The Tor Browser: media/omx-plugin/OmxPlugin.cpp@97036ab72558 (annotated)

media/omx-plugin/OmxPlugin.cpp@97036ab72558 (annotated)

media/omx-plugin/OmxPlugin.cpp

Tue, 06 Jan 2015 21:39:09 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Tue, 06 Jan 2015 21:39:09 +0100
branch: TOR_BUG_9701
changeset 8: 97036ab72558
permissions: -rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 /* -*- 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/. */
 #include <stagefright/ColorConverter.h>
 #include <stagefright/DataSource.h>
 #include <stagefright/MediaExtractor.h>
 #include <stagefright/MetaData.h>
 #include <stagefright/OMXCodec.h>
 #include <media/stagefright/MediaErrors.h>
 #ifdef MOZ_WIDGET_GONK
 #include <OMX.h>
 #else
 #include <stagefright/OMXClient.h>
 #endif
 #include <algorithm>
 #include "mozilla/Assertions.h"
 #include "mozilla/Types.h"
 #include "MPAPI.h"
 #include "android/log.h"
 #define MAX_DECODER_NAME_LEN 256
 #define AVC_MIME_TYPE "video/avc"
 #if !defined(MOZ_ANDROID_FROYO)
 #define DEFAULT_STAGEFRIGHT_FLAGS OMXCodec::kClientNeedsFramebuffer
 #else
 #define DEFAULT_STAGEFRIGHT_FLAGS 0
 #endif
 #undef LOG
 #define LOG(args...)  __android_log_print(ANDROID_LOG_INFO, "OmxPlugin" , ## args)
 #if defined(MOZ_ANDROID_FROYO) || defined(MOZ_ANDROID_GB)
 // Android versions 2.x.x have common API differences
 #define MOZ_ANDROID_V2_X_X
 #endif
 #if !defined(MOZ_ANDROID_V2_X_X) && !defined(MOZ_ANDROID_HC)
 #define MOZ_ANDROID_V4_OR_ABOVE
 #endif
 #if defined(MOZ_ANDROID_V4_OR_ABOVE)
 #include <I420ColorConverter.h>
 #endif
 using namespace MPAPI;
 #if !defined(MOZ_STAGEFRIGHT_OFF_T)
 #define MOZ_STAGEFRIGHT_OFF_T off64_t
 #endif
 using namespace android;
 namespace OmxPlugin {
 const int OMX_QCOM_COLOR_FormatYVU420PackedSemiPlanar32m4ka = 0x7FA30C01;
 const int OMX_QCOM_COLOR_FormatYVU420SemiPlanar = 0x7FA30C00;
 const int OMX_TI_COLOR_FormatYUV420PackedSemiPlanar = 0x7F000100;
 class OmxDecoder {
   PluginHost *mPluginHost;
   Decoder *mDecoder;
   sp<MediaSource> mVideoTrack;
   sp<MediaSource> mVideoSource;
   sp<MediaSource> mAudioTrack;
   sp<MediaSource> mAudioSource;
   int32_t mVideoWidth;
   int32_t mVideoHeight;
   int32_t mVideoColorFormat;
   int32_t mVideoStride;
   int32_t mVideoSliceHeight;
   int32_t mVideoCropLeft;
   int32_t mVideoCropTop;
   int32_t mVideoCropRight;
   int32_t mVideoCropBottom;
   int32_t mVideoRotation;
   int32_t mAudioChannels;
   int32_t mAudioSampleRate;
   int64_t mDurationUs;
   MediaBuffer *mVideoBuffer;
   VideoFrame mVideoFrame;
   MediaBuffer *mAudioBuffer;
   AudioFrame mAudioFrame;
   ColorConverter *mColorConverter;
   // 'true' if a read from the audio stream was done while reading the metadata
   bool mAudioMetadataRead;
   void ReleaseVideoBuffer();
   void ReleaseAudioBuffer();
   void ToVideoFrame_YUV420Planar(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame);
   void ToVideoFrame_CbYCrY(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame);
   void ToVideoFrame_YUV420SemiPlanar(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame);
   void ToVideoFrame_YVU420SemiPlanar(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame);
   void ToVideoFrame_YUV420PackedSemiPlanar(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame);
   void ToVideoFrame_YVU420PackedSemiPlanar32m4ka(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame);
   bool ToVideoFrame_RGB565(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame, BufferCallback *aBufferCallback);
   bool ToVideoFrame_ColorConverter(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame, BufferCallback *aBufferCallback);
   bool ToVideoFrame_I420ColorConverter(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame, BufferCallback *aBufferCallback);
   bool ToVideoFrame(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame, BufferCallback *aBufferCallback);
   bool ToAudioFrame(AudioFrame *aFrame, int64_t aTimeUs, void *aData, size_t aDataOffset, size_t aSize,
                     int32_t aAudioChannels, int32_t aAudioSampleRate);
 public:
   OmxDecoder(PluginHost *aPluginHost, Decoder *aDecoder);
   ~OmxDecoder();
   bool Init();
   bool SetVideoFormat();
   bool SetAudioFormat();
   void GetDuration(int64_t *durationUs) {
     *durationUs = mDurationUs;
   }
   void GetVideoParameters(int32_t *width, int32_t *height) {
     *width = mVideoWidth;
     *height = mVideoHeight;
   }
   void GetAudioParameters(int32_t *numChannels, int32_t *sampleRate) {
     *numChannels = mAudioChannels;
     *sampleRate = mAudioSampleRate;
   }
   bool HasVideo() {
     return mVideoSource != nullptr;
   }
   bool HasAudio() {
     return mAudioSource != nullptr;
   }
   bool ReadVideo(VideoFrame *aFrame, int64_t aSeekTimeUs, BufferCallback *aBufferCallback);
   bool ReadAudio(AudioFrame *aFrame, int64_t aSeekTimeUs);
 };
 #if !defined(MOZ_WIDGET_GONK)
 static class OmxClientInstance {
 public:
   OmxClientInstance()
     : mClient(new OMXClient())
     , mStatus(mClient->connect())
   {
   }
   status_t IsValid()
   {
     return mStatus == OK;
   }
   OMXClient *get()
   {
     return mClient;
   }
   ~OmxClientInstance()
   {
     if (mStatus == OK) {
       mClient->disconnect();
     }
     delete mClient;
   }
 private:
   OMXClient *mClient;
   status_t mStatus;
 } sClientInstance;
 #endif
 OmxDecoder::OmxDecoder(PluginHost *aPluginHost, Decoder *aDecoder) :
   mPluginHost(aPluginHost),
   mDecoder(aDecoder),
   mVideoWidth(0),
   mVideoHeight(0),
   mVideoColorFormat(0),
   mVideoStride(0),
   mVideoSliceHeight(0),
   mVideoCropLeft(0),
   mVideoCropTop(0),
   mVideoCropRight(0),
   mVideoCropBottom(0),
   mVideoRotation(0),
   mAudioChannels(-1),
   mAudioSampleRate(-1),
   mDurationUs(-1),
   mVideoBuffer(nullptr),
   mAudioBuffer(nullptr),
   mColorConverter(nullptr),
   mAudioMetadataRead(false)
 {
 }
 OmxDecoder::~OmxDecoder()
 {
   ReleaseVideoBuffer();
   ReleaseAudioBuffer();
   if (mVideoSource.get()) {
     mVideoSource->stop();
   }
   if (mAudioSource.get()) {
     mAudioSource->stop();
   }
 #ifndef MOZ_ANDROID_HC
   if (mColorConverter) {
     delete mColorConverter;
   }
 #endif
 }
 class AutoStopMediaSource {
   sp<MediaSource> mMediaSource;
 public:
   AutoStopMediaSource(sp<MediaSource> aMediaSource) : mMediaSource(aMediaSource) {
   }
   ~AutoStopMediaSource() {
     mMediaSource->stop();
   }
 };
 #ifdef MOZ_WIDGET_GONK
 static sp<IOMX> sOMX = nullptr;
 static sp<IOMX> GetOMX() {
   if(sOMX.get() == nullptr) {
     sOMX = reinterpret_cast<IOMX*>(new OMX);
   }
   return sOMX;
 }
 #endif
 static uint32_t
 GetDefaultStagefrightFlags(PluginHost *aPluginHost)
 {
   uint32_t flags = DEFAULT_STAGEFRIGHT_FLAGS;
 #if !defined(MOZ_ANDROID_FROYO)
   char hardware[256] = "";
   aPluginHost->GetSystemInfoString("hardware", hardware, sizeof(hardware));
   if (!strcmp("qcom", hardware)) {
     // Qualcomm's OMXCodec implementation interprets this flag to mean that we
     // only want a thumbnail and therefore only need one frame. After the first
     // frame it returns EOS.
     // All other OMXCodec implementations seen so far interpret this flag
     // sanely; some do not return full framebuffers unless this flag is passed.
     flags &= ~OMXCodec::kClientNeedsFramebuffer;
   }
   LOG("Hardware %s; using default flags %#x\n", hardware, flags);
 #endif
   return flags;
 }
 static uint32_t GetVideoCreationFlags(PluginHost* aPluginHost)
 {
 #ifdef MOZ_WIDGET_GONK
   // Flag value of zero means return a hardware or software decoder
   // depending on what the device supports.
   return 0;
 #else
   // Check whether the user has set a pref to override our default OMXCodec
   // CreationFlags flags. This is useful for A/B testing hardware and software
   // decoders for performance and bugs. The interesting flag values are:
   //  0 = Let Stagefright choose hardware or software decoding (default)
   //  8 = Force software decoding
   // 16 = Force hardware decoding
   int32_t flags = 0;
   aPluginHost->GetIntPref("media.stagefright.omxcodec.flags", &flags);
   if (flags != 0) {
 #if !defined(MOZ_ANDROID_V2_X_X)
     LOG("media.stagefright.omxcodec.flags=%d", flags);
     if ((flags & OMXCodec::kHardwareCodecsOnly) != 0) {
       LOG("FORCE HARDWARE DECODING");
     } else if ((flags & OMXCodec::kSoftwareCodecsOnly) != 0) {
       LOG("FORCE SOFTWARE DECODING");
     }
 #endif
   }
   flags |= GetDefaultStagefrightFlags(aPluginHost);
   return static_cast<uint32_t>(flags);
 #endif
 }
 enum ColorFormatSupport {
   ColorFormatNotSupported = 0,
   ColorFormatSupportOK,
   ColorFormatSupportPreferred,
 };
 static ColorFormatSupport
 IsColorFormatSupported(OMX_COLOR_FORMATTYPE aColorFormat)
 {
   switch (static_cast<int>(aColorFormat)) {
     case OMX_COLOR_FormatCbYCrY:
     case OMX_COLOR_FormatYUV420Planar:
     case OMX_COLOR_FormatYUV420SemiPlanar:
     case OMX_QCOM_COLOR_FormatYVU420PackedSemiPlanar32m4ka:
     case OMX_QCOM_COLOR_FormatYVU420SemiPlanar:
     case OMX_TI_COLOR_FormatYUV420PackedSemiPlanar:
       LOG("Colour format %#x supported natively.", aColorFormat);
       // Prefer natively supported colour formats over formats that need another
       // slow software conversion.
       return ColorFormatSupportPreferred;
     default:
       break;
   }
   // These formats are okay if we can't find a better one; Android provides a
   // software conversion to a sane colour format.
 #if !defined(MOZ_ANDROID_HC)
   if (ColorConverter(aColorFormat, OMX_COLOR_Format16bitRGB565).isValid()) {
     LOG("Colour format %#x supported by Android ColorConverter.", aColorFormat);
     return ColorFormatSupportOK;
   }
 #endif
 #if defined(MOZ_ANDROID_V4_OR_ABOVE)
   I420ColorConverter yuvConverter;
   if (yuvConverter.isLoaded() &&
       yuvConverter.getDecoderOutputFormat() == aColorFormat) {
     LOG("Colour format %#x supported by Android I420ColorConverter.", aColorFormat);
     return ColorFormatSupportOK;
   }
 #endif
   return ColorFormatNotSupported;
 }
 #if defined(MOZ_ANDROID_KK)
 /**
  * Look for a decoder that supports a colour format that we support.
  */
 static bool
 FindPreferredDecoderAndColorFormat(const sp<IOMX>& aOmx,
                                    char *aDecoderName,
                                    size_t aDecoderLen,
                                    OMX_COLOR_FORMATTYPE *aColorFormat)
 {
   Vector<CodecCapabilities> codecs;
   // Get all AVC decoder/colour format pairs that this device supports.
   QueryCodecs(aOmx, AVC_MIME_TYPE, true /* queryDecoders */, &codecs);
   // We assume that faster (hardware accelerated) decoders come first in the
   // list, so we choose the first decoder with a colour format we can use.
   for (uint32_t i = 0; i < codecs.size(); i++) {
     const CodecCapabilities &caps = codecs[i];
     const Vector<OMX_U32> &colors = caps.mColorFormats;
     bool found = false;
     for (uint32_t j = 0; j < colors.size(); j++) {
       OMX_COLOR_FORMATTYPE color = (OMX_COLOR_FORMATTYPE)colors[j];
       LOG("Decoder %s can output colour format %#x.\n",
           caps.mComponentName.string(), color);
       ColorFormatSupport supported = IsColorFormatSupported(color);
       if (supported) {
         strncpy(aDecoderName, caps.mComponentName.string(), aDecoderLen);
         *aColorFormat = color;
         found = true;
       }
       if (supported == ColorFormatSupportPreferred) {
         // The colour format is natively supported -- that's as good as we're
         // going to get.
         break;
       }
     }
     if (found) {
       return true;
     }
   }
   return false;
 }
 #endif
 static sp<MediaSource> CreateVideoSource(PluginHost* aPluginHost,
                                          const sp<IOMX>& aOmx,
                                          const sp<MediaSource>& aVideoTrack)
 {
   uint32_t flags = GetVideoCreationFlags(aPluginHost);
   char decoderName[MAX_DECODER_NAME_LEN] = "";
   sp<MetaData> videoFormat = aVideoTrack->getFormat();
 #if defined(MOZ_ANDROID_KK)
   OMX_COLOR_FORMATTYPE colorFormat = (OMX_COLOR_FORMATTYPE)0;
   if (FindPreferredDecoderAndColorFormat(aOmx,
                                          decoderName, sizeof(decoderName),
                                          &colorFormat)) {
     // We found a colour format that we can handle. Tell OMXCodec to use it in
     // case it isn't the default.
     videoFormat->setInt32(kKeyColorFormat, colorFormat);
     LOG("Found compatible decoder %s with colour format %#x.\n",
         decoderName, colorFormat);
   }
 #endif
   if (flags == DEFAULT_STAGEFRIGHT_FLAGS) {
     // Let Stagefright choose hardware or software decoder.
     sp<MediaSource> videoSource = OMXCodec::Create(aOmx, videoFormat,
                                                    false, aVideoTrack,
                                                    decoderName[0] ? decoderName : nullptr,
                                                    flags);
     if (videoSource == nullptr)
       return nullptr;
     // Now that OMXCodec has parsed the video's AVCDecoderConfigurationRecord,
     // check whether we know how to decode this video.
     int32_t videoColorFormat;
     if (videoSource->getFormat()->findInt32(kKeyColorFormat, &videoColorFormat)) {
       if (IsColorFormatSupported((OMX_COLOR_FORMATTYPE)videoColorFormat)) {
         return videoSource;
       }
       // We need to implement a ToVideoFrame_*() color conversion
       // function for this video color format.
       LOG("Unknown video color format: %#x", videoColorFormat);
     } else {
       LOG("Video color format not found");
     }
     // Throw away the videoSource and try again with new flags.
     LOG("Falling back to software decoder");
     videoSource.clear();
 #if defined(MOZ_ANDROID_V2_X_X)
     flags = DEFAULT_STAGEFRIGHT_FLAGS | OMXCodec::kPreferSoftwareCodecs;
 #else
     flags = DEFAULT_STAGEFRIGHT_FLAGS | OMXCodec::kSoftwareCodecsOnly;
 #endif
   }
   MOZ_ASSERT(flags != DEFAULT_STAGEFRIGHT_FLAGS);
   return OMXCodec::Create(aOmx, aVideoTrack->getFormat(), false, aVideoTrack,
                           nullptr, flags);
 }
 bool OmxDecoder::Init()
 {
 #if defined(MOZ_WIDGET_ANDROID)
   // OMXClient::connect() always returns OK and aborts fatally if
   // it can't connect. We may need to implement the connect functionality
   // ourselves if this proves to be an issue.
   if (!sClientInstance.IsValid()) {
     LOG("OMXClient failed to connect");
     return false;
   }
 #endif
   //register sniffers, if they are not registered in this process.
   DataSource::RegisterDefaultSniffers();
   sp<DataSource> dataSource =
     DataSource::CreateFromURI(static_cast<char*>(mDecoder->mResource));
   if (!dataSource.get() || dataSource->initCheck()) {
     return false;
   }
   sp<MediaExtractor> extractor = MediaExtractor::Create(dataSource);
   if (extractor == nullptr) {
     return false;
   }
   ssize_t audioTrackIndex = -1;
   ssize_t videoTrackIndex = -1;
   const char *audioMime = nullptr;
   const char *videoMime = nullptr;
   for (size_t i = 0; i < extractor->countTracks(); ++i) {
     sp<MetaData> meta = extractor->getTrackMetaData(i);
     const char *mime;
     if (!meta->findCString(kKeyMIMEType, &mime)) {
       continue;
     }
     if (videoTrackIndex == -1 && !strncasecmp(mime, "video/", 6)) {
       videoTrackIndex = i;
       videoMime = mime;
     } else if (audioTrackIndex == -1 && !strncasecmp(mime, "audio/", 6)) {
       audioTrackIndex = i;
       audioMime = mime;
     }
   }
   if (videoTrackIndex == -1 && audioTrackIndex == -1) {
     return false;
   }
   int64_t totalDurationUs = 0;
 #ifdef MOZ_WIDGET_GONK
   sp<IOMX> omx = GetOMX();
 #else
   sp<IOMX> omx = sClientInstance.get()->interface();
 #endif
   sp<MediaSource> videoTrack;
   sp<MediaSource> videoSource;
   if (videoTrackIndex != -1 && (videoTrack = extractor->getTrack(videoTrackIndex)) != nullptr) {
 #if defined(MOZ_ANDROID_FROYO)
     // Allow up to 720P video.
     sp<MetaData> meta = extractor->getTrackMetaData(videoTrackIndex);
     meta->setInt32(kKeyMaxInputSize, (1280 * 720 * 3) / 2);
 #endif
     videoSource = CreateVideoSource(mPluginHost, omx, videoTrack);
     if (videoSource == nullptr) {
       LOG("OMXCodec failed to initialize video decoder for \"%s\"", videoMime);
       return false;
     }
     status_t status = videoSource->start();
     if (status != OK) {
       LOG("videoSource->start() failed with status %#x", status);
       return false;
     }
     int64_t durationUs;
     if (videoTrack->getFormat()->findInt64(kKeyDuration, &durationUs)) {
       if (durationUs < 0)
         LOG("video duration %lld should be nonnegative", durationUs);
       if (durationUs > totalDurationUs)
         totalDurationUs = durationUs;
     }
   }
   sp<MediaSource> audioTrack;
   sp<MediaSource> audioSource;
   if (audioTrackIndex != -1 && (audioTrack = extractor->getTrack(audioTrackIndex)) != nullptr)
   {
     if (!strcasecmp(audioMime, "audio/raw")) {
       audioSource = audioTrack;
     } else {
       audioSource = OMXCodec::Create(omx,
                                      audioTrack->getFormat(),
                                      false, // decoder
                                      audioTrack);
     }
     if (audioSource == nullptr) {
       LOG("OMXCodec failed to initialize audio decoder for \"%s\"", audioMime);
       return false;
     }
     status_t status = audioSource->start();
     if (status != OK) {
       LOG("audioSource->start() failed with status %#x", status);
       return false;
     }
     int64_t durationUs;
     if (audioTrack->getFormat()->findInt64(kKeyDuration, &durationUs)) {
       if (durationUs < 0)
         LOG("audio duration %lld should be nonnegative", durationUs);
       if (durationUs > totalDurationUs)
         totalDurationUs = durationUs;
     }
   }
   // set decoder state
   mVideoTrack = videoTrack;
   mVideoSource = videoSource;
   mAudioTrack = audioTrack;
   mAudioSource = audioSource;
   mDurationUs = totalDurationUs;
   if (mVideoSource.get() && !SetVideoFormat())
     return false;
   // To reliably get the channel and sample rate data we need to read from the
   // audio source until we get a INFO_FORMAT_CHANGE status
   if (mAudioSource.get()) {
     if (mAudioSource->read(&mAudioBuffer) != INFO_FORMAT_CHANGED) {
       sp<MetaData> meta = mAudioSource->getFormat();
       if (!meta->findInt32(kKeyChannelCount, &mAudioChannels) ||
           !meta->findInt32(kKeySampleRate, &mAudioSampleRate)) {
         return false;
       }
       mAudioMetadataRead = true;
       if (mAudioChannels < 0) {
         LOG("audio channel count %d must be nonnegative", mAudioChannels);
         return false;
       }
       if (mAudioSampleRate < 0) {
         LOG("audio sample rate %d must be nonnegative", mAudioSampleRate);
         return false;
       }
     }
     else if (!SetAudioFormat()) {
         return false;
     }
   }
   return true;
 }
 bool OmxDecoder::SetVideoFormat() {
   sp<MetaData> format = mVideoSource->getFormat();
   // Stagefright's kKeyWidth and kKeyHeight are what MPAPI calls stride and
   // slice height. Stagefright only seems to use its kKeyStride and
   // kKeySliceHeight to initialize camera video formats.
 #if defined(DEBUG) && !defined(MOZ_ANDROID_FROYO)
   int32_t unexpected;
   if (format->findInt32(kKeyStride, &unexpected))
     LOG("Expected kKeyWidth, but found kKeyStride %d", unexpected);
   if (format->findInt32(kKeySliceHeight, &unexpected))
     LOG("Expected kKeyHeight, but found kKeySliceHeight %d", unexpected);
 #endif // DEBUG
   const char *componentName;
   if (!format->findInt32(kKeyWidth, &mVideoStride) ||
       !format->findInt32(kKeyHeight, &mVideoSliceHeight) ||
       !format->findCString(kKeyDecoderComponent, &componentName) ||
       !format->findInt32(kKeyColorFormat, &mVideoColorFormat) ) {
     return false;
   }
   if (mVideoStride <= 0) {
     LOG("stride %d must be positive", mVideoStride);
     return false;
   }
   if (mVideoSliceHeight <= 0) {
     LOG("slice height %d must be positive", mVideoSliceHeight);
     return false;
   }
   // Gingerbread does not support the kKeyCropRect key
 #if !defined(MOZ_ANDROID_V2_X_X)
   if (!format->findRect(kKeyCropRect, &mVideoCropLeft, &mVideoCropTop,
                                       &mVideoCropRight, &mVideoCropBottom)) {
 #endif
     mVideoCropLeft = 0;
     mVideoCropTop = 0;
     mVideoCropRight = mVideoStride - 1;
     mVideoCropBottom = mVideoSliceHeight - 1;
     LOG("crop rect not available, assuming no cropping");
 #if !defined(MOZ_ANDROID_V2_X_X)
   }
 #endif
   if (mVideoCropLeft < 0 || mVideoCropLeft >= mVideoCropRight || mVideoCropRight >= mVideoStride ||
       mVideoCropTop < 0 || mVideoCropTop >= mVideoCropBottom || mVideoCropBottom >= mVideoSliceHeight) {
     LOG("invalid crop rect %d,%d-%d,%d", mVideoCropLeft, mVideoCropTop, mVideoCropRight, mVideoCropBottom);
     return false;
   }
   mVideoWidth = mVideoCropRight - mVideoCropLeft + 1;
   mVideoHeight = mVideoCropBottom - mVideoCropTop + 1;
   MOZ_ASSERT(mVideoWidth > 0 && mVideoWidth <= mVideoStride);
   MOZ_ASSERT(mVideoHeight > 0 && mVideoHeight <= mVideoSliceHeight);
 #if !defined(MOZ_ANDROID_FROYO)
   if (!format->findInt32(kKeyRotation, &mVideoRotation)) {
 #endif
     mVideoRotation = 0;
 #if !defined(MOZ_ANDROID_FROYO)
     LOG("rotation not available, assuming 0");
   }
 #endif
   if (mVideoRotation != 0 && mVideoRotation != 90 &&
       mVideoRotation != 180 && mVideoRotation != 270) {
     LOG("invalid rotation %d, assuming 0", mVideoRotation);
   }
   LOG("width: %d height: %d component: %s format: %#x stride: %d sliceHeight: %d rotation: %d crop: %d,%d-%d,%d",
       mVideoWidth, mVideoHeight, componentName, mVideoColorFormat,
       mVideoStride, mVideoSliceHeight, mVideoRotation,
       mVideoCropLeft, mVideoCropTop, mVideoCropRight, mVideoCropBottom);
   return true;
 }
 bool OmxDecoder::SetAudioFormat() {
   // If the format changed, update our cached info.
   if (!mAudioSource->getFormat()->findInt32(kKeyChannelCount, &mAudioChannels) ||
       !mAudioSource->getFormat()->findInt32(kKeySampleRate, &mAudioSampleRate)) {
     return false;
   }
   LOG("channelCount: %d sampleRate: %d", mAudioChannels, mAudioSampleRate);
   if (mAudioChannels < 0) {
     LOG("audio channel count %d must be nonnegative", mAudioChannels);
     return false;
   }
   if (mAudioSampleRate < 0) {
     LOG("audio sample rate %d must be nonnegative", mAudioSampleRate);
     return false;
   }
   return true;
 }
 void OmxDecoder::ReleaseVideoBuffer() {
   if (mVideoBuffer) {
     mVideoBuffer->release();
     mVideoBuffer = nullptr;
   }
 }
 void OmxDecoder::ReleaseAudioBuffer() {
   if (mAudioBuffer) {
     mAudioBuffer->release();
     mAudioBuffer = nullptr;
   }
 }
 void OmxDecoder::ToVideoFrame_YUV420Planar(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame) {
   void *y = aData;
   void *u = static_cast<uint8_t *>(y) + mVideoStride * mVideoSliceHeight;
   void *v = static_cast<uint8_t *>(u) + mVideoStride/2 * mVideoSliceHeight/2;
   aFrame->Set(aTimeUs, aKeyFrame,
               aData, aSize, mVideoStride, mVideoSliceHeight, mVideoRotation,
               y, mVideoStride, mVideoWidth, mVideoHeight, 0, 0,
               u, mVideoStride/2, mVideoWidth/2, mVideoHeight/2, 0, 0,
               v, mVideoStride/2, mVideoWidth/2, mVideoHeight/2, 0, 0);
 }
 void OmxDecoder::ToVideoFrame_CbYCrY(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame) {
   aFrame->Set(aTimeUs, aKeyFrame,
               aData, aSize, mVideoStride, mVideoSliceHeight, mVideoRotation,
               aData, mVideoStride, mVideoWidth, mVideoHeight, 1, 1,
               aData, mVideoStride, mVideoWidth/2, mVideoHeight/2, 0, 3,
               aData, mVideoStride, mVideoWidth/2, mVideoHeight/2, 2, 3);
 }
 void OmxDecoder::ToVideoFrame_YUV420SemiPlanar(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame) {
   int32_t videoStride = mVideoStride;
   int32_t videoSliceHeight = mVideoSliceHeight;
   // OMX.SEC.avcdec rounds mVideoStride and mVideoSliceHeight up to the nearest
   // multiple of 16 but the data itself is too small to fit. What we do is check
   // to see if the video size patches the raw width and height. If so we can
   // use those figures instead.
   if (static_cast<int>(aSize) == mVideoWidth * mVideoHeight * 3 / 2) {
     videoStride = mVideoWidth;
     videoSliceHeight = mVideoHeight;
   }
   void *y = aData;
   void *uv = static_cast<uint8_t *>(y) + (videoStride * videoSliceHeight);
   aFrame->Set(aTimeUs, aKeyFrame,
               aData, aSize, videoStride, videoSliceHeight, mVideoRotation,
               y, videoStride, mVideoWidth, mVideoHeight, 0, 0,
               uv, videoStride, mVideoWidth/2, mVideoHeight/2, 0, 1,
               uv, videoStride, mVideoWidth/2, mVideoHeight/2, 1, 1);
 }
 void OmxDecoder::ToVideoFrame_YVU420SemiPlanar(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame) {
   ToVideoFrame_YUV420SemiPlanar(aFrame, aTimeUs, aData, aSize, aKeyFrame);
   aFrame->Cb.mOffset = 1;
   aFrame->Cr.mOffset = 0;
 }
 void OmxDecoder::ToVideoFrame_YUV420PackedSemiPlanar(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame) {
   void *y = aData;
   void *uv = static_cast<uint8_t *>(y) + mVideoStride * (mVideoSliceHeight - mVideoCropTop/2);
   aFrame->Set(aTimeUs, aKeyFrame,
               aData, aSize, mVideoStride, mVideoSliceHeight, mVideoRotation,
               y, mVideoStride, mVideoWidth, mVideoHeight, 0, 0,
               uv, mVideoStride, mVideoWidth/2, mVideoHeight/2, 0, 1,
               uv, mVideoStride, mVideoWidth/2, mVideoHeight/2, 1, 1);
 }
 void OmxDecoder::ToVideoFrame_YVU420PackedSemiPlanar32m4ka(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame) {
   size_t roundedSliceHeight = (mVideoSliceHeight + 31) & ~31;
   size_t roundedStride = (mVideoStride + 31) & ~31;
   void *y = aData;
   void *uv = static_cast<uint8_t *>(y) + (roundedStride * roundedSliceHeight);
   aFrame->Set(aTimeUs, aKeyFrame,
               aData, aSize, mVideoStride, mVideoSliceHeight, mVideoRotation,
               y, mVideoStride, mVideoWidth, mVideoHeight, 0, 0,
               uv, mVideoStride, mVideoWidth/2, mVideoHeight/2, 1, 1,
               uv, mVideoStride, mVideoWidth/2, mVideoHeight/2, 0, 1);
 }
 bool OmxDecoder::ToVideoFrame_RGB565(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame, BufferCallback *aBufferCallback) {
   void *buffer = (*aBufferCallback)(mVideoWidth, mVideoHeight, MPAPI::RGB565);
   if (!buffer) {
     return false;
   }
   aFrame->mTimeUs = aTimeUs;
   memcpy(buffer, aData, mVideoWidth * mVideoHeight * 2);
   aFrame->mSize = mVideoWidth * mVideoHeight * 2;
   return true;
 }
 bool OmxDecoder::ToVideoFrame_ColorConverter(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame, BufferCallback *aBufferCallback) {
 #ifdef MOZ_ANDROID_HC
   return false;
 #else
   if (!mColorConverter) {
     mColorConverter = new ColorConverter((OMX_COLOR_FORMATTYPE)mVideoColorFormat,
                                          OMX_COLOR_Format16bitRGB565);
   }
   if (!mColorConverter->isValid()) {
     return false;
   }
   aFrame->mTimeUs = aTimeUs;
   void *buffer = (*aBufferCallback)(mVideoWidth, mVideoHeight, MPAPI::RGB565);
   if (!buffer) {
     return false;
   }
   aFrame->mSize = mVideoWidth * mVideoHeight * 2;
 #if defined(MOZ_ANDROID_V2_X_X)
   mColorConverter->convert(mVideoWidth, mVideoHeight,
                            aData, 0 /* srcSkip */,
                            buffer, mVideoWidth * 2);
 #else
   mColorConverter->convert(aData, mVideoStride, mVideoSliceHeight,
                            mVideoCropLeft, mVideoCropTop,
                            mVideoCropLeft + mVideoWidth - 1,
                            mVideoCropTop + mVideoHeight - 1,
                            buffer, mVideoWidth, mVideoHeight,
 , 0, mVideoWidth - 1, mVideoHeight - 1);
 #endif
   return true;
 #endif
 }
 bool OmxDecoder::ToVideoFrame_I420ColorConverter(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame, BufferCallback *aBufferCallback)
 {
 #if defined(MOZ_ANDROID_V4_OR_ABOVE)
   I420ColorConverter yuvConverter;
   if (!yuvConverter.isLoaded()) {
     return false;
   }
   if (yuvConverter.getDecoderOutputFormat() != mVideoColorFormat) {
     return false;
   }
   void *buffer = (*aBufferCallback)(mVideoWidth, mVideoHeight, MPAPI::I420);
   ARect crop = { mVideoCropLeft, mVideoCropTop, mVideoCropRight, mVideoCropBottom };
   int result = yuvConverter.convertDecoderOutputToI420(aData,
                                                        mVideoWidth,
                                                        mVideoHeight,
                                                        crop,
                                                        buffer);
   // result is 0 on success, -1 otherwise.
   if (result == OK) {
     aFrame->mTimeUs = aTimeUs;
     aFrame->mSize = mVideoWidth * mVideoHeight * 3 / 2;
   }
   return result == OK;
 #else
   return false;
 #endif
 }
 bool OmxDecoder::ToVideoFrame(VideoFrame *aFrame, int64_t aTimeUs, void *aData, size_t aSize, bool aKeyFrame, BufferCallback *aBufferCallback) {
   switch (mVideoColorFormat) {
 // Froyo support is best handled with the android color conversion code. I
 // get corrupted videos when using our own routines below.
 #if !defined(MOZ_ANDROID_FROYO)
   case OMX_COLOR_FormatYUV420Planar: // e.g. Asus Transformer, Stagefright's software decoder
     ToVideoFrame_YUV420Planar(aFrame, aTimeUs, aData, aSize, aKeyFrame);
     break;
   case OMX_COLOR_FormatCbYCrY: // e.g. Droid 1
     ToVideoFrame_CbYCrY(aFrame, aTimeUs, aData, aSize, aKeyFrame);
     break;
   case OMX_COLOR_FormatYUV420SemiPlanar: // e.g. Galaxy S III
     ToVideoFrame_YUV420SemiPlanar(aFrame, aTimeUs, aData, aSize, aKeyFrame);
     break;
   case OMX_QCOM_COLOR_FormatYVU420SemiPlanar: // e.g. Nexus One
     ToVideoFrame_YVU420SemiPlanar(aFrame, aTimeUs, aData, aSize, aKeyFrame);
     break;
   case OMX_QCOM_COLOR_FormatYVU420PackedSemiPlanar32m4ka: // e.g. Otoro
     ToVideoFrame_YVU420PackedSemiPlanar32m4ka(aFrame, aTimeUs, aData, aSize, aKeyFrame);
     break;
   case OMX_TI_COLOR_FormatYUV420PackedSemiPlanar: // e.g. Galaxy Nexus
     ToVideoFrame_YUV420PackedSemiPlanar(aFrame, aTimeUs, aData, aSize, aKeyFrame);
     break;
   case OMX_COLOR_Format16bitRGB565:
     return ToVideoFrame_RGB565(aFrame, aTimeUs, aData, aSize, aKeyFrame, aBufferCallback);
     break;
 #endif
   default:
     if (!ToVideoFrame_ColorConverter(aFrame, aTimeUs, aData, aSize, aKeyFrame, aBufferCallback) &&
         !ToVideoFrame_I420ColorConverter(aFrame, aTimeUs, aData, aSize, aKeyFrame, aBufferCallback)) {
       LOG("Unknown video color format: %#x", mVideoColorFormat);
       return false;
     }
   }
   return true;
 }
 bool OmxDecoder::ToAudioFrame(AudioFrame *aFrame, int64_t aTimeUs, void *aData, size_t aDataOffset, size_t aSize, int32_t aAudioChannels, int32_t aAudioSampleRate)
 {
   aFrame->Set(aTimeUs, reinterpret_cast<char *>(aData) + aDataOffset, aSize, aAudioChannels, aAudioSampleRate);
   return true;
 }
 class ReadOptions : public MediaSource::ReadOptions
 {
   // HTC have their own version of ReadOptions with extra fields. If we don't
   // have this here, HTCOMXCodec will corrupt our stack.
   uint32_t sadface[16];
 };
 bool OmxDecoder::ReadVideo(VideoFrame *aFrame, int64_t aSeekTimeUs,
                            BufferCallback *aBufferCallback)
 {
   MOZ_ASSERT(aSeekTimeUs >= -1);
   if (!mVideoSource.get())
     return false;
   ReleaseVideoBuffer();
   status_t err;
   if (aSeekTimeUs != -1) {
     ReadOptions options;
     options.setSeekTo(aSeekTimeUs);
     err = mVideoSource->read(&mVideoBuffer, &options);
   } else {
     err = mVideoSource->read(&mVideoBuffer);
   }
   aFrame->mSize = 0;
   if (err == OK && mVideoBuffer->range_length() > 0) {
     int64_t timeUs;
     int32_t keyFrame;
     if (!mVideoBuffer->meta_data()->findInt64(kKeyTime, &timeUs) ) {
       LOG("no frame time");
       return false;
     }
     if (timeUs < 0) {
       LOG("frame time %lld must be nonnegative", timeUs);
       return false;
     }
     if (!mVideoBuffer->meta_data()->findInt32(kKeyIsSyncFrame, &keyFrame)) {
        keyFrame = 0;
     }
     char *data = reinterpret_cast<char *>(mVideoBuffer->data()) + mVideoBuffer->range_offset();
     size_t length = mVideoBuffer->range_length();
     if (!ToVideoFrame(aFrame, timeUs, data, length, keyFrame, aBufferCallback)) {
       return false;
     }
   }
   else if (err == INFO_FORMAT_CHANGED) {
     // If the format changed, update our cached info.
     LOG("mVideoSource INFO_FORMAT_CHANGED");
     if (!SetVideoFormat())
       return false;
     else
       return ReadVideo(aFrame, aSeekTimeUs, aBufferCallback);
   }
   else if (err == ERROR_END_OF_STREAM) {
     LOG("mVideoSource END_OF_STREAM");
   }
   else if (err != OK) {
     LOG("mVideoSource ERROR %#x", err);
   }
   return err == OK;
 }
 bool OmxDecoder::ReadAudio(AudioFrame *aFrame, int64_t aSeekTimeUs)
 {
   MOZ_ASSERT(aSeekTimeUs >= -1);
   status_t err;
   if (mAudioMetadataRead && aSeekTimeUs == -1) {
     // Use the data read into the buffer during metadata time
     err = OK;
   }
   else {
     ReleaseAudioBuffer();
     if (aSeekTimeUs != -1) {
       ReadOptions options;
       options.setSeekTo(aSeekTimeUs);
       err = mAudioSource->read(&mAudioBuffer, &options);
     } else {
       err = mAudioSource->read(&mAudioBuffer);
     }
   }
   mAudioMetadataRead = false;
   aSeekTimeUs = -1;
   if (err == OK && mAudioBuffer->range_length() != 0) {
     int64_t timeUs;
     if (!mAudioBuffer->meta_data()->findInt64(kKeyTime, &timeUs)) {
       LOG("no frame time");
       return false;
     }
     if (timeUs < 0) {
       LOG("frame time %lld must be nonnegative", timeUs);
       return false;
     }
     return ToAudioFrame(aFrame, timeUs,
                         mAudioBuffer->data(),
                         mAudioBuffer->range_offset(),
                         mAudioBuffer->range_length(),
                         mAudioChannels, mAudioSampleRate);
   }
   else if (err == INFO_FORMAT_CHANGED) {
     // If the format changed, update our cached info.
     LOG("mAudioSource INFO_FORMAT_CHANGED");
     if (!SetAudioFormat())
       return false;
     else
       return ReadAudio(aFrame, aSeekTimeUs);
   }
   else if (err == ERROR_END_OF_STREAM) {
     LOG("mAudioSource END_OF_STREAM");
   }
   else if (err != OK) {
     LOG("mAudioSource ERROR %#x", err);
   }
   return err == OK;
 }
 static OmxDecoder *cast(Decoder *decoder) {
   return reinterpret_cast<OmxDecoder *>(decoder->mPrivate);
 }
 static void GetDuration(Decoder *aDecoder, int64_t *durationUs) {
   cast(aDecoder)->GetDuration(durationUs);
 }
 static void GetVideoParameters(Decoder *aDecoder, int32_t *width, int32_t *height) {
   cast(aDecoder)->GetVideoParameters(width, height);
 }
 static void GetAudioParameters(Decoder *aDecoder, int32_t *numChannels, int32_t *sampleRate) {
   cast(aDecoder)->GetAudioParameters(numChannels, sampleRate);
 }
 static bool HasVideo(Decoder *aDecoder) {
   return cast(aDecoder)->HasVideo();
 }
 static bool HasAudio(Decoder *aDecoder) {
   return cast(aDecoder)->HasAudio();
 }
 static bool ReadVideo(Decoder *aDecoder, VideoFrame *aFrame, int64_t aSeekTimeUs, BufferCallback *aBufferCallback)
 {
   return cast(aDecoder)->ReadVideo(aFrame, aSeekTimeUs, aBufferCallback);
 }
 static bool ReadAudio(Decoder *aDecoder, AudioFrame *aFrame, int64_t aSeekTimeUs)
 {
   return cast(aDecoder)->ReadAudio(aFrame, aSeekTimeUs);
 }
 static void DestroyDecoder(Decoder *aDecoder)
 {
   if (aDecoder->mPrivate)
     delete reinterpret_cast<OmxDecoder *>(aDecoder->mPrivate);
 }
 static bool Match(const char *aMimeChars, size_t aMimeLen, const char *aNeedle)
 {
   return !strncmp(aMimeChars, aNeedle, aMimeLen);
 }
 static const char* const gCodecs[] = {
   "avc1.42E01E",  // H.264 Constrained Baseline Profile Level 3.0
   "avc1.42001E",  // H.264 Baseline Profile Level 3.0
   "avc1.42001F",  // H.264 Baseline Profile Level 3.1
   "avc1.4D401E",  // H.264 Main Profile Level 3.0
   "avc1.4D401F",  // H.264 Main Profile Level 3.1
   "mp4a.40.2",    // AAC-LC
   nullptr
 };
 static bool CanDecode(const char *aMimeChars, size_t aMimeLen, const char* const**aCodecs)
 {
   if (!Match(aMimeChars, aMimeLen, "video/mp4") &&
       !Match(aMimeChars, aMimeLen, "audio/mp4") &&
       !Match(aMimeChars, aMimeLen, "audio/mpeg") &&
       !Match(aMimeChars, aMimeLen, "application/octet-stream")) { // file urls
     return false;
   }
   *aCodecs = gCodecs;
   return true;
 }
 static bool CreateDecoder(PluginHost *aPluginHost, Decoder *aDecoder, const char *aMimeChars, size_t aMimeLen)
 {
   OmxDecoder *omx = new OmxDecoder(aPluginHost, aDecoder);
   if (!omx || !omx->Init()) {
     if (omx)
       delete omx;
     return false;
   }
   aDecoder->mPrivate = omx;
   aDecoder->GetDuration = GetDuration;
   aDecoder->GetVideoParameters = GetVideoParameters;
   aDecoder->GetAudioParameters = GetAudioParameters;
   aDecoder->HasVideo = HasVideo;
   aDecoder->HasAudio = HasAudio;
   aDecoder->ReadVideo = ReadVideo;
   aDecoder->ReadAudio = ReadAudio;
   aDecoder->DestroyDecoder = DestroyDecoder;
   return true;
 }
 } // namespace OmxPlugin
 // Export the manifest so MPAPI can find our entry points.
 Manifest MOZ_EXPORT MPAPI_MANIFEST = {
   OmxPlugin::CanDecode,
   OmxPlugin::CreateDecoder
 };

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media/omx-plugin/OmxPlugin.cpp@97036ab72558 (annotated)

media/omx-plugin/OmxPlugin.cpp