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lavf: update auto-bsf to new BSF API

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This commit is contained in:
Rodger Combs 2016-04-20 01:15:35 -05:00
parent 150e5e13b1
commit af7e2734b9
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GPG Key ID: E3E54DCDCD3CB843
4 changed files with 91 additions and 24 deletions
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5
libavformat/internal.h
View File

@ -135,11 +135,12 @@ struct AVStreamInternal {
int reorder;
/**
* bitstream filter to run on stream
* bitstream filters to run on stream
* - encoding: Set by muxer using ff_stream_add_bitstream_filter
* - decoding: unused
*/
AVBitStreamFilterContext *bsfc;
AVBSFContext **bsfcs;
int nb_bsfcs;
/**
* Whether or not check_bitstream should still be run on each packet

45
libavformat/mux.c
View File

@ -1082,7 +1082,7 @@ static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, in
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)
{
int ret, flush = 0;
int ret, flush = 0, i;
ret = prepare_input_packet(s, pkt);
if (ret < 0)
@ -1100,15 +1100,40 @@ int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)
}
}
av_apply_bitstream_filters(st->internal->avctx, pkt, st->internal->bsfc);
if (pkt->size == 0 && pkt->side_data_elems == 0)
return 0;
if (!st->codecpar->extradata && st->internal->avctx->extradata) {
int eret = ff_alloc_extradata(st->codecpar, st->internal->avctx->extradata_size);
if (eret < 0)
return AVERROR(ENOMEM);
st->codecpar->extradata_size = st->internal->avctx->extradata_size;
memcpy(st->codecpar->extradata, st->internal->avctx->extradata, st->internal->avctx->extradata_size);
for (i = 0; i < st->internal->nb_bsfcs; i++) {
AVBSFContext *ctx = st->internal->bsfcs[i];
if (i > 0) {
AVBSFContext* prev_ctx = st->internal->bsfcs[i - 1];
if (prev_ctx->par_out->extradata_size != ctx->par_in->extradata_size) {
if ((ret = avcodec_parameters_copy(ctx->par_in, prev_ctx->par_out)) < 0)
goto fail;
}
}
// TODO: when any bitstream filter requires flushing at EOF, we'll need to
// flush each stream's BSF chain on write_trailer.
if ((ret = av_bsf_send_packet(ctx, pkt)) < 0) {
av_log(ctx, AV_LOG_ERROR,
"Failed to send packet to filter %s for stream %d",
ctx->filter->name, pkt->stream_index);
goto fail;
}
// TODO: when any automatically-added bitstream filter is generating multiple
// output packets for a single input one, we'll need to call this in a loop
// and write each output packet.
if ((ret = av_bsf_receive_packet(ctx, pkt)) < 0) {
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
return 0;
av_log(ctx, AV_LOG_ERROR,
"Failed to send packet to filter %s for stream %d",
ctx->filter->name, pkt->stream_index);
goto fail;
}
if (i == st->internal->nb_bsfcs - 1) {
if (ctx->par_out->extradata_size != st->codecpar->extradata_size) {
if ((ret = avcodec_parameters_copy(st->codecpar, ctx->par_out)) < 0)
goto fail;
}
}
}
if (s->debug & FF_FDEBUG_TS)

6
libavformat/segment.c
View File

@ -966,8 +966,10 @@ static int seg_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
if (ret == 1) {
AVStream *st = s->streams[pkt->stream_index];
AVStream *ost = oc->streams[pkt->stream_index];
st->internal->bsfc = ost->internal->bsfc;
ost->internal->bsfc = NULL;
st->internal->bsfcs = ost->internal->bsfcs;
st->internal->nb_bsfcs = ost->internal->nb_bsfcs;
ost->internal->bsfcs = NULL;
ost->internal->nb_bsfcs = 0;
}
return ret;
}

59
libavformat/utils.c
View File

@ -3962,6 +3962,10 @@ static void free_stream(AVStream **pst)
if (st->internal) {
avcodec_free_context(&st->internal->avctx);
for (i = 0; i < st->internal->nb_bsfcs; i++) {
av_bsf_free(&st->internal->bsfcs[i]);
av_freep(&st->internal->bsfcs);
}
}
av_freep(&st->internal);
@ -4986,23 +4990,58 @@ uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
{
AVBitStreamFilterContext *bsfc = NULL;
AVBitStreamFilterContext **dest = &st->internal->bsfc;
while (*dest && (*dest)->next)
dest = &(*dest)->next;
int ret;
const AVBitStreamFilter *bsf;
AVBSFContext *bsfc;
AVCodecParameters *in_par;
if (!(bsfc = av_bitstream_filter_init(name))) {
if (!(bsf = av_bsf_get_by_name(name))) {
av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
return AVERROR(EINVAL);
return AVERROR_BSF_NOT_FOUND;
}
if (args && !(bsfc->args = av_strdup(args))) {
av_bitstream_filter_close(bsfc);
return AVERROR(ENOMEM);
if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
return ret;
if (st->internal->nb_bsfcs) {
in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
} else {
in_par = st->codecpar;
bsfc->time_base_in = st->time_base;
}
if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
av_bsf_free(&bsfc);
return ret;
}
if (args && bsfc->filter->priv_class) {
const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
const char * shorthand[2] = {NULL};
if (opt)
shorthand[0] = opt->name;
if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
av_bsf_free(&bsfc);
return ret;
}
}
if ((ret = av_bsf_init(bsfc)) < 0) {
av_bsf_free(&bsfc);
return ret;
}
if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
av_bsf_free(&bsfc);
return ret;
}
av_log(NULL, AV_LOG_VERBOSE,
"Automatically inserted bitstream filter '%s'; args='%s'\n",
name, args ? args : "");
*dest = bsfc;
return 1;
}