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 "attributes.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.
static uint32_t	vt_format_from_pixfmt (enum AVPixelFormat pix_fmt, enum AVColorRange range)
uint32_t	av_map_videotoolbox_format_from_pixfmt (enum AVPixelFormat pix_fmt)
	Convert an AVPixelFormat to a VideoToolbox (actually CoreVideo) format.
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.
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.
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.
CFStringRef	av_map_videotoolbox_color_primaries_from_av (enum AVColorPrimaries pri)
	Convert an AVColorPrimaries to a VideoToolbox/CoreVideo color primaries string.
CFStringRef	av_map_videotoolbox_color_trc_from_av (enum AVColorTransferCharacteristic trc)
	Convert an AVColorTransferCharacteristic to a VideoToolbox/CoreVideo color transfer function string.
static CFDictionaryRef	vt_cv_buffer_copy_attachments (CVBufferRef buffer, CVAttachmentMode attachment_mode)
	Copy all attachments for the specified mode from the given buffer.
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 128 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 153 of file hwcontext_videotoolbox.c.

Referenced by vt_map_frame().

vt_format_from_pixfmt()

static uint32_t vt_format_from_pixfmt ( enum AVPixelFormat pix_fmt, enum AVColorRange range )

static

Definition at line 163 of file hwcontext_videotoolbox.c.

Referenced by av_map_videotoolbox_format_from_pixfmt2(), and vt_pool_alloc().

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 182 of file hwcontext_videotoolbox.c.

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 187 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 192 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 244 of file hwcontext_videotoolbox.c.

vt_pool_alloc_buffer()

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

static

Definition at line 249 of file hwcontext_videotoolbox.c.

Referenced by vt_frames_init().

vt_frames_uninit()

static void vt_frames_uninit ( AVHWFramesContext * ctx )

static

Definition at line 276 of file hwcontext_videotoolbox.c.

vt_frames_init()

static int vt_frames_init ( AVHWFramesContext * ctx )

static

Definition at line 285 of file hwcontext_videotoolbox.c.

vt_get_buffer()

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

static

Definition at line 313 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 327 of file hwcontext_videotoolbox.c.

vt_unmap()

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

static

Definition at line 342 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 349 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 408 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 428 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 447 of file hwcontext_videotoolbox.c.

Referenced by scale_vt_init(), vt_pixbuf_set_colorspace(), and vtenc_configure_encoder().

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 475 of file hwcontext_videotoolbox.c.

Referenced by scale_vt_init(), vt_pixbuf_set_colorspace(), and vtenc_configure_encoder().

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 501 of file hwcontext_videotoolbox.c.

Referenced by scale_vt_init(), vt_pixbuf_set_colorspace(), and vtenc_configure_encoder().

vt_cv_buffer_copy_attachments()

static CFDictionaryRef vt_cv_buffer_copy_attachments ( CVBufferRef buffer, CVAttachmentMode attachment_mode )

static

Copy all attachments for the specified mode from the given buffer.

Definition at line 552 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 578 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 661 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 677 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 683 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 739 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 770 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 805 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 829 of file hwcontext_videotoolbox.c.

Variable Documentation

cv_fmt

uint32_t cv_fmt

Definition at line 46 of file hwcontext_videotoolbox.c.

Referenced by av_map_videotoolbox_format_to_pixfmt().

full_range

bool full_range

Definition at line 47 of file hwcontext_videotoolbox.c.

pix_fmt

enum AVPixelFormat pix_fmt

Definition at line 48 of file hwcontext_videotoolbox.c.

[struct]

const struct { ... } cv_pix_fmts[]

Referenced by av_map_videotoolbox_format_to_pixfmt(), and vt_format_from_pixfmt().

supported_formats

enum AVPixelFormat supported_formats[]

static

Definition at line 92 of file hwcontext_videotoolbox.c.

ff_hwcontext_type_videotoolbox

const HWContextType ff_hwcontext_type_videotoolbox

Initial value:

= {
    .type                 = AV_HWDEVICE_TYPE_VIDEOTOOLBOX,
    .name                 = "videotoolbox",
 
    .frames_hwctx_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 840 of file hwcontext_videotoolbox.c.