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 <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libavutil/internal.h"
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	RpzaContext

Macros
#define	CHECK_BLOCK()
#define	ADVANCE_BLOCK()

Functions
static int	rpza_decode_stream (RpzaContext *s)
static av_cold int	rpza_decode_init (AVCodecContext *avctx)
static int	rpza_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, 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

CHECK_BLOCK

#define CHECK_BLOCK

(

)

Value:

if (total_blocks < 1) {                                                    \
        av_log(s->avctx, AV_LOG_ERROR,                                         \
               "Block counter just went negative (this should not happen)\n"); \
        return AVERROR_INVALIDDATA;                                            \
    }                                                                          \

Definition at line 55 of file rpza.c.

Referenced by rpza_decode_stream().

ADVANCE_BLOCK

#define ADVANCE_BLOCK

(

)

Value:

{                               \
        pixel_ptr += 4;             \
        if (pixel_ptr >= width)     \
        {                           \
            pixel_ptr = 0;          \
            row_ptr  += stride * 4; \
        }                           \
        total_blocks--;             \
    }

Definition at line 62 of file rpza.c.

Referenced by rpza_decode_stream().

Function Documentation

rpza_decode_stream()

static int rpza_decode_stream ( RpzaContext *  s )

static

Definition at line 73 of file rpza.c.

Referenced by rpza_decode_frame().

rpza_decode_init()

static av_cold int rpza_decode_init ( AVCodecContext *  avctx )

static

Definition at line 236 of file rpza.c.

rpza_decode_frame()

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

static

Definition at line 250 of file rpza.c.

rpza_decode_end()

static av_cold int rpza_decode_end ( AVCodecContext *  avctx )

static

Definition at line 275 of file rpza.c.

Variable Documentation

ff_rpza_decoder

AVCodec ff_rpza_decoder

Initial value:

= {
    .name           = "rpza",
    .long_name      = NULL_IF_CONFIG_SMALL("QuickTime video (RPZA)"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_RPZA,
    .priv_data_size = sizeof(RpzaContext),
    .init           = rpza_decode_init,
    .close          = rpza_decode_end,
    .decode         = rpza_decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1,
}

Definition at line 284 of file rpza.c.