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/*
* Copyright (C) 2009, 2019, 2020 Igalia S.L
* Copyright (C) 2015, 2019 Metrological Group B.V.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* aint with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#if ENABLE(VIDEO) && USE(GSTREAMER) && USE(TEXTURE_MAPPER_GL)
#include "GStreamerVideoFrameHolder.h"
#include "BitmapTextureGL.h"
#include "BitmapTexturePool.h"
#include "TextureMapperContextAttributes.h"
#include "TextureMapperGL.h"
namespace WebCore {
GstVideoFrameHolder::GstVideoFrameHolder(GstSample* sample, std::optional<GstVideoDecoderPlatform> videoDecoderPlatform, TextureMapperGL::Flags flags, bool gstGLEnabled)
: m_videoDecoderPlatform(videoDecoderPlatform)
{
RELEASE_ASSERT(GST_IS_SAMPLE(sample));
GstVideoInfo videoInfo;
if (UNLIKELY(!getSampleVideoInfo(sample, videoInfo)))
return;
m_size = IntSize(GST_VIDEO_INFO_WIDTH(&videoInfo), GST_VIDEO_INFO_HEIGHT(&videoInfo));
m_hasAlphaChannel = GST_VIDEO_INFO_HAS_ALPHA(&videoInfo);
m_buffer = gst_sample_get_buffer(sample);
if (UNLIKELY(!GST_IS_BUFFER(m_buffer.get())))
return;
#if USE(GSTREAMER_GL)
m_flags = flags | (m_hasAlphaChannel ? TextureMapperGL::ShouldBlend | TextureMapperGL::ShouldPremultiply : 0);
GstMemory* memory = gst_buffer_peek_memory(m_buffer.get(), 0);
if (gst_is_gl_memory(memory))
m_textureTarget = gst_gl_memory_get_texture_target(GST_GL_MEMORY_CAST(memory));
if (gstGLEnabled) {
m_isMapped = gst_video_frame_map(&m_videoFrame, &videoInfo, m_buffer.get(), static_cast<GstMapFlags>(GST_MAP_READ | GST_MAP_GL));
if (m_isMapped) {
m_textureID = *reinterpret_cast<GLuint*>(m_videoFrame.data[0]);
m_hasMappedTextures = true;
}
} else
#else
UNUSED_PARAM(flags);
UNUSED_PARAM(gstGLEnabled);
#endif // USE(GSTREAMER_GL)
{
m_textureID = 0;
m_isMapped = gst_video_frame_map(&m_videoFrame, &videoInfo, m_buffer.get(), GST_MAP_READ);
if (m_isMapped) {
// Right now the TextureMapper only supports chromas with one plane.
ASSERT(GST_VIDEO_INFO_N_PLANES(&videoInfo) == 1);
}
}
}
GstVideoFrameHolder::~GstVideoFrameHolder()
{
if (UNLIKELY(!m_isMapped))
return;
gst_video_frame_unmap(&m_videoFrame);
}
#if USE(GSTREAMER_GL)
void GstVideoFrameHolder::waitForCPUSync()
{
// No need for OpenGL synchronization when using the OpenMAX decoder.
if (m_videoDecoderPlatform == GstVideoDecoderPlatform::OpenMAX)
return;
GstGLSyncMeta* meta = gst_buffer_get_gl_sync_meta(m_buffer.get());
if (meta) {
GstMemory* mem = gst_buffer_peek_memory(m_buffer.get(), 0);
GstGLContext* context = ((GstGLBaseMemory*)mem)->context;
gst_gl_sync_meta_wait_cpu(meta, context);
}
}
#endif // USE(GSTREAMER_GL)
void GstVideoFrameHolder::updateTexture(BitmapTextureGL& texture)
{
ASSERT(!m_textureID);
GstVideoGLTextureUploadMeta* meta;
if (m_buffer && (meta = gst_buffer_get_video_gl_texture_upload_meta(m_buffer.get()))) {
if (meta->n_textures == 1) { // BRGx & BGRA formats use only one texture.
guint ids[4] = { texture.id(), 0, 0, 0 };
if (gst_video_gl_texture_upload_meta_upload(meta, ids))
return;
}
}
if (!m_isMapped)
return;
int stride = GST_VIDEO_FRAME_PLANE_STRIDE(&m_videoFrame, 0);
const void* srcData = GST_VIDEO_FRAME_PLANE_DATA(&m_videoFrame, 0);
if (!srcData)
return;
texture.updateContents(srcData, WebCore::IntRect(0, 0, m_size.width(), m_size.height()), WebCore::IntPoint(0, 0), stride);
}
std::unique_ptr<TextureMapperPlatformLayerBuffer> GstVideoFrameHolder::platformLayerBuffer()
{
if (!m_hasMappedTextures)
return nullptr;
using Buffer = TextureMapperPlatformLayerBuffer;
#if USE(GSTREAMER_GL)
if (m_textureTarget == GST_GL_TEXTURE_TARGET_EXTERNAL_OES)
return makeUnique<Buffer>(Buffer::TextureVariant { Buffer::ExternalOESTexture { m_textureID } }, m_size, m_flags, GL_DONT_CARE);
#endif
if ((GST_VIDEO_INFO_IS_RGB(&m_videoFrame.info) && GST_VIDEO_INFO_N_PLANES(&m_videoFrame.info) == 1))
return makeUnique<Buffer>(Buffer::TextureVariant { Buffer::RGBTexture { m_textureID } }, m_size, m_flags, GL_RGBA);
if (GST_VIDEO_INFO_IS_YUV(&m_videoFrame.info)) {
if (GST_VIDEO_INFO_N_COMPONENTS(&m_videoFrame.info) < 3 || GST_VIDEO_INFO_N_PLANES(&m_videoFrame.info) > 4)
return nullptr;
if (m_videoDecoderPlatform && *m_videoDecoderPlatform == GstVideoDecoderPlatform::ImxVPU) {
// IMX VPU decoder decodes YUV data only into the Y texture from which the sampler
// then directly produces RGBA data. Textures for other planes aren't used, but
// that's decoder's problem. We have to treat that Y texture as having RGBA data.
return makeUnique<Buffer>(Buffer::TextureVariant { Buffer::RGBTexture { m_textureID } }, m_size, m_flags, GL_RGBA);
}
unsigned numberOfPlanes = GST_VIDEO_INFO_N_PLANES(&m_videoFrame.info);
std::array<GLuint, 4> planes;
std::array<unsigned, 4> yuvPlane;
std::array<unsigned, 4> yuvPlaneOffset;
for (unsigned i = 0; i < numberOfPlanes; ++i)
planes[i] = *static_cast<GLuint*>(m_videoFrame.data[i]);
for (unsigned i = 0; i < numberOfPlanes; ++i) {
yuvPlane[i] = GST_VIDEO_INFO_COMP_PLANE(&m_videoFrame.info, i);
yuvPlaneOffset[i] = GST_VIDEO_INFO_COMP_POFFSET(&m_videoFrame.info, i);
}
std::array<GLfloat, 16> yuvToRgb;
if (gst_video_colorimetry_matches(&GST_VIDEO_INFO_COLORIMETRY(&m_videoFrame.info), GST_VIDEO_COLORIMETRY_BT709)) {
yuvToRgb = {
1.164383561643836f, -0.0f, 1.792741071428571f, -0.972945075016308f,
1.164383561643836f, -0.213248614273739f, -0.532909328559444f, 0.301482665475862f,
1.164383561643836f, 2.112401785714286f, -0.0f, -1.133402217873451f,
0.0f, 0.0f, 0.0f, 1.0f,
};
} else {
// Default to bt601. This is the same behaviour as GStreamer's glcolorconvert element.
yuvToRgb = {
1.164383561643836f, 0.0f, 1.596026785714286f, -0.874202217873451f,
1.164383561643836f, -0.391762290094914f, -0.812967647237771f, 0.531667823499146f,
1.164383561643836f, 2.017232142857143f, -0.0f, -1.085630789302022f,
0.0f, 0.0f, 0.0f, 1.0f,
};
}
return makeUnique<Buffer>(Buffer::TextureVariant { Buffer::YUVTexture { numberOfPlanes, planes, yuvPlane, yuvPlaneOffset, yuvToRgb } }, m_size, m_flags, GL_RGBA);
}
return nullptr;
}
}
#endif
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