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| 1 /* | |
| 2 * Copyright 2017 The WebRTC project authors. All Rights Reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #import "RTCNV12TextureCache.h" | |
| 12 | |
| 13 #import "WebRTC/RTCVideoFrame.h" | |
| 14 | |
| 15 @implementation RTCNV12TextureCache { | |
| 16 CVOpenGLESTextureCacheRef _textureCache; | |
| 17 CVOpenGLESTextureRef _yTextureRef; | |
| 18 CVOpenGLESTextureRef _uvTextureRef; | |
| 19 } | |
| 20 | |
| 21 - (GLuint)yTexture { | |
| 22 return CVOpenGLESTextureGetName(_yTextureRef); | |
| 23 } | |
| 24 | |
| 25 - (GLuint)uvTexture { | |
| 26 return CVOpenGLESTextureGetName(_uvTextureRef); | |
| 27 } | |
| 28 | |
| 29 - (instancetype)initWithContext:(EAGLContext *)context { | |
| 30 if (self = [super init]) { | |
| 31 CVReturn ret = CVOpenGLESTextureCacheCreate( | |
| 32 kCFAllocatorDefault, NULL, | |
| 33 #if COREVIDEO_USE_EAGLCONTEXT_CLASS_IN_API | |
| 34 context, | |
| 35 #else | |
| 36 (__bridge void *)context, | |
| 37 #endif | |
| 38 NULL, &_textureCache); | |
| 39 if (ret != kCVReturnSuccess) { | |
| 40 self = nil; | |
| 41 } | |
| 42 } | |
| 43 return self; | |
| 44 } | |
| 45 | |
| 46 - (BOOL)loadTexture:(CVOpenGLESTextureRef *)textureOut | |
| 47 pixelBuffer:(CVPixelBufferRef)pixelBuffer | |
| 48 planeIndex:(int)planeIndex | |
| 49 pixelFormat:(GLenum)pixelFormat { | |
| 50 const int width = CVPixelBufferGetWidthOfPlane(pixelBuffer, planeIndex); | |
| 51 const int height = CVPixelBufferGetHeightOfPlane(pixelBuffer, planeIndex); | |
| 52 | |
| 53 if (*textureOut) { | |
| 54 CFRelease(*textureOut); | |
| 55 *textureOut = nil; | |
| 56 } | |
| 57 CVReturn ret = CVOpenGLESTextureCacheCreateTextureFromImage( | |
| 58 kCFAllocatorDefault, _textureCache, pixelBuffer, NULL, GL_TEXTURE_2D, pixe
lFormat, width, | |
| 59 height, pixelFormat, GL_UNSIGNED_BYTE, planeIndex, textureOut); | |
| 60 if (ret != kCVReturnSuccess) { | |
| 61 CFRelease(*textureOut); | |
| 62 *textureOut = nil; | |
| 63 return NO; | |
| 64 } | |
| 65 NSAssert(CVOpenGLESTextureGetTarget(*textureOut) == GL_TEXTURE_2D, | |
| 66 @"Unexpected GLES texture target"); | |
| 67 glBindTexture(GL_TEXTURE_2D, CVOpenGLESTextureGetName(*textureOut)); | |
| 68 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); | |
| 69 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); | |
| 70 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | |
| 71 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | |
| 72 return YES; | |
| 73 } | |
| 74 | |
| 75 - (BOOL)uploadFrameToTextures:(RTCVideoFrame *)frame { | |
| 76 CVPixelBufferRef pixelBuffer = frame.nativeHandle; | |
| 77 NSParameterAssert(pixelBuffer); | |
| 78 return [self loadTexture:&_yTextureRef | |
| 79 pixelBuffer:pixelBuffer | |
| 80 planeIndex:0 | |
| 81 pixelFormat:GL_LUMINANCE] && | |
| 82 [self loadTexture:&_uvTextureRef | |
| 83 pixelBuffer:pixelBuffer | |
| 84 planeIndex:1 | |
| 85 pixelFormat:GL_LUMINANCE_ALPHA]; | |
| 86 } | |
| 87 | |
| 88 - (void)releaseTextures { | |
| 89 if (_uvTextureRef) { | |
| 90 CFRelease(_uvTextureRef); | |
| 91 _uvTextureRef = nil; | |
| 92 } | |
| 93 if (_yTextureRef) { | |
| 94 CFRelease(_yTextureRef); | |
| 95 _yTextureRef = nil; | |
| 96 } | |
| 97 } | |
| 98 | |
| 99 - (void)dealloc { | |
| 100 [self releaseTextures]; | |
| 101 if (_textureCache) { | |
| 102 CFRelease(_textureCache); | |
| 103 _textureCache = nil; | |
| 104 } | |
| 105 } | |
| 106 | |
| 107 @end | |
| 108 | |
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Chromium Code Reviews
Issue 2862543002:
Split iOS sdk in to separate targets (Closed)
