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h264_redundant_pps_bsf: Use common cbs bsf implementation

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This commit is contained in:
Mark Thompson 2021-01-01 21:35:23 +00:00
parent 375176a540
commit fa75e43875
1 changed files with 21 additions and 78 deletions
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99
libavcodec/h264_redundant_pps_bsf.c
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@ -24,15 +24,13 @@
#include "bsf.h"
#include "bsf_internal.h"
#include "cbs.h"
#include "cbs_bsf.h"
#include "cbs_h264.h"
#include "h264.h"
typedef struct H264RedundantPPSContext {
CodedBitstreamContext *input;
CodedBitstreamContext *output;
CodedBitstreamFragment access_unit;
CBSBSFContext common;
int global_pic_init_qp;
int current_pic_init_qp;
@ -49,7 +47,7 @@ static int h264_redundant_pps_fixup_pps(H264RedundantPPSContext *ctx,
// The changes we are about to perform affect the parsing process,
// so we must make sure that the PPS is writable, otherwise the
// parsing of future slices will be incorrect and even raise errors.
err = ff_cbs_make_unit_writable(ctx->input, unit);
err = ff_cbs_make_unit_writable(ctx->common.input, unit);
if (err < 0)
return err;
pps = unit->content;
@ -78,21 +76,14 @@ static int h264_redundant_pps_fixup_slice(H264RedundantPPSContext *ctx,
return 0;
}
static int h264_redundant_pps_filter(AVBSFContext *bsf, AVPacket *pkt)
static int h264_redundant_pps_update_fragment(AVBSFContext *bsf,
AVPacket *pkt,
CodedBitstreamFragment *au)
{
H264RedundantPPSContext *ctx = bsf->priv_data;
CodedBitstreamFragment *au = &ctx->access_unit;
int au_has_sps;
int err, i;
err = ff_bsf_get_packet_ref(bsf, pkt);
if (err < 0)
return err;
err = ff_cbs_read_packet(ctx->input, au, pkt);
if (err < 0)
goto fail;
au_has_sps = 0;
for (i = 0; i < au->nb_units; i++) {
CodedBitstreamUnit *nal = &au->units[i];
@ -102,7 +93,7 @@ static int h264_redundant_pps_filter(AVBSFContext *bsf, AVPacket *pkt)
if (nal->type == H264_NAL_PPS) {
err = h264_redundant_pps_fixup_pps(ctx, nal);
if (err < 0)
goto fail;
return err;
if (!au_has_sps) {
av_log(bsf, AV_LOG_VERBOSE, "Deleting redundant PPS "
"at %"PRId64".\n", pkt->pts);
@ -118,62 +109,7 @@ static int h264_redundant_pps_filter(AVBSFContext *bsf, AVPacket *pkt)
}
}
err = ff_cbs_write_packet(ctx->output, pkt, au);
if (err < 0)
goto fail;
err = 0;
fail:
ff_cbs_fragment_reset(au);
if (err < 0)
av_packet_unref(pkt);
return err;
}
static int h264_redundant_pps_init(AVBSFContext *bsf)
{
H264RedundantPPSContext *ctx = bsf->priv_data;
CodedBitstreamFragment *au = &ctx->access_unit;
int err, i;
err = ff_cbs_init(&ctx->input, AV_CODEC_ID_H264, bsf);
if (err < 0)
return err;
err = ff_cbs_init(&ctx->output, AV_CODEC_ID_H264, bsf);
if (err < 0)
return err;
ctx->global_pic_init_qp = 26;
if (bsf->par_in->extradata) {
err = ff_cbs_read_extradata(ctx->input, au, bsf->par_in);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to read extradata.\n");
goto fail;
}
for (i = 0; i < au->nb_units; i++) {
if (au->units[i].type == H264_NAL_PPS) {
err = h264_redundant_pps_fixup_pps(ctx, &au->units[i]);
if (err < 0)
goto fail;
}
}
ctx->extradata_pic_init_qp = ctx->current_pic_init_qp;
err = ff_cbs_write_extradata(ctx->output, bsf->par_out, au);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to write extradata.\n");
goto fail;
}
}
err = 0;
fail:
ff_cbs_fragment_reset(au);
return err;
return 0;
}
static void h264_redundant_pps_flush(AVBSFContext *bsf)
@ -182,13 +118,20 @@ static void h264_redundant_pps_flush(AVBSFContext *bsf)
ctx->current_pic_init_qp = ctx->extradata_pic_init_qp;
}
static void h264_redundant_pps_close(AVBSFContext *bsf)
static const CBSBSFType h264_redundant_pps_type = {
.codec_id = AV_CODEC_ID_H264,
.fragment_name = "access unit",
.unit_name = "NAL unit",
.update_fragment = &h264_redundant_pps_update_fragment,
};
static int h264_redundant_pps_init(AVBSFContext *bsf)
{
H264RedundantPPSContext *ctx = bsf->priv_data;
ff_cbs_fragment_free(&ctx->access_unit);
ff_cbs_close(&ctx->input);
ff_cbs_close(&ctx->output);
ctx->global_pic_init_qp = 26;
return ff_cbs_bsf_generic_init(bsf, &h264_redundant_pps_type);
}
static const enum AVCodecID h264_redundant_pps_codec_ids[] = {
@ -200,7 +143,7 @@ const AVBitStreamFilter ff_h264_redundant_pps_bsf = {
.priv_data_size = sizeof(H264RedundantPPSContext),
.init = &h264_redundant_pps_init,
.flush = &h264_redundant_pps_flush,
.close = &h264_redundant_pps_close,
.filter = &h264_redundant_pps_filter,
.close = &ff_cbs_bsf_generic_close,
.filter = &ff_cbs_bsf_generic_filter,
.codec_ids = h264_redundant_pps_codec_ids,
};