aic.c File Reference

#include <inttypes.h>
#include "libavutil/mem_internal.h"
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"
#include "get_bits.h"
#include "golomb.h"
#include "idctdsp.h"
#include "thread.h"
#include "unary.h"

Go to the source code of this file.

Data Structures
struct	AICContext

Macros
#define	AIC_HDR_SIZE   24
#define	AIC_BAND_COEFFS   (64 + 32 + 192 + 96)
#define	GET_CODE(val, type, add_bits)

Enumerations
enum	AICBands {   COEFF_LUMA = 0, COEFF_CHROMA, COEFF_LUMA_EXT, COEFF_CHROMA_EXT,   NUM_BANDS }

Functions
static int	aic_decode_header (AICContext *ctx, const uint8_t *src, int size)
static int	aic_decode_coeffs (GetBitContext *gb, int16_t *dst, int band, int slice_width, int force_chroma)
static void	recombine_block (int16_t *dst, const uint8_t *scan, int16_t **base, int16_t **ext)
static void	recombine_block_il (int16_t *dst, const uint8_t *scan, int16_t **base, int16_t **ext, int block_no)
static void	unquant_block (int16_t *block, int q, uint8_t *quant_matrix)
static int	aic_decode_slice (AICContext *ctx, int mb_x, int mb_y, const uint8_t *src, int src_size)
static int	aic_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static av_cold int	aic_decode_init (AVCodecContext *avctx)
static av_cold int	aic_decode_close (AVCodecContext *avctx)

Variables
static const uint8_t	aic_num_band_coeffs [NUM_BANDS] = { 64, 32, 192, 96 }
static const uint16_t	aic_band_off [NUM_BANDS] = { 0, 64, 96, 288 }
static const uint8_t	aic_quant_matrix [64]
static const uint8_t	aic_y_scan [64]
static const uint8_t	aic_y_ext_scan [192]
static const uint8_t	aic_c_scan [64]
static const uint8_t	aic_c_ext_scan [192]
static const uint8_t *const	aic_scan [NUM_BANDS]
const AVCodec	ff_aic_decoder

Macro Definition Documentation

AIC_HDR_SIZE

#define AIC_HDR_SIZE   24

Definition at line 36 of file aic.c.

AIC_BAND_COEFFS

#define AIC_BAND_COEFFS   (64 + 32 + 192 + 96)

Definition at line 37 of file aic.c.

GET_CODE

#define GET_CODE	(		val,
			type,
			add_bits
	)

Value:

    do {                                                      \
        if (type)                                             \
            val = get_ue_golomb(gb);                          \
        else                                                  \
            val = get_unary(gb, 1, 31);                       \
        if (add_bits)                                         \
            val = (val << add_bits) + get_bits(gb, add_bits); \
    } while (0)

Definition at line 194 of file aic.c.

Enumeration Type Documentation

AICBands

enum AICBands

Enumerator
COEFF_LUMA
COEFF_CHROMA
COEFF_LUMA_EXT
COEFF_CHROMA_EXT
NUM_BANDS

Definition at line 39 of file aic.c.

Function Documentation

aic_decode_header()

static int aic_decode_header ( AICContext *  ctx, const uint8_t *  src, int  size  )

static

Definition at line 161 of file aic.c.

Referenced by aic_decode_frame().

aic_decode_coeffs()

static int aic_decode_coeffs ( GetBitContext *  gb, int16_t *  dst, int  band, int  slice_width, int  force_chroma  )

static

Definition at line 204 of file aic.c.

Referenced by aic_decode_slice().

recombine_block()

static void recombine_block ( int16_t *  dst, const uint8_t *  scan, int16_t **  base, int16_t **  ext  )

static

Definition at line 255 of file aic.c.

Referenced by aic_decode_slice().

recombine_block_il()

static void recombine_block_il ( int16_t *  dst, const uint8_t *  scan, int16_t **  base, int16_t **  ext, int  block_no  )

static

Definition at line 275 of file aic.c.

Referenced by aic_decode_slice().

unquant_block()

static void unquant_block ( int16_t *  block, int  q, uint8_t *  quant_matrix  )

static

Definition at line 297 of file aic.c.

Referenced by aic_decode_slice().

aic_decode_slice()

static int aic_decode_slice ( AICContext *  ctx, int  mb_x, int  mb_y, const uint8_t *  src, int  src_size  )

static

Definition at line 310 of file aic.c.

Referenced by aic_decode_frame().

aic_decode_frame()

static int aic_decode_frame ( AVCodecContext *  avctx, void *  data, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 384 of file aic.c.

aic_decode_init()

static av_cold int aic_decode_init ( AVCodecContext *  avctx )

static

Definition at line 444 of file aic.c.

aic_decode_close()

static av_cold int aic_decode_close ( AVCodecContext *  avctx )

static

Definition at line 490 of file aic.c.

Variable Documentation

aic_num_band_coeffs

const uint8_t aic_num_band_coeffs[NUM_BANDS] = { 64, 32, 192, 96 }

static

Definition at line 47 of file aic.c.

Referenced by aic_decode_coeffs().

aic_band_off

const uint16_t aic_band_off[NUM_BANDS] = { 0, 64, 96, 288 }

static

Definition at line 49 of file aic.c.

Referenced by aic_decode_init().

aic_quant_matrix

const uint8_t aic_quant_matrix[64]

static

Initial value:

= {
     8, 16, 19, 22, 22, 26, 26, 27,
    16, 16, 22, 22, 26, 27, 27, 29,
    19, 22, 26, 26, 27, 29, 29, 35,
    22, 24, 27, 27, 29, 32, 34, 38,
    26, 27, 29, 29, 32, 35, 38, 46,
    27, 29, 34, 34, 35, 40, 46, 56,
    29, 34, 34, 37, 40, 48, 56, 69,
    34, 37, 38, 40, 48, 58, 69, 83,
}

Definition at line 51 of file aic.c.

Referenced by aic_decode_init().

aic_y_scan

const uint8_t aic_y_scan[64]

static

Initial value:

= {
     0,  4,  1,  2,  5,  8, 12,  9,
     6,  3,  7, 10, 13, 14, 11, 15,
    47, 43, 46, 45, 42, 39, 35, 38,
    41, 44, 40, 37, 34, 33, 36, 32,
    16, 20, 17, 18, 21, 24, 28, 25,
    22, 19, 23, 26, 29, 30, 27, 31,
    63, 59, 62, 61, 58, 55, 51, 54,
    57, 60, 56, 53, 50, 49, 52, 48,
}

Definition at line 62 of file aic.c.

aic_y_ext_scan

const uint8_t aic_y_ext_scan[192]

static

Initial value:

= {
     64,  72,  65,  66,  73,  80,  88,  81,
     74,  67,  75,  82,  89,  90,  83,  91,
      0,   4,   1,   2,   5,   8,  12,   9,
      6,   3,   7,  10,  13,  14,  11,  15,
     16,  20,  17,  18,  21,  24,  28,  25,
     22,  19,  23,  26,  29,  30,  27,  31,
    155, 147, 154, 153, 146, 139, 131, 138,
    145, 152, 144, 137, 130, 129, 136, 128,
     47,  43,  46,  45,  42,  39,  35,  38,
     41,  44,  40,  37,  34,  33,  36,  32,
     63,  59,  62,  61,  58,  55,  51,  54,
     57,  60,  56,  53,  50,  49,  52,  48,
     96, 104,  97,  98, 105, 112, 120, 113,
    106,  99, 107, 114, 121, 122, 115, 123,
     68,  76,  69,  70,  77,  84,  92,  85,
     78,  71,  79,  86,  93,  94,  87,  95,
    100, 108, 101, 102, 109, 116, 124, 117,
    110, 103, 111, 118, 125, 126, 119, 127,
    187, 179, 186, 185, 178, 171, 163, 170,
    177, 184, 176, 169, 162, 161, 168, 160,
    159, 151, 158, 157, 150, 143, 135, 142,
    149, 156, 148, 141, 134, 133, 140, 132,
    191, 183, 190, 189, 182, 175, 167, 174,
    181, 188, 180, 173, 166, 165, 172, 164,
}

Definition at line 73 of file aic.c.

aic_c_scan

const uint8_t aic_c_scan[64]

static

Initial value:

= {
     0,  4,  1,  2,  5,  8, 12,  9,
     6,  3,  7, 10, 13, 14, 11, 15,
    31, 27, 30, 29, 26, 23, 19, 22,
    25, 28, 24, 21, 18, 17, 20, 16,
    32, 36, 33, 34, 37, 40, 44, 41,
    38, 35, 39, 42, 45, 46, 43, 47,
    63, 59, 62, 61, 58, 55, 51, 54,
    57, 60, 56, 53, 50, 49, 52, 48,
}

Definition at line 100 of file aic.c.

aic_c_ext_scan

const uint8_t aic_c_ext_scan[192]

static

Initial value:

= {
     16,  24,  17,  18,  25,  32,  40,  33,
     26,  19,  27,  34,  41,  42,  35,  43,
      0,   4,   1,   2,   5,   8,  12,   9,
      6,   3,   7,  10,  13,  14,  11,  15,
     20,  28,  21,  22,  29,  36,  44,  37,
     30,  23,  31,  38,  45,  46,  39,  47,
     95,  87,  94,  93,  86,  79,  71,  78,
     85,  92,  84,  77,  70,  69,  76,  68,
     63,  59,  62,  61,  58,  55,  51,  54,
     57,  60,  56,  53,  50,  49,  52,  48,
     91,  83,  90,  89,  82,  75,  67,  74,
     81,  88,  80,  73,  66,  65,  72,  64,
    112, 120, 113, 114, 121, 128, 136, 129,
    122, 115, 123, 130, 137, 138, 131, 139,
     96, 100,  97,  98, 101, 104, 108, 105,
    102,  99, 103, 106, 109, 110, 107, 111,
    116, 124, 117, 118, 125, 132, 140, 133,
    126, 119, 127, 134, 141, 142, 135, 143,
    191, 183, 190, 189, 182, 175, 167, 174,
    181, 188, 180, 173, 166, 165, 172, 164,
    159, 155, 158, 157, 154, 151, 147, 150,
    153, 156, 152, 149, 146, 145, 148, 144,
    187, 179, 186, 185, 178, 171, 163, 170,
    177, 184, 176, 169, 162, 161, 168, 160,
}

Definition at line 111 of file aic.c.

aic_scan

const uint8_t* const aic_scan[NUM_BANDS]

static

Initial value:

= {
    aic_y_scan, aic_c_scan, aic_y_ext_scan, aic_c_ext_scan
}

Definition at line 138 of file aic.c.

Referenced by aic_decode_coeffs().

ff_aic_decoder

const AVCodec ff_aic_decoder

Initial value:

= {
    .name           = "aic",
    .long_name      = NULL_IF_CONFIG_SMALL("Apple Intermediate Codec"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_AIC,
    .priv_data_size = sizeof(AICContext),
    .init           = aic_decode_init,
    .close          = aic_decode_close,
    .decode         = aic_decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
}

Definition at line 499 of file aic.c.