Add audio recording support
Make the recorder accept two input sources (video and audio), and mux them into a single file. PR #3757 <https://github.com/Genymobile/scrcpy/pull/3757>
This commit is contained in:
Romain Vimont
parent
3d29f6ef06
commit
7de0622214
3 changed files with 334 additions and 81 deletions
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@ -8,9 +8,11 @@
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#include "util/log.h"
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#include "util/str.h"
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/** Downcast video packet_sink to recorder */
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/** Downcast packet sinks to recorder */
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#define DOWNCAST_VIDEO(SINK) \
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container_of(SINK, struct sc_recorder, video_packet_sink)
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#define DOWNCAST_AUDIO(SINK) \
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container_of(SINK, struct sc_recorder, audio_packet_sink)
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static const AVRational SCRCPY_TIME_BASE = {1, 1000000}; // timestamps in us
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@ -79,9 +81,7 @@ sc_recorder_get_format_name(enum sc_record_format format) {
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}
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static bool
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sc_recorder_write_header(struct sc_recorder *recorder, const AVPacket *packet) {
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AVStream *ostream = recorder->ctx->streams[0];
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sc_recorder_set_extradata(AVStream *ostream, const AVPacket *packet) {
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uint8_t *extradata = av_malloc(packet->size * sizeof(uint8_t));
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if (!extradata) {
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LOG_OOM();
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@ -93,20 +93,32 @@ sc_recorder_write_header(struct sc_recorder *recorder, const AVPacket *packet) {
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ostream->codecpar->extradata = extradata;
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ostream->codecpar->extradata_size = packet->size;
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return avformat_write_header(recorder->ctx, NULL) >= 0;
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return true;
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}
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static void
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sc_recorder_rescale_packet(struct sc_recorder *recorder, AVPacket *packet) {
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AVStream *ostream = recorder->ctx->streams[0];
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av_packet_rescale_ts(packet, SCRCPY_TIME_BASE, ostream->time_base);
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static inline void
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sc_recorder_rescale_packet(AVStream *stream, AVPacket *packet) {
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av_packet_rescale_ts(packet, SCRCPY_TIME_BASE, stream->time_base);
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}
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static bool
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sc_recorder_write(struct sc_recorder *recorder, AVPacket *packet) {
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sc_recorder_rescale_packet(recorder, packet);
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return av_write_frame(recorder->ctx, packet) >= 0;
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sc_recorder_write_stream(struct sc_recorder *recorder, int stream_index,
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AVPacket *packet) {
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AVStream *stream = recorder->ctx->streams[stream_index];
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sc_recorder_rescale_packet(stream, packet);
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return av_interleaved_write_frame(recorder->ctx, packet) >= 0;
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}
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static inline bool
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sc_recorder_write_video(struct sc_recorder *recorder, AVPacket *packet) {
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return sc_recorder_write_stream(recorder, recorder->video_stream_index,
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packet);
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}
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static inline bool
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sc_recorder_write_audio(struct sc_recorder *recorder, AVPacket *packet) {
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return sc_recorder_write_stream(recorder, recorder->audio_stream_index,
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packet);
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}
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static bool
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@ -162,134 +174,270 @@ sc_recorder_wait_video_stream(struct sc_recorder *recorder) {
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sc_mutex_unlock(&recorder->mutex);
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if (codec) {
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AVStream *ostream = avformat_new_stream(recorder->ctx, codec);
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if (!ostream) {
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AVStream *stream = avformat_new_stream(recorder->ctx, codec);
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if (!stream) {
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return false;
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}
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ostream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
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ostream->codecpar->codec_id = codec->id;
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ostream->codecpar->format = AV_PIX_FMT_YUV420P;
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ostream->codecpar->width = recorder->declared_frame_size.width;
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ostream->codecpar->height = recorder->declared_frame_size.height;
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stream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
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stream->codecpar->codec_id = codec->id;
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stream->codecpar->format = AV_PIX_FMT_YUV420P;
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stream->codecpar->width = recorder->declared_frame_size.width;
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stream->codecpar->height = recorder->declared_frame_size.height;
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recorder->video_stream_index = stream->index;
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}
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return true;
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}
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static bool
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sc_recorder_wait_audio_stream(struct sc_recorder *recorder) {
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sc_mutex_lock(&recorder->mutex);
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while (!recorder->audio_codec && !recorder->stopped) {
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sc_cond_wait(&recorder->stream_cond, &recorder->mutex);
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}
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const AVCodec *codec = recorder->audio_codec;
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sc_mutex_unlock(&recorder->mutex);
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if (codec) {
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AVStream *stream = avformat_new_stream(recorder->ctx, codec);
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if (!stream) {
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return false;
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}
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stream->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
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stream->codecpar->codec_id = codec->id;
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stream->codecpar->ch_layout.nb_channels = 2;
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stream->codecpar->sample_rate = 48000;
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recorder->audio_stream_index = stream->index;
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}
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return true;
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}
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static inline bool
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sc_recorder_has_empty_queues(struct sc_recorder *recorder) {
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if (sc_queue_is_empty(&recorder->video_queue)) {
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// The video queue is empty
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return true;
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}
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if (recorder->audio && sc_queue_is_empty(&recorder->audio_queue)) {
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// The audio queue is empty (when audio is enabled)
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return true;
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}
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// No queue is empty
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return false;
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}
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static bool
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sc_recorder_process_header(struct sc_recorder *recorder) {
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sc_mutex_lock(&recorder->mutex);
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while (!recorder->stopped && sc_queue_is_empty(&recorder->video_queue)) {
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while (!recorder->stopped && sc_recorder_has_empty_queues(recorder)) {
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sc_cond_wait(&recorder->queue_cond, &recorder->mutex);
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}
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if (recorder->stopped && sc_queue_is_empty(&recorder->video_queue)) {
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if (sc_recorder_has_empty_queues(recorder)) {
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assert(recorder->stopped);
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sc_mutex_unlock(&recorder->mutex);
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return false;
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}
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struct sc_record_packet *rec;
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sc_queue_take(&recorder->video_queue, next, &rec);
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struct sc_record_packet *video_pkt;
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sc_queue_take(&recorder->video_queue, next, &video_pkt);
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struct sc_record_packet *audio_pkt;
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if (recorder->audio) {
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sc_queue_take(&recorder->audio_queue, next, &audio_pkt);
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}
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sc_mutex_unlock(&recorder->mutex);
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if (rec->packet->pts != AV_NOPTS_VALUE) {
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LOGE("The first packet is not a config packet");
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sc_record_packet_delete(rec);
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return false;
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int ret = false;
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if (video_pkt->packet->pts != AV_NOPTS_VALUE) {
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LOGE("The first video packet is not a config packet");
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goto end;
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}
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bool ok = sc_recorder_write_header(recorder, rec->packet);
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sc_record_packet_delete(rec);
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assert(recorder->video_stream_index >= 0);
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AVStream *video_stream =
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recorder->ctx->streams[recorder->video_stream_index];
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bool ok = sc_recorder_set_extradata(video_stream, video_pkt->packet);
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if (!ok) {
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goto end;
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}
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if (recorder->audio) {
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if (audio_pkt->packet->pts != AV_NOPTS_VALUE) {
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LOGE("The first audio packet is not a config packet");
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goto end;
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}
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assert(recorder->audio_stream_index >= 0);
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AVStream *audio_stream =
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recorder->ctx->streams[recorder->audio_stream_index];
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ok = sc_recorder_set_extradata(audio_stream, audio_pkt->packet);
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if (!ok) {
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goto end;
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}
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}
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ok = avformat_write_header(recorder->ctx, NULL) >= 0;
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if (!ok) {
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LOGE("Failed to write header to %s", recorder->filename);
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return false;
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goto end;
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}
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return true;
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ret = true;
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end:
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sc_record_packet_delete(video_pkt);
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if (recorder->audio) {
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sc_record_packet_delete(audio_pkt);
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}
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return ret;
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}
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static bool
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sc_recorder_process_packets(struct sc_recorder *recorder) {
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int64_t pts_origin = AV_NOPTS_VALUE;
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// We can write a packet only once we received the next one so that we can
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// set its duration (next_pts - current_pts)
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struct sc_record_packet *previous = NULL;
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bool header_written = sc_recorder_process_header(recorder);
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if (!header_written) {
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return false;
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}
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struct sc_record_packet *video_pkt = NULL;
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struct sc_record_packet *audio_pkt = NULL;
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// We can write a video packet only once we received the next one so that
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// we can set its duration (next_pts - current_pts)
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struct sc_record_packet *video_pkt_previous = NULL;
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bool error = false;
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for (;;) {
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sc_mutex_lock(&recorder->mutex);
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while (!recorder->stopped
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&& sc_queue_is_empty(&recorder->video_queue)) {
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while (!recorder->stopped) {
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if (!video_pkt && !sc_queue_is_empty(&recorder->video_queue)) {
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// A new packet may be assigned to video_pkt and be processed
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break;
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}
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if (recorder->audio && !audio_pkt
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&& !sc_queue_is_empty(&recorder->audio_queue)) {
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// A new packet may be assigned to audio_pkt and be processed
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break;
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}
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sc_cond_wait(&recorder->queue_cond, &recorder->mutex);
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}
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// if stopped is set, continue to process the remaining events (to
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// finish the recording) before actually stopping
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// If stopped is set, continue to process the remaining events (to
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// finish the recording) before actually stopping.
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if (recorder->stopped && sc_queue_is_empty(&recorder->video_queue)) {
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// If there is no audio, then the audio_queue will remain empty forever
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// and audio_pkt will always be NULL.
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assert(recorder->audio
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|| (!audio_pkt && sc_queue_is_empty(&recorder->audio_queue)));
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if (!video_pkt && !sc_queue_is_empty(&recorder->video_queue)) {
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sc_queue_take(&recorder->video_queue, next, &video_pkt);
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}
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if (!audio_pkt && !sc_queue_is_empty(&recorder->audio_queue)) {
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sc_queue_take(&recorder->audio_queue, next, &audio_pkt);
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}
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if (recorder->stopped && !video_pkt && !audio_pkt) {
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assert(sc_queue_is_empty(&recorder->video_queue));
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assert(sc_queue_is_empty(&recorder->audio_queue));
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sc_mutex_unlock(&recorder->mutex);
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break;
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}
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struct sc_record_packet *rec;
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sc_queue_take(&recorder->video_queue, next, &rec);
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assert(video_pkt || audio_pkt); // at least one
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sc_mutex_unlock(&recorder->mutex);
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if (rec->packet->pts == AV_NOPTS_VALUE) {
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// Ignore further config packets (e.g. on device orientation
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// change). The next non-config packet will have the config packet
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// data prepended.
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sc_record_packet_delete(rec);
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} else {
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assert(rec->packet->pts != AV_NOPTS_VALUE);
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if (video_pkt && video_pkt->packet->pts == AV_NOPTS_VALUE) {
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sc_record_packet_delete(video_pkt);
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video_pkt = NULL;
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}
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if (!previous) {
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// This is the first non-config packet
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assert(pts_origin == AV_NOPTS_VALUE);
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pts_origin = rec->packet->pts;
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rec->packet->pts = 0;
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rec->packet->dts = 0;
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previous = rec;
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if (audio_pkt && audio_pkt->packet->pts == AV_NOPTS_VALUE) {
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sc_record_packet_delete(audio_pkt);
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audio_pkt= NULL;
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}
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if (pts_origin == AV_NOPTS_VALUE) {
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if (!recorder->audio) {
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assert(video_pkt);
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pts_origin = video_pkt->packet->pts;
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} else if (video_pkt && audio_pkt) {
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pts_origin =
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MIN(video_pkt->packet->pts, audio_pkt->packet->pts);
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} else {
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// We need both video and audio packets to initialize pts_origin
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continue;
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}
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}
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assert(previous);
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assert(pts_origin != AV_NOPTS_VALUE);
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rec->packet->pts -= pts_origin;
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rec->packet->dts = rec->packet->pts;
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if (video_pkt) {
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video_pkt->packet->pts -= pts_origin;
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video_pkt->packet->dts = video_pkt->packet->pts;
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if (video_pkt_previous) {
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// we now know the duration of the previous packet
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previous->packet->duration =
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rec->packet->pts - previous->packet->pts;
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video_pkt_previous->packet->duration =
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video_pkt->packet->pts - video_pkt_previous->packet->pts;
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bool ok = sc_recorder_write(recorder, previous->packet);
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sc_record_packet_delete(previous);
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bool ok = sc_recorder_write_video(recorder,
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video_pkt_previous->packet);
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sc_record_packet_delete(video_pkt_previous);
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if (!ok) {
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LOGE("Could not record packet");
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return false;
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}
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previous = rec;
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LOGE("Could not record video packet");
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error = true;
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goto end;
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}
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}
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// Write the last packet
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struct sc_record_packet *last = previous;
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video_pkt_previous = video_pkt;
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video_pkt = NULL;
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}
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if (audio_pkt) {
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audio_pkt->packet->pts -= pts_origin;
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audio_pkt->packet->dts = audio_pkt->packet->pts;
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bool ok = sc_recorder_write_audio(recorder, audio_pkt->packet);
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if (!ok) {
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LOGE("Could not record audio packet");
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error = true;
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goto end;
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}
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sc_record_packet_delete(audio_pkt);
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audio_pkt = NULL;
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}
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}
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// Write the last video packet
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struct sc_record_packet *last = video_pkt_previous;
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if (last) {
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// assign an arbitrary duration to the last packet
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last->packet->duration = 100000;
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bool ok = sc_recorder_write(recorder, last->packet);
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bool ok = sc_recorder_write_video(recorder, last->packet);
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if (!ok) {
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// failing to write the last frame is not very serious, no
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// future frame may depend on it, so the resulting file
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@ -302,10 +450,18 @@ sc_recorder_process_packets(struct sc_recorder *recorder) {
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int ret = av_write_trailer(recorder->ctx);
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if (ret < 0) {
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LOGE("Failed to write trailer to %s", recorder->filename);
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return false;
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error = false;
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}
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return true;
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end:
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if (video_pkt) {
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sc_record_packet_delete(video_pkt);
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}
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if (audio_pkt) {
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sc_record_packet_delete(audio_pkt);
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}
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return !error;
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}
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static bool
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@ -321,6 +477,14 @@ sc_recorder_record(struct sc_recorder *recorder) {
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return false;
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}
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if (recorder->audio) {
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ok = sc_recorder_wait_audio_stream(recorder);
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if (!ok) {
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sc_recorder_close_output_file(recorder);
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return false;
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}
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}
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// If recorder->stopped, process any queued packet anyway
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ok = sc_recorder_process_packets(recorder);
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@ -339,6 +503,7 @@ run_recorder(void *data) {
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recorder->stopped = true;
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// Discard pending packets
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sc_recorder_queue_clear(&recorder->video_queue);
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sc_recorder_queue_clear(&recorder->audio_queue);
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sc_mutex_unlock(&recorder->mutex);
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if (success) {
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@ -406,6 +571,8 @@ sc_recorder_video_packet_sink_push(struct sc_packet_sink *sink,
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return false;
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}
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rec->packet->stream_index = recorder->video_stream_index;
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sc_queue_push(&recorder->video_queue, next, rec);
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sc_cond_signal(&recorder->queue_cond);
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@ -413,9 +580,66 @@ sc_recorder_video_packet_sink_push(struct sc_packet_sink *sink,
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return true;
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}
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static bool
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sc_recorder_audio_packet_sink_open(struct sc_packet_sink *sink,
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const AVCodec *codec) {
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struct sc_recorder *recorder = DOWNCAST_AUDIO(sink);
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assert(recorder->audio);
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assert(codec);
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sc_mutex_lock(&recorder->mutex);
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recorder->audio_codec = codec;
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sc_cond_signal(&recorder->stream_cond);
|
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sc_mutex_unlock(&recorder->mutex);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static void
|
||||
sc_recorder_audio_packet_sink_close(struct sc_packet_sink *sink) {
|
||||
struct sc_recorder *recorder = DOWNCAST_AUDIO(sink);
|
||||
assert(recorder->audio);
|
||||
|
||||
sc_mutex_lock(&recorder->mutex);
|
||||
// EOS also stops the recorder
|
||||
recorder->stopped = true;
|
||||
sc_cond_signal(&recorder->queue_cond);
|
||||
sc_mutex_unlock(&recorder->mutex);
|
||||
}
|
||||
|
||||
static bool
|
||||
sc_recorder_audio_packet_sink_push(struct sc_packet_sink *sink,
|
||||
const AVPacket *packet) {
|
||||
struct sc_recorder *recorder = DOWNCAST_AUDIO(sink);
|
||||
assert(recorder->audio);
|
||||
|
||||
sc_mutex_lock(&recorder->mutex);
|
||||
|
||||
if (recorder->stopped) {
|
||||
// reject any new packet
|
||||
sc_mutex_unlock(&recorder->mutex);
|
||||
return false;
|
||||
}
|
||||
|
||||
struct sc_record_packet *rec = sc_record_packet_new(packet);
|
||||
if (!rec) {
|
||||
LOG_OOM();
|
||||
sc_mutex_unlock(&recorder->mutex);
|
||||
return false;
|
||||
}
|
||||
|
||||
rec->packet->stream_index = recorder->audio_stream_index;
|
||||
|
||||
sc_queue_push(&recorder->audio_queue, next, rec);
|
||||
sc_cond_signal(&recorder->queue_cond);
|
||||
|
||||
sc_mutex_unlock(&recorder->mutex);
|
||||
return true;
|
||||
}
|
||||
|
||||
bool
|
||||
sc_recorder_init(struct sc_recorder *recorder, const char *filename,
|
||||
enum sc_record_format format,
|
||||
enum sc_record_format format, bool audio,
|
||||
struct sc_size declared_frame_size,
|
||||
const struct sc_recorder_callbacks *cbs, void *cbs_userdata) {
|
||||
recorder->filename = strdup(filename);
|
||||
|
|
@ -439,10 +663,17 @@ sc_recorder_init(struct sc_recorder *recorder, const char *filename,
|
|||
goto error_queue_cond_destroy;
|
||||
}
|
||||
|
||||
recorder->audio = audio;
|
||||
|
||||
sc_queue_init(&recorder->video_queue);
|
||||
sc_queue_init(&recorder->audio_queue);
|
||||
recorder->stopped = false;
|
||||
|
||||
recorder->video_codec = NULL;
|
||||
recorder->audio_codec = NULL;
|
||||
|
||||
recorder->video_stream_index = -1;
|
||||
recorder->audio_stream_index = -1;
|
||||
|
||||
recorder->format = format;
|
||||
recorder->declared_frame_size = declared_frame_size;
|
||||
|
|
@ -459,6 +690,16 @@ sc_recorder_init(struct sc_recorder *recorder, const char *filename,
|
|||
|
||||
recorder->video_packet_sink.ops = &video_ops;
|
||||
|
||||
if (audio) {
|
||||
static const struct sc_packet_sink_ops audio_ops = {
|
||||
.open = sc_recorder_audio_packet_sink_open,
|
||||
.close = sc_recorder_audio_packet_sink_close,
|
||||
.push = sc_recorder_audio_packet_sink_push,
|
||||
};
|
||||
|
||||
recorder->audio_packet_sink.ops = &audio_ops;
|
||||
}
|
||||
|
||||
return true;
|
||||
|
||||
error_queue_cond_destroy:
|
||||
|
|
|
|||
|
|
@ -20,7 +20,10 @@ struct sc_record_packet {
|
|||
struct sc_recorder_queue SC_QUEUE(struct sc_record_packet);
|
||||
|
||||
struct sc_recorder {
|
||||
struct sc_packet_sink video_packet_sink; // packet sink trait
|
||||
struct sc_packet_sink video_packet_sink;
|
||||
struct sc_packet_sink audio_packet_sink;
|
||||
|
||||
bool audio;
|
||||
|
||||
char *filename;
|
||||
enum sc_record_format format;
|
||||
|
|
@ -33,10 +36,15 @@ struct sc_recorder {
|
|||
// set on sc_recorder_stop(), packet_sink close or recording failure
|
||||
bool stopped;
|
||||
struct sc_recorder_queue video_queue;
|
||||
struct sc_recorder_queue audio_queue;
|
||||
|
||||
// wake up the recorder thread once the video codec is known
|
||||
// wake up the recorder thread once the video or audio codec is known
|
||||
sc_cond stream_cond;
|
||||
const AVCodec *video_codec;
|
||||
const AVCodec *audio_codec;
|
||||
|
||||
int video_stream_index;
|
||||
int audio_stream_index;
|
||||
|
||||
const struct sc_recorder_callbacks *cbs;
|
||||
void *cbs_userdata;
|
||||
|
|
@ -49,7 +57,7 @@ struct sc_recorder_callbacks {
|
|||
|
||||
bool
|
||||
sc_recorder_init(struct sc_recorder *recorder, const char *filename,
|
||||
enum sc_record_format format,
|
||||
enum sc_record_format format, bool audio,
|
||||
struct sc_size declared_frame_size,
|
||||
const struct sc_recorder_callbacks *cbs, void *cbs_userdata);
|
||||
|
||||
|
|
|
|||
|
|
@ -424,8 +424,8 @@ scrcpy(struct scrcpy_options *options) {
|
|||
.on_ended = sc_recorder_on_ended,
|
||||
};
|
||||
if (!sc_recorder_init(&s->recorder, options->record_filename,
|
||||
options->record_format, info->frame_size,
|
||||
&recorder_cbs, NULL)) {
|
||||
options->record_format, options->audio,
|
||||
info->frame_size, &recorder_cbs, NULL)) {
|
||||
goto end;
|
||||
}
|
||||
recorder_initialized = true;
|
||||
|
|
@ -436,6 +436,10 @@ scrcpy(struct scrcpy_options *options) {
|
|||
recorder_started = true;
|
||||
|
||||
sc_demuxer_add_sink(&s->video_demuxer, &s->recorder.video_packet_sink);
|
||||
if (options->audio) {
|
||||
sc_demuxer_add_sink(&s->audio_demuxer,
|
||||
&s->recorder.audio_packet_sink);
|
||||
}
|
||||
}
|
||||
|
||||
struct sc_controller *controller = NULL;
|
||||
|
|
|
|||
Loading…
Reference in a new issue