mirror of https://git.ffmpeg.org/ffmpeg.git
272 lines
8.1 KiB
C
272 lines
8.1 KiB
C
|
/*
|
||
|
* VDA HW acceleration.
|
||
|
*
|
||
|
* copyright (c) 2011 Sebastien Zwickert
|
||
|
*
|
||
|
* This file is part of FFmpeg.
|
||
|
*
|
||
|
* FFmpeg is free software; you can redistribute it and/or
|
||
|
* modify it under the terms of the GNU Lesser General Public
|
||
|
* License as published by the Free Software Foundation; either
|
||
|
* version 2.1 of the License, or (at your option) any later version.
|
||
|
*
|
||
|
* FFmpeg is distributed in the hope that it will be useful,
|
||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
* Lesser General Public License for more details.
|
||
|
*
|
||
|
* You should have received a copy of the GNU Lesser General Public
|
||
|
* License along with FFmpeg; if not, write to the Free Software
|
||
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
*/
|
||
|
|
||
|
#include "vda_internal.h"
|
||
|
|
||
|
/**
|
||
|
* \addtogroup VDA_Decoding
|
||
|
*
|
||
|
* @{
|
||
|
*/
|
||
|
|
||
|
/* Mutex manager callback. */
|
||
|
static int vda_lock_operation(void **mtx, enum AVLockOp op)
|
||
|
{
|
||
|
switch(op)
|
||
|
{
|
||
|
case AV_LOCK_CREATE:
|
||
|
*mtx = av_malloc(sizeof(pthread_mutex_t));
|
||
|
if(!*mtx)
|
||
|
return 1;
|
||
|
return !!pthread_mutex_init(*mtx, NULL);
|
||
|
case AV_LOCK_OBTAIN:
|
||
|
return !!pthread_mutex_lock(*mtx);
|
||
|
case AV_LOCK_RELEASE:
|
||
|
return !!pthread_mutex_unlock(*mtx);
|
||
|
case AV_LOCK_DESTROY:
|
||
|
pthread_mutex_destroy(*mtx);
|
||
|
av_freep(mtx);
|
||
|
return 0;
|
||
|
}
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
/* Helper to create a dictionary according to the given pts. */
|
||
|
static CFDictionaryRef vda_dictionary_with_pts(int64_t i_pts)
|
||
|
{
|
||
|
CFStringRef key = CFSTR("FF_VDA_DECODER_PTS_KEY");
|
||
|
CFNumberRef value = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt64Type, &i_pts);
|
||
|
CFDictionaryRef user_info = CFDictionaryCreate( kCFAllocatorDefault,
|
||
|
(const void **)&key,
|
||
|
(const void **)&value,
|
||
|
1,
|
||
|
&kCFTypeDictionaryKeyCallBacks,
|
||
|
&kCFTypeDictionaryValueCallBacks);
|
||
|
CFRelease(value);
|
||
|
return user_info;
|
||
|
}
|
||
|
|
||
|
/* Helper to retrieve the pts from the given dictionary. */
|
||
|
static int64_t vda_pts_from_dictionary(CFDictionaryRef user_info)
|
||
|
{
|
||
|
CFNumberRef pts;
|
||
|
int64_t outValue = 0;
|
||
|
|
||
|
if (NULL == user_info)
|
||
|
return 0;
|
||
|
|
||
|
pts = CFDictionaryGetValue(user_info, CFSTR("FF_VDA_DECODER_PTS_KEY"));
|
||
|
|
||
|
if (pts)
|
||
|
CFNumberGetValue(pts, kCFNumberSInt64Type, &outValue);
|
||
|
|
||
|
return outValue;
|
||
|
}
|
||
|
|
||
|
/* Removes and releases all frames from the queue. */
|
||
|
static void vda_clear_queue(struct vda_context *vda_ctx)
|
||
|
{
|
||
|
vda_frame *top_frame;
|
||
|
|
||
|
vda_lock_operation(&vda_ctx->queue_mutex, AV_LOCK_OBTAIN);
|
||
|
|
||
|
while (vda_ctx->queue != NULL)
|
||
|
{
|
||
|
top_frame = vda_ctx->queue;
|
||
|
vda_ctx->queue = top_frame->next_frame;
|
||
|
ff_vda_release_vda_frame(top_frame);
|
||
|
}
|
||
|
|
||
|
vda_lock_operation(&vda_ctx->queue_mutex, AV_LOCK_RELEASE);
|
||
|
}
|
||
|
|
||
|
|
||
|
/* Decoder callback that adds the vda frame to the queue in display order. */
|
||
|
static void vda_decoder_callback (void *vda_hw_ctx,
|
||
|
CFDictionaryRef user_info,
|
||
|
OSStatus status,
|
||
|
uint32_t infoFlags,
|
||
|
CVImageBufferRef image_buffer)
|
||
|
{
|
||
|
struct vda_context *vda_ctx = (struct vda_context*)vda_hw_ctx;
|
||
|
vda_frame *new_frame;
|
||
|
vda_frame *queue_walker;
|
||
|
|
||
|
if (NULL == image_buffer)
|
||
|
return;
|
||
|
|
||
|
if (kCVPixelFormatType_422YpCbCr8 != CVPixelBufferGetPixelFormatType(image_buffer))
|
||
|
return;
|
||
|
|
||
|
new_frame = (vda_frame *)av_mallocz(sizeof(vda_frame));
|
||
|
new_frame->next_frame = NULL;
|
||
|
new_frame->cv_buffer = CVPixelBufferRetain(image_buffer);
|
||
|
new_frame->pts = vda_pts_from_dictionary(user_info);
|
||
|
|
||
|
vda_lock_operation(&vda_ctx->queue_mutex, AV_LOCK_OBTAIN);
|
||
|
|
||
|
queue_walker = vda_ctx->queue;
|
||
|
|
||
|
if (!queue_walker || (new_frame->pts < queue_walker->pts))
|
||
|
{
|
||
|
/* we have an empty queue, or this frame earlier than the current queue head */
|
||
|
new_frame->next_frame = queue_walker;
|
||
|
vda_ctx->queue = new_frame;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
/* walk the queue and insert this frame where it belongs in display order */
|
||
|
vda_frame *next_frame;
|
||
|
|
||
|
while (1)
|
||
|
{
|
||
|
next_frame = queue_walker->next_frame;
|
||
|
|
||
|
if (!next_frame || (new_frame->pts < next_frame->pts))
|
||
|
{
|
||
|
new_frame->next_frame = next_frame;
|
||
|
queue_walker->next_frame = new_frame;
|
||
|
break;
|
||
|
}
|
||
|
queue_walker = next_frame;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
vda_lock_operation(&vda_ctx->queue_mutex, AV_LOCK_RELEASE);
|
||
|
}
|
||
|
|
||
|
int ff_vda_create_decoder(struct vda_context *vda_ctx,
|
||
|
uint8_t *extradata,
|
||
|
int extradata_size)
|
||
|
{
|
||
|
OSStatus status = kVDADecoderNoErr;
|
||
|
CFNumberRef height;
|
||
|
CFNumberRef width;
|
||
|
CFNumberRef format;
|
||
|
CFDataRef avc_data;
|
||
|
CFMutableDictionaryRef config_info;
|
||
|
|
||
|
if (av_lockmgr_register(vda_lock_operation))
|
||
|
return -1;
|
||
|
|
||
|
vda_lock_operation(&vda_ctx->queue_mutex, AV_LOCK_CREATE);
|
||
|
|
||
|
config_info = (CFDictionaryCreateMutable(kCFAllocatorDefault,
|
||
|
4,
|
||
|
&kCFTypeDictionaryKeyCallBacks,
|
||
|
&kCFTypeDictionaryValueCallBacks));
|
||
|
|
||
|
height = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &vda_ctx->height);
|
||
|
width = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &vda_ctx->width);
|
||
|
format = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &vda_ctx->format);
|
||
|
avc_data = CFDataCreate(kCFAllocatorDefault, extradata, extradata_size);
|
||
|
|
||
|
CFDictionarySetValue(config_info, kVDADecoderConfiguration_Height, height);
|
||
|
CFDictionarySetValue(config_info, kVDADecoderConfiguration_Width, width);
|
||
|
CFDictionarySetValue(config_info, kVDADecoderConfiguration_SourceFormat, format);
|
||
|
CFDictionarySetValue(config_info, kVDADecoderConfiguration_avcCData, avc_data);
|
||
|
|
||
|
status = VDADecoderCreate( config_info,
|
||
|
NULL,
|
||
|
(VDADecoderOutputCallback *)vda_decoder_callback,
|
||
|
(void *)vda_ctx,
|
||
|
&vda_ctx->decoder );
|
||
|
|
||
|
CFRelease(height);
|
||
|
CFRelease(width);
|
||
|
CFRelease(format);
|
||
|
CFRelease(avc_data);
|
||
|
CFRelease(config_info);
|
||
|
|
||
|
if (kVDADecoderNoErr != status)
|
||
|
return status;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
int ff_vda_destroy_decoder(struct vda_context *vda_ctx)
|
||
|
{
|
||
|
OSStatus status = kVDADecoderNoErr;
|
||
|
|
||
|
if (vda_ctx->decoder)
|
||
|
status = VDADecoderDestroy(vda_ctx->decoder);
|
||
|
|
||
|
vda_clear_queue(vda_ctx);
|
||
|
|
||
|
if (vda_ctx->queue_mutex != NULL)
|
||
|
vda_lock_operation(&vda_ctx->queue_mutex, AV_LOCK_DESTROY);
|
||
|
|
||
|
if (kVDADecoderNoErr != status)
|
||
|
return status;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
vda_frame *ff_vda_queue_pop(struct vda_context *vda_ctx)
|
||
|
{
|
||
|
vda_frame *top_frame;
|
||
|
|
||
|
if (!vda_ctx->queue)
|
||
|
return NULL;
|
||
|
|
||
|
vda_lock_operation(&vda_ctx->queue_mutex, AV_LOCK_OBTAIN);
|
||
|
top_frame = vda_ctx->queue;
|
||
|
vda_ctx->queue = top_frame->next_frame;
|
||
|
vda_lock_operation(&vda_ctx->queue_mutex, AV_LOCK_RELEASE);
|
||
|
|
||
|
return top_frame;
|
||
|
}
|
||
|
|
||
|
void ff_vda_release_vda_frame(vda_frame *frame)
|
||
|
{
|
||
|
if (frame != NULL)
|
||
|
{
|
||
|
CVPixelBufferRelease(frame->cv_buffer);
|
||
|
av_freep(&frame);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
int ff_vda_decoder_decode(struct vda_context *vda_ctx,
|
||
|
uint8_t *bitstream,
|
||
|
int bitstream_size,
|
||
|
int64_t frame_pts)
|
||
|
{
|
||
|
OSStatus status = kVDADecoderNoErr;
|
||
|
CFDictionaryRef user_info;
|
||
|
CFDataRef coded_frame;
|
||
|
|
||
|
coded_frame = CFDataCreate(kCFAllocatorDefault, bitstream, bitstream_size);
|
||
|
user_info = vda_dictionary_with_pts(frame_pts);
|
||
|
|
||
|
status = VDADecoderDecode(vda_ctx->decoder, 0, coded_frame, user_info);
|
||
|
|
||
|
CFRelease(user_info);
|
||
|
CFRelease(coded_frame);
|
||
|
|
||
|
if (kVDADecoderNoErr != status)
|
||
|
return status;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/* @} */
|