hvirtual/quicktime/ffmpeg/libavcodec/rpza.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 rpza.c:

Go to the source code of this file.

Data Structures
struct	RpzaContext
Defines
#define	ADVANCE_BLOCK()
Functions
static void	rpza_decode_stream (RpzaContext *s)
static int	rpza_decode_init (AVCodecContext *avctx)
static int	rpza_decode_frame (AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size)
static int	rpza_decode_end (AVCodecContext *avctx)
Variables
AVCodec	rpza_decoder

---

Detailed Description

QT RPZA Video Decoder by Roberto Togni <rtogni@bresciaonline.it> 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 ffmpeg documentation states that RGB555 pixels shall be stored in native CPU endianness.

Definition in file rpza.c.

---

Define 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; \
    } \
}

Definition at line 56 of file rpza.c.

Referenced by rpza_decode_stream(), and smc_decode_stream().

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Function Documentation

static int rpza_decode_end

(

AVCodecContext *

avctx

)

[static]

Definition at line 270 of file rpza.c.

References RpzaContext::frame, AVCodecContext::priv_data, AVCodecContext::release_buffer, and s.

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

Definition at line 245 of file rpza.c.

References av_log(), AV_LOG_ERROR, RpzaContext::buf, FF_BUFFER_HINTS_PRESERVE, FF_BUFFER_HINTS_REUSABLE, FF_BUFFER_HINTS_VALID, RpzaContext::frame, AVCodecContext::priv_data, AVCodecContext::reget_buffer, rpza_decode_stream(), s, and RpzaContext::size.

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static int rpza_decode_init

(

AVCodecContext *

avctx

)

[static]

Definition at line 231 of file rpza.c.

References RpzaContext::avctx, RpzaContext::dsp, dsputil_init(), RpzaContext::frame, AVCodecContext::has_b_frames, NULL, AVCodecContext::pix_fmt, PIX_FMT_RGB555, AVCodecContext::priv_data, and s.

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static void rpza_decode_stream

(

RpzaContext *

s

)

[static]

Definition at line 72 of file rpza.c.

References ADVANCE_BLOCK, av_log(), AV_LOG_ERROR, RpzaContext::avctx, BE_16, BE_32, RpzaContext::buf, RpzaContext::frame, AVCodecContext::height, pixels, RpzaContext::size, stride, tb, AVCodecContext::width, and width.

Referenced by rpza_decode_frame().

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Variable Documentation

AVCodec rpza_decoder

Initial value:

 {
    "rpza",
    CODEC_TYPE_VIDEO,
    CODEC_ID_RPZA,
    sizeof(RpzaContext),
    rpza_decode_init,
    NULL,
    rpza_decode_end,
    rpza_decode_frame,
    CODEC_CAP_DR1,
}

Definition at line 280 of file rpza.c.

Referenced by avcodec_register_all().