1 #include "ycbcr_converter.h"
3 #include "jpeg_frame.h"
5 #include <movit/mix_effect.h>
6 #include <movit/ycbcr_input.h>
13 void setup_outputs(YCbCrConverter::OutputMode output_mode, const ImageFormat &output_format, const YCbCrFormat &ycbcr_output_format, EffectChain *chain)
15 if (output_mode == YCbCrConverter::OUTPUT_TO_RGBA) {
16 chain->add_output(output_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
17 chain->set_output_origin(OUTPUT_ORIGIN_BOTTOM_LEFT);
18 } else if (output_mode == YCbCrConverter::OUTPUT_TO_SEMIPLANAR) {
19 chain->add_ycbcr_output(output_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, ycbcr_output_format, YCBCR_OUTPUT_SPLIT_Y_AND_CBCR);
20 chain->set_output_origin(OUTPUT_ORIGIN_TOP_LEFT);
22 assert(output_mode == YCbCrConverter::OUTPUT_TO_DUAL_YCBCR);
24 // One full Y'CbCr texture (for interpolation), one that's just Y (throwing away the
25 // Cb and Cr channels). The second copy is sort of redundant, but it's the easiest way
26 // of getting the gray data into a layered texture.
27 chain->add_ycbcr_output(output_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, ycbcr_output_format);
28 chain->add_ycbcr_output(output_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, ycbcr_output_format);
29 chain->set_output_origin(OUTPUT_ORIGIN_TOP_LEFT);
35 YCbCrConverter::YCbCrConverter(YCbCrConverter::OutputMode output_mode, ResourcePool *resource_pool)
37 ImageFormat inout_format;
38 inout_format.color_space = COLORSPACE_sRGB;
39 inout_format.gamma_curve = GAMMA_sRGB;
41 ycbcr_format.luma_coefficients = YCBCR_REC_709;
42 ycbcr_format.full_range = false;
43 ycbcr_format.num_levels = 256;
44 ycbcr_format.chroma_subsampling_x = 2;
45 ycbcr_format.chroma_subsampling_y = 1;
46 ycbcr_format.cb_x_position = 0.0f; // H.264 -- _not_ JPEG, even though our input is MJPEG-encoded
47 ycbcr_format.cb_y_position = 0.5f; // Irrelevant.
48 ycbcr_format.cr_x_position = 0.0f;
49 ycbcr_format.cr_y_position = 0.5f;
51 YCbCrFormat ycbcr_output_format = ycbcr_format;
52 ycbcr_output_format.chroma_subsampling_x = 1;
54 // Planar Y'CbCr decoding chain.
55 planar_chain.reset(new EffectChain(1280, 720, resource_pool));
56 ycbcr_planar_input = (YCbCrInput *)planar_chain->add_input(new YCbCrInput(inout_format, ycbcr_format, 1280, 720, YCBCR_INPUT_PLANAR));
57 setup_outputs(output_mode, inout_format, ycbcr_output_format, planar_chain.get());
58 planar_chain->set_dither_bits(8);
59 planar_chain->finalize();
61 // Semiplanar Y'CbCr decoding chain (for images coming from VA-API).
62 semiplanar_chain.reset(new EffectChain(1280, 720, resource_pool));
63 ycbcr_semiplanar_input = (YCbCrInput *)semiplanar_chain->add_input(new YCbCrInput(inout_format, ycbcr_format, 1280, 720, YCBCR_INPUT_SPLIT_Y_AND_CBCR));
64 setup_outputs(output_mode, inout_format, ycbcr_output_format, semiplanar_chain.get());
65 semiplanar_chain->set_dither_bits(8);
66 semiplanar_chain->finalize();
69 for (bool first_input_is_semiplanar : { false, true }) {
70 for (bool second_input_is_semiplanar : { false, true }) {
71 FadeChain &fade_chain = fade_chains[first_input_is_semiplanar][second_input_is_semiplanar];
72 fade_chain.chain.reset(new EffectChain(1280, 720, resource_pool));
73 fade_chain.input[0] = (movit::YCbCrInput *)fade_chain.chain->add_input(
74 new YCbCrInput(inout_format, ycbcr_format, 1280, 720,
75 first_input_is_semiplanar ? YCBCR_INPUT_SPLIT_Y_AND_CBCR : YCBCR_INPUT_PLANAR));
76 fade_chain.input[1] = (movit::YCbCrInput *)fade_chain.chain->add_input(
77 new YCbCrInput(inout_format, ycbcr_format, 1280, 720,
78 second_input_is_semiplanar ? YCBCR_INPUT_SPLIT_Y_AND_CBCR : YCBCR_INPUT_PLANAR));
79 fade_chain.mix_effect = (movit::MixEffect *)fade_chain.chain->add_effect(
80 new MixEffect, fade_chain.input[0], fade_chain.input[1]);
81 setup_outputs(output_mode, inout_format, ycbcr_output_format, fade_chain.chain.get());
82 fade_chain.chain->set_dither_bits(8);
83 fade_chain.chain->finalize();
87 // Fade from interleaved chain (ie., first input is interleaved, since it comes
88 // directly from the GPU anyway).
89 for (bool second_input_is_semiplanar : { false, true }) {
90 FadeChain &fade_chain = interleaved_fade_chains[second_input_is_semiplanar];
91 fade_chain.chain.reset(new EffectChain(1280, 720, resource_pool));
93 ycbcr_format.chroma_subsampling_x = 1;
94 fade_chain.input[0] = (movit::YCbCrInput *)fade_chain.chain->add_input(
95 new YCbCrInput(inout_format, ycbcr_format, 1280, 720,
96 YCBCR_INPUT_INTERLEAVED));
98 ycbcr_format.chroma_subsampling_x = 2;
99 fade_chain.input[1] = (movit::YCbCrInput *)fade_chain.chain->add_input(
100 new YCbCrInput(inout_format, ycbcr_format, 1280, 720,
101 second_input_is_semiplanar ? YCBCR_INPUT_SPLIT_Y_AND_CBCR : YCBCR_INPUT_PLANAR));
103 fade_chain.mix_effect = (movit::MixEffect *)fade_chain.chain->add_effect(
104 new MixEffect, fade_chain.input[0], fade_chain.input[1]);
105 setup_outputs(output_mode, inout_format, ycbcr_output_format, fade_chain.chain.get());
106 fade_chain.chain->set_dither_bits(8);
107 fade_chain.chain->finalize();
111 EffectChain *YCbCrConverter::prepare_chain_for_conversion(shared_ptr<Frame> frame)
113 if (frame->is_semiplanar) {
114 setup_input_for_frame(frame, ycbcr_format, ycbcr_semiplanar_input);
115 return semiplanar_chain.get();
117 setup_input_for_frame(frame, ycbcr_format, ycbcr_planar_input);
118 return planar_chain.get();
122 EffectChain *YCbCrConverter::prepare_chain_for_fade(shared_ptr<Frame> frame, shared_ptr<Frame> secondary_frame, float fade_alpha)
124 const FadeChain &fade_chain = fade_chains[frame->is_semiplanar][secondary_frame->is_semiplanar];
125 setup_input_for_frame(frame, ycbcr_format, fade_chain.input[0]);
126 setup_input_for_frame(secondary_frame, ycbcr_format, fade_chain.input[1]);
127 bool ok = fade_chain.mix_effect->set_float("strength_first", 1.0f - fade_alpha);
128 ok |= fade_chain.mix_effect->set_float("strength_second", fade_alpha);
130 return fade_chain.chain.get();
133 EffectChain *YCbCrConverter::prepare_chain_for_fade_from_texture(GLuint tex, std::shared_ptr<Frame> secondary_frame, float fade_alpha)
135 const FadeChain &fade_chain = interleaved_fade_chains[secondary_frame->is_semiplanar];
137 YCbCrFormat format_copy = ycbcr_format;
138 format_copy.chroma_subsampling_x = 1;
139 format_copy.chroma_subsampling_y = 1;
140 fade_chain.input[0]->change_ycbcr_format(format_copy);
142 fade_chain.input[0]->set_width(1280); // FIXME
143 fade_chain.input[0]->set_height(720);
144 fade_chain.input[0]->set_texture_num(0, tex);
146 glTextureParameteri(tex, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
147 glTextureParameteri(tex, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
148 glTextureParameteri(tex, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
149 glTextureParameteri(tex, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
151 setup_input_for_frame(secondary_frame, ycbcr_format, fade_chain.input[1]);
152 bool ok = fade_chain.mix_effect->set_float("strength_first", 1.0f - fade_alpha);
153 ok |= fade_chain.mix_effect->set_float("strength_second", fade_alpha);
155 return fade_chain.chain.get();
158 void setup_input_for_frame(shared_ptr<Frame> frame, const YCbCrFormat &ycbcr_format, YCbCrInput *input)
160 YCbCrFormat format_copy = ycbcr_format;
161 format_copy.chroma_subsampling_x = frame->chroma_subsampling_x;
162 format_copy.chroma_subsampling_y = frame->chroma_subsampling_y;
163 input->change_ycbcr_format(format_copy);
165 input->set_width(frame->width);
166 input->set_height(frame->height);
167 input->set_pixel_data(0, frame->y.get());
168 input->set_pitch(0, frame->pitch_y);
169 if (frame->is_semiplanar) {
170 input->set_pixel_data(1, frame->cbcr.get());
171 input->set_pitch(1, frame->pitch_chroma);
173 input->set_pixel_data(1, frame->cb.get());
174 input->set_pixel_data(2, frame->cr.get());
175 input->set_pitch(1, frame->pitch_chroma);
176 input->set_pitch(2, frame->pitch_chroma);