hwcontext_videotoolbox.c File Reference

#include "config.h"
#include <stdint.h>
#include <string.h>
#include <VideoToolbox/VideoToolbox.h>
#include "buffer.h"
#include "buffer_internal.h"
#include "common.h"
#include "hwcontext.h"
#include "hwcontext_internal.h"
#include "hwcontext_videotoolbox.h"
#include "mem.h"
#include "pixfmt.h"
#include "pixdesc.h"

Go to the source code of this file.

Data Structures
struct	VTFramesContext

Functions
static int	vt_frames_get_constraints (AVHWDeviceContext *ctx, const void *hwconfig, AVHWFramesConstraints *constraints)
enum AVPixelFormat	av_map_videotoolbox_format_to_pixfmt (uint32_t cv_fmt)
	Convert a VideoToolbox (actually CoreVideo) format to AVPixelFormat. More...
uint32_t	av_map_videotoolbox_format_from_pixfmt (enum AVPixelFormat pix_fmt)
	Convert an AVPixelFormat to a VideoToolbox (actually CoreVideo) format. More...
uint32_t	av_map_videotoolbox_format_from_pixfmt2 (enum AVPixelFormat pix_fmt, bool full_range)
	Same as av_map_videotoolbox_format_from_pixfmt function, but can map and return full range pixel formats via a flag. More...
static int	vt_pool_alloc (AVHWFramesContext *ctx)
static void	videotoolbox_buffer_release (void *opaque, uint8_t *data)
static AVBufferRef *	vt_pool_alloc_buffer (void *opaque, size_t size)
static void	vt_frames_uninit (AVHWFramesContext *ctx)
static int	vt_frames_init (AVHWFramesContext *ctx)
static int	vt_get_buffer (AVHWFramesContext *ctx, AVFrame *frame)
static int	vt_transfer_get_formats (AVHWFramesContext *ctx, enum AVHWFrameTransferDirection dir, enum AVPixelFormat **formats)
static void	vt_unmap (AVHWFramesContext *ctx, HWMapDescriptor *hwmap)
static int	vt_pixbuf_set_par (void *log_ctx, CVPixelBufferRef pixbuf, const AVFrame *src)
CFStringRef	av_map_videotoolbox_chroma_loc_from_av (enum AVChromaLocation loc)
	Convert an AVChromaLocation to a VideoToolbox/CoreVideo chroma location string. More...
static int	vt_pixbuf_set_chromaloc (void *log_ctx, CVPixelBufferRef pixbuf, const AVFrame *src)
CFStringRef	av_map_videotoolbox_color_matrix_from_av (enum AVColorSpace space)
	Convert an AVColorSpace to a VideoToolbox/CoreVideo color matrix string. More...
CFStringRef	av_map_videotoolbox_color_primaries_from_av (enum AVColorPrimaries pri)
	Convert an AVColorPrimaries to a VideoToolbox/CoreVideo color primaries string. More...
CFStringRef	av_map_videotoolbox_color_trc_from_av (enum AVColorTransferCharacteristic trc)
	Convert an AVColorTransferCharacteristic to a VideoToolbox/CoreVideo color transfer function string. More...
static int	vt_pixbuf_set_colorspace (void *log_ctx, CVPixelBufferRef pixbuf, const AVFrame *src)
static int	vt_pixbuf_set_attachments (void *log_ctx, CVPixelBufferRef pixbuf, const AVFrame *src)
int	av_vt_pixbuf_set_attachments (void *log_ctx, CVPixelBufferRef pixbuf, const AVFrame *src)
static int	vt_map_frame (AVHWFramesContext *ctx, AVFrame *dst, const AVFrame *src, int flags)
static int	vt_transfer_data_from (AVHWFramesContext *hwfc, AVFrame *dst, const AVFrame *src)
static int	vt_transfer_data_to (AVHWFramesContext *hwfc, AVFrame *dst, const AVFrame *src)
static int	vt_map_from (AVHWFramesContext *hwfc, AVFrame *dst, const AVFrame *src, int flags)
static int	vt_device_create (AVHWDeviceContext *ctx, const char *device, AVDictionary *opts, int flags)

Variables
struct {
uint32_t   cv_fmt
bool   full_range
enum AVPixelFormat   pix_fmt
}	cv_pix_fmts []
static enum AVPixelFormat	supported_formats []
const HWContextType	ff_hwcontext_type_videotoolbox

Function Documentation

vt_frames_get_constraints()

static int vt_frames_get_constraints ( AVHWDeviceContext *  ctx, const void *  hwconfig, AVHWFramesConstraints *  constraints  )

static

Definition at line 112 of file hwcontext_videotoolbox.c.

av_map_videotoolbox_format_to_pixfmt()

enum AVPixelFormat av_map_videotoolbox_format_to_pixfmt

(

uint32_t

cv_fmt

)

Convert a VideoToolbox (actually CoreVideo) format to AVPixelFormat.

Returns AV_PIX_FMT_NONE if no known equivalent was found.

Definition at line 137 of file hwcontext_videotoolbox.c.

Referenced by vt_map_frame().

av_map_videotoolbox_format_from_pixfmt()

uint32_t av_map_videotoolbox_format_from_pixfmt

(

enum AVPixelFormat

pix_fmt

)

Convert an AVPixelFormat to a VideoToolbox (actually CoreVideo) format.

Returns 0 if no known equivalent was found.

Definition at line 147 of file hwcontext_videotoolbox.c.

Referenced by vt_pool_alloc().

av_map_videotoolbox_format_from_pixfmt2()

uint32_t av_map_videotoolbox_format_from_pixfmt2	(	enum AVPixelFormat	pix_fmt,
		bool	full_range
	)

Same as av_map_videotoolbox_format_from_pixfmt function, but can map and return full range pixel formats via a flag.

Definition at line 152 of file hwcontext_videotoolbox.c.

Referenced by av_map_videotoolbox_format_from_pixfmt(), and get_cv_pixel_format().

vt_pool_alloc()

static int vt_pool_alloc ( AVHWFramesContext *  ctx )

static

Definition at line 162 of file hwcontext_videotoolbox.c.

Referenced by vt_frames_init().

videotoolbox_buffer_release()

static void videotoolbox_buffer_release ( void *  opaque, uint8_t *  data  )

static

Definition at line 213 of file hwcontext_videotoolbox.c.

Referenced by vt_pool_alloc_buffer().

vt_pool_alloc_buffer()

static AVBufferRef* vt_pool_alloc_buffer ( void *  opaque, size_t  size  )

static

Definition at line 218 of file hwcontext_videotoolbox.c.

Referenced by vt_frames_init().

vt_frames_uninit()

static void vt_frames_uninit ( AVHWFramesContext *  ctx )

static

Definition at line 245 of file hwcontext_videotoolbox.c.

vt_frames_init()

static int vt_frames_init ( AVHWFramesContext *  ctx )

static

Definition at line 254 of file hwcontext_videotoolbox.c.

vt_get_buffer()

static int vt_get_buffer ( AVHWFramesContext *  ctx, AVFrame *  frame  )

static

Definition at line 282 of file hwcontext_videotoolbox.c.

vt_transfer_get_formats()

static int vt_transfer_get_formats ( AVHWFramesContext *  ctx, enum AVHWFrameTransferDirection  dir, enum AVPixelFormat **  formats  )

static

Definition at line 296 of file hwcontext_videotoolbox.c.

vt_unmap()

static void vt_unmap ( AVHWFramesContext *  ctx, HWMapDescriptor *  hwmap  )

static

Definition at line 311 of file hwcontext_videotoolbox.c.

Referenced by vt_map_frame().

vt_pixbuf_set_par()

static int vt_pixbuf_set_par ( void *  log_ctx, CVPixelBufferRef  pixbuf, const AVFrame *  src  )

static

Definition at line 318 of file hwcontext_videotoolbox.c.

Referenced by vt_pixbuf_set_attachments().

av_map_videotoolbox_chroma_loc_from_av()

CFStringRef av_map_videotoolbox_chroma_loc_from_av

(

enum AVChromaLocation

loc

)

Convert an AVChromaLocation to a VideoToolbox/CoreVideo chroma location string.

Returns 0 if no known equivalent was found.

Definition at line 375 of file hwcontext_videotoolbox.c.

Referenced by vt_pixbuf_set_chromaloc().

vt_pixbuf_set_chromaloc()

static int vt_pixbuf_set_chromaloc ( void *  log_ctx, CVPixelBufferRef  pixbuf, const AVFrame *  src  )

static

Definition at line 395 of file hwcontext_videotoolbox.c.

Referenced by vt_pixbuf_set_attachments().

av_map_videotoolbox_color_matrix_from_av()

CFStringRef av_map_videotoolbox_color_matrix_from_av

(

enum AVColorSpace

space

)

Convert an AVColorSpace to a VideoToolbox/CoreVideo color matrix string.

Returns 0 if no known equivalent was found.

Definition at line 411 of file hwcontext_videotoolbox.c.

Referenced by vt_pixbuf_set_colorspace().

av_map_videotoolbox_color_primaries_from_av()

CFStringRef av_map_videotoolbox_color_primaries_from_av

(

enum AVColorPrimaries

pri

)

Convert an AVColorPrimaries to a VideoToolbox/CoreVideo color primaries string.

Returns 0 if no known equivalent was found.

Definition at line 438 of file hwcontext_videotoolbox.c.

Referenced by vt_pixbuf_set_colorspace().

av_map_videotoolbox_color_trc_from_av()

CFStringRef av_map_videotoolbox_color_trc_from_av

(

enum AVColorTransferCharacteristic

trc

)

Convert an AVColorTransferCharacteristic to a VideoToolbox/CoreVideo color transfer function string.

Returns 0 if no known equivalent was found.

Definition at line 463 of file hwcontext_videotoolbox.c.

Referenced by vt_pixbuf_set_colorspace().

vt_pixbuf_set_colorspace()

static int vt_pixbuf_set_colorspace ( void *  log_ctx, CVPixelBufferRef  pixbuf, const AVFrame *  src  )

static

Definition at line 510 of file hwcontext_videotoolbox.c.

Referenced by vt_pixbuf_set_attachments().

vt_pixbuf_set_attachments()

static int vt_pixbuf_set_attachments ( void *  log_ctx, CVPixelBufferRef  pixbuf, const AVFrame *  src  )

static

Definition at line 567 of file hwcontext_videotoolbox.c.

Referenced by av_vt_pixbuf_set_attachments(), and vt_transfer_data_to().

av_vt_pixbuf_set_attachments()

int av_vt_pixbuf_set_attachments	(	void *	log_ctx,
		CVPixelBufferRef	pixbuf,
		const AVFrame *	src
	)

Definition at line 583 of file hwcontext_videotoolbox.c.

Referenced by videotoolbox_postproc_frame().

vt_map_frame()

static int vt_map_frame ( AVHWFramesContext *  ctx, AVFrame *  dst, const AVFrame *  src, int  flags  )

static

Definition at line 589 of file hwcontext_videotoolbox.c.

Referenced by vt_map_from(), vt_transfer_data_from(), and vt_transfer_data_to().

vt_transfer_data_from()

static int vt_transfer_data_from ( AVHWFramesContext *  hwfc, AVFrame *  dst, const AVFrame *  src  )

static

Definition at line 645 of file hwcontext_videotoolbox.c.

vt_transfer_data_to()

static int vt_transfer_data_to ( AVHWFramesContext *  hwfc, AVFrame *  dst, const AVFrame *  src  )

static

Definition at line 676 of file hwcontext_videotoolbox.c.

vt_map_from()

static int vt_map_from ( AVHWFramesContext *  hwfc, AVFrame *  dst, const AVFrame *  src, int  flags  )

static

Definition at line 711 of file hwcontext_videotoolbox.c.

vt_device_create()

static int vt_device_create ( AVHWDeviceContext *  ctx, const char *  device, AVDictionary *  opts, int  flags  )

static

Definition at line 735 of file hwcontext_videotoolbox.c.

Variable Documentation

cv_fmt

uint32_t cv_fmt

Definition at line 41 of file hwcontext_videotoolbox.c.

Referenced by av_map_videotoolbox_format_to_pixfmt().

full_range

bool full_range

Definition at line 42 of file hwcontext_videotoolbox.c.

Referenced by av_map_videotoolbox_format_from_pixfmt2(), dvbsub_parse_clut_segment(), and mov_write_colr_tag().

pix_fmt

enum AVPixelFormat pix_fmt

Definition at line 43 of file hwcontext_videotoolbox.c.

Referenced by av_map_videotoolbox_format_from_pixfmt(), and av_map_videotoolbox_format_from_pixfmt2().

cv_pix_fmts

const { ... } cv_pix_fmts[]

Referenced by av_map_videotoolbox_format_from_pixfmt2(), and av_map_videotoolbox_format_to_pixfmt().

supported_formats

enum AVPixelFormat supported_formats[]

static

Initial value:

= {
 
 
 
 
    AV_PIX_FMT_YUV420P,
    AV_PIX_FMT_UYVY422,
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    AV_PIX_FMT_BGRA,
}

Definition at line 81 of file hwcontext_videotoolbox.c.

Referenced by vt_frames_get_constraints(), and vt_frames_init().

ff_hwcontext_type_videotoolbox

const HWContextType ff_hwcontext_type_videotoolbox

Initial value:

= {
    .type                 = AV_HWDEVICE_TYPE_VIDEOTOOLBOX,
    .name                 = "videotoolbox",
 
    .frames_priv_size     = sizeof(VTFramesContext),
 
    .device_create        = vt_device_create,
    .frames_init          = vt_frames_init,
    .frames_get_buffer    = vt_get_buffer,
    .frames_get_constraints = vt_frames_get_constraints,
    .frames_uninit        = vt_frames_uninit,
    .transfer_get_formats = vt_transfer_get_formats,
    .transfer_data_to     = vt_transfer_data_to,
    .transfer_data_from   = vt_transfer_data_from,
    .map_from             = vt_map_from,
 
    .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_VIDEOTOOLBOX, AV_PIX_FMT_NONE },
}

Definition at line 746 of file hwcontext_videotoolbox.c.