libavcodec/pngdec.c File Reference

#include "avcodec.h"
#include "bytestream.h"
#include "png.h"
#include <zlib.h>

Go to the source code of this file.

Data Structures
struct	PNGDecContext
Functions
static void	png_put_interlaced_row (uint8_t *dst, int width, int bits_per_pixel, int pass, int color_type, const uint8_t *src)
static void	png_filter_row (uint8_t *dst, int filter_type, uint8_t *src, uint8_t *last, int size, int bpp)
static void	convert_to_rgb32 (uint8_t *dst, const uint8_t *src, int width)
static void	png_handle_row (PNGDecContext *s)
static int	png_decode_idat (PNGDecContext *s, int length)
static int	decode_frame (AVCodecContext *avctx, void *data, int *data_size, const uint8_t *buf, int buf_size)
static int	png_dec_init (AVCodecContext *avctx)
Variables
static const uint8_t	png_pass_dsp_ymask [NB_PASSES]
static const uint8_t	png_pass_dsp_mask [NB_PASSES]
AVCodec	png_decoder

---

Function Documentation

static void convert_to_rgb32	(	uint8_t *	dst,
		const uint8_t *	src,
		int	width
	)			[static]

Definition at line 199 of file pngdec.c.

Referenced by png_handle_row().

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

Definition at line 313 of file pngdec.c.

static int png_dec_init

(

AVCodecContext *

avctx

)

[static]

Definition at line 532 of file pngdec.c.

static int png_decode_idat	(	PNGDecContext *	s,
		int	length
	)			[static]

Definition at line 286 of file pngdec.c.

Referenced by decode_frame().

static void png_filter_row	(	uint8_t *	dst,
		int	filter_type,
		uint8_t *	src,
		uint8_t *	last,
		int	size,
		int	bpp
	)			[static]

Definition at line 134 of file pngdec.c.

Referenced by png_handle_row().

static void png_handle_row

(

PNGDecContext *

s

)

[static]

Definition at line 216 of file pngdec.c.

Referenced by png_decode_idat().

static void png_put_interlaced_row	(	uint8_t *	dst,
		int	width,
		int	bits_per_pixel,
		int	pass,
		int	color_type,
		const uint8_t *	src
	)			[static]

Definition at line 77 of file pngdec.c.

Referenced by png_handle_row().

---

Variable Documentation

AVCodec png_decoder

Initial value:

 {
    "png",
    CODEC_TYPE_VIDEO,
    CODEC_ID_PNG,
    sizeof(PNGDecContext),
    png_dec_init,
    NULL,
    NULL, 
    decode_frame,
    0  ,
    NULL
}

Definition at line 541 of file pngdec.c.

const uint8_t png_pass_dsp_mask[NB_PASSES] [static]

Initial value:

 {
    0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff
}

Definition at line 70 of file pngdec.c.

Referenced by png_put_interlaced_row().

const uint8_t png_pass_dsp_ymask[NB_PASSES] [static]

Initial value:

 {
    0xff, 0xff, 0x0f, 0xcc, 0x33, 0xff, 0x55,
}

Definition at line 65 of file pngdec.c.

Referenced by png_handle_row().