-#include <assert.h>
+#include "mux.h"
+#include <assert.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
#include <algorithm>
#include <mutex>
#include <string>
+#include <utility>
#include <vector>
+extern "C" {
+#include <libavformat/avio.h>
+#include <libavutil/avutil.h>
+#include <libavutil/dict.h>
+#include <libavutil/mathematics.h>
+#include <libavutil/mem.h>
+#include <libavutil/pixfmt.h>
+#include <libavutil/rational.h>
+}
+
#include "defs.h"
-#include "mux.h"
+#include "flags.h"
+#include "metrics.h"
#include "timebase.h"
using namespace std;
const AVFormatContext * const ctx;
};
-Mux::Mux(AVFormatContext *avctx, int width, int height, Codec video_codec, const string &video_extradata, const AVCodecContext *audio_ctx, int time_base, KeyFrameSignalReceiver *keyframe_signal_receiver)
- : avctx(avctx), keyframe_signal_receiver(keyframe_signal_receiver)
+Mux::Mux(AVFormatContext *avctx, int width, int height, Codec video_codec, const string &video_extradata, const AVCodecParameters *audio_codecpar, int time_base, std::function<void(int64_t)> write_callback, const vector<MuxMetrics *> &metrics)
+ : avctx(avctx), write_callback(write_callback), metrics(metrics)
{
- AVCodec *codec_video = avcodec_find_encoder((video_codec == CODEC_H264) ? AV_CODEC_ID_H264 : AV_CODEC_ID_RAWVIDEO);
- avstream_video = avformat_new_stream(avctx, codec_video);
+ avstream_video = avformat_new_stream(avctx, nullptr);
if (avstream_video == nullptr) {
fprintf(stderr, "avformat_new_stream() failed\n");
exit(1);
}
avstream_video->time_base = AVRational{1, time_base};
- avstream_video->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ avstream_video->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
if (video_codec == CODEC_H264) {
- avstream_video->codec->codec_id = AV_CODEC_ID_H264;
+ avstream_video->codecpar->codec_id = AV_CODEC_ID_H264;
} else {
assert(video_codec == CODEC_NV12);
- avstream_video->codec->codec_id = AV_CODEC_ID_RAWVIDEO;
- avstream_video->codec->codec_tag = avcodec_pix_fmt_to_codec_tag(AV_PIX_FMT_NV12);
+ avstream_video->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO;
+ avstream_video->codecpar->codec_tag = avcodec_pix_fmt_to_codec_tag(AV_PIX_FMT_NV12);
}
- avstream_video->codec->width = width;
- avstream_video->codec->height = height;
- avstream_video->codec->time_base = AVRational{1, time_base};
- avstream_video->codec->ticks_per_frame = 1; // or 2?
+ avstream_video->codecpar->width = width;
+ avstream_video->codecpar->height = height;
// Colorspace details. Closely correspond to settings in EffectChain_finalize,
// as noted in each comment.
// Note that the H.264 stream also contains this information and depending on the
// mux, this might simply get ignored. See sps_rbsp().
- avstream_video->codec->color_primaries = AVCOL_PRI_BT709; // RGB colorspace (inout_format.color_space).
- avstream_video->codec->color_trc = AVCOL_TRC_UNSPECIFIED; // Gamma curve (inout_format.gamma_curve).
- avstream_video->codec->colorspace = AVCOL_SPC_SMPTE170M; // YUV colorspace (output_ycbcr_format.luma_coefficients).
- avstream_video->codec->color_range = AVCOL_RANGE_MPEG; // Full vs. limited range (output_ycbcr_format.full_range).
- avstream_video->codec->chroma_sample_location = AVCHROMA_LOC_LEFT; // Chroma sample location. See chroma_offset_0[] in Mixer::subsample_chroma().
- avstream_video->codec->field_order = AV_FIELD_PROGRESSIVE;
+ // Note that there's no way to change this per-frame as the H.264 stream
+ // would like to be able to.
+ avstream_video->codecpar->color_primaries = AVCOL_PRI_BT709; // RGB colorspace (inout_format.color_space).
+ avstream_video->codecpar->color_trc = AVCOL_TRC_UNSPECIFIED; // Gamma curve (inout_format.gamma_curve).
+ // YUV colorspace (output_ycbcr_format.luma_coefficients).
+ if (global_flags.ycbcr_rec709_coefficients) {
+ avstream_video->codecpar->color_space = AVCOL_SPC_BT709;
+ } else {
+ avstream_video->codecpar->color_space = AVCOL_SPC_SMPTE170M;
+ }
+ avstream_video->codecpar->color_range = AVCOL_RANGE_MPEG; // Full vs. limited range (output_ycbcr_format.full_range).
+ avstream_video->codecpar->chroma_location = AVCHROMA_LOC_LEFT; // Chroma sample location. See chroma_offset_0[] in Mixer::subsample_chroma().
+ avstream_video->codecpar->field_order = AV_FIELD_PROGRESSIVE;
if (!video_extradata.empty()) {
- avstream_video->codec->extradata = (uint8_t *)av_malloc(video_extradata.size());
- avstream_video->codec->extradata_size = video_extradata.size();
- memcpy(avstream_video->codec->extradata, video_extradata.data(), video_extradata.size());
+ avstream_video->codecpar->extradata = (uint8_t *)av_malloc(video_extradata.size());
+ avstream_video->codecpar->extradata_size = video_extradata.size();
+ memcpy(avstream_video->codecpar->extradata, video_extradata.data(), video_extradata.size());
}
avstream_audio = avformat_new_stream(avctx, nullptr);
exit(1);
}
avstream_audio->time_base = AVRational{1, time_base};
- avcodec_copy_context(avstream_audio->codec, audio_ctx);
+ if (avcodec_parameters_copy(avstream_audio->codecpar, audio_codecpar) < 0) {
+ fprintf(stderr, "avcodec_parameters_copy() failed\n");
+ exit(1);
+ }
AVDictionary *options = NULL;
vector<pair<string, string>> opts = MUX_OPTS;
fprintf(stderr, "avformat_write_header() failed\n");
exit(1);
}
+ for (MuxMetrics *metric : metrics) {
+ metric->metric_written_bytes += avctx->pb->pos;
+ }
// Make sure the header is written before the constructor exits.
avio_flush(avctx->pb);
Mux::~Mux()
{
+ int64_t old_pos = avctx->pb->pos;
av_write_trailer(avctx);
- av_free(avctx->pb->buffer);
- av_free(avctx->pb);
+ for (MuxMetrics *metric : metrics) {
+ metric->metric_written_bytes += avctx->pb->pos - old_pos;
+ }
+
+ if (!(avctx->oformat->flags & AVFMT_NOFILE) &&
+ !(avctx->flags & AVFMT_FLAG_CUSTOM_IO)) {
+ avio_closep(&avctx->pb);
+ }
avformat_free_context(avctx);
}
if (plug_count > 0) {
plugged_packets.push_back(av_packet_clone(&pkt_copy));
} else {
- add_interleaved_packet(pkt_copy);
+ write_packet_or_die(pkt_copy);
}
}
av_packet_unref(&pkt_copy);
-}
-void Mux::add_interleaved_packet(const AVPacket &pkt)
-{
- if (waiting_packets.empty() || waiting_packets.front()->stream_index == pkt.stream_index) {
- // We could still get packets of the other type with earlier pts/dts,
- // so we'll have to queue and wait.
- waiting_packets.push(av_packet_clone(const_cast<AVPacket *>(&pkt)));
- return;
- }
-
- // Flush all the queued packets that are supposed to go before this.
- PacketBefore before(avctx);
- while (!waiting_packets.empty() && !before(&pkt, waiting_packets.front())) {
- AVPacket *queued_pkt = waiting_packets.front();
- waiting_packets.pop();
- write_packet_with_signal(*queued_pkt);
- av_packet_free(&queued_pkt);
- }
-
- if (waiting_packets.empty()) {
- waiting_packets.push(av_packet_clone(const_cast<AVPacket *>(&pkt)));
- } else {
- write_packet_with_signal(pkt);
+ // Note: This will be wrong in the case of plugged packets, but that only happens
+ // for network streams, not for files, and write callbacks are only really relevant
+ // for files. (We don't want to do this from write_packet_or_die, as it only has
+ // the rescaled pts, which is unsuitable for callback.)
+ if (pkt.stream_index == 0 && write_callback != nullptr) {
+ write_callback(pts);
}
}
-void Mux::write_packet_with_signal(const AVPacket &pkt)
+void Mux::write_packet_or_die(const AVPacket &pkt)
{
- if (keyframe_signal_receiver) {
- if (pkt.flags & AV_PKT_FLAG_KEY) {
- av_write_frame(avctx, nullptr);
- keyframe_signal_receiver->signal_keyframe();
+ for (MuxMetrics *metric : metrics) {
+ if (pkt.stream_index == 0) {
+ metric->metric_video_bytes += pkt.size;
+ } else if (pkt.stream_index == 1) {
+ metric->metric_audio_bytes += pkt.size;
+ } else {
+ assert(false);
}
}
- if (av_write_frame(avctx, const_cast<AVPacket *>(&pkt)) < 0) {
+ int64_t old_pos = avctx->pb->pos;
+ if (av_interleaved_write_frame(avctx, const_cast<AVPacket *>(&pkt)) < 0) {
fprintf(stderr, "av_interleaved_write_frame() failed\n");
exit(1);
}
avio_flush(avctx->pb);
+ for (MuxMetrics *metric : metrics) {
+ metric->metric_written_bytes += avctx->pb->pos - old_pos;
+ }
}
void Mux::plug()
sort(plugged_packets.begin(), plugged_packets.end(), PacketBefore(avctx));
for (AVPacket *pkt : plugged_packets) {
- add_interleaved_packet(*pkt);
+ write_packet_or_die(*pkt);
av_packet_free(&pkt);
}
plugged_packets.clear();
}
+
+void MuxMetrics::init(const vector<pair<string, string>> &labels)
+{
+ vector<pair<string, string>> labels_video = labels;
+ labels_video.emplace_back("stream", "video");
+ global_metrics.add("mux_stream_bytes", labels_video, &metric_video_bytes);
+
+ vector<pair<string, string>> labels_audio = labels;
+ labels_audio.emplace_back("stream", "audio");
+ global_metrics.add("mux_stream_bytes", labels_audio, &metric_audio_bytes);
+
+ global_metrics.add("mux_written_bytes", labels, &metric_written_bytes);
+}
projects / nageru / blobdiff