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Commit 84c306e2 authored by Felix Paul Kühne's avatar Felix Paul Kühne
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videotoolbox: re-write frame reordering

parent 963fdfcf
Show whitespace changes
Inline Side-by-side
Showing with 69 additions and 75 deletions
modules/codec/videotoolbox.m
View file @ 84c306e2
......@@ -78,16 +78,6 @@ static void copy420YpCbCr8Planar(picture_t *, CVPixelBufferRef buffer,
unsigned i_width, unsigned i_height);
static BOOL deviceSupportsAdvancedProfiles();
@interface VTStorageObject : NSObject
@property (retain) NSMutableArray *outputFrames;
@property (retain) NSMutableArray *presentationTimes;
@end
@implementation VTStorageObject
@end
#pragma mark - decoder structure
struct decoder_sys_t
......@@ -101,7 +91,8 @@ struct decoder_sys_t
VTDecompressionSessionRef session;
CMVideoFormatDescriptionRef videoFormatDescription;
VTStorageObject *storageObject;
NSMutableArray *outputTimeStamps;
NSMutableDictionary *outputFrames;
};
#pragma mark - start & stop
......@@ -258,8 +249,7 @@ static int StartVideoToolbox(decoder_t *p_dec, block_t *p_block)
size = p_dec->fmt_in.i_extra;
p_alloc_buf = p_buf = malloc(buf_size);
if (!p_buf)
{
if (!p_buf) {
msg_Warn(p_dec, "extra buffer allocation failed");
return VLC_ENOMEM;
}
......@@ -302,8 +292,7 @@ static int StartVideoToolbox(decoder_t *p_dec, block_t *p_block)
&i_sps_size,
&p_pps_buf,
&i_pps_size);
if (i_ret != VLC_SUCCESS)
{
if (i_ret != VLC_SUCCESS) {
msg_Warn(p_dec, "sps pps parsing failed");
free(p_alloc_buf);
return VLC_EGENERIC;
......@@ -314,8 +303,7 @@ static int StartVideoToolbox(decoder_t *p_dec, block_t *p_block)
i_sps_size,
&sps_data);
if (i_ret != VLC_SUCCESS)
{
if (i_ret != VLC_SUCCESS) {
free(p_alloc_buf);
return VLC_EGENERIC;
}
......@@ -494,11 +482,6 @@ static int StartVideoToolbox(decoder_t *p_dec, block_t *p_block)
kCVPixelBufferBytesPerRowAlignmentKey,
i_video_width * 2);
/* setup storage */
p_sys->storageObject = [[VTStorageObject alloc] init];
p_sys->storageObject.outputFrames = [[NSMutableArray alloc] init];
p_sys->storageObject.presentationTimes = [[NSMutableArray alloc] init];
/* setup decoder callback record */
VTDecompressionOutputCallbackRecord decoderCallbackRecord;
decoderCallbackRecord.decompressionOutputCallback = DecoderCallback;
......@@ -575,6 +558,12 @@ static int StartVideoToolbox(decoder_t *p_dec, block_t *p_block)
decoder_UpdateVideoFormat(p_dec);
}
/* setup storage */
p_sys->outputTimeStamps = [[NSMutableArray alloc] init];
p_sys->outputFrames = [[NSMutableDictionary alloc] init];
if (!p_sys->outputFrames)
return VLC_ENOMEM;
p_sys->b_started = YES;
return VLC_SUCCESS;
......@@ -585,6 +574,9 @@ static void StopVideoToolbox(decoder_t *p_dec)
decoder_sys_t *p_sys = p_dec->p_sys;
if (p_sys->b_started) {
p_sys->outputTimeStamps = nil;
p_sys->outputFrames = nil;
p_sys->b_started = false;
if (p_sys->session != nil) {
VTDecompressionSessionInvalidate(p_sys->session);
......@@ -894,7 +886,9 @@ static picture_t *DecodeBlock(decoder_t *p_dec, block_t **pp_block)
p_block = *pp_block;
if (likely(p_block)) {
if (unlikely(p_block->i_flags&(BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED))) { // p_block->i_dts < VLC_TS_INVALID ||
if (unlikely(p_block->i_flags&(BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED))) {
[p_sys->outputTimeStamps removeAllObjects];
[p_sys->outputFrames removeAllObjects];
block_Release(p_block);
goto skip;
}
......@@ -968,15 +962,31 @@ skip:
*pp_block = NULL;
if ([p_sys->storageObject.outputFrames count] && [p_sys->storageObject.presentationTimes count]) {
NSUInteger outputFramesCount = [p_sys->outputFrames count];
if (outputFramesCount > 5) {
CVPixelBufferRef imageBuffer = NULL;
NSNumber *framePTS = nil;
id imageBufferObject = nil;
picture_t *p_pic = NULL;
@synchronized(p_sys->storageObject) {
framePTS = [p_sys->storageObject.presentationTimes firstObject];
imageBufferObject = [p_sys->storageObject.outputFrames firstObject];
NSString *timeStamp;
@synchronized(p_sys->outputTimeStamps) {
[p_sys->outputTimeStamps sortUsingComparator:^(id obj1, id obj2) {
if ([obj1 longLongValue] > [obj2 longLongValue]) {
return (NSComparisonResult)NSOrderedDescending;
}
if ([obj1 longLongValue] < [obj2 longLongValue]) {
return (NSComparisonResult)NSOrderedAscending;
}
return (NSComparisonResult)NSOrderedSame;
}];
timeStamp = [p_sys->outputTimeStamps firstObject];
[p_sys->outputTimeStamps removeObjectAtIndex:0];
}
@synchronized(p_sys->outputFrames) {
imageBufferObject = [p_sys->outputFrames objectForKey:timeStamp];
}
imageBuffer = (__bridge CVPixelBufferRef)imageBufferObject;
if (imageBuffer != NULL) {
......@@ -992,13 +1002,12 @@ skip:
CVPixelBufferGetWidthOfPlane(imageBuffer, 0),
CVPixelBufferGetHeightOfPlane(imageBuffer, 0));
p_pic->date = framePTS.longLongValue;
p_pic->date = timeStamp.longLongValue;
if (imageBufferObject)
[p_sys->storageObject.outputFrames removeObjectAtIndex:0];
if (framePTS)
[p_sys->storageObject.presentationTimes removeObjectAtIndex:0];
if (imageBufferObject) {
@synchronized(p_sys->outputFrames) {
[p_sys->outputFrames removeObjectForKey:timeStamp];
}
}
}
}
......@@ -1046,38 +1055,23 @@ static void DecoderCallback(void *decompressionOutputRefCon,
return;
}
NSNumber *framePTS = nil;
NSString *timeStamp = nil;
if (CMTIME_IS_VALID(pts))
framePTS = [NSNumber numberWithLongLong:pts.value];
timeStamp = [[NSNumber numberWithLongLong:pts.value] stringValue];
else {
msg_Dbg(p_dec, "invalid timestamp, dropping frame");
CFRelease(imageBuffer);
return;
}
if (framePTS) {
@synchronized(p_sys->storageObject) {
if (timeStamp) {
id imageBufferObject = (__bridge id)imageBuffer;
BOOL shouldStop = YES;
NSInteger insertionIndex = [p_sys->storageObject.presentationTimes count] - 1;
while (insertionIndex >= 0 && shouldStop == NO) {
NSNumber *aNumber = p_sys->storageObject.presentationTimes[insertionIndex];
if ([aNumber longLongValue] <= [framePTS longLongValue]) {
shouldStop = YES;
break;
}
insertionIndex--;
}
/* re-order frames on presentation times using a double mutable array structure */
if (insertionIndex + 1 == [p_sys->storageObject.presentationTimes count]) {
[p_sys->storageObject.presentationTimes addObject:framePTS];
[p_sys->storageObject.outputFrames addObject:imageBufferObject];
} else {
[p_sys->storageObject.presentationTimes insertObject:framePTS atIndex:insertionIndex + 1];
[p_sys->storageObject.outputFrames insertObject:framePTS atIndex:insertionIndex + 1];
@synchronized(p_sys->outputTimeStamps) {
[p_sys->outputTimeStamps addObject:timeStamp];
}
@synchronized(p_sys->outputFrames) {
[p_sys->outputFrames setObject:imageBufferObject forKey:timeStamp];
}
}
}
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