libavcodec/dirac.c File Reference

Dirac Decoder. More...

#include "libavutil/imgutils.h"
#include "dirac.h"
#include "avcodec.h"
#include "golomb.h"
#include "mpeg12data.h"

Go to the source code of this file.

Functions
static int	parse_source_parameters (AVCodecContext *avctx, GetBitContext *gb, dirac_source_params *source)
	Dirac Specification -> 10.3 Parse Source Parameters.
int	avpriv_dirac_parse_sequence_header (AVCodecContext *avctx, GetBitContext *gb, dirac_source_params *source)
	Dirac Specification -> 10.
Variables
static const dirac_source_params	dirac_source_parameters_defaults []
static const AVRational	dirac_preset_aspect_ratios []
	Dirac Specification -> Table 10.4 - Available preset pixel aspect ratio values.
static const AVRational	dirac_frame_rate []
	Dirac Specification -> Values 9,10 of 10.3.5 Frame Rate.
struct {
uint8_t   bitdepth
enum AVColorRange   color_range
}	pixel_range_presets []
	Dirac Specification -> This should be equivalent to Table 10.5 Available signal range presets.
static enum AVColorPrimaries	dirac_primaries []
struct {
enum AVColorPrimaries   color_primaries
enum AVColorSpace   colorspace
enum AVColorTransferCharacteristic   color_trc
}	dirac_color_presets []
static enum PixelFormat	dirac_pix_fmt [2][3]
	Dirac Specification -> Table 10.2 Supported chroma sampling formats + Luma Offset.

---

Detailed Description

Dirac Decoder.

Author:

Marco Gerards <marco@gnu.org>, David Conrad, Jordi Ortiz <nenjordi@gmail.com>

Definition in file dirac.c.

---

Function Documentation

int avpriv_dirac_parse_sequence_header	(	AVCodecContext *	avctx,
		GetBitContext *	gb,
		dirac_source_params *	source
	)

Dirac Specification -> 10.

Sequence Header. sequence_header()

Definition at line 274 of file dirac.c.

Referenced by dirac_decode_data_unit(), and dirac_header().

static int parse_source_parameters	(	AVCodecContext *	avctx,
		GetBitContext *	gb,
		dirac_source_params *	source
	)			[static]

Dirac Specification -> 10.3 Parse Source Parameters.

source_parameters(base_video_format)

Definition at line 127 of file dirac.c.

Referenced by avpriv_dirac_parse_sequence_header().

---

Variable Documentation

uint8_t bitdepth

Definition at line 87 of file dirac.c.

enum AVColorPrimaries color_primaries

Definition at line 103 of file dirac.c.

enum AVColorRange color_range

Definition at line 88 of file dirac.c.

enum AVColorTransferCharacteristic color_trc

Definition at line 105 of file dirac.c.

enum AVColorSpace colorspace

Definition at line 104 of file dirac.c.

struct { ... } dirac_color_presets[] [static]

Referenced by parse_source_parameters().

const AVRational dirac_frame_rate[] [static]

Initial value:

 {
    {15000, 1001},
    {25, 2},
}

Dirac Specification -> Values 9,10 of 10.3.5 Frame Rate.

Table 10.3 Available preset frame rate values

Definition at line 77 of file dirac.c.

enum PixelFormat dirac_pix_fmt[2][3] [static]

Initial value:

 {
    { PIX_FMT_YUV444P,  PIX_FMT_YUV422P,  PIX_FMT_YUV420P  },
    { PIX_FMT_YUVJ444P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ420P },
}

Dirac Specification -> Table 10.2 Supported chroma sampling formats + Luma Offset.

Definition at line 118 of file dirac.c.

Referenced by parse_source_parameters().

const AVRational dirac_preset_aspect_ratios[] [static]

Initial value:

 {
    {1, 1},
    {10, 11},
    {12, 11},
    {40, 33},
    {16, 11},
    {4, 3},
}

Dirac Specification -> Table 10.4 - Available preset pixel aspect ratio values.

Definition at line 64 of file dirac.c.

enum AVColorPrimaries dirac_primaries[] [static]

Initial value:

 {
    AVCOL_PRI_BT709,
    AVCOL_PRI_SMPTE170M,
    AVCOL_PRI_BT470BG,
}

Definition at line 96 of file dirac.c.

Referenced by parse_source_parameters().

const dirac_source_params dirac_source_parameters_defaults[] [static]

Initial value:

 {
    { 640,  480,  2, 0, 0, 1,  1, 640,  480,  0, 0, 1, 0 },
    { 176,  120,  2, 0, 0, 9,  2, 176,  120,  0, 0, 1, 1 },
    { 176,  144,  2, 0, 1, 10, 3, 176,  144,  0, 0, 1, 2 },
    { 352,  240,  2, 0, 0, 9,  2, 352,  240,  0, 0, 1, 1 },
    { 352,  288,  2, 0, 1, 10, 3, 352,  288,  0, 0, 1, 2 },
    { 704,  480,  2, 0, 0, 9,  2, 704,  480,  0, 0, 1, 1 },
    { 704,  576,  2, 0, 1, 10, 3, 704,  576,  0, 0, 1, 2 },
    { 720,  480,  1, 1, 0, 4,  2, 704,  480,  8, 0, 3, 1 },
    { 720,  576,  1, 1, 1, 3,  3, 704,  576,  8, 0, 3, 2 },
    { 1280, 720,  1, 0, 1, 7,  1, 1280, 720,  0, 0, 3, 3 },
    { 1280, 720,  1, 0, 1, 6,  1, 1280, 720,  0, 0, 3, 3 },
    { 1920, 1080, 1, 1, 1, 4,  1, 1920, 1080, 0, 0, 3, 3 },
    { 1920, 1080, 1, 1, 1, 3,  1, 1920, 1080, 0, 0, 3, 3 },
    { 1920, 1080, 1, 0, 1, 7,  1, 1920, 1080, 0, 0, 3, 3 },
    { 1920, 1080, 1, 0, 1, 6,  1, 1920, 1080, 0, 0, 3, 3 },
    { 2048, 1080, 0, 0, 1, 2,  1, 2048, 1080, 0, 0, 4, 4 },
    { 4096, 2160, 0, 0, 1, 2,  1, 4096, 2160, 0, 0, 4, 4 },
    { 3840, 2160, 1, 0, 1, 7,  1, 3840, 2160, 0, 0, 3, 3 },
    { 3840, 2160, 1, 0, 1, 6,  1, 3840, 2160, 0, 0, 3, 3 },
    { 7680, 4320, 1, 0, 1, 7,  1, 3840, 2160, 0, 0, 3, 3 },
    { 7680, 4320, 1, 0, 1, 6,  1, 3840, 2160, 0, 0, 3, 3 },
}

Definition at line 36 of file dirac.c.

struct { ... } pixel_range_presets[] [static]

Dirac Specification -> This should be equivalent to Table 10.5 Available signal range presets.

Referenced by parse_source_parameters().