mirror of https://git.ffmpeg.org/ffmpeg.git
lavc/mediacodecdec_h264: use ff_h264_decode_extradata to extract PPS/SPS
Fixes playback of HLS streams on MediaTek devices which requires PPS/SPS
to be set in their respective csd-{0,1} buffers.
This commit is contained in:
Matthieu Bouron
parent
72ed8d8bd2
commit
0cd5e281df
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@ -32,6 +32,7 @@
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#include "libavutil/atomic.h"
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#include "avcodec.h"
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#include "h264.h"
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#include "internal.h"
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#include "mediacodecdec.h"
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#include "mediacodec_wrapper.h"
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@ -50,104 +51,6 @@ typedef struct MediaCodecH264DecContext {
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} MediaCodecH264DecContext;
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static int h264_extradata_to_annexb_sps_pps(AVCodecContext *avctx,
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uint8_t **extradata_annexb, int *extradata_annexb_size,
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int *sps_offset, int *sps_size,
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int *pps_offset, int *pps_size)
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{
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uint16_t unit_size;
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uint64_t total_size = 0;
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uint8_t i, j, unit_nb;
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uint8_t sps_seen = 0;
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uint8_t pps_seen = 0;
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const uint8_t *extradata;
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static const uint8_t nalu_header[4] = { 0x00, 0x00, 0x00, 0x01 };
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if (avctx->extradata_size < 8) {
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av_log(avctx, AV_LOG_ERROR,
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"Too small extradata size, corrupted stream or invalid MP4/AVCC bitstream\n");
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return AVERROR(EINVAL);
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}
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*extradata_annexb = NULL;
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*extradata_annexb_size = 0;
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*sps_offset = *sps_size = 0;
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*pps_offset = *pps_size = 0;
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extradata = avctx->extradata + 4;
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/* skip length size */
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extradata++;
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for (j = 0; j < 2; j ++) {
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if (j == 0) {
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/* number of sps unit(s) */
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unit_nb = *extradata++ & 0x1f;
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} else {
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/* number of pps unit(s) */
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unit_nb = *extradata++;
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}
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for (i = 0; i < unit_nb; i++) {
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int err;
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unit_size = AV_RB16(extradata);
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total_size += unit_size + 4;
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if (total_size > INT_MAX) {
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av_log(avctx, AV_LOG_ERROR,
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"Too big extradata size, corrupted stream or invalid MP4/AVCC bitstream\n");
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av_freep(extradata_annexb);
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return AVERROR(EINVAL);
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}
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if (extradata + 2 + unit_size > avctx->extradata + avctx->extradata_size) {
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av_log(avctx, AV_LOG_ERROR, "Packet header is not contained in global extradata, "
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"corrupted stream or invalid MP4/AVCC bitstream\n");
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av_freep(extradata_annexb);
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return AVERROR(EINVAL);
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}
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if ((err = av_reallocp(extradata_annexb, total_size)) < 0) {
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return err;
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}
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memcpy(*extradata_annexb + total_size - unit_size - 4, nalu_header, 4);
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memcpy(*extradata_annexb + total_size - unit_size, extradata + 2, unit_size);
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extradata += 2 + unit_size;
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}
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if (unit_nb) {
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if (j == 0) {
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sps_seen = 1;
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*sps_size = total_size;
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} else {
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pps_seen = 1;
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*pps_size = total_size - *sps_size;
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*pps_offset = *sps_size;
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}
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}
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}
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*extradata_annexb_size = total_size;
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if (!sps_seen)
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av_log(avctx, AV_LOG_WARNING,
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"Warning: SPS NALU missing or invalid. "
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"The resulting stream may not play.\n");
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if (!pps_seen)
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av_log(avctx, AV_LOG_WARNING,
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"Warning: PPS NALU missing or invalid. "
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"The resulting stream may not play.\n");
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return 0;
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}
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static av_cold int mediacodec_decode_close(AVCodecContext *avctx)
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{
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MediaCodecH264DecContext *s = avctx->priv_data;
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@ -164,10 +67,20 @@ static av_cold int mediacodec_decode_close(AVCodecContext *avctx)
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static av_cold int mediacodec_decode_init(AVCodecContext *avctx)
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{
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int i;
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int ret;
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H264ParamSets ps;
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const PPS *pps = NULL;
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const SPS *sps = NULL;
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int is_avc = 0;
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int nal_length_size = 0;
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FFAMediaFormat *format = NULL;
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MediaCodecH264DecContext *s = avctx->priv_data;
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memset(&ps, 0, sizeof(ps));
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format = ff_AMediaFormat_new();
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if (!format) {
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av_log(avctx, AV_LOG_ERROR, "Failed to create media format\n");
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@ -179,24 +92,32 @@ static av_cold int mediacodec_decode_init(AVCodecContext *avctx)
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ff_AMediaFormat_setInt32(format, "width", avctx->width);
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ff_AMediaFormat_setInt32(format, "height", avctx->height);
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if (avctx->extradata[0] == 1) {
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uint8_t *extradata = NULL;
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int extradata_size = 0;
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ret = ff_h264_decode_extradata(avctx->extradata, avctx->extradata_size,
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&ps, &is_avc, &nal_length_size, 0, avctx);
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if (ret < 0) {
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goto done;
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}
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int sps_offset, sps_size;
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int pps_offset, pps_size;
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if ((ret = h264_extradata_to_annexb_sps_pps(avctx, &extradata, &extradata_size,
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&sps_offset, &sps_size, &pps_offset, &pps_size)) < 0) {
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goto done;
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for (i = 0; i < MAX_PPS_COUNT; i++) {
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if (ps.pps_list[i]) {
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pps = (const PPS*)ps.pps_list[i]->data;
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break;
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}
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}
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ff_AMediaFormat_setBuffer(format, "csd-0", extradata + sps_offset, sps_size);
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ff_AMediaFormat_setBuffer(format, "csd-1", extradata + pps_offset, pps_size);
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if (pps) {
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if (ps.sps_list[pps->sps_id]) {
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sps = (const SPS*)ps.sps_list[pps->sps_id]->data;
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}
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}
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av_freep(&extradata);
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if (pps && sps) {
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ff_AMediaFormat_setBuffer(format, "csd-0", (void*)sps->data, sps->data_size);
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ff_AMediaFormat_setBuffer(format, "csd-1", (void*)pps->data, pps->data_size);
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} else {
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ff_AMediaFormat_setBuffer(format, "csd-0", avctx->extradata, avctx->extradata_size);
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av_log(avctx, AV_LOG_ERROR, "Could not extract PPS/SPS from extradata");
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ret = AVERROR_INVALIDDATA;
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goto done;
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}
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if ((ret = ff_mediacodec_dec_init(avctx, &s->ctx, CODEC_MIME, format)) < 0) {
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@ -236,6 +157,9 @@ done:
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if (ret < 0) {
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mediacodec_decode_close(avctx);
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}
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ff_h264_ps_uninit(&ps);
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return ret;
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}
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