extern "C" {
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
+#include <libavresample/avresample.h>
#include <libavutil/channel_layout.h>
#include <libavutil/frame.h>
#include <libavutil/rational.h>
#include <libavutil/samplefmt.h>
+#include <libavutil/opt.h>
}
#include <libdrm/drm_fourcc.h>
#include <stdio.h>
#include "context.h"
#include "defs.h"
+#include "flags.h"
#include "httpd.h"
+#include "mux.h"
#include "timebase.h"
+#include "x264encode.h"
using namespace std;
using namespace std;
-class H264EncoderImpl {
+// H.264 video comes out in encoding order (e.g. with two B-frames:
+// 0, 3, 1, 2, 6, 4, 5, etc.), but uncompressed video needs to
+// come in the right order. Since we do everything, including waiting
+// for the frames to come out of OpenGL, in encoding order, we need
+// a reordering buffer for uncompressed frames so that they come out
+// correctly. We go the super-lazy way of not making it understand
+// anything about the true order (which introduces some extra latency,
+// though); we know that for N B-frames we need at most (N-1) frames
+// in the reorder buffer, and can just sort on that.
+//
+// The class also deals with keeping a freelist as needed.
+class FrameReorderer {
+public:
+ FrameReorderer(unsigned queue_length, int width, int height);
+
+ // Returns the next frame to insert with its pts, if any. Otherwise -1 and nullptr.
+ // Does _not_ take ownership of data; a copy is taken if needed.
+ // The returned pointer is valid until the next call to reorder_frame, or destruction.
+ // As a special case, if queue_length == 0, will just return pts and data (no reordering needed).
+ pair<int64_t, const uint8_t *> reorder_frame(int64_t pts, const uint8_t *data);
+
+ // The same as reorder_frame, but without inserting anything. Used to empty the queue.
+ pair<int64_t, const uint8_t *> get_first_frame();
+
+ bool empty() const { return frames.empty(); }
+
+private:
+ unsigned queue_length;
+ int width, height;
+
+ priority_queue<pair<int64_t, uint8_t *>> frames;
+ stack<uint8_t *> freelist; // Includes the last value returned from reorder_frame.
+
+ // Owns all the pointers. Normally, freelist and frames could do this themselves,
+ // except priority_queue doesn't work well with movable-only types.
+ vector<unique_ptr<uint8_t[]>> owner;
+};
+
+FrameReorderer::FrameReorderer(unsigned queue_length, int width, int height)
+ : queue_length(queue_length), width(width), height(height)
+{
+ for (unsigned i = 0; i < queue_length; ++i) {
+ owner.emplace_back(new uint8_t[width * height * 2]);
+ freelist.push(owner.back().get());
+ }
+}
+
+pair<int64_t, const uint8_t *> FrameReorderer::reorder_frame(int64_t pts, const uint8_t *data)
+{
+ if (queue_length == 0) {
+ return make_pair(pts, data);
+ }
+
+ assert(!freelist.empty());
+ uint8_t *storage = freelist.top();
+ freelist.pop();
+ memcpy(storage, data, width * height * 2);
+ frames.emplace(-pts, storage); // Invert pts to get smallest first.
+
+ if (frames.size() >= queue_length) {
+ return get_first_frame();
+ } else {
+ return make_pair(-1, nullptr);
+ }
+}
+
+pair<int64_t, const uint8_t *> FrameReorderer::get_first_frame()
+{
+ assert(!frames.empty());
+ pair<int64_t, uint8_t *> storage = frames.top();
+ frames.pop();
+ int64_t pts = storage.first;
+ freelist.push(storage.second);
+ return make_pair(-pts, storage.second); // Re-invert pts (see reorder_frame()).
+}
+
+class H264EncoderImpl : public KeyFrameSignalReceiver {
public:
H264EncoderImpl(QSurface *surface, const string &va_display, int width, int height, HTTPD *httpd);
~H264EncoderImpl();
void add_audio(int64_t pts, vector<float> audio);
bool begin_frame(GLuint *y_tex, GLuint *cbcr_tex);
- void end_frame(RefCountedGLsync fence, int64_t pts, const vector<RefCountedFrame> &input_frames);
+ RefCountedGLsync end_frame(int64_t pts, const vector<RefCountedFrame> &input_frames);
void shutdown();
+ void open_output_file(const std::string &filename);
+ void close_output_file();
+
+ virtual void signal_keyframe() override {
+ stream_mux_writing_keyframes = true;
+ }
private:
struct storage_task {
int64_t pts;
};
+ // So we never get negative dts.
+ int64_t global_delay() const {
+ return int64_t(ip_period - 1) * (TIMEBASE / MAX_FPS);
+ }
+
void encode_thread_func();
void encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts);
+ void add_packet_for_uncompressed_frame(int64_t pts, const uint8_t *data);
void encode_frame(PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
int frame_type, int64_t pts, int64_t dts);
void storage_task_thread();
+ void encode_audio(const vector<float> &audio,
+ vector<float> *audio_queue,
+ int64_t audio_pts,
+ AVCodecContext *ctx,
+ AVAudioResampleContext *resampler,
+ const vector<Mux *> &muxes);
+ void encode_audio_one_frame(const float *audio,
+ size_t num_samples, // In each channel.
+ int64_t audio_pts,
+ AVCodecContext *ctx,
+ AVAudioResampleContext *resampler,
+ const vector<Mux *> &muxes);
void storage_task_enqueue(storage_task task);
void save_codeddata(storage_task task);
int render_packedsequence();
int build_packed_slice_buffer(unsigned char **header_buffer);
int init_va(const string &va_display);
int deinit_va();
+ void enable_zerocopy_if_possible();
VADisplay va_open_display(const string &va_display);
void va_close_display(VADisplay va_dpy);
int setup_encode();
int release_encode();
void update_ReferenceFrames(int frame_type);
int update_RefPicList(int frame_type);
+ void open_output_stream();
+ void close_output_stream();
+ static int write_packet_thunk(void *opaque, uint8_t *buf, int buf_size);
+ int write_packet(uint8_t *buf, int buf_size);
bool is_shutdown = false;
bool use_zerocopy;
map<int64_t, vector<float>> pending_audio_frames; // under frame_queue_mutex
QSurface *surface;
- AVCodecContext *context_audio;
+ AVCodecContext *context_audio_file;
+ AVCodecContext *context_audio_stream = nullptr; // nullptr = don't code separate audio for stream.
+
+ AVAudioResampleContext *resampler_audio_file = nullptr;
+ AVAudioResampleContext *resampler_audio_stream = nullptr;
+
+ vector<float> audio_queue_file;
+ vector<float> audio_queue_stream;
+
+ AVFrame *audio_frame = nullptr;
HTTPD *httpd;
+ unique_ptr<FrameReorderer> reorderer;
+ unique_ptr<X264Encoder> x264_encoder; // nullptr if not using x264.
Display *x11_display = nullptr;
int frame_height;
int frame_width_mbaligned;
int frame_height_mbaligned;
+
+ unique_ptr<Mux> stream_mux; // To HTTP.
+ unique_ptr<Mux> file_mux; // To local disk.
+
+ // While Mux object is constructing, <stream_mux_writing_header> is true,
+ // and the header is being collected into stream_mux_header.
+ bool stream_mux_writing_header;
+ string stream_mux_header;
+
+ bool stream_mux_writing_keyframes = false;
};
// Supposedly vaRenderPicture() is supposed to destroy the buffer implicitly,
}
}
+void H264EncoderImpl::enable_zerocopy_if_possible()
+{
+ if (global_flags.uncompressed_video_to_http) {
+ fprintf(stderr, "Disabling zerocopy H.264 encoding due to --uncompressed_video_to_http.\n");
+ use_zerocopy = false;
+ } else if (global_flags.x264_video_to_http) {
+ fprintf(stderr, "Disabling zerocopy H.264 encoding due to --x264_video_to_http.\n");
+ use_zerocopy = false;
+ } else {
+ use_zerocopy = true;
+ }
+}
+
VADisplay H264EncoderImpl::va_open_display(const string &va_display)
{
if (va_display.empty()) {
fprintf(stderr, "error: can't connect to X server!\n");
return NULL;
}
- use_zerocopy = true;
+ enable_zerocopy_if_possible();
return vaGetDisplay(x11_display);
} else if (va_display[0] != '/') {
x11_display = XOpenDisplay(va_display.c_str());
fprintf(stderr, "error: can't connect to X server!\n");
return NULL;
}
- use_zerocopy = true;
+ enable_zerocopy_if_possible();
return vaGetDisplay(x11_display);
} else {
drm_fd = open(va_display.c_str(), O_RDWR);
void H264EncoderImpl::save_codeddata(storage_task task)
{
- VACodedBufferSegment *buf_list = NULL;
- VAStatus va_status;
+ VACodedBufferSegment *buf_list = NULL;
+ VAStatus va_status;
- string data;
+ string data;
- const int64_t global_delay = int64_t(ip_period - 1) * (TIMEBASE / MAX_FPS); // So we never get negative dts.
+ va_status = vaMapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf, (void **)(&buf_list));
+ CHECK_VASTATUS(va_status, "vaMapBuffer");
+ while (buf_list != NULL) {
+ data.append(reinterpret_cast<const char *>(buf_list->buf), buf_list->size);
+ buf_list = (VACodedBufferSegment *) buf_list->next;
+ }
+ vaUnmapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf);
- va_status = vaMapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf, (void **)(&buf_list));
- CHECK_VASTATUS(va_status, "vaMapBuffer");
- while (buf_list != NULL) {
- data.append(reinterpret_cast<const char *>(buf_list->buf), buf_list->size);
- buf_list = (VACodedBufferSegment *) buf_list->next;
- }
- vaUnmapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf);
-
- {
- // Add video.
- AVPacket pkt;
- memset(&pkt, 0, sizeof(pkt));
- pkt.buf = nullptr;
- pkt.data = reinterpret_cast<uint8_t *>(&data[0]);
- pkt.size = data.size();
- pkt.stream_index = 0;
- if (task.frame_type == FRAME_IDR || task.frame_type == FRAME_I) {
- pkt.flags = AV_PKT_FLAG_KEY;
- } else {
- pkt.flags = 0;
- }
- //pkt.duration = 1;
- httpd->add_packet(pkt, task.pts + global_delay, task.dts + global_delay);
- }
- // Encode and add all audio frames up to and including the pts of this video frame.
- for ( ;; ) {
- int64_t audio_pts;
- vector<float> audio;
- {
- unique_lock<mutex> lock(frame_queue_mutex);
- frame_queue_nonempty.wait(lock, [this]{ return storage_thread_should_quit || !pending_audio_frames.empty(); });
- if (storage_thread_should_quit && pending_audio_frames.empty()) return;
- auto it = pending_audio_frames.begin();
- if (it->first > task.pts) break;
- audio_pts = it->first;
- audio = move(it->second);
- pending_audio_frames.erase(it);
- }
+ {
+ // Add video.
+ AVPacket pkt;
+ memset(&pkt, 0, sizeof(pkt));
+ pkt.buf = nullptr;
+ pkt.data = reinterpret_cast<uint8_t *>(&data[0]);
+ pkt.size = data.size();
+ pkt.stream_index = 0;
+ if (task.frame_type == FRAME_IDR) {
+ pkt.flags = AV_PKT_FLAG_KEY;
+ } else {
+ pkt.flags = 0;
+ }
+ //pkt.duration = 1;
+ if (file_mux) {
+ file_mux->add_packet(pkt, task.pts + global_delay(), task.dts + global_delay());
+ }
+ if (!global_flags.uncompressed_video_to_http &&
+ !global_flags.x264_video_to_http) {
+ stream_mux->add_packet(pkt, task.pts + global_delay(), task.dts + global_delay());
+ }
+ }
+ // Encode and add all audio frames up to and including the pts of this video frame.
+ for ( ;; ) {
+ int64_t audio_pts;
+ vector<float> audio;
+ {
+ unique_lock<mutex> lock(frame_queue_mutex);
+ frame_queue_nonempty.wait(lock, [this]{ return storage_thread_should_quit || !pending_audio_frames.empty(); });
+ if (storage_thread_should_quit && pending_audio_frames.empty()) return;
+ auto it = pending_audio_frames.begin();
+ if (it->first > task.pts) break;
+ audio_pts = it->first;
+ audio = move(it->second);
+ pending_audio_frames.erase(it);
+ }
- AVFrame *frame = av_frame_alloc();
- frame->nb_samples = audio.size() / 2;
- frame->format = AV_SAMPLE_FMT_S32;
- frame->channel_layout = AV_CH_LAYOUT_STEREO;
+ if (context_audio_stream) {
+ encode_audio(audio, &audio_queue_file, audio_pts, context_audio_file, resampler_audio_file, { file_mux.get() });
+ encode_audio(audio, &audio_queue_stream, audio_pts, context_audio_stream, resampler_audio_stream, { stream_mux.get() });
+ } else {
+ encode_audio(audio, &audio_queue_file, audio_pts, context_audio_file, resampler_audio_file, { stream_mux.get(), file_mux.get() });
+ }
- unique_ptr<int32_t[]> int_samples(new int32_t[audio.size()]);
- int ret = avcodec_fill_audio_frame(frame, 2, AV_SAMPLE_FMT_S32, (const uint8_t*)int_samples.get(), audio.size() * sizeof(int32_t), 1);
- if (ret < 0) {
- fprintf(stderr, "avcodec_fill_audio_frame() failed with %d\n", ret);
- exit(1);
- }
- for (int i = 0; i < frame->nb_samples * 2; ++i) {
- if (audio[i] >= 1.0f) {
- int_samples[i] = 2147483647;
- } else if (audio[i] <= -1.0f) {
- int_samples[i] = -2147483647;
- } else {
- int_samples[i] = lrintf(audio[i] * 2147483647.0f);
- }
- }
+ if (audio_pts == task.pts) break;
+ }
+}
- AVPacket pkt;
- av_init_packet(&pkt);
- pkt.data = nullptr;
- pkt.size = 0;
- int got_output;
- avcodec_encode_audio2(context_audio, &pkt, frame, &got_output);
- if (got_output) {
- pkt.stream_index = 1;
- httpd->add_packet(pkt, audio_pts + global_delay, audio_pts + global_delay);
- }
- // TODO: Delayed frames.
- av_frame_unref(frame);
- av_free_packet(&pkt);
- if (audio_pts == task.pts) break;
- }
+void H264EncoderImpl::encode_audio(
+ const vector<float> &audio,
+ vector<float> *audio_queue,
+ int64_t audio_pts,
+ AVCodecContext *ctx,
+ AVAudioResampleContext *resampler,
+ const vector<Mux *> &muxes)
+{
+ if (ctx->frame_size == 0) {
+ // No queueing needed.
+ assert(audio_queue->empty());
+ assert(audio.size() % 2 == 0);
+ encode_audio_one_frame(&audio[0], audio.size() / 2, audio_pts, ctx, resampler, muxes);
+ return;
+ }
-#if 0
- printf("\r "); /* return back to startpoint */
- switch (encode_order % 4) {
- case 0:
- printf("|");
- break;
- case 1:
- printf("/");
- break;
- case 2:
- printf("-");
- break;
- case 3:
- printf("\\");
- break;
- }
- printf("%08lld", encode_order);
-#endif
+ int64_t sample_offset = audio_queue->size();
+
+ audio_queue->insert(audio_queue->end(), audio.begin(), audio.end());
+ size_t sample_num;
+ for (sample_num = 0;
+ sample_num + ctx->frame_size * 2 <= audio_queue->size();
+ sample_num += ctx->frame_size * 2) {
+ int64_t adjusted_audio_pts = audio_pts + (int64_t(sample_num) - sample_offset) * TIMEBASE / (OUTPUT_FREQUENCY * 2);
+ encode_audio_one_frame(&(*audio_queue)[sample_num],
+ ctx->frame_size,
+ adjusted_audio_pts,
+ ctx,
+ resampler,
+ muxes);
+ }
+ audio_queue->erase(audio_queue->begin(), audio_queue->begin() + sample_num);
}
+void H264EncoderImpl::encode_audio_one_frame(
+ const float *audio,
+ size_t num_samples,
+ int64_t audio_pts,
+ AVCodecContext *ctx,
+ AVAudioResampleContext *resampler,
+ const vector<Mux *> &muxes)
+{
+ audio_frame->nb_samples = num_samples;
+ audio_frame->channel_layout = AV_CH_LAYOUT_STEREO;
+ audio_frame->format = ctx->sample_fmt;
+ audio_frame->sample_rate = OUTPUT_FREQUENCY;
+
+ if (av_samples_alloc(audio_frame->data, nullptr, 2, num_samples, ctx->sample_fmt, 0) < 0) {
+ fprintf(stderr, "Could not allocate %ld samples.\n", num_samples);
+ exit(1);
+ }
+
+ if (avresample_convert(resampler, audio_frame->data, 0, num_samples,
+ (uint8_t **)&audio, 0, num_samples) < 0) {
+ fprintf(stderr, "Audio conversion failed.\n");
+ exit(1);
+ }
+
+ AVPacket pkt;
+ av_init_packet(&pkt);
+ pkt.data = nullptr;
+ pkt.size = 0;
+ int got_output = 0;
+ avcodec_encode_audio2(ctx, &pkt, audio_frame, &got_output);
+ if (got_output) {
+ pkt.stream_index = 1;
+ pkt.flags = 0;
+ for (Mux *mux : muxes) {
+ mux->add_packet(pkt, audio_pts + global_delay(), audio_pts + global_delay());
+ }
+ }
+
+ av_freep(&audio_frame->data[0]);
+
+ // TODO: Delayed frames.
+ av_frame_unref(audio_frame);
+ av_free_packet(&pkt);
+}
// this is weird. but it seems to put a new frame onto the queue
void H264EncoderImpl::storage_task_enqueue(storage_task task)
{
unique_lock<mutex> lock(storage_task_queue_mutex);
storage_task_queue.push(move(task));
- srcsurface_status[task.display_order % SURFACE_NUM] = SRC_SURFACE_IN_ENCODING;
storage_task_queue_changed.notify_all();
}
return 0;
}
+namespace {
-H264EncoderImpl::H264EncoderImpl(QSurface *surface, const string &va_display, int width, int height, HTTPD *httpd)
- : current_storage_frame(0), surface(surface), httpd(httpd)
+void init_audio_encoder(const string &codec_name, int bit_rate, AVCodecContext **ctx, AVAudioResampleContext **resampler)
{
- AVCodec *codec_audio = avcodec_find_encoder(AUDIO_OUTPUT_CODEC);
- context_audio = avcodec_alloc_context3(codec_audio);
- context_audio->bit_rate = AUDIO_OUTPUT_BIT_RATE;
+ AVCodec *codec_audio = avcodec_find_encoder_by_name(codec_name.c_str());
+ if (codec_audio == nullptr) {
+ fprintf(stderr, "ERROR: Could not find codec '%s'\n", codec_name.c_str());
+ exit(1);
+ }
+
+ AVCodecContext *context_audio = avcodec_alloc_context3(codec_audio);
+ context_audio->bit_rate = bit_rate;
context_audio->sample_rate = OUTPUT_FREQUENCY;
- context_audio->sample_fmt = AUDIO_OUTPUT_SAMPLE_FMT;
+ context_audio->sample_fmt = codec_audio->sample_fmts[0];
context_audio->channels = 2;
context_audio->channel_layout = AV_CH_LAYOUT_STEREO;
context_audio->time_base = AVRational{1, TIMEBASE};
+ context_audio->flags |= CODEC_FLAG_GLOBAL_HEADER;
if (avcodec_open2(context_audio, codec_audio, NULL) < 0) {
- fprintf(stderr, "Could not open codec\n");
+ fprintf(stderr, "Could not open codec '%s'\n", codec_name.c_str());
+ exit(1);
+ }
+
+ *ctx = context_audio;
+
+ *resampler = avresample_alloc_context();
+ if (*resampler == nullptr) {
+ fprintf(stderr, "Allocating resampler failed.\n");
+ exit(1);
+ }
+
+ av_opt_set_int(*resampler, "in_channel_layout", AV_CH_LAYOUT_STEREO, 0);
+ av_opt_set_int(*resampler, "out_channel_layout", AV_CH_LAYOUT_STEREO, 0);
+ av_opt_set_int(*resampler, "in_sample_rate", OUTPUT_FREQUENCY, 0);
+ av_opt_set_int(*resampler, "out_sample_rate", OUTPUT_FREQUENCY, 0);
+ av_opt_set_int(*resampler, "in_sample_fmt", AV_SAMPLE_FMT_FLT, 0);
+ av_opt_set_int(*resampler, "out_sample_fmt", context_audio->sample_fmt, 0);
+
+ if (avresample_open(*resampler) < 0) {
+ fprintf(stderr, "Could not open resample context.\n");
exit(1);
}
+}
+
+} // namespace
+
+H264EncoderImpl::H264EncoderImpl(QSurface *surface, const string &va_display, int width, int height, HTTPD *httpd)
+ : current_storage_frame(0), surface(surface), httpd(httpd), frame_width(width), frame_height(height)
+{
+ init_audio_encoder(AUDIO_OUTPUT_CODEC_NAME, DEFAULT_AUDIO_OUTPUT_BIT_RATE, &context_audio_file, &resampler_audio_file);
+
+ if (!global_flags.stream_audio_codec_name.empty()) {
+ init_audio_encoder(global_flags.stream_audio_codec_name,
+ global_flags.stream_audio_codec_bitrate, &context_audio_stream, &resampler_audio_stream);
+ }
- frame_width = width;
- frame_height = height;
frame_width_mbaligned = (frame_width + 15) & (~15);
frame_height_mbaligned = (frame_height + 15) & (~15);
+ open_output_stream();
+
+ audio_frame = av_frame_alloc();
+
//print_input();
+ if (global_flags.uncompressed_video_to_http ||
+ global_flags.x264_video_to_http) {
+ reorderer.reset(new FrameReorderer(ip_period - 1, frame_width, frame_height));
+ }
+ if (global_flags.x264_video_to_http) {
+ x264_encoder.reset(new X264Encoder(stream_mux.get()));
+ }
+
init_va(va_display);
setup_encode();
H264EncoderImpl::~H264EncoderImpl()
{
shutdown();
+ av_frame_free(&audio_frame);
+ avresample_free(&resampler_audio_file);
+ avresample_free(&resampler_audio_stream);
+ avcodec_free_context(&context_audio_file);
+ avcodec_free_context(&context_audio_stream);
+ close_output_stream();
}
bool H264EncoderImpl::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
current_storage_frame % SURFACE_NUM, current_storage_frame);
}
storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || (srcsurface_status[current_storage_frame % SURFACE_NUM] == SRC_SURFACE_FREE); });
+ srcsurface_status[current_storage_frame % SURFACE_NUM] = SRC_SURFACE_IN_ENCODING;
if (storage_thread_should_quit) return false;
}
frame_queue_nonempty.notify_all();
}
-void H264EncoderImpl::end_frame(RefCountedGLsync fence, int64_t pts, const vector<RefCountedFrame> &input_frames)
+RefCountedGLsync H264EncoderImpl::end_frame(int64_t pts, const vector<RefCountedFrame> &input_frames)
{
assert(!is_shutdown);
glMemoryBarrier(GL_TEXTURE_UPDATE_BARRIER_BIT | GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT);
check_error();
- fence = RefCountedGLsync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
- check_error();
}
+ RefCountedGLsync fence = RefCountedGLsync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
+ check_error();
+ glFlush(); // Make the H.264 thread see the fence as soon as possible.
+ check_error();
+
{
unique_lock<mutex> lock(frame_queue_mutex);
pending_video_frames[current_storage_frame] = PendingFrame{ fence, input_frames, pts };
++current_storage_frame;
}
frame_queue_nonempty.notify_all();
+ return fence;
}
void H264EncoderImpl::shutdown()
is_shutdown = true;
}
+void H264EncoderImpl::open_output_file(const std::string &filename)
+{
+ AVFormatContext *avctx = avformat_alloc_context();
+ avctx->oformat = av_guess_format(NULL, filename.c_str(), NULL);
+ assert(filename.size() < sizeof(avctx->filename) - 1);
+ strcpy(avctx->filename, filename.c_str());
+
+ string url = "file:" + filename;
+ int ret = avio_open2(&avctx->pb, url.c_str(), AVIO_FLAG_WRITE, &avctx->interrupt_callback, NULL);
+ if (ret < 0) {
+ char tmp[AV_ERROR_MAX_STRING_SIZE];
+ fprintf(stderr, "%s: avio_open2() failed: %s\n", filename.c_str(), av_make_error_string(tmp, sizeof(tmp), ret));
+ exit(1);
+ }
+
+ file_mux.reset(new Mux(avctx, frame_width, frame_height, Mux::CODEC_H264, context_audio_file->codec, TIMEBASE, DEFAULT_AUDIO_OUTPUT_BIT_RATE, nullptr));
+}
+
+void H264EncoderImpl::close_output_file()
+{
+ file_mux.reset();
+}
+
+void H264EncoderImpl::open_output_stream()
+{
+ AVFormatContext *avctx = avformat_alloc_context();
+ AVOutputFormat *oformat = av_guess_format(global_flags.stream_mux_name.c_str(), nullptr, nullptr);
+ assert(oformat != nullptr);
+ avctx->oformat = oformat;
+
+ string codec_name;
+ int bit_rate;
+
+ if (global_flags.stream_audio_codec_name.empty()) {
+ codec_name = AUDIO_OUTPUT_CODEC_NAME;
+ bit_rate = DEFAULT_AUDIO_OUTPUT_BIT_RATE;
+ } else {
+ codec_name = global_flags.stream_audio_codec_name;
+ bit_rate = global_flags.stream_audio_codec_bitrate;
+ }
+
+ uint8_t *buf = (uint8_t *)av_malloc(MUX_BUFFER_SIZE);
+ avctx->pb = avio_alloc_context(buf, MUX_BUFFER_SIZE, 1, this, nullptr, &H264EncoderImpl::write_packet_thunk, nullptr);
+
+ Mux::Codec video_codec;
+ if (global_flags.uncompressed_video_to_http) {
+ video_codec = Mux::CODEC_NV12;
+ } else {
+ video_codec = Mux::CODEC_H264;
+ }
+
+ avctx->flags = AVFMT_FLAG_CUSTOM_IO;
+ AVCodec *codec_audio = avcodec_find_encoder_by_name(codec_name.c_str());
+ if (codec_audio == nullptr) {
+ fprintf(stderr, "ERROR: Could not find codec '%s'\n", codec_name.c_str());
+ exit(1);
+ }
+
+ int time_base = global_flags.stream_coarse_timebase ? COARSE_TIMEBASE : TIMEBASE;
+ stream_mux_writing_header = true;
+ stream_mux.reset(new Mux(avctx, frame_width, frame_height, video_codec, codec_audio, time_base, bit_rate, this));
+ stream_mux_writing_header = false;
+ httpd->set_header(stream_mux_header);
+ stream_mux_header.clear();
+}
+
+void H264EncoderImpl::close_output_stream()
+{
+ stream_mux.reset();
+}
+
+int H264EncoderImpl::write_packet_thunk(void *opaque, uint8_t *buf, int buf_size)
+{
+ H264EncoderImpl *h264_encoder = (H264EncoderImpl *)opaque;
+ return h264_encoder->write_packet(buf, buf_size);
+}
+
+int H264EncoderImpl::write_packet(uint8_t *buf, int buf_size)
+{
+ if (stream_mux_writing_header) {
+ stream_mux_header.append((char *)buf, buf_size);
+ } else {
+ httpd->add_data((char *)buf, buf_size, stream_mux_writing_keyframes);
+ stream_mux_writing_keyframes = false;
+ }
+ return buf_size;
+}
+
void H264EncoderImpl::encode_thread_func()
{
int64_t last_dts = -1;
encode_frame(frame, encoding_frame_num++, display_frame_num, gop_start_display_frame_num, FRAME_P, frame.pts, dts);
last_dts = dts;
}
+
+ if (global_flags.uncompressed_video_to_http ||
+ global_flags.x264_video_to_http) {
+ // Add frames left in reorderer.
+ while (!reorderer->empty()) {
+ pair<int64_t, const uint8_t *> output_frame = reorderer->get_first_frame();
+ if (global_flags.uncompressed_video_to_http) {
+ add_packet_for_uncompressed_frame(output_frame.first, output_frame.second);
+ } else {
+ assert(global_flags.x264_video_to_http);
+ x264_encoder->add_frame(output_frame.first, output_frame.second);
+ }
+ }
+ }
+}
+
+void H264EncoderImpl::add_packet_for_uncompressed_frame(int64_t pts, const uint8_t *data)
+{
+ AVPacket pkt;
+ memset(&pkt, 0, sizeof(pkt));
+ pkt.buf = nullptr;
+ pkt.data = const_cast<uint8_t *>(data);
+ pkt.size = frame_width * frame_height * 2;
+ pkt.stream_index = 0;
+ pkt.flags = AV_PKT_FLAG_KEY;
+ stream_mux->add_packet(pkt, pts, pts);
}
namespace {
va_status = vaUnmapBuffer(va_dpy, surf->surface_image.buf);
CHECK_VASTATUS(va_status, "vaUnmapBuffer");
+
+ if (global_flags.uncompressed_video_to_http ||
+ global_flags.x264_video_to_http) {
+ // Add uncompressed video. (Note that pts == dts here.)
+ // Delay needs to match audio.
+ pair<int64_t, const uint8_t *> output_frame = reorderer->reorder_frame(pts + global_delay(), reinterpret_cast<uint8_t *>(surf->y_ptr));
+ if (output_frame.second != nullptr) {
+ if (global_flags.uncompressed_video_to_http) {
+ add_packet_for_uncompressed_frame(output_frame.first, output_frame.second);
+ } else {
+ assert(global_flags.x264_video_to_http);
+ x264_encoder->add_frame(output_frame.first, output_frame.second);
+ }
+ }
+ }
}
va_status = vaDestroyImage(va_dpy, surf->surface_image.image_id);
return impl->begin_frame(y_tex, cbcr_tex);
}
-void H264Encoder::end_frame(RefCountedGLsync fence, int64_t pts, const vector<RefCountedFrame> &input_frames)
+RefCountedGLsync H264Encoder::end_frame(int64_t pts, const vector<RefCountedFrame> &input_frames)
{
- impl->end_frame(fence, pts, input_frames);
+ return impl->end_frame(pts, input_frames);
}
void H264Encoder::shutdown()
impl->shutdown();
}
-// Real class.
+void H264Encoder::open_output_file(const std::string &filename)
+{
+ impl->open_output_file(filename);
+}
+
+void H264Encoder::close_output_file()
+{
+ impl->close_output_file();
+}
projects / nageru / blobdiff