agm.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "avcodec.h"
#include "bytestream.h"
#include "copy_block.h"
#include "get_bits.h"
#include "idctdsp.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	MotionVector
struct	AGMContext
struct	Node

Macros
#define	BITSTREAM_READER_LE

Functions
static int	read_code (GetBitContext *gb, int *oskip, int *level, int *map, int mode)
static int	decode_intra_blocks (AGMContext *s, GetBitContext *gb, const int *quant_matrix, int *skip, int *dc_level)
static int	decode_inter_blocks (AGMContext *s, GetBitContext *gb, const int *quant_matrix, int *skip, int *map)
static int	decode_intra_block (AGMContext *s, GetBitContext *gb, const int *quant_matrix, int *skip, int *dc_level)
static int	decode_intra_plane (AGMContext *s, GetBitContext *gb, int size, const int *quant_matrix, AVFrame *frame, int plane)
static int	decode_inter_block (AGMContext *s, GetBitContext *gb, const int *quant_matrix, int *skip, int *map)
static int	decode_inter_plane (AGMContext *s, GetBitContext *gb, int size, const int *quant_matrix, AVFrame *frame, AVFrame *prev, int plane)
static void	compute_quant_matrix (AGMContext *s, double qscale)
static int	decode_raw_intra_rgb (AVCodecContext *avctx, GetByteContext *gbyte, AVFrame *frame)
static int	fill_pixels (uint8_t **y0, uint8_t **y1, uint8_t **u, uint8_t **v, int ylinesize, int ulinesize, int vlinesize, uint8_t *fill, int *nx, int *ny, int *np, int w, int h)
static int	decode_runlen_rgb (AVCodecContext *avctx, GetByteContext *gbyte, AVFrame *frame)
static int	decode_runlen (AVCodecContext *avctx, GetByteContext *gbyte, AVFrame *frame)
static int	decode_raw_intra (AVCodecContext *avctx, GetByteContext *gbyte, AVFrame *frame)
static int	decode_intra (AVCodecContext *avctx, GetBitContext *gb, AVFrame *frame)
static int	decode_motion_vectors (AVCodecContext *avctx, GetBitContext *gb)
static int	decode_inter (AVCodecContext *avctx, GetBitContext *gb, AVFrame *frame, AVFrame *prev)
static void	get_tree_codes (uint32_t *codes, Node *nodes, int idx, uint32_t pfx, int bitpos)
static int	make_new_tree (const uint8_t *bitlens, uint32_t *codes)
static int	build_huff (const uint8_t *bitlen, VLC *vlc)
static int	decode_huffman2 (AVCodecContext *avctx, int header, int size)
static int	decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static av_cold int	decode_init (AVCodecContext *avctx)
static void	decode_flush (AVCodecContext *avctx)
static av_cold int	decode_close (AVCodecContext *avctx)

Variables
static const uint8_t	unscaled_luma [64]
static const uint8_t	unscaled_chroma [64]
AVCodec	ff_agm_decoder

Macro Definition Documentation

BITSTREAM_READER_LE

#define BITSTREAM_READER_LE

Definition at line 27 of file agm.c.

Function Documentation

read_code()

static int read_code ( GetBitContext *  gb, int *  oskip, int *  level, int *  map, int  mode  )

static

Definition at line 102 of file agm.c.

Referenced by decode_inter_block(), decode_inter_blocks(), decode_intra_block(), decode_intra_blocks(), and decode_motion_vectors().

decode_intra_blocks()

static int decode_intra_blocks ( AGMContext *  s, GetBitContext *  gb, const int *  quant_matrix, int *  skip, int *  dc_level  )

static

Definition at line 194 of file agm.c.

Referenced by decode_intra_plane().

decode_inter_blocks()

static int decode_inter_blocks ( AGMContext *  s, GetBitContext *  gb, const int *  quant_matrix, int *  skip, int *  map  )

static

Definition at line 235 of file agm.c.

Referenced by decode_inter_plane().

decode_intra_block()

static int decode_intra_block ( AGMContext *  s, GetBitContext *  gb, const int *  quant_matrix, int *  skip, int *  dc_level  )

static

Definition at line 271 of file agm.c.

Referenced by decode_intra_plane().

decode_intra_plane()

static int decode_intra_plane ( AGMContext *  s, GetBitContext *  gb, int  size, const int *  quant_matrix, AVFrame *  frame, int  plane  )

static

Definition at line 311 of file agm.c.

Referenced by decode_intra().

decode_inter_block()

static int decode_inter_block ( AGMContext *  s, GetBitContext *  gb, const int *  quant_matrix, int *  skip, int *  map  )

static

Definition at line 360 of file agm.c.

Referenced by decode_inter_plane().

decode_inter_plane()

static int decode_inter_plane ( AGMContext *  s, GetBitContext *  gb, int  size, const int *  quant_matrix, AVFrame *  frame, AVFrame *  prev, int  plane  )

static

Definition at line 390 of file agm.c.

Referenced by decode_inter().

compute_quant_matrix()

static void compute_quant_matrix ( AGMContext *  s, double  qscale  )

static

Definition at line 532 of file agm.c.

Referenced by decode_inter(), and decode_intra().

decode_raw_intra_rgb()

static int decode_raw_intra_rgb ( AVCodecContext *  avctx, GetByteContext *  gbyte, AVFrame *  frame  )

static

Definition at line 571 of file agm.c.

Referenced by decode_frame().

fill_pixels()

static int fill_pixels ( uint8_t **  y0, uint8_t **  y1, uint8_t **  u, uint8_t **  v, int  ylinesize, int  ulinesize, int  vlinesize, uint8_t *  fill, int *  nx, int *  ny, int *  np, int  w, int  h  )

static

Definition at line 594 of file agm.c.

Referenced by decode_runlen().

decode_runlen_rgb()

static int decode_runlen_rgb ( AVCodecContext *  avctx, GetByteContext *  gbyte, AVFrame *  frame  )

static

Definition at line 659 of file agm.c.

Referenced by decode_frame().

decode_runlen()

static int decode_runlen ( AVCodecContext *  avctx, GetByteContext *  gbyte, AVFrame *  frame  )

static

Definition at line 712 of file agm.c.

Referenced by decode_frame().

decode_raw_intra()

static int decode_raw_intra ( AVCodecContext *  avctx, GetByteContext *  gbyte, AVFrame *  frame  )

static

Definition at line 762 of file agm.c.

Referenced by decode_frame().

decode_intra()

static int decode_intra ( AVCodecContext *  avctx, GetBitContext *  gb, AVFrame *  frame  )

static

Definition at line 795 of file agm.c.

Referenced by decode_frame().

decode_motion_vectors()

static int decode_motion_vectors ( AVCodecContext *  avctx, GetBitContext *  gb  )

static

Definition at line 830 of file agm.c.

Referenced by decode_inter().

decode_inter()

static int decode_inter ( AVCodecContext *  avctx, GetBitContext *  gb, AVFrame *  frame, AVFrame *  prev  )

static

Definition at line 871 of file agm.c.

Referenced by decode_frame().

get_tree_codes()

static void get_tree_codes ( uint32_t *  codes, Node *  nodes, int  idx, uint32_t  pfx, int  bitpos  )

static

Definition at line 918 of file agm.c.

Referenced by make_new_tree().

make_new_tree()

static int make_new_tree ( const uint8_t *  bitlens, uint32_t *  codes  )

static

Definition at line 928 of file agm.c.

Referenced by build_huff().

build_huff()

static int build_huff ( const uint8_t *  bitlen, VLC *  vlc  )

static

Definition at line 1013 of file agm.c.

Referenced by decode_huffman2().

decode_huffman2()

static int decode_huffman2 ( AVCodecContext *  avctx, int  header, int  size  )

static

Definition at line 1042 of file agm.c.

Referenced by decode_frame().

decode_frame()

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

static

Definition at line 1094 of file agm.c.

decode_init()

static av_cold int decode_init ( AVCodecContext *  avctx )

static

Definition at line 1232 of file agm.c.

decode_flush()

static void decode_flush ( AVCodecContext *  avctx )

static

Definition at line 1261 of file agm.c.

decode_close()

static av_cold int decode_close ( AVCodecContext *  avctx )

static

Definition at line 1268 of file agm.c.

Variable Documentation

unscaled_luma

const uint8_t unscaled_luma[64]

static

Initial value:

= {
    16, 11, 10, 16, 24, 40, 51, 61, 12, 12, 14, 19,
    26, 58, 60, 55, 14, 13, 16, 24, 40, 57, 69, 56,
    14, 17, 22, 29, 51, 87, 80, 62, 18, 22, 37, 56,
    68,109,103, 77, 24, 35, 55, 64, 81,104,113, 92,
    49, 64, 78, 87,103,121,120,101, 72, 92, 95, 98,
    112,100,103,99
}

Definition at line 36 of file agm.c.

Referenced by compute_quant_matrix().

unscaled_chroma

const uint8_t unscaled_chroma[64]

static

Initial value:

= {
    17, 18, 24, 47, 99, 99, 99, 99, 18, 21, 26, 66,
    99, 99, 99, 99, 24, 26, 56, 99, 99, 99, 99, 99,
    47, 66, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
    99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
    99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99,
    99, 99, 99, 99
}

Definition at line 45 of file agm.c.

Referenced by compute_quant_matrix().

ff_agm_decoder

AVCodec ff_agm_decoder

Initial value:

= {
    .name             = "agm",
    .long_name        = NULL_IF_CONFIG_SMALL("Amuse Graphics Movie"),
    .type             = AVMEDIA_TYPE_VIDEO,
    .id               = AV_CODEC_ID_AGM,
    .priv_data_size   = sizeof(AGMContext),
    .init             = decode_init,
    .close            = decode_close,
    .decode           = decode_frame,
    .flush            = decode_flush,
    .capabilities     = AV_CODEC_CAP_DR1,
    .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE |
                        FF_CODEC_CAP_INIT_CLEANUP |
                        FF_CODEC_CAP_EXPORTS_CROPPING,
}

Definition at line 1286 of file agm.c.