hvirtual/quicktime/ffmpeg/libavcodec/msvideo1.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 msvideo1.c:

Go to the source code of this file.

Data Structures
struct	Msvideo1Context
Defines
#define	PALETTE_COUNT   256
#define	CHECK_STREAM_PTR(n)
Functions
static int	msvideo1_decode_init (AVCodecContext *avctx)
static void	msvideo1_decode_8bit (Msvideo1Context *s)
static void	msvideo1_decode_16bit (Msvideo1Context *s)
static int	msvideo1_decode_frame (AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size)
static int	msvideo1_decode_end (AVCodecContext *avctx)
Variables
AVCodec	msvideo1_decoder

---

Detailed Description

Microsoft Video-1 Decoder by Mike Melanson (melanson@pcisys.net) For more information about the MS Video-1 format, visit: http://www.pcisys.net/~melanson/codecs/

This decoder outputs either PAL8 or RGB555 data, depending on the whether a RGB palette was passed through palctrl; if it's present, then the data is PAL8; RGB555 otherwise.

Definition in file msvideo1.c.

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Define Documentation

#define CHECK_STREAM_PTR

(

n

)

Value:

if ((stream_ptr + n) > s->size ) { \
    av_log(s->avctx, AV_LOG_ERROR, " MS Video-1 warning: stream_ptr out of bounds (%d >= %d)\n", \
      stream_ptr + n, s->size); \
    return; \
  }

Definition at line 42 of file msvideo1.c.

#define PALETTE_COUNT   256

Definition at line 41 of file msvideo1.c.

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Function Documentation

static void msvideo1_decode_16bit

(

Msvideo1Context *

s

)

[static]

Definition at line 190 of file msvideo1.c.

References Msvideo1Context::avctx, Msvideo1Context::buf, CHECK_STREAM_PTR, colors, Msvideo1Context::frame, AVCodecContext::height, LE_16, pixels, stride, and AVCodecContext::width.

Referenced by msvideo1_decode_frame().

static void msvideo1_decode_8bit

(

Msvideo1Context *

s

)

[static]

Definition at line 85 of file msvideo1.c.

References Msvideo1Context::avctx, AVPALETTE_SIZE, Msvideo1Context::buf, CHECK_STREAM_PTR, colors, Msvideo1Context::frame, AVCodecContext::height, memcpy, AVCodecContext::palctrl, AVPaletteControl::palette, AVPaletteControl::palette_changed, AVCodecContext::pix_fmt, PIX_FMT_PAL8, pixels, stride, and AVCodecContext::width.

Referenced by msvideo1_decode_frame().

static int msvideo1_decode_end

(

AVCodecContext *

avctx

)

[static]

Definition at line 327 of file msvideo1.c.

References Msvideo1Context::frame, AVCodecContext::priv_data, AVCodecContext::release_buffer, and s.

static int msvideo1_decode_frame	(	AVCodecContext *	avctx,
		void *	data,
		int *	data_size,
		uint8_t *	buf,
		int	buf_size
	)			[static]

Definition at line 299 of file msvideo1.c.

References av_log(), AV_LOG_ERROR, Msvideo1Context::avctx, Msvideo1Context::buf, FF_BUFFER_HINTS_PRESERVE, FF_BUFFER_HINTS_REUSABLE, FF_BUFFER_HINTS_VALID, Msvideo1Context::frame, Msvideo1Context::mode_8bit, msvideo1_decode_16bit(), msvideo1_decode_8bit(), AVCodecContext::priv_data, AVCodecContext::reget_buffer, s, and Msvideo1Context::size.

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static int msvideo1_decode_init

(

AVCodecContext *

avctx

)

[static]

Definition at line 62 of file msvideo1.c.

References Msvideo1Context::avctx, Msvideo1Context::dsp, dsputil_init(), Msvideo1Context::frame, AVCodecContext::has_b_frames, Msvideo1Context::mode_8bit, NULL, AVCodecContext::palctrl, AVCodecContext::pix_fmt, PIX_FMT_PAL8, PIX_FMT_RGB555, AVCodecContext::priv_data, and s.

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Variable Documentation

AVCodec msvideo1_decoder

Initial value:

 {
    "msvideo1",
    CODEC_TYPE_VIDEO,
    CODEC_ID_MSVIDEO1,
    sizeof(Msvideo1Context),
    msvideo1_decode_init,
    NULL,
    msvideo1_decode_end,
    msvideo1_decode_frame,
    CODEC_CAP_DR1,
}

Definition at line 337 of file msvideo1.c.

Referenced by avcodec_register_all().