21 #if HAVE_UTGETOSTYPEFROMSTRING
22 #include <CoreServices/CoreServices.h>
40 CVPixelBufferRef pixbuf = (CVPixelBufferRef)
frame->
data[3];
41 OSType pixel_format = CVPixelBufferGetPixelFormatType(pixbuf);
44 int linesize[4] = { 0 };
49 switch (pixel_format) {
53 #ifdef kCFCoreFoundationVersionNumber10_7
54 case kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange:
57 #if HAVE_KCVPIXELFORMATTYPE_420YPCBCR10BIPLANARVIDEORANGE
63 "%s: Unsupported pixel format: %s\n",
74 err = CVPixelBufferLockBaseAddress(pixbuf, kCVPixelBufferLock_ReadOnly);
75 if (err != kCVReturnSuccess) {
80 if (CVPixelBufferIsPlanar(pixbuf)) {
82 planes = CVPixelBufferGetPlaneCount(pixbuf);
84 data[
i] = CVPixelBufferGetBaseAddressOfPlane(pixbuf,
i);
85 linesize[
i] = CVPixelBufferGetBytesPerRowOfPlane(pixbuf,
i);
88 data[0] = CVPixelBufferGetBaseAddress(pixbuf);
89 linesize[0] = CVPixelBufferGetBytesPerRow(pixbuf);
97 CVPixelBufferUnlockBaseAddress(pixbuf, kCVPixelBufferLock_ReadOnly);
147 CFStringRef pixfmt_str = CFStringCreateWithCString(kCFAllocatorDefault,
149 kCFStringEncodingUTF8);
150 #if HAVE_UTGETOSTYPEFROMSTRING
153 av_log(
s, loglevel,
"UTGetOSTypeFromString() is not available "
154 "on this platform, %s pixel format can not be honored from "
158 CFRelease(pixfmt_str);
161 av_log(
NULL, loglevel,
"Error creating Videotoolbox decoder.\n");
Libavcodec external API header.
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
int av_frame_get_buffer(AVFrame *frame, int align)
Allocate new buffer(s) for audio or video data.
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
#define AV_LOG_VERBOSE
Detailed information.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
#define av_fourcc2str(fourcc)
void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], const uint8_t *src_data[4], const int src_linesizes[4], enum AVPixelFormat pix_fmt, int width, int height)
Copy image in src_data to dst_data.
static const struct @322 planes[]
@ AV_PIX_FMT_NV12
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
@ AV_PIX_FMT_BGRA
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
@ AV_PIX_FMT_UYVY422
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
main external API structure.
This structure describes decoded (raw) audio or video data.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
This struct holds all the information that needs to be passed between the caller and libavcodec for i...
OSType cv_pix_fmt_type
CVPixelBuffer Format Type that Videotoolbox will use for decoded frames.