void CDVDVideoCodecVDA::VDADecoderCallback(
void *decompressionOutputRefCon,
CFDictionaryRef frameInfo,
OSStatus status,
uint32_t infoFlags,
CVImageBufferRef imageBuffer)
{
CCocoaAutoPool pool;
// Warning, this is an async callback. There can be multiple frames in flight.
CDVDVideoCodecVDA *ctx = (CDVDVideoCodecVDA*)decompressionOutputRefCon;
if (imageBuffer == NULL)
{
//CLog::Log(LOGDEBUG, "%s - imageBuffer is NULL", __FUNCTION__);
return;
}
OSType format_type = CVPixelBufferGetPixelFormatType(imageBuffer);
if ((format_type != kCVPixelFormatType_422YpCbCr8) &&
(format_type != kCVPixelFormatType_32BGRA) )
{
CLog::Log(LOGERROR, "%s - imageBuffer format is not '2vuy' or 'BGRA',is reporting 0x%x",
__FUNCTION__, (unsigned int)format_type);
return;
}
if (kVDADecodeInfo_FrameDropped & infoFlags)
{
if (g_advancedSettings.CanLogComponent(LOGVIDEO))
CLog::Log(LOGDEBUG, "%s - frame dropped", __FUNCTION__);
return;
}
// allocate a new frame and populate it with some information.
// this pointer to a frame_queue type keeps track of the newest decompressed frame
// and is then inserted into a linked list of frame pointers depending on the display time
// parsed out of the bitstream and stored in the frameInfo dictionary by the client
frame_queue *newFrame = (frame_queue*)calloc(sizeof(frame_queue), 1);
newFrame->nextframe = NULL;
newFrame->pixel_buffer_format = format_type;
newFrame->pixel_buffer_ref = CVBufferRetain(imageBuffer);
GetFrameDisplayTimeFromDictionary(frameInfo, newFrame);
// since the frames we get may be in decode order rather than presentation order
// our hypothetical callback places them in a queue of frames which will
// hold them in display order for display on another thread
pthread_mutex_lock(&ctx->m_queue_mutex);
frame_queue base;
base.nextframe = ctx->m_display_queue;
frame_queue *ptr = &base;
for(; ptr->nextframe; ptr = ptr->nextframe)
{
if(ptr->nextframe->pts == DVD_NOPTS_VALUE
|| newFrame->pts == DVD_NOPTS_VALUE)
continue;
if(ptr->nextframe->pts > newFrame->pts)
break;
}
/* insert after ptr */
newFrame->nextframe = ptr->nextframe;
ptr->nextframe = newFrame;
/* update anchor if needed */
if(newFrame->nextframe == ctx->m_display_queue)
ctx->m_display_queue = newFrame;
ctx->m_queue_depth++;
//
pthread_mutex_unlock(&ctx->m_queue_mutex);
}
void CDVDVideoCodecVDA::VDADecoderCallback(
void *decompressionOutputRefCon,
CFDictionaryRef frameInfo,
OSStatus status,
uint32_t infoFlags,
CVImageBufferRef imageBuffer)
{
CCocoaAutoPool pool;
// Warning, this is an async callback. There can be multiple frames in flight.
CDVDVideoCodecVDA *ctx = (CDVDVideoCodecVDA*)decompressionOutputRefCon;
if (imageBuffer == NULL)
{
//CLog::Log(LOGDEBUG, "%s - imageBuffer is NULL", __FUNCTION__);
return;
}
OSType format_type = CVPixelBufferGetPixelFormatType(imageBuffer);
if ((format_type != kCVPixelFormatType_422YpCbCr8) && (format_type != kCVPixelFormatType_32BGRA) )
{
CLog::Log(LOGERROR, "%s - imageBuffer format is not '2vuy' or 'BGRA',is reporting 0x%x",
__FUNCTION__, format_type);
return;
}
if (kVDADecodeInfo_FrameDropped & infoFlags)
{
CLog::Log(LOGDEBUG, "%s - frame dropped", __FUNCTION__);
return;
}
// allocate a new frame and populate it with some information.
// this pointer to a frame_queue type keeps track of the newest decompressed frame
// and is then inserted into a linked list of frame pointers depending on the display time
// parsed out of the bitstream and stored in the frameInfo dictionary by the client
frame_queue *newFrame = (frame_queue*)calloc(sizeof(frame_queue), 1);
newFrame->nextframe = NULL;
newFrame->pixel_buffer_format = format_type;
newFrame->pixel_buffer_ref = CVPixelBufferRetain(imageBuffer);
GetFrameDisplayTimeFromDictionary(frameInfo, newFrame);
// if both dts or pts are good we use those, else use decoder insert time for frame sort
if ((newFrame->pts != DVD_NOPTS_VALUE) || (newFrame->dts != DVD_NOPTS_VALUE))
{
// if pts is borked (stupid avi's), use dts for frame sort
if (newFrame->pts == DVD_NOPTS_VALUE)
newFrame->sort_time = newFrame->dts;
else
newFrame->sort_time = newFrame->pts;
}
// since the frames we get may be in decode order rather than presentation order
// our hypothetical callback places them in a queue of frames which will
// hold them in display order for display on another thread
pthread_mutex_lock(&ctx->m_queue_mutex);
//
frame_queue *queueWalker = ctx->m_display_queue;
if (!queueWalker || (newFrame->sort_time < queueWalker->sort_time))
{
// we have an empty queue, or this frame earlier than the current queue head.
newFrame->nextframe = queueWalker;
ctx->m_display_queue = newFrame;
} else {
// walk the queue and insert this frame where it belongs in display order.
bool frameInserted = false;
frame_queue *nextFrame = NULL;
//
while (!frameInserted)
{
nextFrame = queueWalker->nextframe;
if (!nextFrame || (newFrame->sort_time < nextFrame->sort_time))
{
// if the next frame is the tail of the queue, or our new frame is earlier.
newFrame->nextframe = nextFrame;
queueWalker->nextframe = newFrame;
frameInserted = true;
}
queueWalker = nextFrame;
}
}
ctx->m_queue_depth++;
//
pthread_mutex_unlock(&ctx->m_queue_mutex);
}
