1 #include "video_encoder.h"
11 #include "quicksync_encoder.h"
12 #include "x264_encoder.h"
15 using namespace movit;
19 string generate_local_dump_filename(int frame)
21 time_t now = time(NULL);
23 localtime_r(&now, &now_tm);
26 strftime(timestamp, sizeof(timestamp), "%F-%T%z", &now_tm);
28 // Use the frame number to disambiguate between two cuts starting
29 // on the same second.
31 snprintf(filename, sizeof(filename), "%s%s-f%02d%s",
32 LOCAL_DUMP_PREFIX, timestamp, frame % 100, LOCAL_DUMP_SUFFIX);
38 VideoEncoder::VideoEncoder(ResourcePool *resource_pool, QSurface *surface, const std::string &va_display, int width, int height, HTTPD *httpd)
39 : resource_pool(resource_pool), surface(surface), va_display(va_display), width(width), height(height), httpd(httpd)
41 oformat = av_guess_format(global_flags.stream_mux_name.c_str(), nullptr, nullptr);
42 assert(oformat != nullptr);
43 if (global_flags.stream_audio_codec_name.empty()) {
44 stream_audio_encoder.reset(new AudioEncoder(AUDIO_OUTPUT_CODEC_NAME, DEFAULT_AUDIO_OUTPUT_BIT_RATE, oformat));
46 stream_audio_encoder.reset(new AudioEncoder(global_flags.stream_audio_codec_name, global_flags.stream_audio_codec_bitrate, oformat));
48 if (global_flags.x264_video_to_http) {
49 x264_encoder.reset(new X264Encoder(oformat));
52 string filename = generate_local_dump_filename(/*frame=*/0);
53 quicksync_encoder.reset(new QuickSyncEncoder(filename, resource_pool, surface, va_display, width, height, oformat, stream_audio_encoder.get(), x264_encoder.get()));
56 stream_audio_encoder->add_mux(stream_mux.get());
57 quicksync_encoder->set_stream_mux(stream_mux.get());
58 x264_encoder->set_mux(stream_mux.get());
61 VideoEncoder::~VideoEncoder()
63 quicksync_encoder.reset(nullptr);
64 close_output_stream();
67 void VideoEncoder::do_cut(int frame)
69 string filename = generate_local_dump_filename(frame);
70 printf("Starting new recording: %s\n", filename.c_str());
71 quicksync_encoder->shutdown();
72 quicksync_encoder.reset(new QuickSyncEncoder(filename, resource_pool, surface, va_display, width, height, oformat, stream_audio_encoder.get(), x264_encoder.get()));
73 quicksync_encoder->set_stream_mux(stream_mux.get());
76 void VideoEncoder::add_audio(int64_t pts, std::vector<float> audio)
78 quicksync_encoder->add_audio(pts, audio);
81 bool VideoEncoder::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
83 return quicksync_encoder->begin_frame(y_tex, cbcr_tex);
86 RefCountedGLsync VideoEncoder::end_frame(int64_t pts, int64_t duration, const std::vector<RefCountedFrame> &input_frames)
88 return quicksync_encoder->end_frame(pts, duration, input_frames);
91 void VideoEncoder::open_output_stream()
93 AVFormatContext *avctx = avformat_alloc_context();
94 avctx->oformat = oformat;
96 uint8_t *buf = (uint8_t *)av_malloc(MUX_BUFFER_SIZE);
97 avctx->pb = avio_alloc_context(buf, MUX_BUFFER_SIZE, 1, this, nullptr, &VideoEncoder::write_packet_thunk, nullptr);
99 Mux::Codec video_codec;
100 if (global_flags.uncompressed_video_to_http) {
101 video_codec = Mux::CODEC_NV12;
103 video_codec = Mux::CODEC_H264;
106 avctx->flags = AVFMT_FLAG_CUSTOM_IO;
108 string video_extradata;
109 if (global_flags.x264_video_to_http) {
110 video_extradata = x264_encoder->get_global_headers();
113 int time_base = global_flags.stream_coarse_timebase ? COARSE_TIMEBASE : TIMEBASE;
114 stream_mux_writing_header = true;
115 stream_mux.reset(new Mux(avctx, width, height, video_codec, video_extradata, stream_audio_encoder->get_ctx(), time_base, this));
116 stream_mux_writing_header = false;
117 httpd->set_header(stream_mux_header);
118 stream_mux_header.clear();
121 void VideoEncoder::close_output_stream()
126 int VideoEncoder::write_packet_thunk(void *opaque, uint8_t *buf, int buf_size)
128 VideoEncoder *video_encoder = (VideoEncoder *)opaque;
129 return video_encoder->write_packet(buf, buf_size);
132 int VideoEncoder::write_packet(uint8_t *buf, int buf_size)
134 if (stream_mux_writing_header) {
135 stream_mux_header.append((char *)buf, buf_size);
137 httpd->add_data((char *)buf, buf_size, stream_mux_writing_keyframes);
138 stream_mux_writing_keyframes = false;