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author | Mark Thompson <sw@jkqxz.net> | 2017-05-04 23:06:20 +0100 |
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committer | Mark Thompson <sw@jkqxz.net> | 2017-08-12 22:17:20 +0100 |
commit | f11d8a5e8b185340cc50fcbc8a1437b0fbe7e931 (patch) | |
tree | 8b310c0a7b89baf349ddbc135ae4054e87e1814f /libavcodec | |
parent | 867381b8b51fa21fa2b8f071f508f3d39cc9c1f0 (diff) | |
download | ffmpeg-streaming-f11d8a5e8b185340cc50fcbc8a1437b0fbe7e931.zip ffmpeg-streaming-f11d8a5e8b185340cc50fcbc8a1437b0fbe7e931.tar.gz |
lavc: Add trace_headers bitstream filter
Supports all streams that the coded bitstream infrastructure does
(currently H.264 and H.265).
Diffstat (limited to 'libavcodec')
-rw-r--r-- | libavcodec/Makefile | 1 | ||||
-rw-r--r-- | libavcodec/bitstream_filters.c | 1 | ||||
-rw-r--r-- | libavcodec/trace_headers_bsf.c | 125 |
3 files changed, 127 insertions, 0 deletions
diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 9791fb3..09772a8 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -786,6 +786,7 @@ OBJS-$(CONFIG_NOISE_BSF) += noise_bsf.o OBJS-$(CONFIG_NULL_BSF) += null_bsf.o OBJS-$(CONFIG_REMOVE_EXTRADATA_BSF) += remove_extradata_bsf.o OBJS-$(CONFIG_TEXT2MOVSUB_BSF) += movsub_bsf.o +OBJS-$(CONFIG_TRACE_HEADERS_BSF) += trace_headers_bsf.o OBJS-$(CONFIG_VP9_RAW_REORDER_BSF) += vp9_raw_reorder_bsf.o OBJS-$(CONFIG_VP9_SUPERFRAME_BSF) += vp9_superframe_bsf.o OBJS-$(CONFIG_VP9_SUPERFRAME_SPLIT_BSF) += vp9_superframe_split_bsf.o diff --git a/libavcodec/bitstream_filters.c b/libavcodec/bitstream_filters.c index 79ce40f..2e423ac 100644 --- a/libavcodec/bitstream_filters.c +++ b/libavcodec/bitstream_filters.c @@ -38,6 +38,7 @@ extern const AVBitStreamFilter ff_null_bsf; extern const AVBitStreamFilter ff_text2movsub_bsf; extern const AVBitStreamFilter ff_noise_bsf; extern const AVBitStreamFilter ff_remove_extradata_bsf; +extern const AVBitStreamFilter ff_trace_headers_bsf; extern const AVBitStreamFilter ff_vp9_raw_reorder_bsf; extern const AVBitStreamFilter ff_vp9_superframe_bsf; extern const AVBitStreamFilter ff_vp9_superframe_split_bsf; diff --git a/libavcodec/trace_headers_bsf.c b/libavcodec/trace_headers_bsf.c new file mode 100644 index 0000000..2d1fe63 --- /dev/null +++ b/libavcodec/trace_headers_bsf.c @@ -0,0 +1,125 @@ +/* + * 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_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, +}; |