hvirtual/quicktime/ffmpeg/libavcodec/vmdav.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "common.h"
#include "avcodec.h"
#include "dsputil.h"

Include dependency graph for vmdav.c:

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Data Structures

struct VmdVideoContext

struct VmdAudioContext

Defines

#define VMD_HEADER_SIZE   0x330

#define PALETTE_COUNT   256

#define QUEUE_SIZE   0x1000

#define QUEUE_MASK   0x0FFF

Functions

static void lz_unpack (unsigned char *src, unsigned char *dest)

static int rle_unpack (unsigned char *src, unsigned char *dest, int len)

static void vmd_decode (VmdVideoContext *s)

static int vmdvideo_decode_init (AVCodecContext *avctx)

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

static int vmdvideo_decode_end (AVCodecContext *avctx)

static int vmdaudio_decode_init (AVCodecContext *avctx)

static void vmdaudio_decode_audio (VmdAudioContext *s, unsigned char *data, uint8_t *buf, int ratio)

static int vmdaudio_loadsound (VmdAudioContext *s, unsigned char *data, uint8_t *buf, int silence)

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

Variables

AVCodec vmdvideo_decoder

AVCodec vmdaudio_decoder

Define Documentation

#define PALETTE_COUNT 256

Definition at line 51 of file vmdav.c.

#define QUEUE_MASK 0x0FFF

Definition at line 73 of file vmdav.c.

Referenced by lz_unpack().

#define QUEUE_SIZE 0x1000

Definition at line 72 of file vmdav.c.

Referenced by lz_unpack().

#define VMD_HEADER_SIZE 0x330

Definition at line 50 of file vmdav.c.

Referenced by vmdvideo_decode_init().

Function Documentation

static void lz_unpack	(	unsigned char *	src,
		unsigned char *	dest
	)			`[static]`

Definition at line 75 of file vmdav.c.

References LE_32, QUEUE_MASK, QUEUE_SIZE, and s.

Referenced by vmd_decode().

static int rle_unpack	(	unsigned char *	src,
		unsigned char *	dest,
		int	len
	)			`[static]`

Definition at line 137 of file vmdav.c.

References memcpy.

Referenced by vmd_decode().

static void vmd_decode ( VmdVideoContext * s ) [static]

Definition at line 170 of file vmdav.c.

References av_log(), AV_LOG_ERROR, VmdVideoContext::avctx, b, VmdVideoContext::buf, VmdVideoContext::frame, frame_height, frame_width, AVCodecContext::height, LE_16, lz_unpack(), memcpy, VmdVideoContext::palette, PALETTE_COUNT, VmdVideoContext::prev_frame, r, rle_unpack(), VmdVideoContext::size, VmdVideoContext::unpack_buffer, and AVCodecContext::width.

Referenced by vmdvideo_decode_frame().

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static void vmdaudio_decode_audio	(	VmdAudioContext *	s,
		unsigned char *	data,
		uint8_t *	buf,
		int	ratio
	)			`[static]`

Definition at line 456 of file vmdav.c.

Referenced by vmdaudio_loadsound().

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

Definition at line 507 of file vmdav.c.

References VmdAudioContext::bits, VmdAudioContext::block_align, LE_32, AVCodecContext::priv_data, s, and vmdaudio_loadsound().

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static int vmdaudio_decode_init ( AVCodecContext * avctx ) [static]

Definition at line 399 of file vmdav.c.

References av_log(), AV_LOG_DEBUG, VmdAudioContext::avctx, VmdAudioContext::bits, AVCodecContext::bits_per_sample, AVCodecContext::block_align, VmdAudioContext::block_align, AVCodecContext::channels, VmdAudioContext::channels, AVCodecContext::priv_data, s, AVCodecContext::sample_rate, VmdAudioContext::steps128, VmdAudioContext::steps16, and VmdAudioContext::steps8.

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static int vmdaudio_loadsound	(	VmdAudioContext *	s,
		unsigned char *	data,
		uint8_t *	buf,
		int	silence
	)			`[static]`

Definition at line 461 of file vmdav.c.

References av_log(), AV_LOG_INFO, VmdAudioContext::avctx, VmdAudioContext::bits, VmdAudioContext::block_align, VmdAudioContext::channels, and vmdaudio_decode_audio().

Referenced by vmdaudio_decode_frame().

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static int vmdvideo_decode_end ( AVCodecContext * avctx ) [static]

Definition at line 372 of file vmdav.c.

References av_free(), VmdVideoContext::prev_frame, AVCodecContext::priv_data, AVCodecContext::release_buffer, s, and VmdVideoContext::unpack_buffer.

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

Definition at line 336 of file vmdav.c.

References av_log(), AV_LOG_ERROR, VmdVideoContext::avctx, VmdVideoContext::buf, VmdVideoContext::frame, AVCodecContext::get_buffer, memcpy, VmdVideoContext::palette, PALETTE_COUNT, VmdVideoContext::prev_frame, AVCodecContext::priv_data, AVCodecContext::release_buffer, s, VmdVideoContext::size, and vmd_decode().

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static int vmdvideo_decode_init ( AVCodecContext * avctx ) [static]

Definition at line 294 of file vmdav.c.

References av_log(), AV_LOG_ERROR, av_malloc(), VmdVideoContext::avctx, b, VmdVideoContext::dsp, dsputil_init(), AVCodecContext::extradata, AVCodecContext::extradata_size, VmdVideoContext::frame, AVCodecContext::has_b_frames, LE_32, NULL, VmdVideoContext::palette, PALETTE_COUNT, AVCodecContext::pix_fmt, PIX_FMT_PAL8, VmdVideoContext::prev_frame, AVCodecContext::priv_data, r, s, VmdVideoContext::unpack_buffer, and VMD_HEADER_SIZE.

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Variable Documentation

AVCodec vmdaudio_decoder

Initial value:

 {
    "vmdaudio",
    CODEC_TYPE_AUDIO,
    CODEC_ID_VMDAUDIO,
    sizeof(VmdAudioContext),
    vmdaudio_decode_init,
    NULL,
    NULL,
    vmdaudio_decode_frame,
}

Definition at line 569 of file vmdav.c.

Referenced by avcodec_register_all().

AVCodec vmdvideo_decoder

Initial value:

 {
    "vmdvideo",
    CODEC_TYPE_VIDEO,
    CODEC_ID_VMDVIDEO,
    sizeof(VmdVideoContext),
    vmdvideo_decode_init,
    NULL,
    vmdvideo_decode_end,
    vmdvideo_decode_frame,
    CODEC_CAP_DR1,
}

Definition at line 557 of file vmdav.c.

Referenced by avcodec_register_all().


Data Structures
struct	VmdVideoContext
struct	VmdAudioContext
Defines
#define	VMD_HEADER_SIZE 0x330
#define	PALETTE_COUNT 256
#define	QUEUE_SIZE 0x1000
#define	QUEUE_MASK 0x0FFF
Functions
static void	lz_unpack (unsigned char src, unsigned char dest)
static int	rle_unpack (unsigned char src, unsigned char dest, int len)
static void	vmd_decode (VmdVideoContext *s)
static int	vmdvideo_decode_init (AVCodecContext *avctx)
static int	vmdvideo_decode_frame (AVCodecContext avctx, void data, int data_size, uint8_t buf, int buf_size)
static int	vmdvideo_decode_end (AVCodecContext *avctx)
static int	vmdaudio_decode_init (AVCodecContext *avctx)
static void	vmdaudio_decode_audio (VmdAudioContext s, unsigned char data, uint8_t *buf, int ratio)
static int	vmdaudio_loadsound (VmdAudioContext s, unsigned char data, uint8_t *buf, int silence)
static int	vmdaudio_decode_frame (AVCodecContext avctx, void data, int data_size, uint8_t buf, int buf_size)
Variables
AVCodec	vmdvideo_decoder
AVCodec	vmdaudio_decoder