Revert of Add metal view, shaders and renderer. (patchset #18 id:340001 of https://codereview.webrtc.org/2651743007/ )
Reason for revert:
Reverting due to breakage in the Google3 import
Original issue's description:
> Add metal view, shaders and renderer.
>
> This CL submits standalone Metal view, renderer and shader.
>
> BUG=webrtc:7079
>
> Review-Url: https://codereview.webrtc.org/2651743007
> Cr-Commit-Position: refs/heads/master@{#16787}
> Committed: fc8c97f950
TBR=magjed@webrtc.org,kthelgason@webrtc.org,tkchin@webrtc.org,haysc@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:7079
Review-Url: https://codereview.webrtc.org/2711003004
Cr-Commit-Position: refs/heads/master@{#16788}
This commit is contained in:
@ -67,22 +67,7 @@ if (is_ios || is_mac) {
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"objc/Framework/Headers/WebRTC/RTCCameraPreviewView.h",
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"objc/Framework/Headers/WebRTC/RTCCameraPreviewView.h",
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"objc/Framework/Headers/WebRTC/UIDevice+RTCDevice.h",
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"objc/Framework/Headers/WebRTC/UIDevice+RTCDevice.h",
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]
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]
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if (current_cpu == "arm64") {
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sources += [
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"objc/Framework/Classes/Metal/RTCMTLNV12Renderer.h",
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"objc/Framework/Classes/Metal/RTCMTLNV12Renderer.mm",
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"objc/Framework/Classes/Metal/RTCMTLVideoView.m",
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]
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}
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libs = [ "AVFoundation.framework" ]
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libs = [ "AVFoundation.framework" ]
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if (current_cpu == "arm64") {
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libs += [
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"CoreVideo.framework",
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"Metal.framework",
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"MetalKit.framework",
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]
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}
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}
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}
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if (!build_with_chromium) {
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if (!build_with_chromium) {
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sources += [
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sources += [
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@ -306,7 +291,6 @@ if (is_ios || is_mac) {
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"objc/Framework/Headers/WebRTC/RTCMediaStreamTrack.h",
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"objc/Framework/Headers/WebRTC/RTCMediaStreamTrack.h",
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"objc/Framework/Headers/WebRTC/RTCMetrics.h",
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"objc/Framework/Headers/WebRTC/RTCMetrics.h",
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"objc/Framework/Headers/WebRTC/RTCMetricsSampleInfo.h",
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"objc/Framework/Headers/WebRTC/RTCMetricsSampleInfo.h",
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"objc/Framework/Headers/WebRTC/RTCMTLVideoView.h",
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"objc/Framework/Headers/WebRTC/RTCPeerConnection.h",
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"objc/Framework/Headers/WebRTC/RTCPeerConnection.h",
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"objc/Framework/Headers/WebRTC/RTCPeerConnectionFactory.h",
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"objc/Framework/Headers/WebRTC/RTCPeerConnectionFactory.h",
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"objc/Framework/Headers/WebRTC/RTCRtpCodecParameters.h",
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"objc/Framework/Headers/WebRTC/RTCRtpCodecParameters.h",
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@ -1,41 +0,0 @@
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/*
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* Copyright 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#import <Foundation/Foundation.h>
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#import <MetalKit/MTKView.h>
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#import "WebRTC/RTCVideoFrame.h"
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/**
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* Protocol defining ability to render RTCVideoFrame in Metal enabled views.
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*/
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@protocol RTCMTLRenderer <NSObject>
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/**
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* Method to be implemented to perform actual rendering of the provided frame.
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*
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* @param frame The frame to be rendered.
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*/
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- (void)drawFrame:(RTCVideoFrame *)frame;
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@end
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/**
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* Implementation of RTCMTLRenderer protocol for rendering native nv12 video frames.
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*/
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@interface RTCMTLNV12Renderer : NSObject <RTCMTLRenderer>
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/**
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* Sets the provided view as rendering destination if possible.
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*
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* If not possible method returns NO and callers of the method are responisble for performing
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* cleanups.
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*/
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- (BOOL)addRenderingDestination:(__kindof MTKView *)view;
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@end
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@ -1,319 +0,0 @@
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/*
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* Copyright 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
|
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#import "RTCMTLNV12Renderer.h"
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#import <Metal/Metal.h>
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#import <MetalKit/MetalKit.h>
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#import "WebRTC/RTCLogging.h"
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#import "WebRTC/RTCVideoFrame.h"
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#include "webrtc/api/video/video_rotation.h"
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#define MTL_STRINGIFY(s) @ #s
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// As defined in shaderSource.
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static NSString *const vertexFunctionName = @"vertexPassthrough";
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static NSString *const fragmentFunctionName = @"fragmentColorConversion";
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static NSString *const pipelineDescriptorLabel = @"RTCPipeline";
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static NSString *const commandBufferLabel = @"RTCCommandBuffer";
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static NSString *const renderEncoderLabel = @"RTCEncoder";
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static NSString *const renderEncoderDebugGroup = @"RTCDrawFrame";
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static const float cubeVertexData[64] = {
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-1.0, -1.0, 0.0, 1.0, 1.0, -1.0, 1.0, 1.0, -1.0, 1.0, 0.0, 0.0, 1.0, 1.0, 1.0, 0.0,
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// rotation = 90, offset = 16.
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-1.0, -1.0, 1.0, 1.0, 1.0, -1.0, 1.0, 0.0, -1.0, 1.0, 0.0, 1.0, 1.0, 1.0, 0.0, 0.0,
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// rotation = 180, offset = 32.
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-1.0, -1.0, 1.0, 0.0, 1.0, -1.0, 0.0, 0.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 1.0,
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// rotation = 270, offset = 48.
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-1.0, -1.0, 0.0, 0.0, 1.0, -1.0, 0.0, 1.0, -1.0, 1.0, 1.0, 0.0, 1.0, 1.0, 1.0, 1.0,
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};
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static inline int offsetForRotation(webrtc::VideoRotation rotation) {
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switch (rotation) {
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case webrtc::kVideoRotation_0:
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return 0;
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case webrtc::kVideoRotation_90:
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return 16;
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case webrtc::kVideoRotation_180:
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return 32;
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case webrtc::kVideoRotation_270:
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return 48;
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}
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return 0;
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}
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static NSString *const shaderSource = MTL_STRINGIFY(
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using namespace metal; typedef struct {
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packed_float2 position;
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packed_float2 texcoord;
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} Vertex;
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typedef struct {
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float4 position[[position]];
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float2 texcoord;
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} Varyings;
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vertex Varyings vertexPassthrough(device Vertex * verticies[[buffer(0)]],
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unsigned int vid[[vertex_id]]) {
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Varyings out;
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device Vertex &v = verticies[vid];
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out.position = float4(float2(v.position), 0.0, 1.0);
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out.texcoord = v.texcoord;
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return out;
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}
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// Receiving YCrCb textures.
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fragment half4 fragmentColorConversion(
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Varyings in[[stage_in]], texture2d<float, access::sample> textureY[[texture(0)]],
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texture2d<float, access::sample> textureCbCr[[texture(1)]]) {
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constexpr sampler s(address::clamp_to_edge, filter::linear);
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float y;
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float2 uv;
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y = textureY.sample(s, in.texcoord).r;
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uv = textureCbCr.sample(s, in.texcoord).rg - float2(0.5, 0.5);
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// Conversion for YUV to rgb from http://www.fourcc.org/fccyvrgb.php
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float4 out = float4(y + 1.403 * uv.y, y - 0.344 * uv.x - 0.714 * uv.y, y + 1.770 * uv.x, 1.0);
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return half4(out);
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});
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// The max number of command buffers in flight (submitted to GPU).
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// For now setting it up to 1.
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// In future we might use triple buffering method if it improves performance.
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static const NSInteger kMaxInflightBuffers = 1;
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@implementation RTCMTLNV12Renderer {
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__kindof MTKView *_view;
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// Controller.
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dispatch_semaphore_t _inflight_semaphore;
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// Renderer.
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id<MTLDevice> _device;
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id<MTLCommandQueue> _commandQueue;
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id<MTLLibrary> _defaultLibrary;
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id<MTLRenderPipelineState> _pipelineState;
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// Textures.
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CVMetalTextureCacheRef _textureCache;
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id<MTLTexture> _yTexture;
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id<MTLTexture> _CrCbTexture;
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// Buffers.
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id<MTLBuffer> _vertexBuffer;
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// RTC Frame parameters.
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int _offset;
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}
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- (instancetype)init {
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if (self = [super init]) {
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// _offset of 0 is equal to rotation of 0.
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_offset = 0;
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_inflight_semaphore = dispatch_semaphore_create(kMaxInflightBuffers);
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}
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return self;
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}
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- (BOOL)addRenderingDestination:(__kindof MTKView *)view {
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return [self setupWithView:view];
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}
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#pragma mark - Private
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- (BOOL)setupWithView:(__kindof MTKView *)view {
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BOOL success = NO;
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if ([self setupMetal]) {
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[self setupView:view];
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[self loadAssets];
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[self setupBuffers];
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[self initializeTextureCache];
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success = YES;
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}
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return success;
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}
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#pragma mark - GPU methods
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- (BOOL)setupMetal {
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// Set the view to use the default device.
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_device = MTLCreateSystemDefaultDevice();
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if (!_device) {
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return NO;
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}
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// Create a new command queue.
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_commandQueue = [_device newCommandQueue];
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// Load metal library from source.
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NSError *libraryError = nil;
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id<MTLLibrary> sourceLibrary =
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[_device newLibraryWithSource:shaderSource options:NULL error:&libraryError];
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if (libraryError) {
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RTCLogError(@"Metal: Library with source failed\n%@", libraryError);
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return NO;
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}
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if (!sourceLibrary) {
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RTCLogError(@"Metal: Failed to load library. %@", libraryError);
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return NO;
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}
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_defaultLibrary = sourceLibrary;
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return YES;
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}
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- (void)setupView:(__kindof MTKView *)view {
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view.device = _device;
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view.preferredFramesPerSecond = 30;
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view.autoResizeDrawable = NO;
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// We need to keep reference to the view as it's needed down the rendering pipeline.
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_view = view;
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}
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- (void)loadAssets {
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id<MTLFunction> vertexFunction = [_defaultLibrary newFunctionWithName:vertexFunctionName];
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id<MTLFunction> fragmentFunction =
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[_defaultLibrary newFunctionWithName:fragmentFunctionName];
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MTLRenderPipelineDescriptor *pipelineDescriptor = [[MTLRenderPipelineDescriptor alloc] init];
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pipelineDescriptor.label = pipelineDescriptorLabel;
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pipelineDescriptor.vertexFunction = vertexFunction;
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pipelineDescriptor.fragmentFunction = fragmentFunction;
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pipelineDescriptor.colorAttachments[0].pixelFormat = _view.colorPixelFormat;
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pipelineDescriptor.depthAttachmentPixelFormat = MTLPixelFormatInvalid;
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NSError *error = nil;
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_pipelineState = [_device newRenderPipelineStateWithDescriptor:pipelineDescriptor error:&error];
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|
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if (!_pipelineState) {
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RTCLogError(@"Metal: Failed to create pipeline state. %@", error);
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||||||
}
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||||||
}
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||||||
- (void)setupBuffers {
|
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_vertexBuffer = [_device newBufferWithBytes:cubeVertexData
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length:sizeof(cubeVertexData)
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options:MTLResourceOptionCPUCacheModeDefault];
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|
||||||
}
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|
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|
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- (void)initializeTextureCache {
|
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CVReturn status =
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CVMetalTextureCacheCreate(kCFAllocatorDefault, nil, _device, nil, &_textureCache);
|
|
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if (status != kCVReturnSuccess) {
|
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RTCLogError(@"Metal: Failed to initialize metal texture cache. Return status is %d", status);
|
|
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}
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}
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- (void)render {
|
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// Wait until the inflight (curently sent to GPU) command buffer
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// has completed the GPU work.
|
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dispatch_semaphore_wait(_inflight_semaphore, DISPATCH_TIME_FOREVER);
|
|
||||||
|
|
||||||
id<MTLCommandBuffer> commandBuffer = [_commandQueue commandBuffer];
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|
||||||
commandBuffer.label = commandBufferLabel;
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|
||||||
|
|
||||||
__block dispatch_semaphore_t block_semaphore = _inflight_semaphore;
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|
||||||
[commandBuffer addCompletedHandler:^(id<MTLCommandBuffer> _Nonnull) {
|
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||||||
// GPU work completed.
|
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dispatch_semaphore_signal(block_semaphore);
|
|
||||||
}];
|
|
||||||
|
|
||||||
MTLRenderPassDescriptor *_renderPassDescriptor = _view.currentRenderPassDescriptor;
|
|
||||||
if (_renderPassDescriptor) { // Valid drawable.
|
|
||||||
id<MTLRenderCommandEncoder> renderEncoder =
|
|
||||||
[commandBuffer renderCommandEncoderWithDescriptor:_renderPassDescriptor];
|
|
||||||
renderEncoder.label = renderEncoderLabel;
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|
||||||
|
|
||||||
// Set context state.
|
|
||||||
[renderEncoder pushDebugGroup:renderEncoderDebugGroup];
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|
||||||
[renderEncoder setRenderPipelineState:_pipelineState];
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|
||||||
[renderEncoder setVertexBuffer:_vertexBuffer offset:_offset * sizeof(float) atIndex:0];
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|
||||||
[renderEncoder setFragmentTexture:_yTexture atIndex:0];
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|
||||||
[renderEncoder setFragmentTexture:_CrCbTexture atIndex:1];
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|
||||||
|
|
||||||
[renderEncoder drawPrimitives:MTLPrimitiveTypeTriangleStrip
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|
||||||
vertexStart:0
|
|
||||||
vertexCount:4
|
|
||||||
instanceCount:1];
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|
||||||
[renderEncoder popDebugGroup];
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|
||||||
[renderEncoder endEncoding];
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|
||||||
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|
||||||
[commandBuffer presentDrawable:_view.currentDrawable];
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|
||||||
}
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||||||
|
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||||||
// CPU work is completed, GPU work can be started.
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|
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[commandBuffer commit];
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|
||||||
}
|
|
||||||
|
|
||||||
#pragma mark - RTCMTLRenderer
|
|
||||||
|
|
||||||
- (void)drawFrame:(RTCVideoFrame *)frame {
|
|
||||||
[self setupTexturesForFrame:frame];
|
|
||||||
@autoreleasepool {
|
|
||||||
[self render];
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
- (void)setupTexturesForFrame:(nonnull RTCVideoFrame *)frame {
|
|
||||||
CVPixelBufferRef pixelBuffer = frame.nativeHandle;
|
|
||||||
|
|
||||||
id<MTLTexture> lumaTexture = nil;
|
|
||||||
id<MTLTexture> chromaTexture = nil;
|
|
||||||
CVMetalTextureRef outTexture = nullptr;
|
|
||||||
|
|
||||||
// Luma (y) texture.
|
|
||||||
int lumaWidth = CVPixelBufferGetWidthOfPlane(pixelBuffer, 0);
|
|
||||||
int lumaHeight = CVPixelBufferGetHeightOfPlane(pixelBuffer, 0);
|
|
||||||
|
|
||||||
int indexPlane = 0;
|
|
||||||
CVReturn result = CVMetalTextureCacheCreateTextureFromImage(
|
|
||||||
kCFAllocatorDefault, _textureCache, pixelBuffer, nil, MTLPixelFormatR8Unorm, lumaWidth,
|
|
||||||
lumaHeight, indexPlane, &outTexture);
|
|
||||||
|
|
||||||
if (result == kCVReturnSuccess) {
|
|
||||||
lumaTexture = CVMetalTextureGetTexture(outTexture);
|
|
||||||
}
|
|
||||||
|
|
||||||
// Same as CFRelease except it can be passed NULL without crashing.
|
|
||||||
CVBufferRelease(outTexture);
|
|
||||||
outTexture = nullptr;
|
|
||||||
|
|
||||||
// Chroma (CrCb) texture.
|
|
||||||
indexPlane = 1;
|
|
||||||
result = CVMetalTextureCacheCreateTextureFromImage(
|
|
||||||
kCFAllocatorDefault, _textureCache, pixelBuffer, nil, MTLPixelFormatRG8Unorm, lumaWidth / 2,
|
|
||||||
lumaHeight / 2, indexPlane, &outTexture);
|
|
||||||
if (result == kCVReturnSuccess) {
|
|
||||||
chromaTexture = CVMetalTextureGetTexture(outTexture);
|
|
||||||
}
|
|
||||||
CVBufferRelease(outTexture);
|
|
||||||
|
|
||||||
if (lumaTexture != nil && chromaTexture != nil) {
|
|
||||||
_yTexture = lumaTexture;
|
|
||||||
_CrCbTexture = chromaTexture;
|
|
||||||
_offset = offsetForRotation((webrtc::VideoRotation)frame.rotation);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
@end
|
|
||||||
@ -1,107 +0,0 @@
|
|||||||
/*
|
|
||||||
* Copyright 2017 The WebRTC project authors. All Rights Reserved.
|
|
||||||
*
|
|
||||||
* Use of this source code is governed by a BSD-style license
|
|
||||||
* that can be found in the LICENSE file in the root of the source
|
|
||||||
* tree. An additional intellectual property rights grant can be found
|
|
||||||
* in the file PATENTS. All contributing project authors may
|
|
||||||
* be found in the AUTHORS file in the root of the source tree.
|
|
||||||
*/
|
|
||||||
|
|
||||||
#import "WebRTC/RTCMTLVideoView.h"
|
|
||||||
|
|
||||||
#import <Metal/Metal.h>
|
|
||||||
#import <MetalKit/MetalKit.h>
|
|
||||||
|
|
||||||
#import "WebRTC/RTCLogging.h"
|
|
||||||
#import "WebRTC/RTCVideoFrame.h"
|
|
||||||
|
|
||||||
#import "RTCMTLNV12Renderer.h"
|
|
||||||
|
|
||||||
@interface RTCMTLVideoView () <MTKViewDelegate>
|
|
||||||
@property(nonatomic, strong) id<RTCMTLRenderer> renderer;
|
|
||||||
@property(nonatomic, strong) MTKView *metalView;
|
|
||||||
@property(atomic, strong) RTCVideoFrame *videoFrame;
|
|
||||||
@end
|
|
||||||
|
|
||||||
@implementation RTCMTLVideoView {
|
|
||||||
id<RTCMTLRenderer> _renderer;
|
|
||||||
}
|
|
||||||
|
|
||||||
@synthesize renderer = _renderer;
|
|
||||||
@synthesize metalView = _metalView;
|
|
||||||
@synthesize videoFrame = _videoFrame;
|
|
||||||
|
|
||||||
- (instancetype)initWithFrame:(CGRect)frameRect {
|
|
||||||
self = [super initWithFrame:frameRect];
|
|
||||||
if (self) {
|
|
||||||
[self configure];
|
|
||||||
}
|
|
||||||
return self;
|
|
||||||
}
|
|
||||||
|
|
||||||
- (instancetype)initWithCoder:(NSCoder *)aCoder {
|
|
||||||
self = [super initWithCoder:aCoder];
|
|
||||||
if (self) {
|
|
||||||
[self configure];
|
|
||||||
}
|
|
||||||
return self;
|
|
||||||
}
|
|
||||||
|
|
||||||
#pragma mark - Private
|
|
||||||
|
|
||||||
+ (BOOL)isMetalAvailable {
|
|
||||||
#if defined(__OBJC__) && COREVIDEO_SUPPORTS_METAL
|
|
||||||
return YES;
|
|
||||||
#elif
|
|
||||||
return NO;
|
|
||||||
#endif
|
|
||||||
}
|
|
||||||
|
|
||||||
- (void)configure {
|
|
||||||
if ([RTCMTLVideoView isMetalAvailable]) {
|
|
||||||
_metalView = [[MTKView alloc] initWithFrame:self.bounds];
|
|
||||||
[self addSubview:_metalView];
|
|
||||||
_metalView.delegate = self;
|
|
||||||
_metalView.contentMode = UIViewContentModeScaleAspectFit;
|
|
||||||
_metalView.translatesAutoresizingMaskIntoConstraints = NO;
|
|
||||||
UILayoutGuide *margins = self.layoutMarginsGuide;
|
|
||||||
[_metalView.topAnchor constraintEqualToAnchor:margins.topAnchor].active = YES;
|
|
||||||
[_metalView.bottomAnchor constraintEqualToAnchor:margins.bottomAnchor].active = YES;
|
|
||||||
[_metalView.leftAnchor constraintEqualToAnchor:margins.leftAnchor].active = YES;
|
|
||||||
[_metalView.rightAnchor constraintEqualToAnchor:margins.rightAnchor].active = YES;
|
|
||||||
|
|
||||||
_renderer = [[RTCMTLNV12Renderer alloc] init];
|
|
||||||
if (![(RTCMTLNV12Renderer *)_renderer addRenderingDestination:_metalView]) {
|
|
||||||
_renderer = nil;
|
|
||||||
};
|
|
||||||
} else {
|
|
||||||
RTCLogError("Metal configuration falied.");
|
|
||||||
}
|
|
||||||
}
|
|
||||||
#pragma mark - MTKViewDelegate methods
|
|
||||||
|
|
||||||
- (void)drawInMTKView:(nonnull MTKView *)view {
|
|
||||||
NSAssert(view == self.metalView, @"Receiving draw callbacks from foreign instance.");
|
|
||||||
[_renderer drawFrame:self.videoFrame];
|
|
||||||
}
|
|
||||||
|
|
||||||
- (void)mtkView:(MTKView *)view drawableSizeWillChange:(CGSize)size {
|
|
||||||
}
|
|
||||||
|
|
||||||
#pragma mark - RTCVideoRenderer
|
|
||||||
|
|
||||||
- (void)setSize:(CGSize)size {
|
|
||||||
_metalView.drawableSize = size;
|
|
||||||
[_metalView draw];
|
|
||||||
}
|
|
||||||
|
|
||||||
- (void)renderFrame:(nullable RTCVideoFrame *)frame {
|
|
||||||
if (frame == nil) {
|
|
||||||
RTCLogInfo(@"Incoming frame is nil. Exiting render callback.");
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
self.videoFrame = frame;
|
|
||||||
}
|
|
||||||
|
|
||||||
@end
|
|
||||||
@ -1,28 +0,0 @@
|
|||||||
/*
|
|
||||||
* Copyright 2017 The WebRTC project authors. All Rights Reserved.
|
|
||||||
*
|
|
||||||
* Use of this source code is governed by a BSD-style license
|
|
||||||
* that can be found in the LICENSE file in the root of the source
|
|
||||||
* tree. An additional intellectual property rights grant can be found
|
|
||||||
* in the file PATENTS. All contributing project authors may
|
|
||||||
* be found in the AUTHORS file in the root of the source tree.
|
|
||||||
*/
|
|
||||||
|
|
||||||
#import <Foundation/Foundation.h>
|
|
||||||
|
|
||||||
#import "WebRTC/RTCVideoRenderer.h"
|
|
||||||
|
|
||||||
NS_ASSUME_NONNULL_BEGIN
|
|
||||||
RTC_EXPORT
|
|
||||||
|
|
||||||
/**
|
|
||||||
* RTCMTLVideoView is thin wrapper around MTKView.
|
|
||||||
*
|
|
||||||
* It has id<RTCVideoRenderer> property that renders video frames in the view's
|
|
||||||
* bounds using Metal.
|
|
||||||
*/
|
|
||||||
NS_CLASS_AVAILABLE_IOS(9)
|
|
||||||
@interface RTCMTLVideoView : UIView <RTCVideoRenderer>
|
|
||||||
|
|
||||||
@end
|
|
||||||
NS_ASSUME_NONNULL_END
|
|
||||||
Reference in New Issue
Block a user