Obj-C SDK Cleanup
This CL separates the files under sdk/objc into logical directories, replacing
the previous file layout under Framework/.
A long term goal is to have some system set up to generate the files under
sdk/objc/api (the PeerConnection API wrappers) from the C++ code. In the shorter
term the goal is to abstract out shared concepts from these classes in order to
make them as uniform as possible.
The separation into base/, components/, and helpers/ are to differentiate between
the base layer's common protocols, various utilities and the actual platform
specific components.
The old directory layout that resembled a framework's internal layout is not
necessary, since it is generated by the framework target when building it.
Bug: webrtc:9627
Change-Id: Ib084fd83f050ae980649ca99e841f4fb0580bd8f
Reviewed-on: https://webrtc-review.googlesource.com/94142
Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Reviewed-by: Henrik Andreassson <henrika@webrtc.org>
Commit-Queue: Anders Carlsson <andersc@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24493}diff --git a/sdk/objc/unittests/frame_buffer_helpers.mm b/sdk/objc/unittests/frame_buffer_helpers.mm
new file mode 100644
index 0000000..98b86c5
--- /dev/null
+++ b/sdk/objc/unittests/frame_buffer_helpers.mm
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2018 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.
+ */
+
+#include "sdk/objc/unittests/frame_buffer_helpers.h"
+
+#include "third_party/libyuv/include/libyuv.h"
+
+void DrawGradientInRGBPixelBuffer(CVPixelBufferRef pixelBuffer) {
+ CVPixelBufferLockBaseAddress(pixelBuffer, kCVPixelBufferLock_ReadOnly);
+ void* baseAddr = CVPixelBufferGetBaseAddress(pixelBuffer);
+ size_t width = CVPixelBufferGetWidth(pixelBuffer);
+ size_t height = CVPixelBufferGetHeight(pixelBuffer);
+ CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
+ int byteOrder = CVPixelBufferGetPixelFormatType(pixelBuffer) == kCVPixelFormatType_32ARGB ?
+ kCGBitmapByteOrder32Little :
+ 0;
+ CGContextRef cgContext = CGBitmapContextCreate(baseAddr,
+ width,
+ height,
+ 8,
+ CVPixelBufferGetBytesPerRow(pixelBuffer),
+ colorSpace,
+ byteOrder | kCGImageAlphaNoneSkipLast);
+
+ // Create a gradient
+ CGFloat colors[] = {
+ 1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 0.0, 1.0, 1.0,
+ };
+ CGGradientRef gradient = CGGradientCreateWithColorComponents(colorSpace, colors, NULL, 4);
+
+ CGContextDrawLinearGradient(
+ cgContext, gradient, CGPointMake(0, 0), CGPointMake(width, height), 0);
+ CGGradientRelease(gradient);
+
+ CGImageRef cgImage = CGBitmapContextCreateImage(cgContext);
+ CGContextRelease(cgContext);
+ CGImageRelease(cgImage);
+ CGColorSpaceRelease(colorSpace);
+
+ CVPixelBufferUnlockBaseAddress(pixelBuffer, kCVPixelBufferLock_ReadOnly);
+}
+
+rtc::scoped_refptr<webrtc::I420Buffer> CreateI420Gradient(int width, int height) {
+ rtc::scoped_refptr<webrtc::I420Buffer> buffer(webrtc::I420Buffer::Create(width, height));
+ // Initialize with gradient, Y = 128(x/w + y/h), U = 256 x/w, V = 256 y/h
+ for (int x = 0; x < width; x++) {
+ for (int y = 0; y < height; y++) {
+ buffer->MutableDataY()[x + y * width] = 128 * (x * height + y * width) / (width * height);
+ }
+ }
+ int chroma_width = buffer->ChromaWidth();
+ int chroma_height = buffer->ChromaHeight();
+ for (int x = 0; x < chroma_width; x++) {
+ for (int y = 0; y < chroma_height; y++) {
+ buffer->MutableDataU()[x + y * chroma_width] = 255 * x / (chroma_width - 1);
+ buffer->MutableDataV()[x + y * chroma_width] = 255 * y / (chroma_height - 1);
+ }
+ }
+ return buffer;
+}
+
+void CopyI420BufferToCVPixelBuffer(rtc::scoped_refptr<webrtc::I420Buffer> i420Buffer,
+ CVPixelBufferRef pixelBuffer) {
+ CVPixelBufferLockBaseAddress(pixelBuffer, 0);
+
+ const OSType pixelFormat = CVPixelBufferGetPixelFormatType(pixelBuffer);
+ if (pixelFormat == kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange ||
+ pixelFormat == kCVPixelFormatType_420YpCbCr8BiPlanarFullRange) {
+ // NV12
+ uint8_t* dstY = static_cast<uint8_t*>(CVPixelBufferGetBaseAddressOfPlane(pixelBuffer, 0));
+ const int dstYStride = CVPixelBufferGetBytesPerRowOfPlane(pixelBuffer, 0);
+ uint8_t* dstUV = static_cast<uint8_t*>(CVPixelBufferGetBaseAddressOfPlane(pixelBuffer, 1));
+ const int dstUVStride = CVPixelBufferGetBytesPerRowOfPlane(pixelBuffer, 1);
+
+ libyuv::I420ToNV12(i420Buffer->DataY(),
+ i420Buffer->StrideY(),
+ i420Buffer->DataU(),
+ i420Buffer->StrideU(),
+ i420Buffer->DataV(),
+ i420Buffer->StrideV(),
+ dstY,
+ dstYStride,
+ dstUV,
+ dstUVStride,
+ i420Buffer->width(),
+ i420Buffer->height());
+ } else {
+ uint8_t* dst = static_cast<uint8_t*>(CVPixelBufferGetBaseAddress(pixelBuffer));
+ const int bytesPerRow = CVPixelBufferGetBytesPerRow(pixelBuffer);
+
+ if (pixelFormat == kCVPixelFormatType_32BGRA) {
+ // Corresponds to libyuv::FOURCC_ARGB
+ libyuv::I420ToARGB(i420Buffer->DataY(),
+ i420Buffer->StrideY(),
+ i420Buffer->DataU(),
+ i420Buffer->StrideU(),
+ i420Buffer->DataV(),
+ i420Buffer->StrideV(),
+ dst,
+ bytesPerRow,
+ i420Buffer->width(),
+ i420Buffer->height());
+ } else if (pixelFormat == kCVPixelFormatType_32ARGB) {
+ // Corresponds to libyuv::FOURCC_BGRA
+ libyuv::I420ToBGRA(i420Buffer->DataY(),
+ i420Buffer->StrideY(),
+ i420Buffer->DataU(),
+ i420Buffer->StrideU(),
+ i420Buffer->DataV(),
+ i420Buffer->StrideV(),
+ dst,
+ bytesPerRow,
+ i420Buffer->width(),
+ i420Buffer->height());
+ }
+ }
+
+ CVPixelBufferUnlockBaseAddress(pixelBuffer, 0);
+}