dom/media/platforms/apple/VideoToolbox/VideoToolbox.h
author Sylvestre Ledru <sledru@mozilla.com>
Mon, 19 Nov 2018 13:25:37 +0000
changeset 446960 0ceae9db9ec0be18daa1a279511ad305723185d4
parent 244307 0aeb4344fb3776ba3cf09e867dfc8908ef9d3355
permissions -rw-r--r--
Bug 1204606 - Reformat of dom/media r=jya # skip-blame Differential Revision: https://phabricator.services.mozilla.com/D12251

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

// Stub header for VideoToolbox framework API.
// We include our own copy so we can build on MacOS versions
// where it's not available.

#ifndef mozilla_VideoToolbox_VideoToolbox_h
#define mozilla_VideoToolbox_VideoToolbox_h

// CoreMedia is available starting in OS X 10.7,
// so we need to dlopen it as well to run on 10.6,
// but we can depend on the real framework headers at build time.

#include <CoreFoundation/CoreFoundation.h>
#include <CoreMedia/CoreMedia.h>
#include <CoreVideo/CVPixelBuffer.h>

typedef uint32_t VTDecodeFrameFlags;
typedef uint32_t VTDecodeInfoFlags;
enum {
  kVTDecodeInfo_Asynchronous = 1UL << 0,
  kVTDecodeInfo_FrameDropped = 1UL << 1,
};
enum {
  kVTDecodeFrame_EnableAsynchronousDecompression = 1 << 0,
  kVTDecodeFrame_DoNotOutputFrame = 1 << 1,
  kVTDecodeFrame_1xRealTimePlayback = 1 << 2,
  kVTDecodeFrame_EnableTemporalProcessing = 1 << 3,
};

typedef CFTypeRef VTSessionRef;
typedef struct OpaqueVTDecompressionSession* VTDecompressionSessionRef;
typedef void (*VTDecompressionOutputCallback)(void*, void*, OSStatus,
                                              VTDecodeInfoFlags,
                                              CVImageBufferRef, CMTime, CMTime);
typedef struct VTDecompressionOutputCallbackRecord {
  VTDecompressionOutputCallback decompressionOutputCallback;
  void* decompressionOutputRefCon;
} VTDecompressionOutputCallbackRecord;

OSStatus VTDecompressionSessionCreate(
    CFAllocatorRef, CMVideoFormatDescriptionRef, CFDictionaryRef,
    CFDictionaryRef, const VTDecompressionOutputCallbackRecord*,
    VTDecompressionSessionRef*);

OSStatus VTDecompressionSessionDecodeFrame(VTDecompressionSessionRef,
                                           CMSampleBufferRef,
                                           VTDecodeFrameFlags, void*,
                                           VTDecodeInfoFlags*);

OSStatus VTDecompressionSessionWaitForAsynchronousFrames(
    VTDecompressionSessionRef);

void VTDecompressionSessionInvalidate(VTDecompressionSessionRef);

OSStatus VTSessionCopyProperty(VTSessionRef, CFStringRef, CFAllocatorRef,
                               void*);

OSStatus VTSessionCopySupportedPropertyDictionary(VTSessionRef,
                                                  CFDictionaryRef*);

#endif  // mozilla_VideoToolbox_VideoToolbox_h