|
||||
uintptr_t i = (uintptr_t)*opaque;
|
||||
const AVBitStreamFilter *f = bitstream_filters[i];
|
||||
|
||||
if (f)
|
||||
*opaque = (void*)(i + 1);
|
||||
|
||||
return f;
|
||||
}
|
||||
|
||||
const AVBitStreamFilter *av_bsf_get_by_name(const char *name)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; bitstream_filters[i]; i++) {
|
||||
const AVBitStreamFilter *f = bitstream_filters[i];
|
||||
if (!strcmp(f->name, name))
|
||||
return f;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
const AVClass *ff_bsf_child_class_next(const AVClass *prev)
|
||||
{
|
||||
int i;
|
||||
|
||||
/* find the filter that corresponds to prev */
|
||||
for (i = 0; prev && bitstream_filters[i]; i++) {
|
||||
if (bitstream_filters[i]->priv_class == prev) {
|
||||
i++;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* find next filter with priv options */
|
||||
for (; bitstream_filters[i]; i++)
|
||||
if (bitstream_filters[i]->priv_class)
|
||||
return bitstream_filters[i]->priv_class;
|
||||
return NULL;
|
||||
}
|
219
libavcodec/bsf.c
Normal file
219
libavcodec/bsf.c
Normal file
@ -0,0 +1,219 @@
|
||||
/*
|
||||
* This file is part of Libav.
|
||||
*
|
||||
* Libav is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* Libav is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with Libav; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#include "libavutil/log.h"
|
||||
#include "libavutil/mem.h"
|
||||
#include "libavutil/opt.h"
|
||||
|
||||
#include "avcodec.h"
|
||||
#include "bsf.h"
|
||||
|
||||
struct AVBSFInternal {
|
||||
AVPacket *buffer_pkt;
|
||||
int eof;
|
||||
};
|
||||
|
||||
void av_bsf_free(AVBSFContext **pctx)
|
||||
{
|
||||
AVBSFContext *ctx;
|
||||
|
||||
if (!pctx || !*pctx)
|
||||
return;
|
||||
ctx = *pctx;
|
||||
|
||||
if (ctx->filter->close)
|
||||
ctx->filter->close(ctx);
|
||||
if (ctx->filter->priv_class && ctx->priv_data)
|
||||
av_opt_free(ctx->priv_data);
|
||||
|
||||
av_opt_free(ctx);
|
||||
|
||||
av_packet_free(&ctx->internal->buffer_pkt);
|
||||
av_freep(&ctx->internal);
|
||||
av_freep(&ctx->priv_data);
|
||||
|
||||
avcodec_parameters_free(&ctx->par_in);
|
||||
avcodec_parameters_free(&ctx->par_out);
|
||||
|
||||
av_freep(pctx);
|
||||
}
|
||||
|
||||
static void *bsf_child_next(void *obj, void *prev)
|
||||
{
|
||||
AVBSFContext *ctx = obj;
|
||||
if (!prev && ctx->filter->priv_class)
|
||||
return ctx->priv_data;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static const AVClass bsf_class = {
|
||||
.class_name = "AVBSFContext",
|
||||
.item_name = av_default_item_name,
|
||||
.version = LIBAVUTIL_VERSION_INT,
|
||||
.child_next = bsf_child_next,
|
||||
.child_class_next = ff_bsf_child_class_next,
|
||||
};
|
||||
|
||||
const AVClass *av_bsf_get_class(void)
|
||||
{
|
||||
return &bsf_class;
|
||||
}
|
||||
|
||||
int av_bsf_alloc(const AVBitStreamFilter *filter, AVBSFContext **pctx)
|
||||
{
|
||||
AVBSFContext *ctx;
|
||||
int ret;
|
||||
|
||||
ctx = av_mallocz(sizeof(*ctx));
|
||||
if (!ctx)
|
||||
return AVERROR(ENOMEM);
|
||||
|
||||
ctx->av_class = &bsf_class;
|
||||
ctx->filter = filter;
|
||||
|
||||
ctx->par_in = avcodec_parameters_alloc();
|
||||
ctx->par_out = avcodec_parameters_alloc();
|
||||
if (!ctx->par_in || !ctx->par_out) {
|
||||
ret = AVERROR(ENOMEM);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
ctx->internal = av_mallocz(sizeof(*ctx->internal));
|
||||
if (!ctx->internal) {
|
||||
ret = AVERROR(ENOMEM);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
ctx->internal->buffer_pkt = av_packet_alloc();
|
||||
if (!ctx->internal->buffer_pkt) {
|
||||
ret = AVERROR(ENOMEM);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
av_opt_set_defaults(ctx);
|
||||
|
||||
/* allocate priv data and init private options */
|
||||
if (filter->priv_data_size) {
|
||||
ctx->priv_data = av_mallocz(filter->priv_data_size);
|
||||
if (!ctx->priv_data) {
|
||||
ret = AVERROR(ENOMEM);
|
||||
goto fail;
|
||||
}
|
||||
if (filter->priv_class) {
|
||||
*(const AVClass **)ctx->priv_data = filter->priv_class;
|
||||
av_opt_set_defaults(ctx->priv_data);
|
||||
}
|
||||
}
|
||||
|
||||
*pctx = ctx;
|
||||
return 0;
|
||||
fail:
|
||||
av_bsf_free(&ctx);
|
||||
return ret;
|
||||
}
|
||||
|
||||
int av_bsf_init(AVBSFContext *ctx)
|
||||
{
|
||||
int ret, i;
|
||||
|
||||
/* check that the codec is supported */
|
||||
if (ctx->filter->codec_ids) {
|
||||
for (i = 0; ctx->filter->codec_ids[i] != AV_CODEC_ID_NONE; i++)
|
||||
if (ctx->par_in->codec_id == ctx->filter->codec_ids[i])
|
||||
break;
|
||||
if (ctx->filter->codec_ids[i] == AV_CODEC_ID_NONE) {
|
||||
const AVCodecDescriptor *desc = avcodec_descriptor_get(ctx->par_in->codec_id);
|
||||
av_log(ctx, AV_LOG_ERROR, "Codec '%s' (%d) is not supported by the "
|
||||
"bitstream filter '%s'. Supported codecs are: ",
|
||||
desc ? desc->name : "unknown", ctx->par_in->codec_id, ctx->filter->name);
|
||||
for (i = 0; ctx->filter->codec_ids[i] != AV_CODEC_ID_NONE; i++) {
|
||||
desc = avcodec_descriptor_get(ctx->filter->codec_ids[i]);
|
||||
av_log(ctx, AV_LOG_ERROR, "%s (%d) ",
|
||||
desc ? desc->name : "unknown", ctx->filter->codec_ids[i]);
|
||||
}
|
||||
av_log(ctx, AV_LOG_ERROR, "\n");
|
||||
return AVERROR(EINVAL);
|
||||
}
|
||||
}
|
||||
|
||||
/* initialize output parameters to be the same as input
|
||||
* init below might overwrite that */
|
||||
ret = avcodec_parameters_copy(ctx->par_out, ctx->par_in);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ctx->time_base_out = ctx->time_base_in;
|
||||
|
||||
if (ctx->filter->init) {
|
||||
ret = ctx->filter->init(ctx);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
|
||||
{
|
||||
if (!pkt || !pkt->data) {
|
||||
ctx->internal->eof = 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (ctx->internal->eof) {
|
||||
av_log(ctx, AV_LOG_ERROR, "A non-NULL packet sent after an EOF.\n");
|
||||
return AVERROR(EINVAL);
|
||||
}
|
||||
|
||||
if (ctx->internal->buffer_pkt->data ||
|
||||
ctx->internal->buffer_pkt->side_data_elems)
|
||||
return AVERROR(EAGAIN);
|
||||
|
||||
av_packet_move_ref(ctx->internal->buffer_pkt, pkt);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
|
||||
{
|
||||
return ctx->filter->filter(ctx, pkt);
|
||||
}
|
||||
|
||||
int ff_bsf_get_packet(AVBSFContext *ctx, AVPacket **pkt)
|
||||
{
|
||||
AVBSFInternal *in = ctx->internal;
|
||||
AVPacket *tmp_pkt;
|
||||
|
||||
if (in->eof)
|
||||
return AVERROR_EOF;
|
||||
|
||||
if (!ctx->internal->buffer_pkt->data &&
|
||||
!ctx->internal->buffer_pkt->side_data_elems)
|
||||
return AVERROR(EAGAIN);
|
||||
|
||||
tmp_pkt = av_packet_alloc();
|
||||
if (!tmp_pkt)
|
||||
return AVERROR(ENOMEM);
|
||||
|
||||
*pkt = ctx->internal->buffer_pkt;
|
||||
ctx->internal->buffer_pkt = tmp_pkt;
|
||||
|
||||
return 0;
|
||||
}
|
33
libavcodec/bsf.h
Normal file
33
libavcodec/bsf.h
Normal file
@ -0,0 +1,33 @@
|
||||
/*
|
||||
* This file is part of Libav.
|
||||
*
|
||||
* Libav is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* Libav is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with Libav; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#ifndef AVCODEC_BSF_H
|
||||
#define AVCODEC_BSF_H
|
||||
|
||||
#include "avcodec.h"
|
||||
|
||||
/**
|
||||
* Called by the biststream filters to get the next packet for filtering.
|
||||
* The filter is responsible for either freeing the packet or passing it to the
|
||||
* caller.
|
||||
*/
|
||||
int ff_bsf_get_packet(AVBSFContext *ctx, AVPacket **pkt);
|
||||
|
||||
const AVClass *ff_bsf_child_class_next(const AVClass *prev);
|
||||
|
||||
#endif /* AVCODEC_BSF_H */
|
@ -20,19 +20,23 @@
|
||||
*/
|
||||
|
||||
#include "avcodec.h"
|
||||
#include "bsf.h"
|
||||
#include "internal.h"
|
||||
|
||||
static int chomp_filter(AVBitStreamFilterContext *bsfc,
|
||||
AVCodecContext *avctx, const char *args,
|
||||
uint8_t **poutbuf, int *poutbuf_size,
|
||||
const uint8_t *buf, int buf_size,
|
||||
int keyframe)
|
||||
static int chomp_filter(AVBSFContext *ctx, AVPacket *out)
|
||||
{
|
||||
while (buf_size > 0 && !buf[buf_size-1])
|
||||
buf_size--;
|
||||
AVPacket *in;
|
||||
int ret;
|
||||
|
||||
*poutbuf = (uint8_t*) buf;
|
||||
*poutbuf_size = buf_size;
|
||||
ret = ff_bsf_get_packet(ctx, &in);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
while (in->size > 0 && !in->data[in->size - 1])
|
||||
in->size--;
|
||||
|
||||
av_packet_move_ref(out, in);
|
||||
av_packet_free(&in);
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -40,8 +44,7 @@ static int chomp_filter(AVBitStreamFilterContext *bsfc,
|
||||
/**
|
||||
* This filter removes a string of NULL bytes from the end of a packet.
|
||||
*/
|
||||
AVBitStreamFilter ff_chomp_bsf = {
|
||||
"chomp",
|
||||
0,
|
||||
chomp_filter,
|
||||
const AVBitStreamFilter ff_chomp_bsf = {
|
||||
.name = "chomp",
|
||||
.filter = chomp_filter,
|
||||
};
|
||||
|
@ -21,35 +21,81 @@
|
||||
#include <string.h>
|
||||
|
||||
#include "avcodec.h"
|
||||
#include "bsf.h"
|
||||
|
||||
#include "libavutil/log.h"
|
||||
#include "libavutil/mem.h"
|
||||
#include "libavutil/opt.h"
|
||||
|
||||
enum DumpFreq {
|
||||
DUMP_FREQ_KEYFRAME,
|
||||
DUMP_FREQ_ALL,
|
||||
};
|
||||
|
||||
static int dump_extradata(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
|
||||
uint8_t **poutbuf, int *poutbuf_size,
|
||||
const uint8_t *buf, int buf_size, int keyframe){
|
||||
int cmd= args ? *args : 0;
|
||||
/* cast to avoid warning about discarding qualifiers */
|
||||
if(avctx->extradata){
|
||||
if( (keyframe && (avctx->flags2 & AV_CODEC_FLAG2_LOCAL_HEADER) && cmd == 'a')
|
||||
||(keyframe && (cmd=='k' || !cmd))
|
||||
||(cmd=='e')
|
||||
/*||(? && (s->flags & PARSER_FLAG_DUMP_EXTRADATA_AT_BEGIN)*/){
|
||||
int size= buf_size + avctx->extradata_size;
|
||||
*poutbuf_size= size;
|
||||
*poutbuf= av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
|
||||
if (!*poutbuf)
|
||||
return AVERROR(ENOMEM);
|
||||
typedef struct DumpExtradataContext {
|
||||
const AVClass *class;
|
||||
int freq;
|
||||
} DumpExtradataContext;
|
||||
|
||||
memcpy(*poutbuf, avctx->extradata, avctx->extradata_size);
|
||||
memcpy((*poutbuf) + avctx->extradata_size, buf, buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
|
||||
return 1;
|
||||
static int dump_extradata(AVBSFContext *ctx, AVPacket *out)
|
||||
{
|
||||
DumpExtradataContext *s = ctx->priv_data;
|
||||
AVPacket *in;
|
||||
int ret = 0;
|
||||
|
||||
ret = ff_bsf_get_packet(ctx, &in);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (ctx->par_in->extradata &&
|
||||
(s->freq == DUMP_FREQ_ALL ||
|
||||
(s->freq == DUMP_FREQ_KEYFRAME && in->flags & AV_PKT_FLAG_KEY))) {
|
||||
if (in->size >= INT_MAX - ctx->par_in->extradata_size) {
|
||||
ret = AVERROR(ERANGE);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
ret = av_new_packet(out, in->size + ctx->par_in->extradata_size);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
ret = av_packet_copy_props(out, in);
|
||||
if (ret < 0) {
|
||||
av_packet_unref(out);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
memcpy(out->data, ctx->par_in->extradata, ctx->par_in->extradata_size);
|
||||
memcpy(out->data + ctx->par_in->extradata_size, in->data, in->size);
|
||||
} else {
|
||||
av_packet_move_ref(out, in);
|
||||
}
|
||||
return 0;
|
||||
|
||||
fail:
|
||||
av_packet_free(&in);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
AVBitStreamFilter ff_dump_extradata_bsf={
|
||||
"dump_extra",
|
||||
0,
|
||||
dump_extradata,
|
||||
#define OFFSET(x) offsetof(DumpExtradataContext, x)
|
||||
static const AVOption options[] = {
|
||||
{ "freq", "When do dump extradata", OFFSET(freq), AV_OPT_TYPE_INT,
|
||||
{ .i64 = DUMP_FREQ_KEYFRAME }, DUMP_FREQ_KEYFRAME, DUMP_FREQ_ALL, 0, "freq" },
|
||||
{ "keyframe", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_KEYFRAME }, .unit = "freq" },
|
||||
{ "all", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_ALL }, .unit = "freq" },
|
||||
{ NULL },
|
||||
};
|
||||
|
||||
static const AVClass dump_extradata_class = {
|
||||
.class_name = "dump_extradata bsf",
|
||||
.item_name = av_default_item_name,
|
||||
.option = options,
|
||||
.version = LIBAVUTIL_VERSION_MAJOR,
|
||||
};
|
||||
|
||||
const AVBitStreamFilter ff_dump_extradata_bsf = {
|
||||
.name = "dump_extra",
|
||||
.priv_data_size = sizeof(DumpExtradataContext),
|
||||
.priv_class = &dump_extradata_class,
|
||||
.filter = dump_extradata,
|
||||
};
|
||||
|
@ -23,7 +23,9 @@
|
||||
|
||||
#include "libavutil/intreadwrite.h"
|
||||
#include "libavutil/mem.h"
|
||||
|
||||
#include "avcodec.h"
|
||||
#include "bsf.h"
|
||||
|
||||
typedef struct H264BSFContext {
|
||||
uint8_t length_size;
|
||||
@ -31,41 +33,39 @@ typedef struct H264BSFContext {
|
||||
int extradata_parsed;
|
||||
} H264BSFContext;
|
||||
|
||||
static int alloc_and_copy(uint8_t **poutbuf, int *poutbuf_size,
|
||||
static int alloc_and_copy(AVPacket *out,
|
||||
const uint8_t *sps_pps, uint32_t sps_pps_size,
|
||||
const uint8_t *in, uint32_t in_size)
|
||||
{
|
||||
uint32_t offset = *poutbuf_size;
|
||||
uint32_t offset = out->size;
|
||||
uint8_t nal_header_size = offset ? 3 : 4;
|
||||
int err;
|
||||
|
||||
*poutbuf_size += sps_pps_size + in_size + nal_header_size;
|
||||
if ((err = av_reallocp(poutbuf,
|
||||
*poutbuf_size + AV_INPUT_BUFFER_PADDING_SIZE)) < 0) {
|
||||
*poutbuf_size = 0;
|
||||
err = av_grow_packet(out, sps_pps_size + in_size + nal_header_size);
|
||||
if (err < 0)
|
||||
return err;
|
||||
}
|
||||
|
||||
if (sps_pps)
|
||||
memcpy(*poutbuf + offset, sps_pps, sps_pps_size);
|
||||
memcpy(*poutbuf + sps_pps_size + nal_header_size + offset, in, in_size);
|
||||
memcpy(out->data + offset, sps_pps, sps_pps_size);
|
||||
memcpy(out->data + sps_pps_size + nal_header_size + offset, in, in_size);
|
||||
if (!offset) {
|
||||
AV_WB32(*poutbuf + sps_pps_size, 1);
|
||||
AV_WB32(out->data + sps_pps_size, 1);
|
||||
} else {
|
||||
(*poutbuf + offset + sps_pps_size)[0] =
|
||||
(*poutbuf + offset + sps_pps_size)[1] = 0;
|
||||
(*poutbuf + offset + sps_pps_size)[2] = 1;
|
||||
(out->data + offset + sps_pps_size)[0] =
|
||||
(out->data + offset + sps_pps_size)[1] = 0;
|
||||
(out->data + offset + sps_pps_size)[2] = 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int h264_extradata_to_annexb(AVCodecContext *avctx, const int padding)
|
||||
static int h264_extradata_to_annexb(AVBSFContext *ctx, const int padding)
|
||||
{
|
||||
uint16_t unit_size;
|
||||
uint64_t total_size = 0;
|
||||
uint8_t *out = NULL, unit_nb, sps_done = 0,
|
||||
sps_seen = 0, pps_seen = 0;
|
||||
const uint8_t *extradata = avctx->extradata + 4;
|
||||
const uint8_t *extradata = ctx->par_in->extradata + 4;
|
||||
static const uint8_t nalu_header[4] = { 0, 0, 0, 1 };
|
||||
int length_size = (*extradata++ & 0x3) + 1; // retrieve length coded size
|
||||
|
||||
@ -90,8 +90,8 @@ static int h264_extradata_to_annexb(AVCodecContext *avctx, const int padding)
|
||||
unit_size = AV_RB16(extradata);
|
||||
total_size += unit_size + 4;
|
||||
if (total_size > INT_MAX - padding ||
|
||||
extradata + 2 + unit_size > avctx->extradata +
|
||||
avctx->extradata_size) {
|
||||
extradata + 2 + unit_size > ctx->par_in->extradata +
|
||||
ctx->par_in->extradata_size) {
|
||||
av_free(out);
|
||||
return AVERROR(EINVAL);
|
||||
}
|
||||
@ -112,100 +112,125 @@ static int h264_extradata_to_annexb(AVCodecContext *avctx, const int padding)
|
||||
memset(out + total_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
|
||||
|
||||
if (!sps_seen)
|
||||
av_log(avctx, AV_LOG_WARNING,
|
||||
av_log(ctx, AV_LOG_WARNING,
|
||||
"Warning: SPS NALU missing or invalid. "
|
||||
"The resulting stream may not play.\n");
|
||||
|
||||
if (!pps_seen)
|
||||
av_log(avctx, AV_LOG_WARNING,
|
||||
av_log(ctx, AV_LOG_WARNING,
|
||||
"Warning: PPS NALU missing or invalid. "
|
||||
"The resulting stream may not play.\n");
|
||||
|
||||
av_free(avctx->extradata);
|
||||
avctx->extradata = out;
|
||||
avctx->extradata_size = total_size;
|
||||
av_freep(&ctx->par_out->extradata);
|
||||
ctx->par_out->extradata = out;
|
||||
ctx->par_out->extradata_size = total_size;
|
||||
|
||||
return length_size;
|
||||
}
|
||||
|
||||
static int h264_mp4toannexb_filter(AVBitStreamFilterContext *bsfc,
|
||||
AVCodecContext *avctx, const char *args,
|
||||
uint8_t **poutbuf, int *poutbuf_size,
|
||||
const uint8_t *buf, int buf_size,
|
||||
int keyframe)
|
||||
static int h264_mp4toannexb_init(AVBSFContext *ctx)
|
||||
{
|
||||
H264BSFContext *ctx = bsfc->priv_data;
|
||||
H264BSFContext *s = ctx->priv_data;
|
||||
int ret;
|
||||
|
||||
/* retrieve sps and pps NAL units from extradata */
|
||||
if (ctx->par_in->extradata_size >= 6) {
|
||||
ret = h264_extradata_to_annexb(ctx, AV_INPUT_BUFFER_PADDING_SIZE);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
s->length_size = ret;
|
||||
s->first_idr = 1;
|
||||
s->extradata_parsed = 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int h264_mp4toannexb_filter(AVBSFContext *ctx, AVPacket *out)
|
||||
{
|
||||
H264BSFContext *s = ctx->priv_data;
|
||||
|
||||
AVPacket *in;
|
||||
uint8_t unit_type;
|
||||
int32_t nal_size;
|
||||
uint32_t cumul_size = 0;
|
||||
const uint8_t *buf_end = buf + buf_size;
|
||||
const uint8_t *buf;
|
||||
const uint8_t *buf_end;
|
||||
int buf_size;
|
||||
int ret = 0;
|
||||
|
||||
ret = ff_bsf_get_packet(ctx, &in);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
/* nothing to filter */
|
||||
if (!avctx->extradata || avctx->extradata_size < 6) {
|
||||
*poutbuf = (uint8_t *)buf;
|
||||
*poutbuf_size = buf_size;
|
||||
if (!s->extradata_parsed) {
|
||||
av_packet_move_ref(out, in);
|
||||
av_packet_free(&in);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* retrieve sps and pps NAL units from extradata */
|
||||
if (!ctx->extradata_parsed) {
|
||||
ret = h264_extradata_to_annexb(avctx, AV_INPUT_BUFFER_PADDING_SIZE);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
ctx->length_size = ret;
|
||||
ctx->first_idr = 1;
|
||||
ctx->extradata_parsed = 1;
|
||||
}
|
||||
buf = in->data;
|
||||
buf_size = in->size;
|
||||
buf_end = in->data + in->size;
|
||||
|
||||
*poutbuf_size = 0;
|
||||
*poutbuf = NULL;
|
||||
do {
|
||||
if (buf + ctx->length_size > buf_end)
|
||||
if (buf + s->length_size > buf_end)
|
||||
goto fail;
|
||||
|
||||
if (ctx->length_size == 1) {
|
||||
if (s->length_size == 1) {
|
||||
nal_size = buf[0];
|
||||
} else if (ctx->length_size == 2) {
|
||||
} else if (s->length_size == 2) {
|
||||
nal_size = AV_RB16(buf);
|
||||
} else
|
||||
nal_size = AV_RB32(buf);
|
||||
|
||||
buf += ctx->length_size;
|
||||
buf += s->length_size;
|
||||
unit_type = *buf & 0x1f;
|
||||
|
||||
if (buf + nal_size > buf_end || nal_size < 0)
|
||||
goto fail;
|
||||
|
||||
/* prepend only to the first type 5 NAL unit of an IDR picture */
|
||||
if (ctx->first_idr && unit_type == 5) {
|
||||
if (alloc_and_copy(poutbuf, poutbuf_size,
|
||||
avctx->extradata, avctx->extradata_size,
|
||||
if (s->first_idr && unit_type == 5) {
|
||||
if (alloc_and_copy(out,
|
||||
ctx->par_out->extradata, ctx->par_out->extradata_size,
|
||||
buf, nal_size) < 0)
|
||||
goto fail;
|
||||
ctx->first_idr = 0;
|
||||
s->first_idr = 0;
|
||||
} else {
|
||||
if (alloc_and_copy(poutbuf, poutbuf_size,
|
||||
if (alloc_and_copy(out,
|
||||
NULL, 0, buf, nal_size) < 0)
|
||||
goto fail;
|
||||
if (!ctx->first_idr && unit_type == 1)
|
||||
ctx->first_idr = 1;
|
||||
if (!s->first_idr && unit_type == 1)
|
||||
s->first_idr = 1;
|
||||
}
|
||||
|
||||
buf += nal_size;
|
||||
cumul_size += nal_size + ctx->length_size;
|
||||
cumul_size += nal_size + s->length_size;
|
||||
} while (cumul_size < buf_size);
|
||||
|
||||
return 1;
|
||||
ret = av_packet_copy_props(out, in);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
fail:
|
||||
av_freep(poutbuf);
|
||||
*poutbuf_size = 0;
|
||||
return AVERROR(EINVAL);
|
||||
if (ret < 0)
|
||||
av_packet_unref(out);
|
||||
av_packet_free(&in);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
AVBitStreamFilter ff_h264_mp4toannexb_bsf = {
|
||||
"h264_mp4toannexb",
|
||||
sizeof(H264BSFContext),
|
||||
h264_mp4toannexb_filter,
|
||||
static const enum AVCodecID codec_ids[] = {
|
||||
AV_CODEC_ID_H264, AV_CODEC_ID_NONE,
|
||||
};
|
||||
|
||||
const AVBitStreamFilter ff_h264_mp4toannexb_bsf = {
|
||||
.name = "h264_mp4toannexb",
|
||||
.priv_data_size = sizeof(H264BSFContext),
|
||||
.init = h264_mp4toannexb_init,
|
||||
.filter = h264_mp4toannexb_filter,
|
||||
.codec_ids = codec_ids,
|
||||
};
|
||||
|
@ -25,6 +25,7 @@
|
||||
#include "libavutil/mem.h"
|
||||
|
||||
#include "avcodec.h"
|
||||
#include "bsf.h"
|
||||
#include "bytestream.h"
|
||||
#include "hevc.h"
|
||||
|
||||
@ -33,11 +34,9 @@
|
||||
typedef struct HEVCBSFContext {
|
||||
uint8_t length_size;
|
||||
int extradata_parsed;
|
||||
|
||||
int logged_nonmp4_warning;
|
||||
} HEVCBSFContext;
|
||||
|
||||
static int hevc_extradata_to_annexb(AVCodecContext *avctx)
|
||||
static int hevc_extradata_to_annexb(AVBSFContext *ctx)
|
||||
{
|
||||
GetByteContext gb;
|
||||
int length_size, num_arrays, i, j;
|
||||
@ -46,7 +45,7 @@ static int hevc_extradata_to_annexb(AVCodecContext *avctx)
|
||||
uint8_t *new_extradata = NULL;
|
||||
size_t new_extradata_size = 0;;
|
||||
|
||||
bytestream2_init(&gb, avctx->extradata, avctx->extradata_size);
|
||||
bytestream2_init(&gb, ctx->par_in->extradata, ctx->par_in->extradata_size);
|
||||
|
||||
bytestream2_skip(&gb, 21);
|
||||
length_size = (bytestream2_get_byte(&gb) & 3) + 1;
|
||||
@ -58,7 +57,7 @@ static int hevc_extradata_to_annexb(AVCodecContext *avctx)
|
||||
|
||||
if (!(type == NAL_VPS || type == NAL_SPS || type == NAL_PPS ||
|
||||
type == NAL_SEI_PREFIX || type == NAL_SEI_SUFFIX)) {
|
||||
av_log(avctx, AV_LOG_ERROR, "Invalid NAL unit type in extradata: %d\n",
|
||||
av_log(ctx, AV_LOG_ERROR, "Invalid NAL unit type in extradata: %d\n",
|
||||
type);
|
||||
ret = AVERROR_INVALIDDATA;
|
||||
goto fail;
|
||||
@ -82,12 +81,12 @@ static int hevc_extradata_to_annexb(AVCodecContext *avctx)
|
||||
}
|
||||
}
|
||||
|
||||
av_freep(&avctx->extradata);
|
||||
avctx->extradata = new_extradata;
|
||||
avctx->extradata_size = new_extradata_size;
|
||||
av_freep(&ctx->par_out->extradata);
|
||||
ctx->par_out->extradata = new_extradata;
|
||||
ctx->par_out->extradata_size = new_extradata_size;
|
||||
|
||||
if (!new_extradata_size)
|
||||
av_log(avctx, AV_LOG_WARNING, "No parameter sets in the extradata\n");
|
||||
av_log(ctx, AV_LOG_WARNING, "No parameter sets in the extradata\n");
|
||||
|
||||
return length_size;
|
||||
fail:
|
||||
@ -95,52 +94,54 @@ fail:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int hevc_mp4toannexb_filter(AVBitStreamFilterContext *bsfc,
|
||||
AVCodecContext *avctx, const char *args,
|
||||
uint8_t **poutbuf, int *poutbuf_size,
|
||||
const uint8_t *buf, int buf_size,
|
||||
int keyframe)
|
||||
static int hevc_mp4toannexb_init(AVBSFContext *ctx)
|
||||
{
|
||||
HEVCBSFContext *ctx = bsfc->priv_data;
|
||||
HEVCBSFContext *s = ctx->priv_data;
|
||||
int ret;
|
||||
|
||||
if (ctx->par_in->extradata_size < MIN_HEVCC_LENGTH ||
|
||||
AV_RB24(ctx->par_in->extradata) == 1 ||
|
||||
AV_RB32(ctx->par_in->extradata) == 1) {
|
||||
av_log(ctx, AV_LOG_VERBOSE,
|
||||
"The input looks like it is Annex B already\n");
|
||||
} else {
|
||||
ret = hevc_extradata_to_annexb(ctx);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
s->length_size = ret;
|
||||
s->extradata_parsed = 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hevc_mp4toannexb_filter(AVBSFContext *ctx, AVPacket *out)
|
||||
{
|
||||
HEVCBSFContext *s = ctx->priv_data;
|
||||
AVPacket *in;
|
||||
GetByteContext gb;
|
||||
|
||||
uint8_t *out = NULL;
|
||||
size_t out_size = 0;
|
||||
int got_irap = 0;
|
||||
int i, ret = 0;
|
||||
|
||||
if (!ctx->extradata_parsed) {
|
||||
if (avctx->extradata_size < MIN_HEVCC_LENGTH ||
|
||||
AV_RB24(avctx->extradata) == 1 ||
|
||||
AV_RB32(avctx->extradata) == 1) {
|
||||
if (!ctx->logged_nonmp4_warning) {
|
||||
av_log(avctx, AV_LOG_VERBOSE,
|
||||
"The input looks like it is Annex B already\n");
|
||||
ctx->logged_nonmp4_warning = 1;
|
||||
}
|
||||
*poutbuf = buf;
|
||||
*poutbuf_size = buf_size;
|
||||
return 0;
|
||||
}
|
||||
ret = ff_bsf_get_packet(ctx, &in);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = hevc_extradata_to_annexb(avctx);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
ctx->length_size = ret;
|
||||
ctx->extradata_parsed = 1;
|
||||
if (!s->extradata_parsed) {
|
||||
av_packet_move_ref(out, in);
|
||||
av_packet_free(&in);
|
||||
return 0;
|
||||
}
|
||||
|
||||
*poutbuf_size = 0;
|
||||
*poutbuf = NULL;
|
||||
|
||||
bytestream2_init(&gb, buf, buf_size);
|
||||
bytestream2_init(&gb, in->data, in->size);
|
||||
|
||||
while (bytestream2_get_bytes_left(&gb)) {
|
||||
uint32_t nalu_size = 0;
|
||||
int nalu_type;
|
||||
int is_irap, add_extradata, extra_size;
|
||||
int is_irap, add_extradata, extra_size, prev_size;
|
||||
|
||||
for (i = 0; i < ctx->length_size; i++)
|
||||
for (i = 0; i < s->length_size; i++)
|
||||
nalu_size = (nalu_size << 8) | bytestream2_get_byte(&gb);
|
||||
|
||||
nalu_type = (bytestream2_peek_byte(&gb) >> 1) & 0x3f;
|
||||
@ -148,39 +149,47 @@ static int hevc_mp4toannexb_filter(AVBitStreamFilterContext *bsfc,
|
||||
/* prepend extradata to IRAP frames */
|
||||
is_irap = nalu_type >= 16 && nalu_type <= 23;
|
||||
add_extradata = is_irap && !got_irap;
|
||||
extra_size = add_extradata * avctx->extradata_size;
|
||||
extra_size = add_extradata * ctx->par_out->extradata_size;
|
||||
got_irap |= is_irap;
|
||||
|
||||
if (SIZE_MAX - out_size < 4 ||
|
||||
SIZE_MAX - out_size - 4 < nalu_size ||
|
||||
SIZE_MAX - out_size - 4 - nalu_size < extra_size) {
|
||||
if (SIZE_MAX - nalu_size < 4 ||
|
||||
SIZE_MAX - 4 - nalu_size < extra_size) {
|
||||
ret = AVERROR_INVALIDDATA;
|
||||
goto fail;
|
||||
}
|
||||
|
||||
ret = av_reallocp(&out, out_size + 4 + nalu_size + extra_size);
|
||||
prev_size = out->size;
|
||||
|
||||
ret = av_grow_packet(out, 4 + nalu_size + extra_size);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
if (add_extradata)
|
||||
memcpy(out + out_size, avctx->extradata, extra_size);
|
||||
AV_WB32(out + out_size + extra_size, 1);
|
||||
bytestream2_get_buffer(&gb, out + out_size + 4 + extra_size, nalu_size);
|
||||
out_size += 4 + nalu_size + extra_size;
|
||||
memcpy(out->data + prev_size, ctx->par_out->extradata, extra_size);
|
||||
AV_WB32(out->data + prev_size + extra_size, 1);
|
||||
bytestream2_get_buffer(&gb, out->data + prev_size + 4 + extra_size, nalu_size);
|
||||
}
|
||||
|
||||
*poutbuf = out;
|
||||
*poutbuf_size = out_size;
|
||||
|
||||
return 1;
|
||||
ret = av_packet_copy_props(out, in);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
fail:
|
||||
av_freep(&out);
|
||||
if (ret < 0)
|
||||
av_packet_unref(out);
|
||||
av_packet_free(&in);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
AVBitStreamFilter ff_hevc_mp4toannexb_bsf = {
|
||||
"hevc_mp4toannexb",
|
||||
sizeof(HEVCBSFContext),
|
||||
hevc_mp4toannexb_filter,
|
||||
static const enum AVCodecID codec_ids[] = {
|
||||
AV_CODEC_ID_HEVC, AV_CODEC_ID_NONE,
|
||||
};
|
||||
|
||||
const AVBitStreamFilter ff_hevc_mp4toannexb_bsf = {
|
||||
.name = "hevc_mp4toannexb",
|
||||
.priv_data_size = sizeof(HEVCBSFContext),
|
||||
.init = hevc_mp4toannexb_init,
|
||||
.filter = hevc_mp4toannexb_filter,
|
||||
.codec_ids = codec_ids,
|
||||
};
|
||||
|
@ -26,36 +26,51 @@
|
||||
*/
|
||||
|
||||
#include "avcodec.h"
|
||||
#include "bsf.h"
|
||||
#include "bytestream.h"
|
||||
|
||||
|
||||
static int imx_dump_header(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
|
||||
uint8_t **poutbuf, int *poutbuf_size,
|
||||
const uint8_t *buf, int buf_size, int keyframe)
|
||||
static int imx_dump_header(AVBSFContext *ctx, AVPacket *out)
|
||||
{
|
||||
/* MXF essence element key */
|
||||
static const uint8_t imx_header[16] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x05,0x01,0x01,0x00 };
|
||||
uint8_t *poutbufp;
|
||||
|
||||
if (avctx->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
|
||||
av_log(avctx, AV_LOG_ERROR, "imx bitstream filter only applies to mpeg2video codec\n");
|
||||
return 0;
|
||||
}
|
||||
AVPacket *in;
|
||||
int ret = 0;
|
||||
uint8_t *out_buf;
|
||||
|
||||
*poutbuf = av_malloc(buf_size + 20 + AV_INPUT_BUFFER_PADDING_SIZE);
|
||||
if (!*poutbuf)
|
||||
return AVERROR(ENOMEM);
|
||||
poutbufp = *poutbuf;
|
||||
bytestream_put_buffer(&poutbufp, imx_header, 16);
|
||||
bytestream_put_byte(&poutbufp, 0x83); /* KLV BER long form */
|
||||
bytestream_put_be24(&poutbufp, buf_size);
|
||||
bytestream_put_buffer(&poutbufp, buf, buf_size);
|
||||
*poutbuf_size = poutbufp - *poutbuf;
|
||||
return 1;
|
||||
ret = ff_bsf_get_packet(ctx, &in);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = av_new_packet(out, in->size + 20);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
out_buf = out->data;
|
||||
|
||||
bytestream_put_buffer(&out_buf, imx_header, 16);
|
||||
bytestream_put_byte(&out_buf, 0x83); /* KLV BER long form */
|
||||
bytestream_put_be24(&out_buf, in->size);
|
||||
bytestream_put_buffer(&out_buf, in->data, in->size);
|
||||
|
||||
ret = av_packet_copy_props(out, in);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
fail:
|
||||
if (ret < 0)
|
||||
av_packet_unref(out);
|
||||
av_packet_free(&in);
|
||||
return ret;
|
||||
}
|
||||
|
||||
AVBitStreamFilter ff_imx_dump_header_bsf = {
|
||||
"imxdump",
|
||||
0,
|
||||
imx_dump_header,
|
||||
static const enum AVCodecID codec_ids[] = {
|
||||
AV_CODEC_ID_MPEG2VIDEO, AV_CODEC_ID_NONE,
|
||||
};
|
||||
|
||||
const AVBitStreamFilter ff_imx_dump_header_bsf = {
|
||||
.name = "imxdump",
|
||||
.filter = imx_dump_header,
|
||||
.codec_ids = codec_ids,
|
||||
};
|
||||
|
@ -30,6 +30,7 @@
|
||||
#include "libavutil/mem.h"
|
||||
|
||||
#include "avcodec.h"
|
||||
#include "bsf.h"
|
||||
#include "jpegtables.h"
|
||||
|
||||
static const uint8_t jpeg_header[] = {
|
||||
@ -75,42 +76,56 @@ static uint8_t *append_dht_segment(uint8_t *buf)
|
||||
return buf;
|
||||
}
|
||||
|
||||
static int mjpeg2jpeg_filter(AVBitStreamFilterContext *bsfc,
|
||||
AVCodecContext *avctx, const char *args,
|
||||
uint8_t **poutbuf, int *poutbuf_size,
|
||||
const uint8_t *buf, int buf_size,
|
||||
int keyframe)
|
||||
static int mjpeg2jpeg_filter(AVBSFContext *ctx, AVPacket *out)
|
||||
{
|
||||
AVPacket *in;
|
||||
int ret = 0;
|
||||
int input_skip, output_size;
|
||||
uint8_t *output, *out;
|
||||
uint8_t *output;
|
||||
|
||||
if (buf_size < 12) {
|
||||
av_log(avctx, AV_LOG_ERROR, "input is truncated\n");
|
||||
return AVERROR_INVALIDDATA;
|
||||
ret = ff_bsf_get_packet(ctx, &in);
|
||||
|
||||
if (in->size < 12) {
|
||||
av_log(ctx, AV_LOG_ERROR, "input is truncated\n");
|
||||
ret = AVERROR_INVALIDDATA;
|
||||
goto fail;
|
||||
}
|
||||
if (memcmp("AVI1", buf + 6, 4)) {
|
||||
av_log(avctx, AV_LOG_ERROR, "input is not MJPEG/AVI1\n");
|
||||
return AVERROR_INVALIDDATA;
|
||||
if (memcmp("AVI1", in->data + 6, 4)) {
|
||||
av_log(ctx, AV_LOG_ERROR, "input is not MJPEG/AVI1\n");
|
||||
ret = AVERROR_INVALIDDATA;
|
||||
goto fail;
|
||||
}
|
||||
input_skip = (buf[4] << 8) + buf[5] + 4;
|
||||
if (buf_size < input_skip) {
|
||||
av_log(avctx, AV_LOG_ERROR, "input is truncated\n");
|
||||
return AVERROR_INVALIDDATA;
|
||||
|
||||
input_skip = (in->data[4] << 8) + in->data[5] + 4;
|
||||
if (in->size < input_skip) {
|
||||
av_log(ctx, AV_LOG_ERROR, "input is truncated\n");
|
||||
ret = AVERROR_INVALIDDATA;
|
||||
goto fail;
|
||||
}
|
||||
output_size = buf_size - input_skip +
|
||||
output_size = in->size - input_skip +
|
||||
sizeof(jpeg_header) + dht_segment_size;
|
||||
output = out = av_malloc(output_size);
|
||||
if (!output)
|
||||
return AVERROR(ENOMEM);
|
||||
out = append(out, jpeg_header, sizeof(jpeg_header));
|
||||
out = append_dht_segment(out);
|
||||
out = append(out, buf + input_skip, buf_size - input_skip);
|
||||
*poutbuf = output;
|
||||
*poutbuf_size = output_size;
|
||||
return 1;
|
||||
ret = av_new_packet(out, output_size);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
output = out->data;
|
||||
|
||||
output = append(output, jpeg_header, sizeof(jpeg_header));
|
||||
output = append_dht_segment(output);
|
||||
output = append(output, in->data + input_skip, in->size - input_skip);
|
||||
|
||||
ret = av_packet_copy_props(out, in);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
fail:
|
||||
if (ret < 0)
|
||||
av_packet_unref(out);
|
||||
av_packet_free(&in);
|
||||
return ret;
|
||||
}
|
||||
|
||||
AVBitStreamFilter ff_mjpeg2jpeg_bsf = {
|
||||
const AVBitStreamFilter ff_mjpeg2jpeg_bsf = {
|
||||
.name = "mjpeg2jpeg",
|
||||
.filter = mjpeg2jpeg_filter,
|
||||
};
|
||||
|
@ -26,71 +26,83 @@
|
||||
*/
|
||||
|
||||
#include "avcodec.h"
|
||||
#include "bsf.h"
|
||||
#include "bytestream.h"
|
||||
#include "mjpeg.h"
|
||||
|
||||
|
||||
static int mjpega_dump_header(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
|
||||
uint8_t **poutbuf, int *poutbuf_size,
|
||||
const uint8_t *buf, int buf_size, int keyframe)
|
||||
static int mjpega_dump_header(AVBSFContext *ctx, AVPacket *out)
|
||||
{
|
||||
uint8_t *poutbufp;
|
||||
AVPacket *in;
|
||||
uint8_t *out_buf;
|
||||
unsigned dqt = 0, dht = 0, sof0 = 0;
|
||||
int i;
|
||||
int ret = 0, i;
|
||||
|
||||
if (avctx->codec_id != AV_CODEC_ID_MJPEG) {
|
||||
av_log(avctx, AV_LOG_ERROR, "mjpega bitstream filter only applies to mjpeg codec\n");
|
||||
return 0;
|
||||
}
|
||||
ret = ff_bsf_get_packet(ctx, &in);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
*poutbuf_size = 0;
|
||||
*poutbuf = av_malloc(buf_size + 44 + AV_INPUT_BUFFER_PADDING_SIZE);
|
||||
if (!*poutbuf)
|
||||
return AVERROR(ENOMEM);
|
||||
poutbufp = *poutbuf;
|
||||
bytestream_put_byte(&poutbufp, 0xff);
|
||||
bytestream_put_byte(&poutbufp, SOI);
|
||||
bytestream_put_byte(&poutbufp, 0xff);
|
||||
bytestream_put_byte(&poutbufp, APP1);
|
||||
bytestream_put_be16(&poutbufp, 42); /* size */
|
||||
bytestream_put_be32(&poutbufp, 0);
|
||||
bytestream_put_buffer(&poutbufp, "mjpg", 4);
|
||||
bytestream_put_be32(&poutbufp, buf_size + 44); /* field size */
|
||||
bytestream_put_be32(&poutbufp, buf_size + 44); /* pad field size */
|
||||
bytestream_put_be32(&poutbufp, 0); /* next ptr */
|
||||
ret = av_new_packet(out, in->size + 44);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
for (i = 0; i < buf_size - 1; i++) {
|
||||
if (buf[i] == 0xff) {
|
||||
switch (buf[i + 1]) {
|
||||
ret = av_packet_copy_props(out, in);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
out_buf = out->data;
|
||||
bytestream_put_byte(&out_buf, 0xff);
|
||||
bytestream_put_byte(&out_buf, SOI);
|
||||
bytestream_put_byte(&out_buf, 0xff);
|
||||
bytestream_put_byte(&out_buf, APP1);
|
||||
bytestream_put_be16(&out_buf, 42); /* size */
|
||||
bytestream_put_be32(&out_buf, 0);
|
||||
bytestream_put_buffer(&out_buf, "mjpg", 4);
|
||||
bytestream_put_be32(&out_buf, in->size + 44); /* field size */
|
||||
bytestream_put_be32(&out_buf, in->size + 44); /* pad field size */
|
||||
bytestream_put_be32(&out_buf, 0); /* next ptr */
|
||||
|
||||
for (i = 0; i < in->size - 1; i++) {
|
||||
if (in->data[i] == 0xff) {
|
||||
switch (in->data[i + 1]) {
|
||||
case DQT: dqt = i + 46; break;
|
||||
case DHT: dht = i + 46; break;
|
||||
case SOF0: sof0 = i + 46; break;
|
||||
case SOS:
|
||||
bytestream_put_be32(&poutbufp, dqt); /* quant off */
|
||||
bytestream_put_be32(&poutbufp, dht); /* huff off */
|
||||
bytestream_put_be32(&poutbufp, sof0); /* image off */
|
||||
bytestream_put_be32(&poutbufp, i + 46); /* scan off */
|
||||
bytestream_put_be32(&poutbufp, i + 46 + AV_RB16(buf + i + 2)); /* data off */
|
||||
bytestream_put_buffer(&poutbufp, buf + 2, buf_size - 2); /* skip already written SOI */
|
||||
*poutbuf_size = poutbufp - *poutbuf;
|
||||
return 1;
|
||||
bytestream_put_be32(&out_buf, dqt); /* quant off */
|
||||
bytestream_put_be32(&out_buf, dht); /* huff off */
|
||||
bytestream_put_be32(&out_buf, sof0); /* image off */
|
||||
bytestream_put_be32(&out_buf, i + 46); /* scan off */
|
||||
bytestream_put_be32(&out_buf, i + 46 + AV_RB16(in->data + i + 2)); /* data off */
|
||||
bytestream_put_buffer(&out_buf, in->data + 2, in->size - 2); /* skip already written SOI */
|
||||
|
||||
out->size = out_buf - out->data;
|
||||
av_packet_free(&in);
|
||||
return 0;
|
||||
case APP1:
|
||||
if (i + 8 < buf_size && AV_RL32(buf + i + 8) == AV_RL32("mjpg")) {
|
||||
av_log(avctx, AV_LOG_ERROR, "bitstream already formatted\n");
|
||||
memcpy(*poutbuf, buf, buf_size);
|
||||
*poutbuf_size = buf_size;
|
||||
return 1;
|
||||
if (i + 8 < in->size && AV_RL32(in->data + i + 8) == AV_RL32("mjpg")) {
|
||||
av_log(ctx, AV_LOG_ERROR, "bitstream already formatted\n");
|
||||
av_packet_unref(out);
|
||||
av_packet_move_ref(out, in);
|
||||
av_packet_free(&in);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
av_freep(poutbuf);
|
||||
av_log(avctx, AV_LOG_ERROR, "could not find SOS marker in bitstream\n");
|
||||
return 0;
|
||||
av_log(ctx, AV_LOG_ERROR, "could not find SOS marker in bitstream\n");
|
||||
fail:
|
||||
av_packet_unref(out);
|
||||
av_packet_free(&in);
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
|
||||
AVBitStreamFilter ff_mjpega_dump_header_bsf = {
|
||||
"mjpegadump",
|
||||
0,
|
||||
mjpega_dump_header,
|
||||
static const enum AVCodecID codec_ids[] = {
|
||||
AV_CODEC_ID_MJPEG, AV_CODEC_ID_NONE,
|
||||
};
|
||||
|
||||
const AVBitStreamFilter ff_mjpega_dump_header_bsf = {
|
||||
.name = "mjpegadump",
|
||||
.filter = mjpega_dump_header,
|
||||
.codec_ids = codec_ids,
|
||||
};
|
||||
|
@ -21,41 +21,79 @@
|
||||
#include "libavutil/common.h"
|
||||
#include "libavutil/intreadwrite.h"
|
||||
#include "avcodec.h"
|
||||
#include "bsf.h"
|
||||
|
||||
static int text2movsub(AVBSFContext *ctx, AVPacket *out)
|
||||
{
|
||||
AVPacket *in;
|
||||
int ret = 0;
|
||||
|
||||
static int text2movsub(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
|
||||
uint8_t **poutbuf, int *poutbuf_size,
|
||||
const uint8_t *buf, int buf_size, int keyframe){
|
||||
if (buf_size > 0xffff) return 0;
|
||||
*poutbuf_size = buf_size + 2;
|
||||
*poutbuf = av_malloc(*poutbuf_size + AV_INPUT_BUFFER_PADDING_SIZE);
|
||||
if (!*poutbuf)
|
||||
return AVERROR(ENOMEM);
|
||||
AV_WB16(*poutbuf, buf_size);
|
||||
memcpy(*poutbuf + 2, buf, buf_size);
|
||||
return 1;
|
||||
ret = ff_bsf_get_packet(ctx, &in);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (in->size > 0xffff) {
|
||||
ret = AVERROR_INVALIDDATA;
|
||||
goto fail;
|
||||
}
|
||||
|
||||
ret = av_new_packet(out, in->size + 2);
|
||||
if (ret < 0) {
|
||||
ret = AVERROR(ENOMEM);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
ret = av_packet_copy_props(out, in);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
AV_WB16(out->data, in->size);
|
||||
memcpy(out->data + 2, in->data, in->size);
|
||||
|
||||
fail:
|
||||
if (ret < 0)
|
||||
av_packet_unref(out);
|
||||
av_packet_free(&in);
|
||||
return ret;
|
||||
}
|
||||
|
||||
AVBitStreamFilter ff_text2movsub_bsf={
|
||||
"text2movsub",
|
||||
0,
|
||||
text2movsub,
|
||||
const AVBitStreamFilter ff_text2movsub_bsf = {
|
||||
.name = "text2movsub",
|
||||
.filter = text2movsub,
|
||||
};
|
||||
|
||||
static int mov2textsub(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
|
||||
uint8_t **poutbuf, int *poutbuf_size,
|
||||
const uint8_t *buf, int buf_size, int keyframe){
|
||||
if (buf_size < 2) return 0;
|
||||
*poutbuf_size = FFMIN(buf_size - 2, AV_RB16(buf));
|
||||
*poutbuf = av_malloc(*poutbuf_size + AV_INPUT_BUFFER_PADDING_SIZE);
|
||||
if (!*poutbuf)
|
||||
return AVERROR(ENOMEM);
|
||||
memcpy(*poutbuf, buf + 2, *poutbuf_size);
|
||||
return 1;
|
||||
static int mov2textsub(AVBSFContext *ctx, AVPacket *out)
|
||||
{
|
||||
AVPacket *in;
|
||||
int ret = 0;
|
||||
|
||||
ret = ff_bsf_get_packet(ctx, &in);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (in->size < 2) {
|
||||
ret = AVERROR_INVALIDDATA;
|
||||
goto fail;
|
||||
}
|
||||
|
||||
ret = av_new_packet(out, FFMIN(in->size - 2, AV_RB16(in->data)));
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
ret = av_packet_copy_props(out, in);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
memcpy(out->data, in->data + 2, out->size);
|
||||
|
||||
fail:
|
||||
if (ret < 0)
|
||||
av_packet_unref(out);
|
||||
av_packet_free(&in);
|
||||
return ret;
|
||||
}
|
||||
|
||||
AVBitStreamFilter ff_mov2textsub_bsf={
|
||||
"mov2textsub",
|
||||
0,
|
||||
mov2textsub,
|
||||
const AVBitStreamFilter ff_mov2textsub_bsf = {
|
||||
.name = "mov2textsub",
|
||||
.filter = mov2textsub,
|
||||
};
|
||||
|
@ -22,30 +22,67 @@
|
||||
#include <string.h>
|
||||
|
||||
#include "avcodec.h"
|
||||
#include "bsf.h"
|
||||
|
||||
#include "libavutil/log.h"
|
||||
#include "libavutil/mem.h"
|
||||
#include "libavutil/opt.h"
|
||||
|
||||
typedef struct NoiseContext {
|
||||
const AVClass *class;
|
||||
int amount;
|
||||
unsigned int state;
|
||||
} NoiseContext;
|
||||
|
||||
static int noise(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
|
||||
uint8_t **poutbuf, int *poutbuf_size,
|
||||
const uint8_t *buf, int buf_size, int keyframe){
|
||||
unsigned int *state= bsfc->priv_data;
|
||||
int amount= args ? atoi(args) : (*state % 10001+1);
|
||||
int i;
|
||||
static int noise(AVBSFContext *ctx, AVPacket *out)
|
||||
{
|
||||
NoiseContext *s = ctx->priv_data;
|
||||
AVPacket *in;
|
||||
int amount = s->amount > 0 ? s->amount : (s->state % 10001 + 1);
|
||||
int i, ret = 0;
|
||||
|
||||
*poutbuf= av_malloc(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
|
||||
if (!*poutbuf)
|
||||
return AVERROR(ENOMEM);
|
||||
memcpy(*poutbuf, buf, buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
|
||||
for(i=0; i<buf_size; i++){
|
||||
(*state) += (*poutbuf)[i] + 1;
|
||||
if(*state % amount == 0)
|
||||
(*poutbuf)[i] = *state;
|
||||
ret = ff_bsf_get_packet(ctx, &in);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret = av_new_packet(out, in->size);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
ret = av_packet_copy_props(out, in);
|
||||
if (ret < 0)
|
||||
goto fail;
|
||||
|
||||
memcpy(out->data, in->data, in->size);
|
||||
|
||||
for (i = 0; i < out->size; i++) {
|
||||
s->state += out->data[i] + 1;
|
||||
if (s->state % amount == 0)
|
||||
out->data[i] = s->state;
|
||||
}
|
||||
return 1;
|
||||
fail:
|
||||
if (ret < 0)
|
||||
av_packet_unref(out);
|
||||
av_packet_free(&in);
|
||||
return ret;
|
||||
}
|
||||
|
||||
AVBitStreamFilter ff_noise_bsf={
|
||||
"noise",
|
||||
sizeof(int),
|
||||
noise,
|
||||
#define OFFSET(x) offsetof(NoiseContext, x)
|
||||
static const AVOption options[] = {
|
||||
{ "amount", NULL, OFFSET(amount), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX },
|
||||
{ NULL },
|
||||
};
|
||||
|
||||
static const AVClass noise_class = {
|
||||
.class_name = "noise",
|
||||
.item_name = av_default_item_name,
|
||||
.option = options,
|
||||
.version = LIBAVUTIL_VERSION_INT,
|
||||
};
|
||||
|
||||
const AVBitStreamFilter ff_noise_bsf = {
|
||||
.name = "noise",
|
||||
.priv_data_size = sizeof(int),
|
||||
.priv_class = &noise_class,
|
||||
.filter = noise,
|
||||
};
|
||||
|
@ -18,39 +18,99 @@
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#include "libavutil/log.h"
|
||||
#include "libavutil/opt.h"
|
||||
|
||||
#include "avcodec.h"
|
||||
#include "bsf.h"
|
||||
|
||||
enum RemoveFreq {
|
||||
REMOVE_FREQ_KEYFRAME,
|
||||
REMOVE_FREQ_ALL,
|
||||
};
|
||||
|
||||
static int remove_extradata(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
|
||||
uint8_t **poutbuf, int *poutbuf_size,
|
||||
const uint8_t *buf, int buf_size, int keyframe){
|
||||
int cmd= args ? *args : 0;
|
||||
AVCodecParserContext *s;
|
||||
typedef struct RemoveExtradataContext {
|
||||
const AVClass *class;
|
||||
int freq;
|
||||
|
||||
if(!bsfc->parser){
|
||||
bsfc->parser= av_parser_init(avctx->codec_id);
|
||||
}
|
||||
s= bsfc->parser;
|
||||
AVCodecParserContext *parser;
|
||||
AVCodecContext *avctx;
|
||||
} RemoveExtradataContext;
|
||||
|
||||
if(s && s->parser->split){
|
||||
if( (((avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) ||
|
||||
(avctx->flags2 & AV_CODEC_FLAG2_LOCAL_HEADER)) && cmd == 'a')
|
||||
||(!keyframe && cmd=='k')
|
||||
||(cmd=='e' || !cmd)
|
||||
){
|
||||
int i= s->parser->split(avctx, buf, buf_size);
|
||||
buf += i;
|
||||
buf_size -= i;
|
||||
static int remove_extradata(AVBSFContext *ctx, AVPacket *out)
|
||||
{
|
||||
RemoveExtradataContext *s = ctx->priv_data;
|
||||
|
||||
AVPacket *in;
|
||||
int ret;
|
||||
|
||||
ret = ff_bsf_get_packet(ctx, &in);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
if (s->parser && s->parser->parser->split) {
|
||||
if (s->freq == REMOVE_FREQ_ALL ||
|
||||
(s->freq == REMOVE_FREQ_KEYFRAME && in->flags & AV_PKT_FLAG_KEY)) {
|
||||
int i = s->parser->parser->split(s->avctx, in->data, in->size);
|
||||
in->data += i;
|
||||
in->size -= i;
|
||||
}
|
||||
}
|
||||
*poutbuf= (uint8_t *) buf;
|
||||
*poutbuf_size= buf_size;
|
||||
|
||||
av_packet_move_ref(out, in);
|
||||
av_packet_free(&in);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
AVBitStreamFilter ff_remove_extradata_bsf={
|
||||
"remove_extra",
|
||||
0,
|
||||
remove_extradata,
|
||||
static int remove_extradata_init(AVBSFContext *ctx)
|
||||
{
|
||||
RemoveExtradataContext *s = ctx->priv_data;
|
||||
int ret;
|
||||
|
||||
s->parser = av_parser_init(ctx->par_in->codec_id);
|
||||
|
||||
if (s->parser) {
|
||||
s->avctx = avcodec_alloc_context3(NULL);
|
||||
if (!s->avctx)
|
||||
return AVERROR(ENOMEM);
|
||||
|
||||
ret = avcodec_parameters_to_context(s->avctx, ctx->par_in);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void remove_extradata_close(AVBSFContext *ctx)
|
||||
{
|
||||
RemoveExtradataContext *s = ctx->priv_data;
|
||||
|
||||
avcodec_free_context(&s->avctx);
|
||||
av_parser_close(s->parser);
|
||||
}
|
||||
|
||||
#define OFFSET(x) offsetof(RemoveExtradataContext, x)
|
||||
static const AVOption options[] = {
|
||||
{ "freq", NULL, OFFSET(freq), AV_OPT_TYPE_INT, { .i64 = REMOVE_FREQ_KEYFRAME }, REMOVE_FREQ_KEYFRAME, REMOVE_FREQ_ALL, 0, "freq" },
|
||||
{ "keyframe", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = REMOVE_FREQ_KEYFRAME }, .unit = "freq" },
|
||||
{ "all", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = REMOVE_FREQ_ALL }, .unit = "freq" },
|
||||
{ NULL },
|
||||
};
|
||||
|
||||
static const AVClass remove_extradata_class = {
|
||||
.class_name = "remove_extradata",
|
||||
.item_name = av_default_item_name,
|
||||
.option = options,
|
||||
.version = LIBAVUTIL_VERSION_INT,
|
||||
};
|
||||
|
||||
const AVBitStreamFilter ff_remove_extradata_bsf = {
|
||||
.name = "remove_extra",
|
||||
.priv_data_size = sizeof(RemoveExtradataContext),
|
||||
.priv_class = &remove_extradata_class,
|
||||
.init = remove_extradata_init,
|
||||
.close = remove_extradata_close,
|
||||
.filter = remove_extradata,
|
||||
};
|
||||
|
@ -28,7 +28,7 @@
|
||||
#include "libavutil/version.h"
|
||||
|
||||
#define LIBAVCODEC_VERSION_MAJOR 57
|
||||
#define LIBAVCODEC_VERSION_MINOR 14
|
||||
#define LIBAVCODEC_VERSION_MINOR 15
|
||||
#define LIBAVCODEC_VERSION_MICRO 0
|
||||
|
||||
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
|
||||
@ -197,5 +197,8 @@
|
||||
#ifndef FF_API_PRIVATE_OPT
|
||||
#define FF_API_PRIVATE_OPT (LIBAVCODEC_VERSION_MAJOR < 59)
|
||||
#endif
|
||||
#ifndef FF_API_OLD_BSF
|
||||
#define FF_API_OLD_BSF (LIBAVCODEC_VERSION_MAJOR < 59)
|
||||
#endif
|
||||
|
||||
#endif /* AVCODEC_VERSION_H */
|
||||
|
Loading…
Reference in New Issue
Block a user