rpza.c File Reference

QT RPZA Video Decoder by Roberto Togni For more information about the RPZA format, visit: http://www.pcisys.net/~melanson/codecs/. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h"

Go to the source code of this file.

Data Structures

struct  RpzaContext
 

Macros

#define ADVANCE_BLOCK()
 

Typedefs

typedef struct RpzaContext RpzaContext
 

Functions

static void rpza_decode_stream (RpzaContext *s)
 
static av_cold int rpza_decode_init (AVCodecContext *avctx)
 
static int rpza_decode_frame (AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
 
static av_cold int rpza_decode_end (AVCodecContext *avctx)
 

Variables

AVCodec ff_rpza_decoder
 

Detailed Description

QT RPZA Video Decoder by Roberto Togni For more information about the RPZA format, visit: http://www.pcisys.net/~melanson/codecs/.

The RPZA decoder outputs RGB555 colorspace data.

Note that this decoder reads big endian RGB555 pixel values from the bytestream, arranges them in the host's endian order, and outputs them to the final rendered map in the same host endian order. This is intended behavior as the libavcodec documentation states that RGB555 pixels shall be stored in native CPU endianness.

Definition in file rpza.c.

Macro Definition Documentation

#define ADVANCE_BLOCK ( )
Value:
{ \
pixel_ptr += 4; \
if (pixel_ptr >= width) \
{ \
pixel_ptr = 0; \
row_ptr += stride * 4; \
} \
total_blocks--; \
if (total_blocks < 0) \
{ \
av_log(s->avctx, AV_LOG_ERROR, "warning: block counter just went negative (this should not happen)\n"); \
return; \
} \
}
int width
Definition: rotozoom.c:164
int stride
Definition: mace.c:143
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:140
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:111

Definition at line 55 of file rpza.c.

Referenced by rpza_decode_stream().

Typedef Documentation

typedef struct RpzaContext RpzaContext

Function Documentation

static av_cold int rpza_decode_end ( AVCodecContext avctx)
static

Definition at line 275 of file rpza.c.

static int rpza_decode_frame ( AVCodecContext avctx,
void data,
int *  data_size,
AVPacket avpkt 
)
static

Definition at line 248 of file rpza.c.

static av_cold int rpza_decode_init ( AVCodecContext avctx)
static

Definition at line 236 of file rpza.c.

static void rpza_decode_stream ( RpzaContext s)
static

Definition at line 71 of file rpza.c.

Referenced by rpza_decode_frame().

Variable Documentation

AVCodec ff_rpza_decoder
Initial value:
= {
.name = "rpza",
.priv_data_size = sizeof(RpzaContext),
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("QuickTime video (RPZA)"),
}
struct RpzaContext RpzaContext
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
Definition: mimic.c:228
static int init(AVCodecParserContext *s)
Definition: h264_parser.c:336
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:719
static int rpza_decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
Definition: rpza.c:248
static av_cold int rpza_decode_end(AVCodecContext *avctx)
Definition: rpza.c:275
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:191
static av_cold int rpza_decode_init(AVCodecContext *avctx)
Definition: rpza.c:236
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:327

Definition at line 285 of file rpza.c.