--- /dev/null
+#include "ycbcr_converter.h"
+
+#include "jpeg_frame.h"
+
+#include <movit/mix_effect.h>
+#include <movit/ycbcr_input.h>
+
+using namespace std;
+using namespace movit;
+
+namespace {
+
+void setup_outputs(YCbCrConverter::OutputMode output_mode, const ImageFormat &output_format, const YCbCrFormat &ycbcr_output_format, EffectChain *chain)
+{
+ if (output_mode == YCbCrConverter::OUTPUT_TO_RGBA) {
+ chain->add_output(output_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
+ chain->set_output_origin(OUTPUT_ORIGIN_BOTTOM_LEFT);
+ } else if (output_mode == YCbCrConverter::OUTPUT_TO_SEMIPLANAR) {
+ chain->add_ycbcr_output(output_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, ycbcr_output_format, YCBCR_OUTPUT_SPLIT_Y_AND_CBCR);
+ chain->set_output_origin(OUTPUT_ORIGIN_TOP_LEFT);
+ } else {
+ assert(output_mode == YCbCrConverter::OUTPUT_TO_DUAL_YCBCR);
+
+ // One full Y'CbCr texture (for interpolation), one that's just Y (throwing away the
+ // Cb and Cr channels). The second copy is sort of redundant, but it's the easiest way
+ // of getting the gray data into a layered texture.
+ chain->add_ycbcr_output(output_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, ycbcr_output_format);
+ chain->add_ycbcr_output(output_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, ycbcr_output_format);
+ chain->set_output_origin(OUTPUT_ORIGIN_TOP_LEFT);
+ }
+}
+
+} // namespace
+
+YCbCrConverter::YCbCrConverter(YCbCrConverter::OutputMode output_mode, ResourcePool *resource_pool)
+{
+ ImageFormat inout_format;
+ inout_format.color_space = COLORSPACE_sRGB;
+ inout_format.gamma_curve = GAMMA_sRGB;
+
+ ycbcr_format.luma_coefficients = YCBCR_REC_709;
+ ycbcr_format.num_levels = 256;
+ ycbcr_format.chroma_subsampling_x = 2;
+ ycbcr_format.chroma_subsampling_y = 1;
+ ycbcr_format.cb_x_position = 0.0f; // H.264 -- _not_ JPEG, even though our input is MJPEG-encoded
+ ycbcr_format.cb_y_position = 0.5f; // Irrelevant.
+ ycbcr_format.cr_x_position = 0.0f;
+ ycbcr_format.cr_y_position = 0.5f;
+
+ // This is a hack. Even though we're sending MJPEG around, which is
+ // full-range, it's mostly transporting signals from limited-range
+ // sources with no conversion, so we ought to have had false here.
+ // However, in the off chance that we're actually getting real MJPEG,
+ // we don't want to crush its blacks (or whites) by clamping. All of
+ // our processing is fades, so if we're in limited-range input, we'll
+ // stay in limited-range output. (Fading between limited-range and
+ // full-range sources will be broken, of course.) There will be some
+ // slight confusion in the parts of the algorithms dealing with RGB,
+ // but they're small and we'll manage.
+ ycbcr_format.full_range = true;
+
+ YCbCrFormat ycbcr_output_format = ycbcr_format;
+ ycbcr_output_format.chroma_subsampling_x = 1;
+
+ // Planar Y'CbCr decoding chain.
+ planar_chain.reset(new EffectChain(1280, 720, resource_pool));
+ ycbcr_planar_input = (YCbCrInput *)planar_chain->add_input(new YCbCrInput(inout_format, ycbcr_format, 1280, 720, YCBCR_INPUT_PLANAR));
+ setup_outputs(output_mode, inout_format, ycbcr_output_format, planar_chain.get());
+ planar_chain->set_dither_bits(8);
+ planar_chain->finalize();
+
+ // Semiplanar Y'CbCr decoding chain (for images coming from VA-API).
+ semiplanar_chain.reset(new EffectChain(1280, 720, resource_pool));
+ ycbcr_semiplanar_input = (YCbCrInput *)semiplanar_chain->add_input(new YCbCrInput(inout_format, ycbcr_format, 1280, 720, YCBCR_INPUT_SPLIT_Y_AND_CBCR));
+ setup_outputs(output_mode, inout_format, ycbcr_output_format, semiplanar_chain.get());
+ semiplanar_chain->set_dither_bits(8);
+ semiplanar_chain->finalize();
+
+ // Fade chains.
+ for (bool first_input_is_semiplanar : { false, true }) {
+ for (bool second_input_is_semiplanar : { false, true }) {
+ FadeChain &fade_chain = fade_chains[first_input_is_semiplanar][second_input_is_semiplanar];
+ fade_chain.chain.reset(new EffectChain(1280, 720, resource_pool));
+ fade_chain.input[0] = (movit::YCbCrInput *)fade_chain.chain->add_input(
+ new YCbCrInput(inout_format, ycbcr_format, 1280, 720,
+ first_input_is_semiplanar ? YCBCR_INPUT_SPLIT_Y_AND_CBCR : YCBCR_INPUT_PLANAR));
+ fade_chain.input[1] = (movit::YCbCrInput *)fade_chain.chain->add_input(
+ new YCbCrInput(inout_format, ycbcr_format, 1280, 720,
+ second_input_is_semiplanar ? YCBCR_INPUT_SPLIT_Y_AND_CBCR : YCBCR_INPUT_PLANAR));
+ fade_chain.mix_effect = (movit::MixEffect *)fade_chain.chain->add_effect(
+ new MixEffect, fade_chain.input[0], fade_chain.input[1]);
+ setup_outputs(output_mode, inout_format, ycbcr_output_format, fade_chain.chain.get());
+ fade_chain.chain->set_dither_bits(8);
+ fade_chain.chain->finalize();
+ }
+ }
+
+ // Fade from interleaved chain (ie., first input is interleaved, since it comes
+ // directly from the GPU anyway).
+ for (bool second_input_is_semiplanar : { false, true }) {
+ FadeChain &fade_chain = interleaved_fade_chains[second_input_is_semiplanar];
+ fade_chain.chain.reset(new EffectChain(1280, 720, resource_pool));
+
+ ycbcr_format.chroma_subsampling_x = 1;
+ fade_chain.input[0] = (movit::YCbCrInput *)fade_chain.chain->add_input(
+ new YCbCrInput(inout_format, ycbcr_format, 1280, 720,
+ YCBCR_INPUT_INTERLEAVED));
+
+ ycbcr_format.chroma_subsampling_x = 2;
+ fade_chain.input[1] = (movit::YCbCrInput *)fade_chain.chain->add_input(
+ new YCbCrInput(inout_format, ycbcr_format, 1280, 720,
+ second_input_is_semiplanar ? YCBCR_INPUT_SPLIT_Y_AND_CBCR : YCBCR_INPUT_PLANAR));
+
+ fade_chain.mix_effect = (movit::MixEffect *)fade_chain.chain->add_effect(
+ new MixEffect, fade_chain.input[0], fade_chain.input[1]);
+ setup_outputs(output_mode, inout_format, ycbcr_output_format, fade_chain.chain.get());
+ fade_chain.chain->set_dither_bits(8);
+ fade_chain.chain->finalize();
+ }
+}
+
+EffectChain *YCbCrConverter::prepare_chain_for_conversion(shared_ptr<Frame> frame)
+{
+ if (frame->is_semiplanar) {
+ setup_input_for_frame(frame, ycbcr_format, ycbcr_semiplanar_input);
+ return semiplanar_chain.get();
+ } else {
+ setup_input_for_frame(frame, ycbcr_format, ycbcr_planar_input);
+ return planar_chain.get();
+ }
+}
+
+EffectChain *YCbCrConverter::prepare_chain_for_fade(shared_ptr<Frame> frame, shared_ptr<Frame> secondary_frame, float fade_alpha)
+{
+ const FadeChain &fade_chain = fade_chains[frame->is_semiplanar][secondary_frame->is_semiplanar];
+ setup_input_for_frame(frame, ycbcr_format, fade_chain.input[0]);
+ setup_input_for_frame(secondary_frame, ycbcr_format, fade_chain.input[1]);
+ bool ok = fade_chain.mix_effect->set_float("strength_first", 1.0f - fade_alpha);
+ ok |= fade_chain.mix_effect->set_float("strength_second", fade_alpha);
+ assert(ok);
+ return fade_chain.chain.get();
+}
+
+EffectChain *YCbCrConverter::prepare_chain_for_fade_from_texture(GLuint tex, std::shared_ptr<Frame> secondary_frame, float fade_alpha)
+{
+ const FadeChain &fade_chain = interleaved_fade_chains[secondary_frame->is_semiplanar];
+ {
+ YCbCrFormat format_copy = ycbcr_format;
+ format_copy.chroma_subsampling_x = 1;
+ format_copy.chroma_subsampling_y = 1;
+ fade_chain.input[0]->change_ycbcr_format(format_copy);
+
+ fade_chain.input[0]->set_width(1280); // FIXME
+ fade_chain.input[0]->set_height(720);
+ fade_chain.input[0]->set_texture_num(0, tex);
+
+ glTextureParameteri(tex, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTextureParameteri(tex, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glTextureParameteri(tex, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
+ glTextureParameteri(tex, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
+ }
+ setup_input_for_frame(secondary_frame, ycbcr_format, fade_chain.input[1]);
+ bool ok = fade_chain.mix_effect->set_float("strength_first", 1.0f - fade_alpha);
+ ok |= fade_chain.mix_effect->set_float("strength_second", fade_alpha);
+ assert(ok);
+ return fade_chain.chain.get();
+}
+
+void setup_input_for_frame(shared_ptr<Frame> frame, const YCbCrFormat &ycbcr_format, YCbCrInput *input)
+{
+ YCbCrFormat format_copy = ycbcr_format;
+ format_copy.chroma_subsampling_x = frame->chroma_subsampling_x;
+ format_copy.chroma_subsampling_y = frame->chroma_subsampling_y;
+ input->change_ycbcr_format(format_copy);
+
+ input->set_width(frame->width);
+ input->set_height(frame->height);
+ input->set_pixel_data(0, frame->y.get());
+ input->set_pitch(0, frame->pitch_y);
+ if (frame->is_semiplanar) {
+ input->set_pixel_data(1, frame->cbcr.get());
+ input->set_pitch(1, frame->pitch_chroma);
+ } else {
+ input->set_pixel_data(1, frame->cb.get());
+ input->set_pixel_data(2, frame->cr.get());
+ input->set_pitch(1, frame->pitch_chroma);
+ input->set_pitch(2, frame->pitch_chroma);
+ }
+}
projects / nageru / blobdiff