videotoolbox.c File Reference

#include "config.h"
#include "config_components.h"
#include "videotoolbox.h"
#include "libavutil/hwcontext_videotoolbox.h"
#include "libavutil/mem.h"
#include "vt_internal.h"
#include "libavutil/avutil.h"
#include "libavutil/hwcontext.h"
#include "libavutil/pixdesc.h"
#include "bytestream.h"
#include "decode.h"
#include "internal.h"
#include "h264dec.h"
#include "hevcdec.h"
#include "hwaccel_internal.h"
#include "mpegvideo.h"
#include "proresdec.h"
#include <Availability.h>
#include <AvailabilityMacros.h>
#include <TargetConditionals.h>

Go to the source code of this file.

Data Structures
struct	VTHWFrame

Macros
#define	kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder   CFSTR("RequireHardwareAcceleratedVideoDecoder")
#define	kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder   CFSTR("EnableHardwareAcceleratedVideoDecoder")
#define	VIDEOTOOLBOX_ESDS_EXTRADATA_PADDING   12
#define	AV_W8(p, v)   *(p) = (v)
#define	COUNT_SIZE_PS(T, t)
#define	APPEND_PS(T, t)

Enumerations
enum	{ kCMVideoCodecType_HEVC = 'hvc1' }
enum	{ kCMVideoCodecType_VP9 = 'vp09' }

Functions
static void	videotoolbox_buffer_release (void *opaque, uint8_t *data)
int	ff_videotoolbox_buffer_copy (VTContext *vtctx, const uint8_t *buffer, uint32_t size)
static int	videotoolbox_postproc_frame (void *avctx, AVFrame *frame)
int	ff_videotoolbox_alloc_frame (AVCodecContext *avctx, AVFrame *frame)
static int	escape_ps (uint8_t *dst, const uint8_t *src, int src_size)
CFDataRef	ff_videotoolbox_avcc_extradata_create (AVCodecContext *avctx)
CFDataRef	ff_videotoolbox_hvcc_extradata_create (AVCodecContext *avctx)
int	ff_videotoolbox_h264_start_frame (AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
static int	videotoolbox_h264_decode_params (AVCodecContext *avctx, int type, const uint8_t *buffer, uint32_t size)
static int	videotoolbox_common_decode_slice (AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
int	ff_videotoolbox_h264_decode_slice (AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)

Macro Definition Documentation

kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder

#define kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder   CFSTR("RequireHardwareAcceleratedVideoDecoder")

Definition at line 45 of file videotoolbox.c.

kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder

#define kVTVideoDecoderSpecification_EnableHardwareAcceleratedVideoDecoder   CFSTR("EnableHardwareAcceleratedVideoDecoder")

Definition at line 48 of file videotoolbox.c.

VIDEOTOOLBOX_ESDS_EXTRADATA_PADDING

#define VIDEOTOOLBOX_ESDS_EXTRADATA_PADDING   12

Definition at line 59 of file videotoolbox.c.

AV_W8

#define AV_W8	(		p,
			v
	)		*(p) = (v)

Definition at line 156 of file videotoolbox.c.

COUNT_SIZE_PS

#define COUNT_SIZE_PS	(		T,
			t
	)

Value:

    for (i = 0; i < HEVC_MAX_##T##PS_COUNT; i++) { \
        if (h->ps.t##ps_list[i]) { \
            const HEVC##T##PS *lps = h->ps.t##ps_list[i]; \
            vt_extradata_size += 2 + escape_ps(NULL, lps->data, lps->data_size); \
            num_##t##ps++; \
        } \
    }

APPEND_PS

#define APPEND_PS	(		T,
			t
	)

Value:

    /* \
     * bit(1) array_completeness; \
     * unsigned int(1) reserved = 0; \
     * unsigned int(6) NAL_unit_type; \
     */ \
    AV_W8(p, 1 << 7 | \
             HEVC_NAL_##T##PS & 0x3f); \
    /* unsigned int(16) numNalus; */ \
    AV_WB16(p + 1, num_##t##ps); \
    p += 3; \
    for (i = 0; i < HEVC_MAX_##T##PS_COUNT; i++) { \
        if (h->ps.t##ps_list[i]) { \
            const HEVC##T##PS *lps = h->ps.t##ps_list[i]; \
            int size = escape_ps(p + 2, lps->data, lps->data_size); \
            /* unsigned int(16) nalUnitLength; */ \
            AV_WB16(p, size); \
            /* bit(8*nalUnitLength) nalUnit; */ \
            p += 2 + size; \
        } \
    }

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
kCMVideoCodecType_HEVC

Definition at line 52 of file videotoolbox.c.

anonymous enum

anonymous enum

Enumerator
kCMVideoCodecType_VP9

Definition at line 56 of file videotoolbox.c.

Function Documentation

videotoolbox_buffer_release()

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

static

Definition at line 66 of file videotoolbox.c.

Referenced by ff_videotoolbox_alloc_frame().

ff_videotoolbox_buffer_copy()

int ff_videotoolbox_buffer_copy	(	VTContext *	vtctx,
		const uint8_t *	buffer,
		uint32_t	size
	)

Definition at line 75 of file videotoolbox.c.

Referenced by videotoolbox_vp9_decode_slice().

videotoolbox_postproc_frame()

static int videotoolbox_postproc_frame ( void *  avctx, AVFrame *  frame  )

static

Definition at line 95 of file videotoolbox.c.

Referenced by ff_videotoolbox_alloc_frame().

ff_videotoolbox_alloc_frame()

int ff_videotoolbox_alloc_frame	(	AVCodecContext *	avctx,
		AVFrame *	frame
	)

Definition at line 126 of file videotoolbox.c.

escape_ps()

static int escape_ps ( uint8_t *  dst, const uint8_t *  src, int  src_size  )

static

Definition at line 158 of file videotoolbox.c.

Referenced by ff_videotoolbox_avcc_extradata_create().

ff_videotoolbox_avcc_extradata_create()

CFDataRef ff_videotoolbox_avcc_extradata_create

(

AVCodecContext *

avctx

)

Definition at line 187 of file videotoolbox.c.

ff_videotoolbox_hvcc_extradata_create()

CFDataRef ff_videotoolbox_hvcc_extradata_create

(

AVCodecContext *

avctx

)

Definition at line 232 of file videotoolbox.c.

ff_videotoolbox_h264_start_frame()

int ff_videotoolbox_h264_start_frame	(	AVCodecContext *	avctx,
		const uint8_t *	buffer,
		uint32_t	size
	)

Definition at line 389 of file videotoolbox.c.

videotoolbox_h264_decode_params()

static int videotoolbox_h264_decode_params ( AVCodecContext *  avctx, int  type, const uint8_t *  buffer, uint32_t  size  )

static

Definition at line 403 of file videotoolbox.c.

videotoolbox_common_decode_slice()

static int videotoolbox_common_decode_slice ( AVCodecContext *  avctx, const uint8_t *  buffer, uint32_t  size  )

static

Definition at line 426 of file videotoolbox.c.

ff_videotoolbox_h264_decode_slice()

int ff_videotoolbox_h264_decode_slice	(	AVCodecContext *	avctx,
		const uint8_t *	buffer,
		uint32_t	size
	)

Definition at line 449 of file videotoolbox.c.