mirror of https://git.ffmpeg.org/ffmpeg.git
avformat/av1dec: Deduplicate Annex B and low overhead OBU AV1 demuxer
Reviewed-by: James Almer <jamrial@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
parent
8a805095c1
commit
172116fd5d
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@ -29,6 +29,14 @@
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#include "avio_internal.h"
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#include "internal.h"
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typedef struct AV1DemuxContext {
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const AVClass *class;
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AVBSFContext *bsf;
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AVRational framerate;
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uint32_t temporal_unit_size;
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uint32_t frame_unit_size;
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} AV1DemuxContext;
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//return < 0 if we need more data
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static int get_score(int type, int *seq)
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{
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@ -48,14 +56,15 @@ static int get_score(int type, int *seq)
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return 0;
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}
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static int read_header(AVFormatContext *s, const AVRational *framerate, AVBSFContext **bsf, void *logctx)
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static int av1_read_header(AVFormatContext *s)
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{
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AV1DemuxContext *const c = s->priv_data;
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const AVBitStreamFilter *filter = av_bsf_get_by_name("av1_frame_merge");
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AVStream *st;
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int ret;
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if (!filter) {
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av_log(logctx, AV_LOG_ERROR, "av1_frame_merge bitstream filter "
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av_log(s, AV_LOG_ERROR, "av1_frame_merge bitstream filter "
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"not found. This is a bug, please report it.\n");
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return AVERROR_BUG;
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}
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@ -68,35 +77,49 @@ static int read_header(AVFormatContext *s, const AVRational *framerate, AVBSFCon
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st->codecpar->codec_id = AV_CODEC_ID_AV1;
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st->internal->need_parsing = AVSTREAM_PARSE_HEADERS;
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st->internal->avctx->framerate = *framerate;
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st->internal->avctx->framerate = c->framerate;
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// taken from rawvideo demuxers
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avpriv_set_pts_info(st, 64, 1, 1200000);
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ret = av_bsf_alloc(filter, bsf);
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ret = av_bsf_alloc(filter, &c->bsf);
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if (ret < 0)
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return ret;
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ret = avcodec_parameters_copy((*bsf)->par_in, st->codecpar);
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ret = avcodec_parameters_copy(c->bsf->par_in, st->codecpar);
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if (ret < 0)
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return ret;
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ret = av_bsf_init(*bsf);
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ret = av_bsf_init(c->bsf);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int av1_read_close(AVFormatContext *s)
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{
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AV1DemuxContext *const c = s->priv_data;
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av_bsf_free(&c->bsf);
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return 0;
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}
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#define DEC AV_OPT_FLAG_DECODING_PARAM
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#define OFFSET(x) offsetof(AV1DemuxContext, x)
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static const AVOption av1_options[] = {
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{ "framerate", "", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, DEC},
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{ NULL },
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};
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#undef OFFSET
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static const AVClass av1_demuxer_class = {
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.class_name = "AV1 Annex B/low overhead OBU demuxer",
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.item_name = av_default_item_name,
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.option = av1_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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#if CONFIG_AV1_DEMUXER
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typedef struct AnnexBContext {
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const AVClass *class;
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AVBSFContext *bsf;
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uint32_t temporal_unit_size;
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uint32_t frame_unit_size;
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AVRational framerate;
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} AnnexBContext;
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static int leb(AVIOContext *pb, uint32_t *len) {
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int more, i = 0;
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@ -193,15 +216,9 @@ static int annexb_probe(const AVProbeData *p)
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return 0;
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}
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static int annexb_read_header(AVFormatContext *s)
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{
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AnnexBContext *c = s->priv_data;
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return read_header(s, &c->framerate, &c->bsf, c);
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}
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static int annexb_read_packet(AVFormatContext *s, AVPacket *pkt)
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{
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AnnexBContext *c = s->priv_data;
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AV1DemuxContext *const c = s->priv_data;
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uint32_t obu_unit_size;
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int ret, len;
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@ -256,50 +273,22 @@ end:
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return ret;
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}
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static int annexb_read_close(AVFormatContext *s)
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{
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AnnexBContext *c = s->priv_data;
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av_bsf_free(&c->bsf);
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return 0;
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}
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#define OFFSET(x) offsetof(AnnexBContext, x)
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static const AVOption annexb_options[] = {
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{ "framerate", "", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, DEC},
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{ NULL },
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};
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#undef OFFSET
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static const AVClass annexb_demuxer_class = {
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.class_name = "AV1 Annex B demuxer",
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.item_name = av_default_item_name,
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.option = annexb_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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const AVInputFormat ff_av1_demuxer = {
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.name = "av1",
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.long_name = NULL_IF_CONFIG_SMALL("AV1 Annex B"),
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.priv_data_size = sizeof(AnnexBContext),
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.priv_data_size = sizeof(AV1DemuxContext),
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.flags_internal = FF_FMT_INIT_CLEANUP,
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.read_probe = annexb_probe,
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.read_header = annexb_read_header,
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.read_header = av1_read_header,
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.read_packet = annexb_read_packet,
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.read_close = annexb_read_close,
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.read_close = av1_read_close,
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.extensions = "obu",
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.flags = AVFMT_GENERIC_INDEX,
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.priv_class = &annexb_demuxer_class,
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.priv_class = &av1_demuxer_class,
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};
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#endif
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#if CONFIG_OBU_DEMUXER
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typedef struct ObuContext {
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const AVClass *class;
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AVBSFContext *bsf;
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AVRational framerate;
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} ObuContext;
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//For low overhead obu, we can't foresee the obu size before we parsed the header.
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//So, we can't use parse_obu_header here, since it will check size <= buf_size
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//see c27c7b49dc for more details
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@ -367,15 +356,9 @@ static int obu_probe(const AVProbeData *p)
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return 0;
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}
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static int obu_read_header(AVFormatContext *s)
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{
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ObuContext *c = s->priv_data;
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return read_header(s, &c->framerate, &c->bsf, c);
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}
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static int obu_get_packet(AVFormatContext *s, AVPacket *pkt)
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{
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ObuContext *c = s->priv_data;
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AV1DemuxContext *const c = s->priv_data;
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uint8_t header[MAX_OBU_HEADER_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
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int64_t obu_size;
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int size;
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@ -404,7 +387,7 @@ static int obu_get_packet(AVFormatContext *s, AVPacket *pkt)
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static int obu_read_packet(AVFormatContext *s, AVPacket *pkt)
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{
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ObuContext *c = s->priv_data;
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AV1DemuxContext *const c = s->priv_data;
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int ret;
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while (1) {
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@ -431,39 +414,17 @@ static int obu_read_packet(AVFormatContext *s, AVPacket *pkt)
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return ret;
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}
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static int obu_read_close(AVFormatContext *s)
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{
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ObuContext *c = s->priv_data;
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av_bsf_free(&c->bsf);
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return 0;
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}
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#define OFFSET(x) offsetof(ObuContext, x)
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static const AVOption obu_options[] = {
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{ "framerate", "", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, DEC},
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{ NULL },
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};
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#undef OFFSET
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static const AVClass obu_demuxer_class = {
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.class_name = "AV1 low overhead OBU demuxer",
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.item_name = av_default_item_name,
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.option = obu_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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const AVInputFormat ff_obu_demuxer = {
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.name = "obu",
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.long_name = NULL_IF_CONFIG_SMALL("AV1 low overhead OBU"),
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.priv_data_size = sizeof(ObuContext),
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.priv_data_size = sizeof(AV1DemuxContext),
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.flags_internal = FF_FMT_INIT_CLEANUP,
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.read_probe = obu_probe,
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.read_header = obu_read_header,
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.read_header = av1_read_header,
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.read_packet = obu_read_packet,
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.read_close = obu_read_close,
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.read_close = av1_read_close,
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.extensions = "obu",
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.flags = AVFMT_GENERIC_INDEX,
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.priv_class = &obu_demuxer_class,
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.priv_class = &av1_demuxer_class,
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};
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#endif
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