X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=video_stream.cpp;h=a9ed0610e4518729e9aaa9614bb98ab0083d33ce;hb=bdef311c334b674ba39a931805fb7d32ce8698da;hp=bc8cada93e9f999729e77d26ab8d317c77207613;hpb=5c3d31147e398494e8ea8be386f7d533b2b3baaa;p=nageru diff --git a/video_stream.cpp b/video_stream.cpp index bc8cada..a9ed061 100644 --- a/video_stream.cpp +++ b/video_stream.cpp @@ -26,29 +26,6 @@ using namespace std::chrono; extern HTTPD *global_httpd; -namespace { - -string read_file(const string &filename) -{ - FILE *fp = fopen(filename.c_str(), "rb"); - if (fp == nullptr) { - perror(filename.c_str()); - return ""; - } - - fseek(fp, 0, SEEK_END); - long len = ftell(fp); - rewind(fp); - - string ret; - ret.resize(len); - fread(&ret[0], len, 1, fp); - fclose(fp); - return ret; -} - -} // namespace - struct VectorDestinationManager { jpeg_destination_mgr pub; std::vector dest; @@ -181,45 +158,46 @@ VideoStream::VideoStream() glTextureStorage2D(cr_tex[i], 1, GL_R8, width / 2, height); check_error(); - InterpolatedFrameResources resource; - resource.input_tex = input_tex[i]; - resource.gray_tex = gray_tex[i]; - resource.fade_y_output_tex = fade_y_output_tex[i]; - resource.fade_cbcr_output_tex = fade_cbcr_output_tex[i]; - resource.cb_tex = cb_tex[i]; - resource.cr_tex = cr_tex[i]; - glCreateFramebuffers(2, resource.input_fbos); + unique_ptr resource(new InterpolatedFrameResources); + resource->owner = this; + resource->input_tex = input_tex[i]; + resource->gray_tex = gray_tex[i]; + resource->fade_y_output_tex = fade_y_output_tex[i]; + resource->fade_cbcr_output_tex = fade_cbcr_output_tex[i]; + resource->cb_tex = cb_tex[i]; + resource->cr_tex = cr_tex[i]; + glCreateFramebuffers(2, resource->input_fbos); check_error(); - glCreateFramebuffers(1, &resource.fade_fbo); + glCreateFramebuffers(1, &resource->fade_fbo); check_error(); - glNamedFramebufferTextureLayer(resource.input_fbos[0], GL_COLOR_ATTACHMENT0, input_tex[i], 0, 0); + glNamedFramebufferTextureLayer(resource->input_fbos[0], GL_COLOR_ATTACHMENT0, input_tex[i], 0, 0); check_error(); - glNamedFramebufferTextureLayer(resource.input_fbos[0], GL_COLOR_ATTACHMENT1, gray_tex[i], 0, 0); + glNamedFramebufferTextureLayer(resource->input_fbos[0], GL_COLOR_ATTACHMENT1, gray_tex[i], 0, 0); check_error(); - glNamedFramebufferTextureLayer(resource.input_fbos[1], GL_COLOR_ATTACHMENT0, input_tex[i], 0, 1); + glNamedFramebufferTextureLayer(resource->input_fbos[1], GL_COLOR_ATTACHMENT0, input_tex[i], 0, 1); check_error(); - glNamedFramebufferTextureLayer(resource.input_fbos[1], GL_COLOR_ATTACHMENT1, gray_tex[i], 0, 1); + glNamedFramebufferTextureLayer(resource->input_fbos[1], GL_COLOR_ATTACHMENT1, gray_tex[i], 0, 1); check_error(); - glNamedFramebufferTexture(resource.fade_fbo, GL_COLOR_ATTACHMENT0, fade_y_output_tex[i], 0); + glNamedFramebufferTexture(resource->fade_fbo, GL_COLOR_ATTACHMENT0, fade_y_output_tex[i], 0); check_error(); - glNamedFramebufferTexture(resource.fade_fbo, GL_COLOR_ATTACHMENT1, fade_cbcr_output_tex[i], 0); + glNamedFramebufferTexture(resource->fade_fbo, GL_COLOR_ATTACHMENT1, fade_cbcr_output_tex[i], 0); check_error(); GLuint bufs[] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1 }; - glNamedFramebufferDrawBuffers(resource.input_fbos[0], 2, bufs); + glNamedFramebufferDrawBuffers(resource->input_fbos[0], 2, bufs); check_error(); - glNamedFramebufferDrawBuffers(resource.input_fbos[1], 2, bufs); + glNamedFramebufferDrawBuffers(resource->input_fbos[1], 2, bufs); check_error(); - glNamedFramebufferDrawBuffers(resource.fade_fbo, 2, bufs); + glNamedFramebufferDrawBuffers(resource->fade_fbo, 2, bufs); check_error(); - glCreateBuffers(1, &resource.pbo); + glCreateBuffers(1, &resource->pbo); check_error(); - glNamedBufferStorage(resource.pbo, width * height * 4, nullptr, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT); + glNamedBufferStorage(resource->pbo, width * height * 4, nullptr, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT); check_error(); - resource.pbo_contents = glMapNamedBufferRange(resource.pbo, 0, width * height * 4, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT); - interpolate_resources.push_back(resource); + resource->pbo_contents = glMapNamedBufferRange(resource->pbo, 0, width * height * 4, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT); + interpolate_resources.push_back(move(resource)); } check_error(); @@ -284,27 +262,45 @@ void VideoStream::stop() void VideoStream::clear_queue() { - unique_lock lock(queue_lock); - frame_queue.clear(); + deque q; + + { + unique_lock lock(queue_lock); + q = move(frame_queue); + } + + // These are not RAII-ed, unfortunately, so we'll need to clean them ourselves. + // Note that release_texture() is thread-safe. + for (const QueuedFrame &qf : q) { + if (qf.type == QueuedFrame::INTERPOLATED || + qf.type == QueuedFrame::FADED_INTERPOLATED) { + compute_flow->release_texture(qf.flow_tex); + } + if (qf.type == QueuedFrame::INTERPOLATED) { + interpolate->release_texture(qf.output_tex); + interpolate->release_texture(qf.cbcr_tex); + } + } + + // Destroy q outside the mutex, as that would be a double-lock. } void VideoStream::schedule_original_frame(steady_clock::time_point local_pts, int64_t output_pts, function &&display_func, QueueSpotHolder &&queue_spot_holder, - unsigned stream_idx, int64_t input_pts) + FrameOnDisk frame) { - fprintf(stderr, "output_pts=%ld original input_pts=%ld\n", output_pts, input_pts); + fprintf(stderr, "output_pts=%ld original input_pts=%ld\n", output_pts, frame.pts); // Preload the file from disk, so that the encoder thread does not get stalled. // TODO: Consider sending it through the queue instead. - (void)read_file(filename_for_frame(stream_idx, input_pts)); + (void)read_frame(frame); QueuedFrame qf; qf.local_pts = local_pts; qf.type = QueuedFrame::ORIGINAL; qf.output_pts = output_pts; - qf.stream_idx = stream_idx; - qf.input_first_pts = input_pts; + qf.frame1 = frame; qf.display_func = move(display_func); qf.queue_spot_holder = move(queue_spot_holder); @@ -316,67 +312,55 @@ void VideoStream::schedule_original_frame(steady_clock::time_point local_pts, void VideoStream::schedule_faded_frame(steady_clock::time_point local_pts, int64_t output_pts, function &&display_func, QueueSpotHolder &&queue_spot_holder, - unsigned stream_idx, int64_t input_pts, int secondary_stream_idx, - int64_t secondary_input_pts, float fade_alpha) + FrameOnDisk frame1_spec, FrameOnDisk frame2_spec, + float fade_alpha) { - fprintf(stderr, "output_pts=%ld faded input_pts=%ld,%ld fade_alpha=%.2f\n", output_pts, input_pts, secondary_input_pts, fade_alpha); + fprintf(stderr, "output_pts=%ld faded input_pts=%ld,%ld fade_alpha=%.2f\n", output_pts, frame1_spec.pts, frame2_spec.pts, fade_alpha); // Get the temporary OpenGL resources we need for doing the fade. // (We share these with interpolated frames, which is slightly // overkill, but there's no need to waste resources on keeping // separate pools around.) - InterpolatedFrameResources resources; + BorrowedInterpolatedFrameResources resources; { unique_lock lock(queue_lock); if (interpolate_resources.empty()) { fprintf(stderr, "WARNING: Too many interpolated frames already in transit; dropping one.\n"); return; } - resources = interpolate_resources.front(); + resources = BorrowedInterpolatedFrameResources(interpolate_resources.front().release()); interpolate_resources.pop_front(); } bool did_decode; - JPEGID jpeg_id1; - jpeg_id1.stream_idx = stream_idx; - jpeg_id1.pts = input_pts; - jpeg_id1.interpolated = false; - shared_ptr frame1 = decode_jpeg_with_cache(jpeg_id1, DECODE_IF_NOT_IN_CACHE, &did_decode); + shared_ptr frame1 = decode_jpeg_with_cache(frame1_spec, DECODE_IF_NOT_IN_CACHE, &did_decode); + shared_ptr frame2 = decode_jpeg_with_cache(frame2_spec, DECODE_IF_NOT_IN_CACHE, &did_decode); - JPEGID jpeg_id2; - jpeg_id2.stream_idx = secondary_stream_idx; - jpeg_id2.pts = secondary_input_pts; - jpeg_id2.interpolated = false; - shared_ptr frame2 = decode_jpeg_with_cache(jpeg_id2, DECODE_IF_NOT_IN_CACHE, &did_decode); - - ycbcr_semiplanar_converter->prepare_chain_for_fade(frame1, frame2, fade_alpha)->render_to_fbo(resources.fade_fbo, 1280, 720); + ycbcr_semiplanar_converter->prepare_chain_for_fade(frame1, frame2, fade_alpha)->render_to_fbo(resources->fade_fbo, 1280, 720); QueuedFrame qf; qf.local_pts = local_pts; qf.type = QueuedFrame::FADED; qf.output_pts = output_pts; - qf.stream_idx = stream_idx; - qf.resources = resources; - qf.input_first_pts = input_pts; + qf.frame1 = frame1_spec; qf.display_func = move(display_func); qf.queue_spot_holder = move(queue_spot_holder); - qf.secondary_stream_idx = secondary_stream_idx; - qf.secondary_input_pts = secondary_input_pts; + qf.secondary_frame = frame2_spec; // Subsample and split Cb/Cr. - chroma_subsampler->subsample_chroma(resources.fade_cbcr_output_tex, 1280, 720, resources.cb_tex, resources.cr_tex); + chroma_subsampler->subsample_chroma(resources->fade_cbcr_output_tex, 1280, 720, resources->cb_tex, resources->cr_tex); // Read it down (asynchronously) to the CPU. glPixelStorei(GL_PACK_ROW_LENGTH, 0); - glBindBuffer(GL_PIXEL_PACK_BUFFER, resources.pbo); + glBindBuffer(GL_PIXEL_PACK_BUFFER, resources->pbo); check_error(); - glGetTextureImage(resources.fade_y_output_tex, 0, GL_RED, GL_UNSIGNED_BYTE, 1280 * 720 * 4, BUFFER_OFFSET(0)); + glGetTextureImage(resources->fade_y_output_tex, 0, GL_RED, GL_UNSIGNED_BYTE, 1280 * 720 * 4, BUFFER_OFFSET(0)); check_error(); - glGetTextureImage(resources.cb_tex, 0, GL_RED, GL_UNSIGNED_BYTE, 1280 * 720 * 3, BUFFER_OFFSET(1280 * 720)); + glGetTextureImage(resources->cb_tex, 0, GL_RED, GL_UNSIGNED_BYTE, 1280 * 720 * 3, BUFFER_OFFSET(1280 * 720)); check_error(); - glGetTextureImage(resources.cr_tex, 0, GL_RED, GL_UNSIGNED_BYTE, 1280 * 720 * 3 - 640 * 720, BUFFER_OFFSET(1280 * 720 + 640 * 720)); + glGetTextureImage(resources->cr_tex, 0, GL_RED, GL_UNSIGNED_BYTE, 1280 * 720 * 3 - 640 * 720, BUFFER_OFFSET(1280 * 720 + 640 * 720)); check_error(); glBindBuffer(GL_PIXEL_PACK_BUFFER, 0); @@ -385,6 +369,8 @@ void VideoStream::schedule_faded_frame(steady_clock::time_point local_pts, int64 check_error(); qf.fence = RefCountedGLsync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0); check_error(); + qf.resources = move(resources); + qf.local_pts = local_pts; unique_lock lock(queue_lock); frame_queue.push_back(move(qf)); @@ -392,95 +378,77 @@ void VideoStream::schedule_faded_frame(steady_clock::time_point local_pts, int64 } void VideoStream::schedule_interpolated_frame(steady_clock::time_point local_pts, - int64_t output_pts, function &&display_func, + int64_t output_pts, function)> &&display_func, QueueSpotHolder &&queue_spot_holder, - unsigned stream_idx, int64_t input_first_pts, - int64_t input_second_pts, float alpha, - int secondary_stream_idx, int64_t secondary_input_pts, - float fade_alpha) + FrameOnDisk frame1, FrameOnDisk frame2, + float alpha, FrameOnDisk secondary_frame, float fade_alpha) { - if (secondary_stream_idx != -1) { - fprintf(stderr, "output_pts=%ld interpolated input_pts1=%ld input_pts2=%ld alpha=%.3f secondary_pts=%ld fade_alpha=%.2f\n", output_pts, input_first_pts, input_second_pts, alpha, secondary_input_pts, fade_alpha); - } else { - fprintf(stderr, "output_pts=%ld interpolated input_pts1=%ld input_pts2=%ld alpha=%.3f\n", output_pts, input_first_pts, input_second_pts, alpha); - } - - JPEGID id; - if (secondary_stream_idx == -1) { - id = JPEGID{ stream_idx, output_pts, /*interpolated=*/true }; + if (secondary_frame.pts != -1) { + fprintf(stderr, "output_pts=%ld interpolated input_pts1=%ld input_pts2=%ld alpha=%.3f secondary_pts=%ld fade_alpha=%.2f\n", output_pts, frame1.pts, frame2.pts, alpha, secondary_frame.pts, fade_alpha); } else { - id = create_jpegid_for_interpolated_fade(stream_idx, output_pts, secondary_stream_idx, secondary_input_pts); + fprintf(stderr, "output_pts=%ld interpolated input_pts1=%ld input_pts2=%ld alpha=%.3f\n", output_pts, frame1.pts, frame2.pts, alpha); } // Get the temporary OpenGL resources we need for doing the interpolation. - InterpolatedFrameResources resources; + BorrowedInterpolatedFrameResources resources; { unique_lock lock(queue_lock); if (interpolate_resources.empty()) { fprintf(stderr, "WARNING: Too many interpolated frames already in transit; dropping one.\n"); return; } - resources = interpolate_resources.front(); + resources = BorrowedInterpolatedFrameResources(interpolate_resources.front().release()); interpolate_resources.pop_front(); } QueuedFrame qf; - qf.type = (secondary_stream_idx == -1) ? QueuedFrame::INTERPOLATED : QueuedFrame::FADED_INTERPOLATED; + qf.type = (secondary_frame.pts == -1) ? QueuedFrame::INTERPOLATED : QueuedFrame::FADED_INTERPOLATED; qf.output_pts = output_pts; - qf.stream_idx = stream_idx; - qf.resources = resources; - qf.id = id; - qf.display_func = move(display_func); + qf.display_decoded_func = move(display_func); qf.queue_spot_holder = move(queue_spot_holder); + qf.local_pts = local_pts; check_error(); // Convert frame0 and frame1 to OpenGL textures. for (size_t frame_no = 0; frame_no < 2; ++frame_no) { - JPEGID jpeg_id; - jpeg_id.stream_idx = stream_idx; - jpeg_id.pts = frame_no == 1 ? input_second_pts : input_first_pts; - jpeg_id.interpolated = false; + FrameOnDisk frame_spec = frame_no == 1 ? frame2 : frame1; bool did_decode; - shared_ptr frame = decode_jpeg_with_cache(jpeg_id, DECODE_IF_NOT_IN_CACHE, &did_decode); - ycbcr_converter->prepare_chain_for_conversion(frame)->render_to_fbo(resources.input_fbos[frame_no], 1280, 720); + shared_ptr frame = decode_jpeg_with_cache(frame_spec, DECODE_IF_NOT_IN_CACHE, &did_decode); + ycbcr_converter->prepare_chain_for_conversion(frame)->render_to_fbo(resources->input_fbos[frame_no], 1280, 720); } - glGenerateTextureMipmap(resources.input_tex); + glGenerateTextureMipmap(resources->input_tex); check_error(); - glGenerateTextureMipmap(resources.gray_tex); + glGenerateTextureMipmap(resources->gray_tex); check_error(); // Compute the interpolated frame. - qf.flow_tex = compute_flow->exec(resources.gray_tex, DISComputeFlow::FORWARD_AND_BACKWARD, DISComputeFlow::DO_NOT_RESIZE_FLOW); + qf.flow_tex = compute_flow->exec(resources->gray_tex, DISComputeFlow::FORWARD_AND_BACKWARD, DISComputeFlow::DO_NOT_RESIZE_FLOW); check_error(); - if (secondary_stream_idx != -1) { + if (secondary_frame.pts != -1) { // Fade. First kick off the interpolation. - tie(qf.output_tex, ignore) = interpolate_no_split->exec(resources.input_tex, resources.gray_tex, qf.flow_tex, 1280, 720, alpha); + tie(qf.output_tex, ignore) = interpolate_no_split->exec(resources->input_tex, resources->gray_tex, qf.flow_tex, 1280, 720, alpha); check_error(); // Now decode the image we are fading against. - JPEGID jpeg_id; - jpeg_id.stream_idx = secondary_stream_idx; - jpeg_id.pts = secondary_input_pts; - jpeg_id.interpolated = false; bool did_decode; - shared_ptr frame2 = decode_jpeg_with_cache(jpeg_id, DECODE_IF_NOT_IN_CACHE, &did_decode); + shared_ptr frame2 = decode_jpeg_with_cache(secondary_frame, DECODE_IF_NOT_IN_CACHE, &did_decode); // Then fade against it, putting it into the fade Y' and CbCr textures. - ycbcr_semiplanar_converter->prepare_chain_for_fade_from_texture(qf.output_tex, frame2, fade_alpha)->render_to_fbo(resources.fade_fbo, 1280, 720); + ycbcr_semiplanar_converter->prepare_chain_for_fade_from_texture(qf.output_tex, frame2, fade_alpha)->render_to_fbo(resources->fade_fbo, 1280, 720); // Subsample and split Cb/Cr. - chroma_subsampler->subsample_chroma(resources.fade_cbcr_output_tex, 1280, 720, resources.cb_tex, resources.cr_tex); + chroma_subsampler->subsample_chroma(resources->fade_cbcr_output_tex, 1280, 720, resources->cb_tex, resources->cr_tex); interpolate_no_split->release_texture(qf.output_tex); } else { - tie(qf.output_tex, qf.cbcr_tex) = interpolate->exec(resources.input_tex, resources.gray_tex, qf.flow_tex, 1280, 720, alpha); + tie(qf.output_tex, qf.cbcr_tex) = interpolate->exec(resources->input_tex, resources->gray_tex, qf.flow_tex, 1280, 720, alpha); check_error(); // Subsample and split Cb/Cr. - chroma_subsampler->subsample_chroma(qf.cbcr_tex, 1280, 720, resources.cb_tex, resources.cr_tex); + chroma_subsampler->subsample_chroma(qf.cbcr_tex, 1280, 720, resources->cb_tex, resources->cr_tex); } // We could have released qf.flow_tex here, but to make sure we don't cause a stall @@ -489,17 +457,17 @@ void VideoStream::schedule_interpolated_frame(steady_clock::time_point local_pts // Read it down (asynchronously) to the CPU. glPixelStorei(GL_PACK_ROW_LENGTH, 0); - glBindBuffer(GL_PIXEL_PACK_BUFFER, resources.pbo); + glBindBuffer(GL_PIXEL_PACK_BUFFER, resources->pbo); check_error(); - if (secondary_stream_idx != -1) { - glGetTextureImage(resources.fade_y_output_tex, 0, GL_RED, GL_UNSIGNED_BYTE, 1280 * 720 * 4, BUFFER_OFFSET(0)); + if (secondary_frame.pts != -1) { + glGetTextureImage(resources->fade_y_output_tex, 0, GL_RED, GL_UNSIGNED_BYTE, 1280 * 720 * 4, BUFFER_OFFSET(0)); } else { glGetTextureImage(qf.output_tex, 0, GL_RED, GL_UNSIGNED_BYTE, 1280 * 720 * 4, BUFFER_OFFSET(0)); } check_error(); - glGetTextureImage(resources.cb_tex, 0, GL_RED, GL_UNSIGNED_BYTE, 1280 * 720 * 3, BUFFER_OFFSET(1280 * 720)); + glGetTextureImage(resources->cb_tex, 0, GL_RED, GL_UNSIGNED_BYTE, 1280 * 720 * 3, BUFFER_OFFSET(1280 * 720)); check_error(); - glGetTextureImage(resources.cr_tex, 0, GL_RED, GL_UNSIGNED_BYTE, 1280 * 720 * 3 - 640 * 720, BUFFER_OFFSET(1280 * 720 + 640 * 720)); + glGetTextureImage(resources->cr_tex, 0, GL_RED, GL_UNSIGNED_BYTE, 1280 * 720 * 3 - 640 * 720, BUFFER_OFFSET(1280 * 720 + 640 * 720)); check_error(); glBindBuffer(GL_PIXEL_PACK_BUFFER, 0); @@ -508,6 +476,7 @@ void VideoStream::schedule_interpolated_frame(steady_clock::time_point local_pts check_error(); qf.fence = RefCountedGLsync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0); check_error(); + qf.resources = move(resources); unique_lock lock(queue_lock); frame_queue.push_back(move(qf)); @@ -597,7 +566,7 @@ void VideoStream::encode_thread_func() if (qf.type == QueuedFrame::ORIGINAL) { // Send the JPEG frame on, unchanged. - string jpeg = read_file(filename_for_frame(qf.stream_idx, qf.input_first_pts)); + string jpeg = read_frame(qf.frame1); AVPacket pkt; av_init_packet(&pkt); pkt.stream_index = 0; @@ -609,7 +578,7 @@ void VideoStream::encode_thread_func() } else if (qf.type == QueuedFrame::FADED) { glClientWaitSync(qf.fence.get(), /*flags=*/0, GL_TIMEOUT_IGNORED); - shared_ptr frame = frame_from_pbo(qf.resources.pbo_contents, 1280, 720); + shared_ptr frame = frame_from_pbo(qf.resources->pbo_contents, 1280, 720); // Now JPEG encode it, and send it on to the stream. vector jpeg = encode_jpeg(frame->y.get(), frame->cb.get(), frame->cr.get(), 1280, 720); @@ -621,16 +590,14 @@ void VideoStream::encode_thread_func() pkt.size = jpeg.size(); stream_mux->add_packet(pkt, qf.output_pts, qf.output_pts); last_frame = move(jpeg); - - // Put the frame resources back. - unique_lock lock(queue_lock); - interpolate_resources.push_back(qf.resources); } else if (qf.type == QueuedFrame::INTERPOLATED || qf.type == QueuedFrame::FADED_INTERPOLATED) { glClientWaitSync(qf.fence.get(), /*flags=*/0, GL_TIMEOUT_IGNORED); - // Send a copy of the frame on to display. - shared_ptr frame = frame_from_pbo(qf.resources.pbo_contents, 1280, 720); - JPEGFrameView::insert_interpolated_frame(qf.id, frame); + // Send it on to display. + shared_ptr frame = frame_from_pbo(qf.resources->pbo_contents, 1280, 720); + if (qf.display_decoded_func != nullptr) { + qf.display_decoded_func(frame); + } // Now JPEG encode it, and send it on to the stream. vector jpeg = encode_jpeg(frame->y.get(), frame->cb.get(), frame->cr.get(), 1280, 720); @@ -647,10 +614,6 @@ void VideoStream::encode_thread_func() pkt.size = jpeg.size(); stream_mux->add_packet(pkt, qf.output_pts, qf.output_pts); last_frame = move(jpeg); - - // Put the frame resources back. - unique_lock lock(queue_lock); - interpolate_resources.push_back(qf.resources); } else if (qf.type == QueuedFrame::REFRESH) { AVPacket pkt; av_init_packet(&pkt);