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Fix OpenGL rendering of WebRTCDemo by accounting for stride != width.

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BUG=998

Review URL: https://webrtc-codereview.appspot.com/936021

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3079 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
fischman@webrtc.org 2012-11-12 16:39:25 +00:00
parent af49062a35
commit b900721472
1 changed files with 32 additions and 19 deletions
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51
webrtc/modules/video_render/android/video_render_opengles20.cc
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@ -383,33 +383,46 @@ void VideoRenderOpenGles20::SetupTextures(const I420VideoFrame& frameToRender) {
_textureHeight = height;
}
// Uploads a plane of pixel data, accounting for stride != width*bpp.
static void GlTexSubImage2D(GLsizei width, GLsizei height, int stride,
const uint8_t* plane) {
if (stride == width) {
// Yay! We can upload the entire plane in a single GL call.
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, GL_LUMINANCE,
GL_UNSIGNED_BYTE,
static_cast<const GLvoid*>(plane));
} else {
// Boo! Since GLES2 doesn't have GL_UNPACK_ROW_LENGTH and Android doesn't
// have GL_EXT_unpack_subimage we have to upload a row at a time. Ick.
for (int row = 0; row < height; ++row) {
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, row, width, 1, GL_LUMINANCE,
GL_UNSIGNED_BYTE,
static_cast<const GLvoid*>(plane + (row * stride)));
}
}
}
void VideoRenderOpenGles20::UpdateTextures(const
I420VideoFrame& frameToRender) {
const GLsizei width = frameToRender.width();
const GLsizei height = frameToRender.height();
GLuint currentTextureId = _textureIds[0]; // Y
glActiveTexture( GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, currentTextureId);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, GL_LUMINANCE,
GL_UNSIGNED_BYTE,
(const GLvoid*) frameToRender.buffer(kYPlane));
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, _textureIds[0]);
GlTexSubImage2D(width, height, frameToRender.stride(kYPlane),
frameToRender.buffer(kYPlane));
currentTextureId = _textureIds[1]; // U
glActiveTexture( GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, currentTextureId);
const WebRtc_UWord8* uComponent = frameToRender.buffer(kUPlane);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width / 2, height / 2,
GL_LUMINANCE, GL_UNSIGNED_BYTE, (const GLvoid*) uComponent);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, _textureIds[1]);
GlTexSubImage2D(width / 2, height / 2, frameToRender.stride(kUPlane),
frameToRender.buffer(kUPlane));
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, _textureIds[2]);
GlTexSubImage2D(width / 2, height / 2, frameToRender.stride(kVPlane),
frameToRender.buffer(kVPlane));
currentTextureId = _textureIds[2]; // V
glActiveTexture( GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, currentTextureId);
const WebRtc_UWord8* vComponent = frameToRender.buffer(kVPlane);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width / 2, height / 2,
GL_LUMINANCE, GL_UNSIGNED_BYTE, (const GLvoid*) vComponent);
checkGlError("UpdateTextures");
}
} // namespace webrtc