+Mixer::Mixer(QSurface *surface1, QSurface *surface2, QSurface *surface3, QSurface *surface4)
+ : surface1(surface1), surface2(surface2), surface3(surface3), surface4(surface4)
+{
+ CHECK(init_movit(MOVIT_SHADER_DIR, MOVIT_DEBUG_OFF));
+ check_error();
+
+ chain.reset(new EffectChain(WIDTH, HEIGHT));
+ check_error();
+
+ 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;
+
+ 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]);
+ resample_effect = chain->add_effect(new ResampleEffect(), input[0]);
+ 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));
+
+ 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));
+ padding2_effect = chain->add_effect(new IntegralPaddingEffect());
+
+ chain->add_effect(new OverlayEffect(), padding_effect, padding2_effect);
+
+ ycbcr_format.chroma_subsampling_x = 1;
+
+ chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
+ 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();
+
+ h264_encoder.reset(new H264Encoder(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(&Mixer::bm_frame, this, 0, _1, _2, _3, _4, _5, _6, _7));
+ pbo_allocator1.reset(new PBOFrameAllocator(1280 * 750 * 2 + 44));
+ cards[0].usb->set_video_frame_allocator(pbo_allocator1.get());
+ cards[0].usb->configure_card();
+
+ pbo_allocator2.reset(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(&Mixer::bm_frame, this, 1, _1, _2, _3, _4, _5, _6, _7));
+ cards[1].usb->set_video_frame_allocator(pbo_allocator2.get());
+ cards[1].usb->configure_card();
+ }
+
+ BMUSBCapture::start_bm_thread();
+
+ for (int card_index = 0; card_index < NUM_CARDS; ++card_index) {
+ cards[card_index].usb->start_bm_capture();
+ }
+
+ 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);
+ }
+
+ //chain->enable_phase_timing(true);
+
+ // Set up stuff for NV12 conversion.
+ resource_pool = chain->get_resource_pool();
+
+ // Cb/Cr shader.
+ string cbcr_vert_shader = read_file("vs-cbcr.130.vert");
+ string cbcr_frag_shader =
+ "#version 130 \n"
+ "in vec2 tc0; \n"
+ "uniform sampler2D cbcr_tex; \n"
+ "void main() { \n"
+ " gl_FragColor = texture2D(cbcr_tex, tc0); \n"
+ "} \n";
+ cbcr_program_num = resource_pool->compile_glsl_program(cbcr_vert_shader, cbcr_frag_shader);
+}
+
+Mixer::~Mixer()
+{
+ resource_pool->release_glsl_program(cbcr_program_num);
+ BMUSBCapture::stop_bm_thread();
+}
+