libavcodec/vp3.c File Reference

On2 VP3 Video Decoder. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "vp3data.h"
#include "xiph.h"

Go to the source code of this file.

Data Structures

struct Coeff

struct Vp3Fragment

struct Vp3DecodeContext

Defines

#define FRAGMENT_PIXELS   8

#define KEYFRAMES_ONLY   0

#define DEBUG_VP3   0

#define DEBUG_INIT   0

#define DEBUG_DEQUANTIZERS   0

#define DEBUG_BLOCK_CODING   0

#define DEBUG_MODES   0

#define DEBUG_VECTORS   0

#define DEBUG_TOKEN   0

#define DEBUG_VLC   0

#define DEBUG_DC_PRED   0

#define DEBUG_IDCT   0

#define SB_NOT_CODED   0

#define SB_PARTIALLY_CODED   1

#define SB_FULLY_CODED   2

#define MODE_INTER_NO_MV   0

#define MODE_INTRA   1

#define MODE_INTER_PLUS_MV   2

#define MODE_INTER_LAST_MV   3

#define MODE_INTER_PRIOR_LAST   4

#define MODE_USING_GOLDEN   5

#define MODE_GOLDEN_MV   6

#define MODE_INTER_FOURMV   7

#define CODING_MODE_COUNT   8

#define MODE_COPY   8

#define MIN_DEQUANT_VAL   2

#define COMPATIBLE_FRAME(x)   (compatible_frame[s->all_fragments[x].coding_method] == current_frame_type)

#define FRAME_CODED(x)   (s->all_fragments[x].coding_method != MODE_COPY)

#define DC_COEFF(u)   (s->coeffs[u].index ? 0 : s->coeffs[u].coeff)

#define PUL   8

#define PU   4

#define PUR   2

#define PL   1

Functions

static void debug_vp3 (const char *format,...)

static void debug_init (const char *format,...)

static void debug_dequantizers (const char *format,...)

static void debug_block_coding (const char *format,...)

static void debug_modes (const char *format,...)

static void debug_vectors (const char *format,...)

static void debug_token (const char *format,...)

static void debug_vlc (const char *format,...)

static void debug_dc_pred (const char *format,...)

static void debug_idct (const char *format,...)

static int init_block_mapping (Vp3DecodeContext *s)

static void init_frame (Vp3DecodeContext *s, GetBitContext *gb)

static void init_dequantizer (Vp3DecodeContext *s)

static void init_loop_filter (Vp3DecodeContext *s)

static int unpack_superblocks (Vp3DecodeContext *s, GetBitContext *gb)

static int unpack_modes (Vp3DecodeContext *s, GetBitContext *gb)

static int unpack_vectors (Vp3DecodeContext *s, GetBitContext *gb)

static int unpack_vlcs (Vp3DecodeContext *s, GetBitContext *gb, VLC *table, int coeff_index, int first_fragment, int last_fragment, int eob_run)

static int unpack_dct_coeffs (Vp3DecodeContext *s, GetBitContext *gb)

static void reverse_dc_prediction (Vp3DecodeContext *s, int first_fragment, int fragment_width, int fragment_height)

static void horizontal_filter (unsigned char *first_pixel, int stride, int *bounding_values)

static void vertical_filter (unsigned char *first_pixel, int stride, int *bounding_values)

static void render_slice (Vp3DecodeContext *s, int slice)

static void apply_loop_filter (Vp3DecodeContext *s)

static void vp3_calculate_pixel_addresses (Vp3DecodeContext *s)

static void theora_calculate_pixel_addresses (Vp3DecodeContext *s)

static int vp3_decode_init (AVCodecContext *avctx)

static int vp3_decode_frame (AVCodecContext *avctx, void *data, int *data_size, const uint8_t *buf, int buf_size)

static int vp3_decode_end (AVCodecContext *avctx)

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

Variables

static int ModeAlphabet [7][CODING_MODE_COUNT]

AVCodec vp3_decoder

Detailed Description

On2 VP3 Video Decoder.

VP3 Video Decoder by Mike Melanson (mike at multimedia.cx) For more information about the VP3 coding process, visit: http://multimedia.cx/

Theora decoder by Alex Beregszaszi

Definition in file vp3.c.

Define Documentation

#define CODING_MODE_COUNT 8

Definition at line 170 of file vp3.c.

#define COMPATIBLE_FRAME ( x ) (compatible_frame[s->all_fragments[x].coding_method] == current_frame_type)

Definition at line 1310 of file vp3.c.

Referenced by reverse_dc_prediction().

#define DC_COEFF ( u ) (s->coeffs[u].index ? 0 : s->coeffs[u].coeff)

Definition at line 1313 of file vp3.c.

Referenced by render_slice(), and reverse_dc_prediction().

#define DEBUG_BLOCK_CODING 0

Definition at line 70 of file vp3.c.

#define DEBUG_DC_PRED 0

Definition at line 75 of file vp3.c.

#define DEBUG_DEQUANTIZERS 0

Definition at line 69 of file vp3.c.

#define DEBUG_IDCT 0

Definition at line 76 of file vp3.c.

#define DEBUG_INIT 0

Definition at line 68 of file vp3.c.

#define DEBUG_MODES 0

Definition at line 71 of file vp3.c.

#define DEBUG_TOKEN 0

Definition at line 73 of file vp3.c.

#define DEBUG_VECTORS 0

Definition at line 72 of file vp3.c.

#define DEBUG_VLC 0

Definition at line 74 of file vp3.c.

#define DEBUG_VP3 0

Definition at line 67 of file vp3.c.

#define FRAGMENT_PIXELS 8

Definition at line 44 of file vp3.c.

Referenced by render_slice(), theora_calculate_pixel_addresses(), vp3_calculate_pixel_addresses(), and vp3_decode_init().

#define FRAME_CODED ( x ) (s->all_fragments[x].coding_method != MODE_COPY)

Definition at line 1312 of file vp3.c.

Referenced by reverse_dc_prediction().

#define KEYFRAMES_ONLY 0

Definition at line 65 of file vp3.c.

#define MIN_DEQUANT_VAL 2

Definition at line 219 of file vp3.c.

#define MODE_COPY 8

Definition at line 173 of file vp3.c.

Referenced by apply_loop_filter(), render_slice(), reverse_dc_prediction(), unpack_modes(), unpack_superblocks(), and unpack_vectors().

#define MODE_GOLDEN_MV 6

Definition at line 168 of file vp3.c.

Referenced by render_slice(), and unpack_vectors().

#define MODE_INTER_FOURMV 7

Definition at line 169 of file vp3.c.

Referenced by unpack_vectors().

#define MODE_INTER_LAST_MV 3

Definition at line 165 of file vp3.c.

Referenced by unpack_vectors().

#define MODE_INTER_NO_MV 0

Definition at line 162 of file vp3.c.

Referenced by unpack_superblocks().

#define MODE_INTER_PLUS_MV 2

Definition at line 164 of file vp3.c.

Referenced by unpack_vectors().

#define MODE_INTER_PRIOR_LAST 4

Definition at line 166 of file vp3.c.

Referenced by unpack_vectors().

#define MODE_INTRA 1

Definition at line 163 of file vp3.c.

Referenced by render_slice(), and unpack_modes().

#define MODE_USING_GOLDEN 5

Definition at line 167 of file vp3.c.

Referenced by render_slice().

#define PL 1

#define PU 4

Referenced by reverse_dc_prediction().

#define PUL 8

Referenced by reverse_dc_prediction().

#define PUR 2

Referenced by reverse_dc_prediction().

#define SB_FULLY_CODED 2

Definition at line 160 of file vp3.c.

Referenced by unpack_superblocks().

#define SB_NOT_CODED 0

Definition at line 158 of file vp3.c.

Referenced by unpack_superblocks().

#define SB_PARTIALLY_CODED 1

Definition at line 159 of file vp3.c.

Referenced by unpack_superblocks().

Function Documentation

static void apply_loop_filter ( Vp3DecodeContext * s ) [static]

Definition at line 1751 of file vp3.c.

Referenced by vp3_decode_frame().

static void debug_block_coding	(	const char *	format,
			...
	)			`[inline, static]`

Definition at line 99 of file vp3.c.

Referenced by unpack_superblocks().

static void debug_dc_pred	(	const char *	format,
			...
	)			`[inline, static]`

Definition at line 129 of file vp3.c.

Referenced by reverse_dc_prediction().

static void debug_dequantizers	(	const char *	format,
			...
	)			`[inline, static]`

Definition at line 93 of file vp3.c.

static void debug_idct	(	const char *	format,
			...
	)			`[inline, static]`

Definition at line 135 of file vp3.c.

Referenced by render_slice().

static void debug_init	(	const char *	format,
			...
	)			`[inline, static]`

Definition at line 87 of file vp3.c.

Referenced by init_block_mapping(), theora_calculate_pixel_addresses(), vp3_calculate_pixel_addresses(), and vp3_decode_init().

static void debug_modes	(	const char *	format,
			...
	)			`[inline, static]`

Definition at line 105 of file vp3.c.

Referenced by unpack_modes().

static void debug_token	(	const char *	format,
			...
	)			`[inline, static]`

Definition at line 117 of file vp3.c.

static void debug_vectors	(	const char *	format,
			...
	)			`[inline, static]`

Definition at line 111 of file vp3.c.

Referenced by unpack_vectors().

static void debug_vlc	(	const char *	format,
			...
	)			`[inline, static]`

Definition at line 123 of file vp3.c.

Referenced by unpack_vlcs().

static void debug_vp3	(	const char *	format,
			...
	)			`[inline, static]`

Definition at line 81 of file vp3.c.

Referenced by init_block_mapping(), init_dequantizer(), reverse_dc_prediction(), unpack_dct_coeffs(), unpack_modes(), unpack_superblocks(), and unpack_vectors().

static void horizontal_filter	(	unsigned char *	first_pixel,
		int	stride,
		int *	bounding_values
	)			`[static]`

Definition at line 1718 of file vp3.c.

Referenced by apply_loop_filter(), and render_slice().

static int init_block_mapping ( Vp3DecodeContext * s ) [static]

Definition at line 343 of file vp3.c.

Referenced by vp3_decode_init().

static void init_dequantizer ( Vp3DecodeContext * s ) [static]

Definition at line 605 of file vp3.c.

Referenced by vp3_decode_frame().

static void init_frame	(	Vp3DecodeContext *	s,
		GetBitContext *	gb
	)			`[static]`

Definition at line 584 of file vp3.c.

static void init_loop_filter ( Vp3DecodeContext * s ) [static]

Definition at line 645 of file vp3.c.

Referenced by vp3_decode_frame().

static int read_huffman_tree	(	AVCodecContext *	avctx,
		GetBitContext *	gb
	)			`[static]`

Definition at line 2345 of file vp3.c.

static void render_slice	(	Vp3DecodeContext *	s,
		int	slice
	)			`[static]`

Definition at line 1498 of file vp3.c.

Referenced by vp3_decode_frame().

static void reverse_dc_prediction	(	Vp3DecodeContext *	s,
		int	first_fragment,
		int	fragment_width,
		int	fragment_height
	)			`[static]`

Definition at line 1315 of file vp3.c.

Referenced by vp3_decode_frame().

static void theora_calculate_pixel_addresses ( Vp3DecodeContext * s ) [static]

Definition at line 1887 of file vp3.c.

Referenced by vp3_decode_frame().

static int unpack_dct_coeffs	(	Vp3DecodeContext *	s,
		GetBitContext *	gb
	)			`[static]`

Definition at line 1217 of file vp3.c.

Referenced by vp3_decode_frame().

static int unpack_modes	(	Vp3DecodeContext *	s,
		GetBitContext *	gb
	)			`[static]`

Definition at line 873 of file vp3.c.

Referenced by vp3_decode_frame().

static int unpack_superblocks	(	Vp3DecodeContext *	s,
		GetBitContext *	gb
	)			`[static]`

Definition at line 667 of file vp3.c.

Referenced by vp3_decode_frame().

static int unpack_vectors	(	Vp3DecodeContext *	s,
		GetBitContext *	gb
	)			`[static]`

Definition at line 958 of file vp3.c.

Referenced by vp3_decode_frame().

static int unpack_vlcs	(	Vp3DecodeContext *	s,
		GetBitContext *	gb,
		VLC *	table,
		int	coeff_index,
		int	first_fragment,
		int	last_fragment,
		int	eob_run
	)			`[static]`

Definition at line 1141 of file vp3.c.

Referenced by unpack_dct_coeffs().

static void vertical_filter	(	unsigned char *	first_pixel,
		int	stride,
		int *	bounding_values
	)			`[static]`

Definition at line 1734 of file vp3.c.

Referenced by apply_loop_filter(), and render_slice().

static void vp3_calculate_pixel_addresses ( Vp3DecodeContext * s ) [static]

Definition at line 1840 of file vp3.c.

Referenced by vp3_decode_frame().

static int vp3_decode_end ( AVCodecContext * avctx ) [static]

Definition at line 2322 of file vp3.c.

static int vp3_decode_frame	(	AVCodecContext *	avctx,
		void *	data,
		int *	data_size,
		const uint8_t *	buf,
		int	buf_size
	)			`[static]`

Definition at line 2136 of file vp3.c.

static int vp3_decode_init ( AVCodecContext * avctx ) [static]

Definition at line 1936 of file vp3.c.

Variable Documentation

int ModeAlphabet[7][CODING_MODE_COUNT] [static]

Definition at line 176 of file vp3.c.

Referenced by unpack_modes().

AVCodec vp3_decoder

Initial value:

 {
    "vp3",
    CODEC_TYPE_VIDEO,
    CODEC_ID_VP3,
    sizeof(Vp3DecodeContext),
    vp3_decode_init,
    NULL,
    vp3_decode_end,
    vp3_decode_frame,
    0,
    NULL
}

Definition at line 2640 of file vp3.c.


Data Structures
struct	Coeff
struct	Vp3Fragment
struct	Vp3DecodeContext
Defines
#define	FRAGMENT_PIXELS 8
#define	KEYFRAMES_ONLY 0
#define	DEBUG_VP3 0
#define	DEBUG_INIT 0
#define	DEBUG_DEQUANTIZERS 0
#define	DEBUG_BLOCK_CODING 0
#define	DEBUG_MODES 0
#define	DEBUG_VECTORS 0
#define	DEBUG_TOKEN 0
#define	DEBUG_VLC 0
#define	DEBUG_DC_PRED 0
#define	DEBUG_IDCT 0
#define	SB_NOT_CODED 0
#define	SB_PARTIALLY_CODED 1
#define	SB_FULLY_CODED 2
#define	MODE_INTER_NO_MV 0
#define	MODE_INTRA 1
#define	MODE_INTER_PLUS_MV 2
#define	MODE_INTER_LAST_MV 3
#define	MODE_INTER_PRIOR_LAST 4
#define	MODE_USING_GOLDEN 5
#define	MODE_GOLDEN_MV 6
#define	MODE_INTER_FOURMV 7
#define	CODING_MODE_COUNT 8
#define	MODE_COPY 8
#define	MIN_DEQUANT_VAL 2
#define	COMPATIBLE_FRAME(x) (compatible_frame[s->all_fragments[x].coding_method] == current_frame_type)
#define	FRAME_CODED(x) (s->all_fragments[x].coding_method != MODE_COPY)
#define	DC_COEFF(u) (s->coeffs[u].index ? 0 : s->coeffs[u].coeff)
#define	PUL 8
#define	PU 4
#define	PUR 2
#define	PL 1
Functions
static void	debug_vp3 (const char *format,...)
static void	debug_init (const char *format,...)
static void	debug_dequantizers (const char *format,...)
static void	debug_block_coding (const char *format,...)
static void	debug_modes (const char *format,...)
static void	debug_vectors (const char *format,...)
static void	debug_token (const char *format,...)
static void	debug_vlc (const char *format,...)
static void	debug_dc_pred (const char *format,...)
static void	debug_idct (const char *format,...)
static int	init_block_mapping (Vp3DecodeContext *s)
static void	init_frame (Vp3DecodeContext s, GetBitContext gb)
static void	init_dequantizer (Vp3DecodeContext *s)
static void	init_loop_filter (Vp3DecodeContext *s)
static int	unpack_superblocks (Vp3DecodeContext s, GetBitContext gb)
static int	unpack_modes (Vp3DecodeContext s, GetBitContext gb)
static int	unpack_vectors (Vp3DecodeContext s, GetBitContext gb)
static int	unpack_vlcs (Vp3DecodeContext s, GetBitContext gb, VLC *table, int coeff_index, int first_fragment, int last_fragment, int eob_run)
static int	unpack_dct_coeffs (Vp3DecodeContext s, GetBitContext gb)
static void	reverse_dc_prediction (Vp3DecodeContext *s, int first_fragment, int fragment_width, int fragment_height)
static void	horizontal_filter (unsigned char first_pixel, int stride, int bounding_values)
static void	vertical_filter (unsigned char first_pixel, int stride, int bounding_values)
static void	render_slice (Vp3DecodeContext *s, int slice)
static void	apply_loop_filter (Vp3DecodeContext *s)
static void	vp3_calculate_pixel_addresses (Vp3DecodeContext *s)
static void	theora_calculate_pixel_addresses (Vp3DecodeContext *s)
static int	vp3_decode_init (AVCodecContext *avctx)
static int	vp3_decode_frame (AVCodecContext avctx, void data, int data_size, const uint8_t buf, int buf_size)
static int	vp3_decode_end (AVCodecContext *avctx)
static int	read_huffman_tree (AVCodecContext avctx, GetBitContext gb)
Variables
static int	ModeAlphabet [7][CODING_MODE_COUNT]
AVCodec	vp3_decoder