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/*
* 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 <stdio.h>
#include "libavutil/avstring.h"
#include "libavutil/common.h"
#include "libavutil/log.h"
#include "bsf.h"
#include "cbs.h"
typedef struct TraceHeadersContext {
CodedBitstreamContext *cbc;
} TraceHeadersContext;
static int trace_headers_init(AVBSFContext *bsf)
{
TraceHeadersContext *ctx = bsf->priv_data;
int err;
err = ff_cbs_init(&ctx->cbc, bsf->par_in->codec_id, bsf);
if (err < 0)
return err;
ctx->cbc->trace_enable = 1;
ctx->cbc->trace_level = AV_LOG_INFO;
if (bsf->par_in->extradata) {
CodedBitstreamFragment ps;
av_log(bsf, AV_LOG_INFO, "Extradata\n");
err = ff_cbs_read_extradata(ctx->cbc, &ps, bsf->par_in);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to read extradata.\n");
return err;
}
ff_cbs_fragment_uninit(ctx->cbc, &ps);
}
return 0;
}
static void trace_headers_close(AVBSFContext *bsf)
{
TraceHeadersContext *ctx = bsf->priv_data;
ff_cbs_close(&ctx->cbc);
}
static int trace_headers(AVBSFContext *bsf, AVPacket *out)
{
TraceHeadersContext *ctx = bsf->priv_data;
CodedBitstreamFragment au;
AVPacket *in;
char tmp[256] = { 0 };
int err;
err = ff_bsf_get_packet(bsf, &in);
if (err < 0)
return err;
if (in->flags & AV_PKT_FLAG_KEY)
av_strlcat(tmp, ", key frame", sizeof(tmp));
if (in->flags & AV_PKT_FLAG_CORRUPT)
av_strlcat(tmp, ", corrupt", sizeof(tmp));
if (in->pts != AV_NOPTS_VALUE)
av_strlcatf(tmp, sizeof(tmp), ", pts %"PRId64, in->pts);
else
av_strlcat(tmp, ", no pts", sizeof(tmp));
if (in->dts != AV_NOPTS_VALUE)
av_strlcatf(tmp, sizeof(tmp), ", dts %"PRId64, in->dts);
else
av_strlcat(tmp, ", no dts", sizeof(tmp));
if (in->duration > 0)
av_strlcatf(tmp, sizeof(tmp), ", duration %"PRId64, in->duration);
av_log(bsf, AV_LOG_INFO, "Packet: %d bytes%s.\n", in->size, tmp);
err = ff_cbs_read_packet(ctx->cbc, &au, in);
if (err < 0)
return err;
ff_cbs_fragment_uninit(ctx->cbc, &au);
av_packet_move_ref(out, in);
av_packet_free(&in);
return 0;
}
static const enum AVCodecID trace_headers_codec_ids[] = {
AV_CODEC_ID_H264,
AV_CODEC_ID_HEVC,
AV_CODEC_ID_MPEG2VIDEO,
AV_CODEC_ID_NONE,
};
const AVBitStreamFilter ff_trace_headers_bsf = {
.name = "trace_headers",
.priv_data_size = sizeof(TraceHeadersContext),
.init = &trace_headers_init,
.close = &trace_headers_close,
.filter = &trace_headers,
.codec_ids = trace_headers_codec_ids,
};
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