247 lines
8.3 KiB
C++
247 lines
8.3 KiB
C++
// Copyright 2019 The MediaPipe Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "mediapipe/gpu/gpu_buffer_format.h"
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#include "absl/container/flat_hash_map.h"
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#include "mediapipe/framework/deps/no_destructor.h"
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#include "mediapipe/framework/port/logging.h"
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namespace mediapipe {
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#ifndef GL_RGBA16F
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#define GL_RGBA16F 34842
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#endif // GL_RGBA16F
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#ifndef GL_HALF_FLOAT
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#define GL_HALF_FLOAT 0x140B
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#endif // GL_HALF_FLOAT
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#if !MEDIAPIPE_DISABLE_GPU
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#ifdef GL_ES_VERSION_2_0
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static void AdaptGlTextureInfoForGLES2(GlTextureInfo* info) {
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switch (info->gl_internal_format) {
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case GL_R16F:
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case GL_R32F:
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// Should this be GL_RED_EXT instead?
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info->gl_internal_format = info->gl_format = GL_LUMINANCE;
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return;
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case GL_RG16F:
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case GL_RG32F:
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// Should this be GL_RG_EXT instead?
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info->gl_internal_format = info->gl_format = GL_LUMINANCE_ALPHA;
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return;
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case GL_R8:
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info->gl_internal_format = info->gl_format = GL_RED_EXT;
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return;
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case GL_RG8:
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info->gl_internal_format = info->gl_format = GL_RG_EXT;
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return;
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default:
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return;
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}
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}
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#endif // GL_ES_VERSION_2_0
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const GlTextureInfo& GlTextureInfoForGpuBufferFormat(GpuBufferFormat format,
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int plane,
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GlVersion gl_version) {
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// TODO: check/add more cases using info from
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// CVPixelFormatDescriptionCreateWithPixelFormatType.
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static const mediapipe::NoDestructor<
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absl::flat_hash_map<GpuBufferFormat, std::vector<GlTextureInfo>>>
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gles3_format_info{{
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{GpuBufferFormat::kBGRA32,
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{
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// internal_format, format, type, downscale
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#if MEDIAPIPE_GPU_BUFFER_USE_CV_PIXEL_BUFFER
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// On Apple platforms, we have different code paths for iOS
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// (using CVPixelBuffer) and on macOS (using GlTextureBuffer).
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// When using CVPixelBuffer, the preferred transfer format is
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// BGRA.
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// TODO: Check iOS simulator.
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{GL_RGBA, GL_BGRA, GL_UNSIGNED_BYTE, 1},
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#else
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{GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE, 1},
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#endif // MEDIAPIPE_GPU_BUFFER_USE_CV_PIXEL_BUFFER
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}},
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{GpuBufferFormat::kOneComponent8,
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{
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// This format is like RGBA grayscale: GL_LUMINANCE replicates
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// the single channel texel values to RGB channels, and set alpha
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// to 1.0. If it is desired to see only the texel values in the R
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// channel, use kOneComponent8Red instead.
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#if !TARGET_OS_OSX
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{GL_LUMINANCE, GL_LUMINANCE, GL_UNSIGNED_BYTE, 1},
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#else
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{GL_R8, GL_RED, GL_UNSIGNED_BYTE, 1},
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#endif // TARGET_OS_OSX
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}},
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{GpuBufferFormat::kOneComponent8Red,
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{
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{GL_R8, GL_RED, GL_UNSIGNED_BYTE, 1},
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}},
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{GpuBufferFormat::kTwoComponent8,
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{
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{GL_RG8, GL_RG, GL_UNSIGNED_BYTE, 1},
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}},
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#ifdef __APPLE__
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// TODO: figure out GL_RED_EXT etc. on Android.
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{GpuBufferFormat::kBiPlanar420YpCbCr8VideoRange,
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{
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// Apple's documentation suggests GL_LUMINANCE and
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// GL_LUMINANCE_ALPHA,
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// but since they are deprecated in later versions of OpenGL, we
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// use
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// GL_RED and GL_RG. On GLES2 we can use GL_RED_EXT and GL_RG_EXT
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// instead, though we are not sure if it may cause compatibility
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// problems
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// with very old devices.
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{GL_R8, GL_RED, GL_UNSIGNED_BYTE, 1},
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{GL_RG8, GL_RG, GL_UNSIGNED_BYTE, 2},
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}},
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{GpuBufferFormat::kBiPlanar420YpCbCr8FullRange,
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{
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{GL_R8, GL_RED, GL_UNSIGNED_BYTE, 1},
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{GL_RG8, GL_RG, GL_UNSIGNED_BYTE, 2},
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}},
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#endif // __APPLE__
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{GpuBufferFormat::kTwoComponentHalf16,
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{
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// TODO: use GL_HALF_FLOAT_OES on GLES2?
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{GL_RG16F, GL_RG, GL_HALF_FLOAT, 1},
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}},
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{GpuBufferFormat::kTwoComponentFloat32,
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{
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{GL_RG32F, GL_RG, GL_FLOAT, 1},
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}},
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{GpuBufferFormat::kGrayHalf16,
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{
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{GL_R16F, GL_RED, GL_HALF_FLOAT, 1},
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}},
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{GpuBufferFormat::kGrayFloat32,
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{
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{GL_R32F, GL_RED, GL_FLOAT, 1},
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}},
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{GpuBufferFormat::kRGB24,
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{
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{GL_RGB, GL_RGB, GL_UNSIGNED_BYTE, 1},
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}},
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{GpuBufferFormat::kRGBAHalf64,
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{
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{GL_RGBA16F, GL_RGBA, GL_HALF_FLOAT, 1},
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}},
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{GpuBufferFormat::kRGBAFloat128,
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{
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{GL_RGBA32F, GL_RGBA, GL_FLOAT, 1},
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}},
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}};
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static const auto* gles2_format_info = ([] {
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auto formats =
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new absl::flat_hash_map<GpuBufferFormat, std::vector<GlTextureInfo>>(
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*gles3_format_info);
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#ifdef GL_ES_VERSION_2_0
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for (auto& format_planes : *formats) {
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for (auto& info : format_planes.second) {
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AdaptGlTextureInfoForGLES2(&info);
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}
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}
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#endif // GL_ES_VERSION_2_0
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return formats;
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})();
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auto* format_info = gles3_format_info.get();
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switch (gl_version) {
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case GlVersion::kGLES2:
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format_info = gles2_format_info;
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break;
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case GlVersion::kGLES3:
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case GlVersion::kGL:
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break;
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}
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auto iter = format_info->find(format);
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CHECK(iter != format_info->end())
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<< "unsupported format: "
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<< static_cast<std::underlying_type_t<decltype(format)>>(format);
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const auto& planes = iter->second;
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#ifndef __APPLE__
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CHECK_EQ(planes.size(), 1)
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<< "multiplanar formats are not supported on this platform";
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#endif
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CHECK_GE(plane, 0) << "invalid plane number";
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CHECK_LT(plane, planes.size()) << "invalid plane number";
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return planes[plane];
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}
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#endif // MEDIAPIPE_DISABLE_GPU
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ImageFormat::Format ImageFormatForGpuBufferFormat(GpuBufferFormat format) {
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switch (format) {
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case GpuBufferFormat::kBGRA32:
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// TODO: verify we are handling order of channels correctly.
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return ImageFormat::SRGBA;
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case GpuBufferFormat::kGrayFloat32:
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return ImageFormat::VEC32F1;
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case GpuBufferFormat::kOneComponent8:
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return ImageFormat::GRAY8;
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case GpuBufferFormat::kBiPlanar420YpCbCr8VideoRange:
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case GpuBufferFormat::kBiPlanar420YpCbCr8FullRange:
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// TODO: should either of these be YCBCR420P10?
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return ImageFormat::YCBCR420P;
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case GpuBufferFormat::kRGB24:
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return ImageFormat::SRGB;
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case GpuBufferFormat::kTwoComponentFloat32:
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return ImageFormat::VEC32F2;
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case GpuBufferFormat::kRGBA32:
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// TODO: this likely maps to ImageFormat::SRGBA
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case GpuBufferFormat::kGrayHalf16:
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case GpuBufferFormat::kOneComponent8Red:
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case GpuBufferFormat::kTwoComponent8:
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case GpuBufferFormat::kTwoComponentHalf16:
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case GpuBufferFormat::kRGBAHalf64:
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case GpuBufferFormat::kRGBAFloat128:
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case GpuBufferFormat::kNV12:
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case GpuBufferFormat::kNV21:
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case GpuBufferFormat::kI420:
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case GpuBufferFormat::kYV12:
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case GpuBufferFormat::kUnknown:
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return ImageFormat::UNKNOWN;
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}
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}
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GpuBufferFormat GpuBufferFormatForImageFormat(ImageFormat::Format format) {
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switch (format) {
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case ImageFormat::SRGB:
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return GpuBufferFormat::kRGB24;
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case ImageFormat::SRGBA:
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// TODO: verify we are handling order of channels correctly.
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return GpuBufferFormat::kBGRA32;
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case ImageFormat::VEC32F1:
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return GpuBufferFormat::kGrayFloat32;
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case ImageFormat::VEC32F2:
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return GpuBufferFormat::kTwoComponentFloat32;
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case ImageFormat::GRAY8:
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return GpuBufferFormat::kOneComponent8;
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case ImageFormat::YCBCR420P:
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// TODO: or video range?
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return GpuBufferFormat::kBiPlanar420YpCbCr8FullRange;
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case ImageFormat::UNKNOWN:
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default:
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return GpuBufferFormat::kUnknown;
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}
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}
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} // namespace mediapipe
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