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From: Romain Beauxis <romain.beauxis@gmail.com>
To: ffmpeg-devel@ffmpeg.org
Date: Tue, 11 Mar 2025 11:55:07 -0500
Message-Id: <20250311165513.17834-3-romain.beauxis@gmail.com>
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Subject: [FFmpeg-devel] [PATCH v8 2/8] tests: Add stream dump test API util.
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---
tests/Makefile | 1 +
tests/api/Makefile | 2 +-
tests/api/api-dump-stream-meta-test.c | 179 ++++++++++++++++++++++++++
3 files changed, 181 insertions(+), 1 deletion(-)
create mode 100644 tests/api/api-dump-stream-meta-test.c
diff --git a/tests/Makefile b/tests/Makefile
index f9f5fc07f3..1f7e5003c2 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -277,6 +277,7 @@ $(FATE_FFPROBE) $(FATE_FFMPEG_FFPROBE) $(FATE_SAMPLES_FFPROBE) $(FATE_SAMPLES_FF
$(FATE_SAMPLES_FASTSTART): tools/qt-faststart$(EXESUF)
$(FATE_SAMPLES_DUMP_DATA) $(FATE_SAMPLES_DUMP_DATA-yes): tools/venc_data_dump$(EXESUF)
$(FATE_SAMPLES_SCALE_SLICE): tools/scale_slice_test$(EXESUF)
+$(FATE_SAMPLES_DUMP_STREAM_META): tests/api/api-dump-stream-meta-test$(EXESUF)
ifdef SAMPLES
FATE += $(FATE_EXTERN)
diff --git a/tests/api/Makefile b/tests/api/Makefile
index c96e636756..a2cb06a729 100644
--- a/tests/api/Makefile
+++ b/tests/api/Makefile
@@ -1,7 +1,7 @@
APITESTPROGS-$(call ENCDEC, FLAC, FLAC) += api-flac
APITESTPROGS-$(call DEMDEC, H264, H264) += api-h264
APITESTPROGS-$(call DEMDEC, H264, H264) += api-h264-slice
-APITESTPROGS-yes += api-seek
+APITESTPROGS-yes += api-seek api-dump-stream-meta
APITESTPROGS-$(call DEMDEC, H263, H263) += api-band
APITESTPROGS-$(HAVE_THREADS) += api-threadmessage
APITESTPROGS += $(APITESTPROGS-yes)
diff --git a/tests/api/api-dump-stream-meta-test.c b/tests/api/api-dump-stream-meta-test.c
new file mode 100644
index 0000000000..f44ad476e6
--- /dev/null
+++ b/tests/api/api-dump-stream-meta-test.c
@@ -0,0 +1,179 @@
+/*
+ * Copyright (c) 2025 Romain Beauxis
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * Dump stream metadata
+ */
+
+#include "libavcodec/avcodec.h"
+#include "libavformat/avformat.h"
+#include "libavutil/timestamp.h"
+
+static int dump_stream_meta(const char *input_filename) {
+ const AVCodec *codec = NULL;
+ AVPacket *pkt = NULL;
+ AVFrame *fr = NULL;
+ AVFormatContext *fmt_ctx = NULL;
+ AVCodecContext *ctx = NULL;
+ AVCodecParameters *origin_par = NULL;
+ AVStream *st;
+ int audio_stream;
+ int result;
+ char *metadata;
+
+ result = avformat_open_input(&fmt_ctx, input_filename, NULL, NULL);
+ if (result < 0) {
+ av_log(NULL, AV_LOG_ERROR, "Can't open file\n");
+ return result;
+ }
+
+ result = avformat_find_stream_info(fmt_ctx, NULL);
+ if (result < 0) {
+ av_log(NULL, AV_LOG_ERROR, "Can't get stream info\n");
+ goto end;
+ }
+
+ // TODO: add ability to work with video format
+ audio_stream =
+ av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_AUDIO, -1, -1, NULL, 0);
+ if (audio_stream < 0) {
+ av_log(NULL, AV_LOG_ERROR, "Can't find audio stream in input file\n");
+ result = audio_stream;
+ goto end;
+ }
+
+ origin_par = fmt_ctx->streams[audio_stream]->codecpar;
+ st = fmt_ctx->streams[audio_stream];
+
+ result = av_dict_get_string(st->metadata, &metadata, '=', ':');
+ if (result < 0)
+ goto end;
+
+ printf("Stream ID: %d, codec name: %s, metadata: %s\n", audio_stream,
+ avcodec_get_name(origin_par->codec_id), metadata);
+
+ codec = avcodec_find_decoder(origin_par->codec_id);
+ if (!codec) {
+ av_log(NULL, AV_LOG_ERROR, "Can't find decoder\n");
+ result = AVERROR_DECODER_NOT_FOUND;
+ goto end;
+ }
+
+ ctx = avcodec_alloc_context3(codec);
+ if (!ctx) {
+ av_log(NULL, AV_LOG_ERROR, "Can't allocate decoder context\n");
+ result = AVERROR(ENOMEM);
+ goto end;
+ }
+
+ result = avcodec_parameters_to_context(ctx, origin_par);
+ if (result) {
+ av_log(NULL, AV_LOG_ERROR, "Can't copy decoder context\n");
+ goto end;
+ }
+
+ result = avcodec_open2(ctx, codec, NULL);
+ if (result < 0) {
+ av_log(ctx, AV_LOG_ERROR, "Can't open decoder\n");
+ goto end;
+ }
+
+ pkt = av_packet_alloc();
+ if (!pkt) {
+ av_log(NULL, AV_LOG_ERROR, "Cannot allocate packet\n");
+ result = AVERROR(ENOMEM);
+ goto end;
+ }
+
+ fr = av_frame_alloc();
+ if (!fr) {
+ av_log(NULL, AV_LOG_ERROR, "Can't allocate frame\n");
+ result = AVERROR(ENOMEM);
+ goto end;
+ }
+
+ for (;;) {
+ result = av_read_frame(fmt_ctx, pkt);
+ if (result)
+ goto end;
+
+ if (pkt->stream_index != audio_stream) {
+ av_packet_unref(pkt);
+ continue;
+ }
+
+ printf("Stream ID: %d, packet PTS: %s, packet DTS: %s\n",
+ pkt->stream_index, av_ts2str(pkt->pts), av_ts2str(pkt->dts));
+
+ if (st->event_flags & AVSTREAM_EVENT_FLAG_METADATA_UPDATED) {
+ result = av_dict_get_string(st->metadata, &metadata, '=', ':');
+ if (result < 0)
+ goto end;
+
+ printf("Stream ID: %d, new metadata: %s\n", pkt->stream_index,
+ metadata);
+
+ st->event_flags &= ~AVSTREAM_EVENT_FLAG_METADATA_UPDATED;
+ }
+
+ result = avcodec_send_packet(ctx, pkt);
+ av_packet_unref(pkt);
+
+ if (result < 0)
+ goto end;
+
+ result = avcodec_receive_frame(ctx, fr);
+ if (result == AVERROR_EOF) {
+ result = 0;
+ goto end;
+ }
+
+ if (result == AVERROR(EAGAIN))
+ continue;
+
+ result = av_dict_get_string(fr->metadata, &metadata, '=', ':');
+ if (result < 0)
+ goto end;
+
+ printf("Stream ID: %d, frame PTS: %s, metadata: %s\n",
+ pkt->stream_index, av_ts2str(fr->pts), metadata);
+ }
+
+end:
+ av_packet_free(&pkt);
+ av_frame_free(&fr);
+ avformat_close_input(&fmt_ctx);
+ avcodec_free_context(&ctx);
+ return result;
+}
+
+int main(int argc, char **argv) {
+ if (argc < 2) {
+ av_log(NULL, AV_LOG_ERROR, "Incorrect input\n");
+ return 1;
+ }
+
+ if (dump_stream_meta(argv[1]) != AVERROR_EOF)
+ return 1;
+
+ return 0;
+}
--
2.39.5 (Apple Git-154)
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