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Fixed an issue in VideoFFmpegComponent that could lead to a crash.

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Also renamed a function in VideoFFmpegComponent.
This commit is contained in:
Leon Styhre 2021-05-10 18:08:45 +02:00
parent b87d7238fc
commit d9eda97ca6
2 changed files with 23 additions and 19 deletions
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38
es-core/src/components/VideoFFmpegComponent.cpp
View file

@ -181,7 +181,7 @@ void VideoFFmpegComponent::update(int deltaTime)
if (!mEndOfVideo && mIsActuallyPlaying && mVideoFrameQueue.empty() && mAudioFrameQueue.empty())
mEndOfVideo = true;
processFrames();
outputFrames();
}
void VideoFFmpegComponent::readFrames()
@ -195,8 +195,9 @@ void VideoFFmpegComponent::readFrames()
!avcodec_receive_frame(mVideoCodecContext, mVideoFrame)) {
// We have a video frame that needs conversion to RGBA format.
int dst_linesize[4];
uint8_t* frameRGB[4];
uint8_t* frameRGBA[4];
int lineSizes[4];
int allocatedSize = 0;
// The pts value is the presentation time, i.e. the time stamp when
// the frame (picture) should be displayed.
@ -210,21 +211,21 @@ void VideoFFmpegComponent::readFrames()
// Conversion using libswscale. Bicubic interpolation gives a good
// balance between speed and image quality.
struct SwsContext* conversionContext =
sws_getContext(mVideoCodecContext->width,
mVideoCodecContext->height,
struct SwsContext* conversionContext = sws_getContext(
mVideoCodecContext->coded_width,
mVideoCodecContext->coded_height,
mVideoCodecContext->pix_fmt,
mVideoCodecContext->width,
mVideoCodecContext->height,
mVideoFrame->width,
mVideoFrame->height,
AV_PIX_FMT_RGBA,
SWS_BICUBIC,
nullptr,
nullptr,
nullptr);
av_image_alloc(
frameRGB,
dst_linesize,
allocatedSize = av_image_alloc(
frameRGBA,
lineSizes,
mVideoFrame->width,
mVideoFrame->height,
AV_PIX_FMT_RGB32,
@ -235,22 +236,23 @@ void VideoFFmpegComponent::readFrames()
const_cast<uint8_t const* const*>(mVideoFrame->data),
mVideoFrame->linesize,
0,
mVideoCodecContext->height,
frameRGB,
dst_linesize);
mVideoCodecContext->coded_height,
frameRGBA,
lineSizes);
VideoFrame currFrame;
// Save the frame into the queue for later processing.
currFrame.width = mVideoFrame->width;
currFrame.height = mVideoFrame->height;
currFrame.frameRGBA.insert(currFrame.frameRGBA.begin(), &frameRGB[0][0],
&frameRGB[0][currFrame.width * currFrame.height * 4]);
currFrame.frameRGBA.insert(currFrame.frameRGBA.begin(),
&frameRGBA[0][0], &frameRGBA[0][allocatedSize - 1]);
currFrame.pts = pts;
mVideoFrameQueue.push(currFrame);
av_freep(&frameRGB[0]);
av_freep(&frameRGBA[0]);
sws_freeContext(conversionContext);
av_packet_unref(mPacket);
break;
@ -406,7 +408,7 @@ void VideoFFmpegComponent::readFrames()
}
}
void VideoFFmpegComponent::processFrames()
void VideoFFmpegComponent::outputFrames()
{
// Check if we should start counting the time (i.e. start playing the video).
// The audio stream controls when the playback and time counting starts, assuming

4
es-core/src/components/VideoFFmpegComponent.h
View file

@ -51,8 +51,10 @@ private:
void render(const Transform4x4f& parentTrans) override;
void update(int deltaTime) override;
// Read frames from the video file and perform format conversion.
void readFrames();
void processFrames();
// Output frames to AudioManager and to the video surface.
void outputFrames();
void calculateBlackRectangle();