-#define GL_GLEXT_PROTOTYPES 1
-#define NO_SDL_GLEXT 1
-#define NUM_CARDS 2
-
#define WIDTH 1280
#define HEIGHT 720
-
-#include <epoxy/gl.h>
-#include <epoxy/egl.h>
+#define EXTRAHEIGHT 30
#undef Success
-#include <assert.h>
-#include <features.h>
-#include <math.h>
-#include <png.h>
-#include <pngconf.h>
-#include <setjmp.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/time.h>
-#include <time.h>
-#include <mutex>
-#include <queue>
-#include <condition_variable>
+#include "mixer.h"
-#include <diffusion_effect.h>
+#include <assert.h>
#include <effect.h>
#include <effect_chain.h>
-#include <flat_input.h>
+#include <effect_util.h>
+#include <epoxy/egl.h>
+#include <features.h>
#include <image_format.h>
#include <init.h>
-#include <lift_gamma_gain_effect.h>
-#include <saturation_effect.h>
-#include <util.h>
-#include <ycbcr_input.h>
-#include <vignette_effect.h>
-#include <resample_effect.h>
-#include <resize_effect.h>
#include <overlay_effect.h>
#include <padding_effect.h>
+#include <resample_effect.h>
+#include <resource_pool.h>
+#include <saturation_effect.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/time.h>
+#include <time.h>
+#include <util.h>
#include <white_balance_effect.h>
#include <ycbcr.h>
-#include <resource_pool.h>
-#include <effect_util.h>
-
-#include <EGL/egl.h>
+#include <ycbcr_input.h>
+#include <cmath>
+#include <condition_variable>
+#include <cstddef>
+#include <memory>
+#include <mutex>
+#include <string>
+#include <thread>
+#include <vector>
-#include "h264encode.h"
+#include "bmusb/bmusb.h"
#include "context.h"
-#include "bmusb.h"
+#include "h264encode.h"
#include "pbo_frame_allocator.h"
+#include "ref_counted_gl_sync.h"
+#include "timebase.h"
+
+class QOpenGLContext;
using namespace movit;
using namespace std;
using namespace std::placeholders;
+Mixer *global_mixer = nullptr;
-std::mutex bmusb_mutex; // protects <cards>
-
-struct CaptureCard {
- BMUSBCapture *usb;
-
- // Threading stuff
- bool thread_initialized;
- QSurface *surface;
- QOpenGLContext *context;
-
- bool new_data_ready; // Whether new_frame contains anything.
- PBOFrameAllocator::Frame new_frame;
- GLsync new_data_ready_fence; // Whether new_frame is ready for rendering.
- std::condition_variable new_data_ready_changed; // Set whenever new_data_ready is changed.
-};
-CaptureCard cards[NUM_CARDS];
+namespace {
-void bm_frame(int card_index, uint16_t timecode,
- FrameAllocator::Frame video_frame, size_t video_offset, uint16_t video_format,
- FrameAllocator::Frame audio_frame, size_t audio_offset, uint16_t audio_format)
+void convert_fixed24_to_fp32(float *dst, size_t out_channels, const uint8_t *src, size_t in_channels, size_t num_samples)
{
- CaptureCard *card = &cards[card_index];
- if (!card->thread_initialized) {
- printf("initializing context for bmusb thread %d\n", card_index);
- eglBindAPI(EGL_OPENGL_API);
- card->context = create_context();
- if (!make_current(card->context, card->surface)) {
- printf("failed to create bmusb context\n");
- exit(1);
+ for (size_t i = 0; i < num_samples; ++i) {
+ for (size_t j = 0; j < out_channels; ++j) {
+ uint32_t s1 = *src++;
+ uint32_t s2 = *src++;
+ uint32_t s3 = *src++;
+ uint32_t s = s1 | (s1 << 8) | (s2 << 16) | (s3 << 24);
+ dst[i * out_channels + j] = int(s) * (1.0f / 4294967296.0f);
}
- card->thread_initialized = true;
- }
-
- if (video_frame.len - video_offset != 1280 * 750 * 2) {
- printf("dropping frame with wrong length (%ld)\n", video_frame.len - video_offset);
- FILE *fp = fopen("frame.raw", "wb");
- fwrite(video_frame.data, video_frame.len, 1, fp);
- fclose(fp);
- //exit(1);
- card->usb->get_video_frame_allocator()->release_frame(video_frame);
- card->usb->get_audio_frame_allocator()->release_frame(audio_frame);
- return;
+ src += 3 * (in_channels - out_channels);
}
- {
- // Wait until the previous frame was consumed.
- std::unique_lock<std::mutex> lock(bmusb_mutex);
- card->new_data_ready_changed.wait(lock, [card]{ return !card->new_data_ready; });
- }
- GLuint pbo = (GLint)(intptr_t)video_frame.userdata;
- check_error();
- glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
- check_error();
- glFlushMappedBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, video_frame.size);
- check_error();
- //glMemoryBarrier(GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT);
- //check_error();
- GLsync fence = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
- check_error();
- assert(fence != nullptr);
- {
- std::unique_lock<std::mutex> lock(bmusb_mutex);
- card->new_data_ready = true;
- card->new_frame = video_frame;
- card->new_data_ready_fence = fence;
- card->new_data_ready_changed.notify_all();
- }
-
- // Video frame will be released later.
- card->usb->get_audio_frame_allocator()->release_frame(audio_frame);
}
-
-void place_rectangle(Effect *resample_effect, Effect *padding_effect, float x0, float y0, float x1, float y1)
-{
- float srcx0 = 0.0f;
- float srcx1 = 1.0f;
- float srcy0 = 0.0f;
- float srcy1 = 1.0f;
-
- // Cull.
- if (x0 > 1280.0 || x1 < 0.0 || y0 > 720.0 || y1 < 0.0) {
- CHECK(resample_effect->set_int("width", 1));
- CHECK(resample_effect->set_int("height", 1));
- CHECK(resample_effect->set_float("zoom_x", 1280.0));
- CHECK(resample_effect->set_float("zoom_y", 720.0));
- CHECK(padding_effect->set_int("left", 2000));
- CHECK(padding_effect->set_int("top", 2000));
- return;
- }
- // Clip. (TODO: Clip on upper/left sides, too.)
- if (x1 > 1280.0) {
- srcx1 = (1280.0 - x0) / (x1 - x0);
- x1 = 1280.0;
- }
- if (y1 > 720.0) {
- srcy1 = (720.0 - y0) / (y1 - y0);
- y1 = 720.0;
- }
+} // namespace
- float x_subpixel_offset = x0 - floor(x0);
- float y_subpixel_offset = y0 - floor(y0);
-
- // Resampling must be to an integral number of pixels. Round up,
- // and then add an extra pixel so we have some leeway for the border.
- int width = int(ceil(x1 - x0)) + 1;
- int height = int(ceil(y1 - y0)) + 1;
- CHECK(resample_effect->set_int("width", width));
- CHECK(resample_effect->set_int("height", height));
-
- // Correct the discrepancy with zoom. (This will leave a small
- // excess edge of pixels and subpixels, which we'll correct for soon.)
- float zoom_x = (x1 - x0) / (width * (srcx1 - srcx0));
- float zoom_y = (y1 - y0) / (height * (srcy1 - srcy0));
- CHECK(resample_effect->set_float("zoom_x", zoom_x));
- CHECK(resample_effect->set_float("zoom_y", zoom_y));
- CHECK(resample_effect->set_float("zoom_center_x", 0.0f));
- CHECK(resample_effect->set_float("zoom_center_y", 0.0f));
-
- // Padding must also be to a whole-pixel offset.
- CHECK(padding_effect->set_int("left", floor(x0)));
- CHECK(padding_effect->set_int("top", floor(y0)));
-
- // Correct _that_ discrepancy by subpixel offset in the resampling.
- CHECK(resample_effect->set_float("left", -x_subpixel_offset / zoom_x));
- CHECK(resample_effect->set_float("top", -y_subpixel_offset / zoom_y));
-
- // Finally, adjust the border so it is exactly where we want it.
- CHECK(padding_effect->set_float("border_offset_left", x_subpixel_offset));
- CHECK(padding_effect->set_float("border_offset_right", x1 - (floor(x0) + width)));
- CHECK(padding_effect->set_float("border_offset_top", y_subpixel_offset));
- CHECK(padding_effect->set_float("border_offset_bottom", y1 - (floor(y0) + height)));
-}
-
-static bool quit = false;
-
-void mixer_thread_func(QSurface *surface, QSurface *surface2, QSurface *surface3, QSurface *surface4)
+Mixer::Mixer(const QSurfaceFormat &format)
+ : httpd("test.ts", WIDTH, HEIGHT),
+ mixer_surface(create_surface(format)),
+ h264_encoder_surface(create_surface(format))
{
- cards[0].surface = surface3;
-#if NUM_CARDS == 2
- cards[1].surface = surface4;
-#endif
-
- eglBindAPI(EGL_OPENGL_API);
- QOpenGLContext *context = create_context();
- if (!make_current(context, surface)) {
- printf("oops\n");
- exit(1);
- }
+ httpd.start(9095);
- CHECK(init_movit("/usr/share/movit", MOVIT_DEBUG_ON));
+ CHECK(init_movit(MOVIT_SHADER_DIR, MOVIT_DEBUG_OFF));
check_error();
- EffectChain chain(WIDTH, HEIGHT);
- check_error();
+ resource_pool.reset(new ResourcePool);
+ theme.reset(new Theme("theme.lua", resource_pool.get()));
+ output_channel[OUTPUT_LIVE].parent = this;
+ output_channel[OUTPUT_PREVIEW].parent = this;
+ output_channel[OUTPUT_INPUT0].parent = this;
+ output_channel[OUTPUT_INPUT1].parent = this;
ImageFormat inout_format;
inout_format.color_space = COLORSPACE_sRGB;
inout_format.gamma_curve = GAMMA_sRGB;
- YCbCrFormat ycbcr_format;
- ycbcr_format.chroma_subsampling_x = 2;
- ycbcr_format.chroma_subsampling_y = 1;
- ycbcr_format.cb_x_position = 0.0;
- ycbcr_format.cr_x_position = 0.0;
- ycbcr_format.cb_y_position = 0.5;
- ycbcr_format.cr_y_position = 0.5;
- ycbcr_format.luma_coefficients = YCBCR_REC_601;
- ycbcr_format.full_range = false;
-
- YCbCrInput *input[NUM_CARDS];
-
- input[0] = new YCbCrInput(inout_format, ycbcr_format, WIDTH, HEIGHT, YCBCR_INPUT_SPLIT_Y_AND_CBCR);
- chain.add_input(input[0]);
- input[1] = new YCbCrInput(inout_format, ycbcr_format, WIDTH, HEIGHT, YCBCR_INPUT_SPLIT_Y_AND_CBCR);
- chain.add_input(input[1]);
- Effect *resample_effect = chain.add_effect(new ResampleEffect(), input[0]);
- Effect *padding_effect = chain.add_effect(new IntegralPaddingEffect());
- float border_color[] = { 0.0f, 0.0f, 0.0f, 1.0f };
- CHECK(padding_effect->set_vec4("border_color", border_color));
-
- Effect *resample2_effect = chain.add_effect(new ResampleEffect(), input[1]);
- Effect *saturation_effect = chain.add_effect(new SaturationEffect());
- CHECK(saturation_effect->set_float("saturation", 0.3f));
- Effect *wb_effect = chain.add_effect(new WhiteBalanceEffect());
- CHECK(wb_effect->set_float("output_color_temperature", 3500.0));
- Effect *padding2_effect = chain.add_effect(new IntegralPaddingEffect());
-
- chain.add_effect(new OverlayEffect(), padding_effect, padding2_effect);
-
- ycbcr_format.chroma_subsampling_x = 1;
-
- chain.add_ycbcr_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, ycbcr_format, YCBCR_OUTPUT_SPLIT_Y_AND_CBCR);
- chain.set_dither_bits(8);
- chain.set_output_origin(OUTPUT_ORIGIN_TOP_LEFT);
- chain.finalize();
-
- H264Encoder h264_encoder(surface2, WIDTH, HEIGHT, "test.mp4");
-
- printf("Configuring first card...\n");
- cards[0].usb = new BMUSBCapture(0x1edb, 0xbd3b); // 0xbd4f
- //cards[0].usb = new BMUSBCapture(0x1edb, 0xbd4f);
- cards[0].usb->set_frame_callback(std::bind(bm_frame, 0, _1, _2, _3, _4, _5, _6, _7));
- std::unique_ptr<PBOFrameAllocator> pbo_allocator1(new PBOFrameAllocator(1280 * 750 * 2 + 44));
- cards[0].usb->set_video_frame_allocator(pbo_allocator1.get());
- cards[0].usb->configure_card();
-
- std::unique_ptr<PBOFrameAllocator> pbo_allocator2(new PBOFrameAllocator(1280 * 750 * 2 + 44));
- if (NUM_CARDS == 2) {
- printf("Configuring second card...\n");
- cards[1].usb = new BMUSBCapture(0x1edb, 0xbd4f);
- cards[1].usb->set_frame_callback(std::bind(bm_frame, 1, _1, _2, _3, _4, _5, _6, _7));
- cards[1].usb->set_video_frame_allocator(pbo_allocator2.get());
- cards[1].usb->configure_card();
- }
+ // Display chain; shows the live output produced by the main chain (its RGBA version).
+ display_chain.reset(new EffectChain(WIDTH, HEIGHT, resource_pool.get()));
+ check_error();
+ display_input = new FlatInput(inout_format, FORMAT_RGB, GL_UNSIGNED_BYTE, WIDTH, HEIGHT); // FIXME: GL_UNSIGNED_BYTE is really wrong.
+ display_chain->add_input(display_input);
+ display_chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
+ display_chain->set_dither_bits(0); // Don't bother.
+ display_chain->finalize();
- BMUSBCapture::start_bm_thread();
+ h264_encoder.reset(new H264Encoder(h264_encoder_surface, WIDTH, HEIGHT, &httpd));
for (int card_index = 0; card_index < NUM_CARDS; ++card_index) {
- cards[card_index].usb->start_bm_capture();
+ printf("Configuring card %d...\n", card_index);
+ CaptureCard *card = &cards[card_index];
+ card->usb = new BMUSBCapture(card_index);
+ card->usb->set_frame_callback(bind(&Mixer::bm_frame, this, card_index, _1, _2, _3, _4, _5, _6, _7));
+ card->frame_allocator.reset(new PBOFrameAllocator(WIDTH * (HEIGHT+EXTRAHEIGHT) * 2 + 44, WIDTH, HEIGHT));
+ card->usb->set_video_frame_allocator(card->frame_allocator.get());
+ card->surface = create_surface(format);
+ card->usb->set_dequeue_thread_callbacks(
+ [card]{
+ eglBindAPI(EGL_OPENGL_API);
+ card->context = create_context();
+ if (!make_current(card->context, card->surface)) {
+ printf("failed to create bmusb context\n");
+ exit(1);
+ }
+ },
+ [this]{
+ resource_pool->clean_context();
+ });
+ card->resampler.reset(new Resampler(48000.0, 48000.0, 2));
+ card->usb->configure_card();
}
- int frame = 0;
-#if _POSIX_C_SOURCE >= 199309L
- struct timespec start, now;
- clock_gettime(CLOCK_MONOTONIC, &start);
-#else
- struct timeval start, now;
- gettimeofday(&start, NULL);
-#endif
+ BMUSBCapture::start_bm_thread();
- PBOFrameAllocator::Frame bmusb_current_rendering_frame[NUM_CARDS];
for (int card_index = 0; card_index < NUM_CARDS; ++card_index) {
- bmusb_current_rendering_frame[card_index] =
- cards[card_index].usb->get_video_frame_allocator()->alloc_frame();
- GLint input_tex_pbo = (GLint)(intptr_t)bmusb_current_rendering_frame[card_index].userdata;
- input[card_index]->set_pixel_data(0, nullptr, input_tex_pbo);
- input[card_index]->set_pixel_data(1, nullptr, input_tex_pbo);
- check_error();
+ cards[card_index].usb->start_bm_capture();
}
- //chain.enable_phase_timing(true);
+ //chain->enable_phase_timing(true);
// Set up stuff for NV12 conversion.
- ResourcePool *resource_pool = chain.get_resource_pool();
- GLuint chroma_tex = resource_pool->create_2d_texture(GL_RG8, WIDTH, HEIGHT);
// Cb/Cr shader.
string cbcr_vert_shader = read_file("vs-cbcr.130.vert");
"void main() { \n"
" gl_FragColor = texture2D(cbcr_tex, tc0); \n"
"} \n";
- GLuint cbcr_program_num = resource_pool->compile_glsl_program(cbcr_vert_shader, cbcr_frag_shader);
+ cbcr_program_num = resource_pool->compile_glsl_program(cbcr_vert_shader, cbcr_frag_shader);
+}
- GLuint vao;
- glGenVertexArrays(1, &vao);
+Mixer::~Mixer()
+{
+ resource_pool->release_glsl_program(cbcr_program_num);
+ BMUSBCapture::stop_bm_thread();
+
+ for (int card_index = 0; card_index < NUM_CARDS; ++card_index) {
+ {
+ unique_lock<mutex> lock(bmusb_mutex);
+ cards[card_index].should_quit = true; // Unblock thread.
+ cards[card_index].new_data_ready_changed.notify_all();
+ }
+ cards[card_index].usb->stop_dequeue_thread();
+ }
+}
+
+namespace {
+
+int unwrap_timecode(uint16_t current_wrapped, int last)
+{
+ uint16_t last_wrapped = last & 0xffff;
+ if (current_wrapped > last_wrapped) {
+ return (last & ~0xffff) | current_wrapped;
+ } else {
+ return 0x10000 + ((last & ~0xffff) | current_wrapped);
+ }
+}
+
+} // namespace
+
+void Mixer::bm_frame(int card_index, uint16_t timecode,
+ FrameAllocator::Frame video_frame, size_t video_offset, uint16_t video_format,
+ FrameAllocator::Frame audio_frame, size_t audio_offset, uint16_t audio_format)
+{
+ CaptureCard *card = &cards[card_index];
+
+ if (audio_frame.len - audio_offset > 30000) {
+ printf("Card %d: Dropping frame with implausible audio length (len=%d, offset=%d) [timecode=0x%04x video_len=%d video_offset=%d video_format=%x)\n",
+ card_index, int(audio_frame.len), int(audio_offset),
+ timecode, int(video_frame.len), int(video_offset), video_format);
+ if (video_frame.owner) {
+ video_frame.owner->release_frame(video_frame);
+ }
+ if (audio_frame.owner) {
+ audio_frame.owner->release_frame(audio_frame);
+ }
+ return;
+ }
+
+ // Convert the audio to stereo fp32 and add it.
+ size_t num_samples = (audio_frame.len - audio_offset) / 8 / 3;
+ vector<float> audio;
+ audio.resize(num_samples * 2);
+ convert_fixed24_to_fp32(&audio[0], 2, audio_frame.data + audio_offset, 8, num_samples);
+
+ int unwrapped_timecode = timecode;
+ int dropped_frames = 0;
+ if (card->last_timecode != -1) {
+ unwrapped_timecode = unwrap_timecode(unwrapped_timecode, card->last_timecode);
+ dropped_frames = unwrapped_timecode - card->last_timecode - 1;
+ }
+ card->last_timecode = unwrapped_timecode;
+
+ // Add the audio.
+ {
+ unique_lock<mutex> lock(card->audio_mutex);
+
+ int unwrapped_timecode = timecode;
+ if (dropped_frames > 60 * 2) {
+ fprintf(stderr, "Card %d lost more than two seconds (or time code jumping around), resetting resampler\n",
+ card_index);
+ card->resampler.reset(new Resampler(48000.0, 48000.0, 2));
+ } else if (dropped_frames > 0) {
+ // Insert silence as needed.
+ fprintf(stderr, "Card %d dropped %d frame(s) (before timecode 0x%04x), inserting silence.\n",
+ card_index, dropped_frames, timecode);
+ vector<float> silence;
+ silence.resize((48000 / 60) * 2);
+ for (int i = 0; i < dropped_frames; ++i) {
+ card->resampler->add_input_samples((unwrapped_timecode - dropped_frames + i) / 60.0, silence.data(), (48000 / 60));
+ }
+ }
+ card->resampler->add_input_samples(unwrapped_timecode / 60.0, audio.data(), num_samples);
+ }
+
+ // Done with the audio, so release it.
+ if (audio_frame.owner) {
+ audio_frame.owner->release_frame(audio_frame);
+ }
+
+ {
+ // Wait until the previous frame was consumed.
+ unique_lock<mutex> lock(bmusb_mutex);
+ card->new_data_ready_changed.wait(lock, [card]{ return !card->new_data_ready || card->should_quit; });
+ if (card->should_quit) return;
+ }
+
+ if (video_frame.len - video_offset != WIDTH * (HEIGHT+EXTRAHEIGHT) * 2) {
+ if (video_frame.len != 0) {
+ printf("Card %d: Dropping video frame with wrong length (%ld)\n",
+ card_index, video_frame.len - video_offset);
+ }
+ if (video_frame.owner) {
+ video_frame.owner->release_frame(video_frame);
+ }
+
+ // Still send on the information that we _had_ a frame, even though it's corrupted,
+ // so that pts can go up accordingly.
+ {
+ unique_lock<mutex> lock(bmusb_mutex);
+ card->new_data_ready = true;
+ card->new_frame = RefCountedFrame(FrameAllocator::Frame());
+ card->new_data_ready_fence = nullptr;
+ card->dropped_frames = dropped_frames;
+ card->new_data_ready_changed.notify_all();
+ }
+ return;
+ }
+
+ const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)video_frame.userdata;
+ GLuint pbo = userdata->pbo;
+ check_error();
+ glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
check_error();
+ glFlushMappedBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, video_frame.size);
+ check_error();
+ //glMemoryBarrier(GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT);
+ //check_error();
- while (!quit) {
- ++frame;
+ // Upload the textures.
+ glBindTexture(GL_TEXTURE_2D, userdata->tex_y);
+ check_error();
+ glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, WIDTH, HEIGHT, GL_RED, GL_UNSIGNED_BYTE, BUFFER_OFFSET((WIDTH * (HEIGHT+EXTRAHEIGHT) * 2 + 44) / 2 + WIDTH * 25 + 22));
+ check_error();
+ glBindTexture(GL_TEXTURE_2D, userdata->tex_cbcr);
+ check_error();
+ glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, WIDTH/2, HEIGHT, GL_RG, GL_UNSIGNED_BYTE, BUFFER_OFFSET(WIDTH * 25 + 22));
+ check_error();
+ glBindTexture(GL_TEXTURE_2D, 0);
+ check_error();
+ GLsync fence = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
+ check_error();
+ assert(fence != nullptr);
+
+ {
+ unique_lock<mutex> lock(bmusb_mutex);
+ card->new_data_ready = true;
+ card->new_frame = RefCountedFrame(video_frame);
+ card->new_data_ready_fence = fence;
+ card->dropped_frames = dropped_frames;
+ card->new_data_ready_changed.notify_all();
+ }
+}
- //int width0 = lrintf(848 * (1.0 + 0.2 * sin(frame * 0.02)));
- int width0 = 848;
- int height0 = lrintf(width0 * 9.0 / 16.0);
-
- //float top0 = 96 + 48 * sin(frame * 0.005);
- //float left0 = 96 + 48 * cos(frame * 0.006);
- float top0 = 48;
- float left0 = 16;
- float bottom0 = top0 + height0;
- float right0 = left0 + width0;
-
- int width1 = 384;
- int height1 = 216;
-
- float bottom1 = 720 - 48;
- float right1 = 1280 - 16;
- float top1 = bottom1 - height1;
- float left1 = right1 - width1;
-
- float t = 0.5 + 0.5 * cos(frame * 0.006);
- //float t = 0.0;
- float scale0 = 1.0 + t * (1280.0 / 848.0 - 1.0);
- float tx0 = 0.0 + t * (-16.0 * scale0);
- float ty0 = 0.0 + t * (-48.0 * scale0);
-
- top0 = top0 * scale0 + ty0;
- bottom0 = bottom0 * scale0 + ty0;
- left0 = left0 * scale0 + tx0;
- right0 = right0 * scale0 + tx0;
-
- top1 = top1 * scale0 + ty0;
- bottom1 = bottom1 * scale0 + ty0;
- left1 = left1 * scale0 + tx0;
- right1 = right1 * scale0 + tx0;
-
- place_rectangle(resample_effect, padding_effect, left0, top0, right0, bottom0);
- place_rectangle(resample2_effect, padding2_effect, left1, top1, right1, bottom1);
+void Mixer::thread_func()
+{
+ eglBindAPI(EGL_OPENGL_API);
+ QOpenGLContext *context = create_context();
+ if (!make_current(context, mixer_surface)) {
+ printf("oops\n");
+ exit(1);
+ }
+ struct timespec start, now;
+ clock_gettime(CLOCK_MONOTONIC, &start);
+
+ int frame = 0;
+ int dropped_frames = 0;
+
+ while (!should_quit) {
CaptureCard card_copy[NUM_CARDS];
{
- std::unique_lock<std::mutex> lock(bmusb_mutex);
+ unique_lock<mutex> lock(bmusb_mutex);
// The first card is the master timer, so wait for it to have a new frame.
// TODO: Make configurable, and with a timeout.
- cards[0].new_data_ready_changed.wait(lock, []{ return cards[0].new_data_ready; });
+ cards[0].new_data_ready_changed.wait(lock, [this]{ return cards[0].new_data_ready; });
for (int card_index = 0; card_index < NUM_CARDS; ++card_index) {
CaptureCard *card = &cards[card_index];
card_copy[card_index].new_data_ready = card->new_data_ready;
card_copy[card_index].new_frame = card->new_frame;
card_copy[card_index].new_data_ready_fence = card->new_data_ready_fence;
+ card_copy[card_index].new_frame_audio = move(card->new_frame_audio);
+ card_copy[card_index].dropped_frames = card->dropped_frames;
card->new_data_ready = false;
card->new_data_ready_changed.notify_all();
}
}
- vector<FrameAllocator::Frame> input_frames_to_release;
-
+ // Resample the audio as needed, including from previously dropped frames.
+ vector<float> samples_out;
+ // TODO: Allow using audio from the other card(s) as well.
+ for (unsigned frame_num = 0; frame_num < card_copy[0].dropped_frames + 1; ++frame_num) {
+ for (unsigned card_index = 0; card_index < NUM_CARDS; ++card_index) {
+ samples_out.resize((48000 / 60) * 2);
+ {
+ unique_lock<mutex> lock(cards[card_index].audio_mutex);
+ if (!cards[card_index].resampler->get_output_samples(pts(), &samples_out[0], 48000 / 60)) {
+ printf("Card %d reported previous underrun.\n", card_index);
+ }
+ }
+ if (card_index == 0) {
+ h264_encoder->add_audio(pts_int, move(samples_out));
+ }
+ }
+ if (frame_num != card_copy[0].dropped_frames) {
+ // For dropped frames, increase the pts.
+ ++dropped_frames;
+ pts_int += TIMEBASE / 60;
+ }
+ }
+
+ // If the first card is reporting a corrupted or otherwise dropped frame,
+ // just increase the pts (skipping over this frame) and don't try to compute anything new.
+ if (card_copy[0].new_frame->len == 0) {
+ ++dropped_frames;
+ pts_int += TIMEBASE / 60;
+ continue;
+ }
+
for (int card_index = 0; card_index < NUM_CARDS; ++card_index) {
CaptureCard *card = &card_copy[card_index];
- if (!card->new_data_ready)
+ if (!card->new_data_ready || card->new_frame->len == 0)
continue;
- // Now we're done with the previous frame, so we can definitely
- // release it when this is done rendering. (Actually, we could do
- // it one frame earlier, but before we have a new one, there's no
- // knowing when the current one is released.)
- input_frames_to_release.push_back(bmusb_current_rendering_frame[card_index]);
+ assert(card->new_frame != nullptr);
bmusb_current_rendering_frame[card_index] = card->new_frame;
+ check_error();
// The new texture might still be uploaded,
// tell the GPU to wait until it's there.
- if (card->new_data_ready_fence)
+ if (card->new_data_ready_fence) {
glWaitSync(card->new_data_ready_fence, /*flags=*/0, GL_TIMEOUT_IGNORED);
- check_error();
- glDeleteSync(card->new_data_ready_fence);
- check_error();
- GLint input_tex_pbo = (GLint)(intptr_t)card->new_frame.userdata;
- input[card_index]->set_pixel_data(0, (unsigned char *)BUFFER_OFFSET((1280 * 750 * 2 + 44) / 2 + 1280 * 25 + 22), input_tex_pbo);
- input[card_index]->set_pixel_data(1, (unsigned char *)BUFFER_OFFSET(1280 * 25 + 22), input_tex_pbo);
-
- if (NUM_CARDS == 1) {
- // Set to the other one, too.
- input[1]->set_pixel_data(0, (unsigned char *)BUFFER_OFFSET((1280 * 750 * 2 + 44) / 2 + 1280 * 25 + 22), input_tex_pbo);
- input[1]->set_pixel_data(1, (unsigned char *)BUFFER_OFFSET(1280 * 25 + 22), input_tex_pbo);
+ check_error();
+ glDeleteSync(card->new_data_ready_fence);
+ check_error();
}
+ const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)card->new_frame->userdata;
+ theme->set_input_textures(card_index, userdata->tex_y, userdata->tex_cbcr);
}
+ // Get the main chain from the theme, and set its state immediately.
+ pair<EffectChain *, function<void()>> theme_main_chain = theme->get_chain(0, pts(), WIDTH, HEIGHT);
+ EffectChain *chain = theme_main_chain.first;
+ theme_main_chain.second();
+
GLuint y_tex, cbcr_tex;
- bool got_frame = h264_encoder.begin_frame(&y_tex, &cbcr_tex);
+ bool got_frame = h264_encoder->begin_frame(&y_tex, &cbcr_tex);
assert(got_frame);
- // Render chain.
- {
- GLuint ycbcr_fbo = resource_pool->create_fbo(y_tex, chroma_tex);
- chain.render_to_fbo(ycbcr_fbo, WIDTH, HEIGHT);
- resource_pool->release_fbo(ycbcr_fbo);
- }
+ // Render main chain.
+ GLuint cbcr_full_tex = resource_pool->create_2d_texture(GL_RG8, WIDTH, HEIGHT);
+ GLuint rgba_tex = resource_pool->create_2d_texture(GL_RGB565, WIDTH, HEIGHT); // Saves texture bandwidth, although dithering gets messed up.
+ GLuint fbo = resource_pool->create_fbo(y_tex, cbcr_full_tex, rgba_tex);
+ chain->render_to_fbo(fbo, WIDTH, HEIGHT);
+ resource_pool->release_fbo(fbo);
- // Set up for extraction.
- float vertices[] = {
- 0.0f, 2.0f,
- 0.0f, 0.0f,
- 2.0f, 0.0f
- };
+ subsample_chroma(cbcr_full_tex, cbcr_tex);
+ resource_pool->release_2d_texture(cbcr_full_tex);
- glBindVertexArray(vao);
- check_error();
+ // Set the right state for rgba_tex.
+ glBindFramebuffer(GL_FRAMEBUFFER, 0);
+ glBindTexture(GL_TEXTURE_2D, rgba_tex);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
- // Extract Cb/Cr.
- GLuint cbcr_fbo = resource_pool->create_fbo(cbcr_tex);
- glBindFramebuffer(GL_FRAMEBUFFER, cbcr_fbo);
- glViewport(0, 0, WIDTH/2, HEIGHT/2);
+ RefCountedGLsync fence(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
check_error();
- GLsync fence;
- {
- glUseProgram(cbcr_program_num);
- check_error();
- glActiveTexture(GL_TEXTURE0);
- check_error();
- glBindTexture(GL_TEXTURE_2D, chroma_tex);
- check_error();
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- check_error();
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
- check_error();
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
- check_error();
-
- float chroma_offset_0[] = { -0.5f / WIDTH, 0.0f };
- set_uniform_vec2(cbcr_program_num, "foo", "chroma_offset_0", chroma_offset_0);
-
- GLuint position_vbo = fill_vertex_attribute(cbcr_program_num, "position", 2, GL_FLOAT, sizeof(vertices), vertices);
- GLuint texcoord_vbo = fill_vertex_attribute(cbcr_program_num, "texcoord", 2, GL_FLOAT, sizeof(vertices), vertices); // Same as vertices.
-
- glDrawArrays(GL_TRIANGLES, 0, 3);
- check_error();
-
- cleanup_vertex_attribute(cbcr_program_num, "position", position_vbo);
- cleanup_vertex_attribute(cbcr_program_num, "texcoord", texcoord_vbo);
-
- glUseProgram(0);
- check_error();
-
- fence = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
- check_error();
-
- resource_pool->release_fbo(cbcr_fbo);
+ // Make sure the H.264 gets a reference to all the
+ // input frames needed, so that they are not released back
+ // until the rendering is done.
+ vector<RefCountedFrame> input_frames;
+ for (int card_index = 0; card_index < NUM_CARDS; ++card_index) {
+ input_frames.push_back(bmusb_current_rendering_frame[card_index]);
+ }
+ const int64_t av_delay = TIMEBASE / 10; // Corresponds to the fixed delay in resampler.h. TODO: Make less hard-coded.
+ h264_encoder->end_frame(fence, pts_int + av_delay, input_frames);
+ ++frame;
+ pts_int += TIMEBASE / 60;
+
+ // The live frame just shows the RGBA texture we just rendered.
+ // It owns rgba_tex now.
+ DisplayFrame live_frame;
+ live_frame.chain = display_chain.get();
+ live_frame.setup_chain = [this, rgba_tex]{
+ display_input->set_texture_num(rgba_tex);
+ };
+ live_frame.ready_fence = fence;
+ live_frame.input_frames = {};
+ live_frame.temp_textures = { rgba_tex };
+ output_channel[OUTPUT_LIVE].output_frame(live_frame);
+
+ // Set up preview and any additional channels.
+ for (int i = 1; i < theme->get_num_channels() + 2; ++i) {
+ DisplayFrame display_frame;
+ pair<EffectChain *, function<void()>> chain = theme->get_chain(i, pts(), WIDTH, HEIGHT); // FIXME: dimensions
+ display_frame.chain = chain.first;
+ display_frame.setup_chain = chain.second;
+ display_frame.ready_fence = fence;
+ display_frame.input_frames = { bmusb_current_rendering_frame[0], bmusb_current_rendering_frame[1] }; // FIXME: possible to do better?
+ display_frame.temp_textures = {};
+ output_channel[i].output_frame(display_frame);
}
- h264_encoder.end_frame(fence, input_frames_to_release);
-
-
-#if 1
-#if _POSIX_C_SOURCE >= 199309L
clock_gettime(CLOCK_MONOTONIC, &now);
double elapsed = now.tv_sec - start.tv_sec +
1e-9 * (now.tv_nsec - start.tv_nsec);
-#else
- gettimeofday(&now, NULL);
- double elapsed = now.tv_sec - start.tv_sec +
- 1e-6 * (now.tv_usec - start.tv_usec);
-#endif
if (frame % 100 == 0) {
- printf("%d frames in %.3f seconds = %.1f fps (%.1f ms/frame)\n",
- frame, elapsed, frame / elapsed,
+ printf("%d frames (%d dropped) in %.3f seconds = %.1f fps (%.1f ms/frame)\n",
+ frame, dropped_frames, elapsed, frame / elapsed,
1e3 * elapsed / frame);
- // chain.print_phase_timing();
+ // chain->print_phase_timing();
}
+#if 0
// Reset every 100 frames, so that local variations in frame times
// (especially for the first few frames, when the shaders are
// compiled etc.) don't make it hard to measure for the entire
start = now;
}
#endif
+ check_error();
}
+
+ resource_pool->clean_context();
+}
+
+void Mixer::subsample_chroma(GLuint src_tex, GLuint dst_tex)
+{
+ GLuint vao;
+ glGenVertexArrays(1, &vao);
+ check_error();
+
+ float vertices[] = {
+ 0.0f, 2.0f,
+ 0.0f, 0.0f,
+ 2.0f, 0.0f
+ };
+
+ glBindVertexArray(vao);
+ check_error();
+
+ // Extract Cb/Cr.
+ GLuint fbo = resource_pool->create_fbo(dst_tex);
+ glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+ glViewport(0, 0, WIDTH/2, HEIGHT/2);
+ check_error();
+
+ glUseProgram(cbcr_program_num);
+ check_error();
+
+ glActiveTexture(GL_TEXTURE0);
+ check_error();
+ glBindTexture(GL_TEXTURE_2D, src_tex);
+ check_error();
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ check_error();
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+ check_error();
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+ check_error();
+
+ float chroma_offset_0[] = { -0.5f / WIDTH, 0.0f };
+ set_uniform_vec2(cbcr_program_num, "foo", "chroma_offset_0", chroma_offset_0);
+
+ GLuint position_vbo = fill_vertex_attribute(cbcr_program_num, "position", 2, GL_FLOAT, sizeof(vertices), vertices);
+ GLuint texcoord_vbo = fill_vertex_attribute(cbcr_program_num, "texcoord", 2, GL_FLOAT, sizeof(vertices), vertices); // Same as vertices.
+
+ glDrawArrays(GL_TRIANGLES, 0, 3);
+ check_error();
+
+ cleanup_vertex_attribute(cbcr_program_num, "position", position_vbo);
+ cleanup_vertex_attribute(cbcr_program_num, "texcoord", texcoord_vbo);
+
+ glUseProgram(0);
+ check_error();
+
+ resource_pool->release_fbo(fbo);
glDeleteVertexArrays(1, &vao);
- resource_pool->release_glsl_program(cbcr_program_num);
- resource_pool->release_2d_texture(chroma_tex);
- BMUSBCapture::stop_bm_thread();
}
-std::thread mixer_thread;
+void Mixer::release_display_frame(DisplayFrame *frame)
+{
+ for (GLuint texnum : frame->temp_textures) {
+ resource_pool->release_2d_texture(texnum);
+ }
+ frame->temp_textures.clear();
+ frame->ready_fence.reset();
+ frame->input_frames.clear();
+}
-void start_mixer(QSurface *surface, QSurface *surface2, QSurface *surface3, QSurface *surface4)
+void Mixer::start()
{
- mixer_thread = std::thread([surface, surface2, surface3, surface4]{
- mixer_thread_func(surface, surface2, surface3, surface4);
- });
+ mixer_thread = thread(&Mixer::thread_func, this);
}
-void mixer_quit()
+void Mixer::quit()
{
- quit = true;
+ should_quit = true;
mixer_thread.join();
}
+
+void Mixer::transition_clicked(int transition_num)
+{
+ theme->transition_clicked(transition_num, pts());
+}
+
+void Mixer::channel_clicked(int preview_num)
+{
+ theme->channel_clicked(preview_num);
+}
+
+Mixer::OutputChannel::~OutputChannel()
+{
+ if (has_current_frame) {
+ parent->release_display_frame(¤t_frame);
+ }
+ if (has_ready_frame) {
+ parent->release_display_frame(&ready_frame);
+ }
+}
+
+void Mixer::OutputChannel::output_frame(DisplayFrame frame)
+{
+ // Store this frame for display. Remove the ready frame if any
+ // (it was seemingly never used).
+ {
+ unique_lock<mutex> lock(frame_mutex);
+ if (has_ready_frame) {
+ parent->release_display_frame(&ready_frame);
+ }
+ ready_frame = frame;
+ has_ready_frame = true;
+ }
+
+ if (has_new_frame_ready_callback) {
+ new_frame_ready_callback();
+ }
+}
+
+bool Mixer::OutputChannel::get_display_frame(DisplayFrame *frame)
+{
+ unique_lock<mutex> lock(frame_mutex);
+ if (!has_current_frame && !has_ready_frame) {
+ return false;
+ }
+
+ if (has_current_frame && has_ready_frame) {
+ // We have a new ready frame. Toss the current one.
+ parent->release_display_frame(¤t_frame);
+ has_current_frame = false;
+ }
+ if (has_ready_frame) {
+ assert(!has_current_frame);
+ current_frame = ready_frame;
+ ready_frame.ready_fence.reset(); // Drop the refcount.
+ ready_frame.input_frames.clear(); // Drop the refcounts.
+ has_current_frame = true;
+ has_ready_frame = false;
+ }
+
+ *frame = current_frame;
+ return true;
+}
+
+void Mixer::OutputChannel::set_frame_ready_callback(Mixer::new_frame_ready_callback_t callback)
+{
+ new_frame_ready_callback = callback;
+ has_new_frame_ready_callback = true;
+}
projects / nageru / blobdiff