libavcore/parseutils.c File Reference

misc parsing utilities for libavcore More...

#include <strings.h>
#include "parseutils.h"
#include "libavutil/avutil.h"
#include "libavutil/eval.h"
#include "libavutil/avstring.h"
#include "libavutil/random_seed.h"

Go to the source code of this file.

Data Structures
struct	VideoSizeAbbr
struct	VideoRateAbbr
struct	ColorEntry
Defines
#define	ALPHA_SEP   '@'
Functions
int	av_parse_video_size (int *width_ptr, int *height_ptr, const char *str)
	Parse str and put in width_ptr and height_ptr the detected values.
int	av_parse_video_rate (AVRational *rate, const char *arg)
	Parse str and store the detected values in *rate.
static int	color_table_compare (const void *lhs, const void *rhs)
int	av_parse_color (uint8_t *rgba_color, const char *color_string, int slen, void *log_ctx)
	Put the RGBA values that correspond to color_string in rgba_color.
Variables
static const VideoSizeAbbr	video_size_abbrs []
static const VideoRateAbbr	video_rate_abbrs []
static ColorEntry	color_table []

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Detailed Description

misc parsing utilities for libavcore

Definition in file parseutils.c.

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Define Documentation

#define ALPHA_SEP   '@'

Definition at line 296 of file parseutils.c.

Referenced by av_parse_color().

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Function Documentation

int av_parse_color	(	uint8_t *	rgba_color,
		const char *	color_string,
		int	slen,
		void *	log_ctx
	)

Put the RGBA values that correspond to color_string in rgba_color.

Parameters:

	color_string	a string specifying a color. It can be the name of a color (case insensitive match) or a [0x|#]RRGGBB[AA] sequence, possibly followed by "@" and a string representing the alpha component. The alpha component may be a string composed by "0x" followed by an hexadecimal number or a decimal number between 0.0 and 1.0, which represents the opacity value (0x00/0.0 means completely transparent, 0xff/1.0 completely opaque). If the alpha component is not specified then 0xff is assumed. The string "random" will result in a random color.
	slen	length of the initial part of color_string containing the color. It can be set to -1 if color_string is a null terminated string containing nothing else than the color.

Returns:

>= 0 in case of success, a negative value in case of failure (for example if color_string cannot be parsed).

Definition at line 298 of file parseutils.c.

Referenced by html_color_parse(), init(), and set_param().

int av_parse_video_rate	(	AVRational *	rate,
		const char *	str
	)

Parse str and store the detected values in *rate.

Parameters:

[in,out]	rate	pointer to the AVRational which will contain the detected frame rate
[in]	str	the string to parse: it has to be a string in the format rate_num / rate_den, a float number or a valid video rate abbreviation

Returns:

>= 0 on success, a negative error code otherwise

Definition at line 120 of file parseutils.c.

Referenced by av_parse_video_frame_rate(), opt_frame_rate(), parse_ffconfig(), parse_frame_rate(), and source_init().

int av_parse_video_size	(	int *	width_ptr,
		int *	height_ptr,
		const char *	str
	)

Parse str and put in width_ptr and height_ptr the detected values.

Parameters:

[in,out]	width_ptr	pointer to the variable which will contain the detected width value
[in,out]	height_ptr	pointer to the variable which will contain the detected height value
[in]	str	the string to parse: it has to be a string in the format width x height or a valid video size abbreviation.

Returns:

>= 0 on success, a negative error code otherwise

Definition at line 92 of file parseutils.c.

Referenced by av_parse_video_frame_size(), opt_frame_size(), parse_ffconfig(), parse_image_size(), and source_init().

static int color_table_compare	(	const void *	lhs,
		const void *	rhs
	)			[static]

Definition at line 291 of file parseutils.c.

Referenced by av_parse_color().

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Variable Documentation

ColorEntry color_table[] [static]

Definition at line 148 of file parseutils.c.

Referenced by ff_mov_read_stsd_entries(), and seq_decode_op1().

const VideoRateAbbr video_rate_abbrs[] [static]

Initial value:

 {
    { "ntsc",      { 30000, 1001 } },
    { "pal",       {    25,    1 } },
    { "qntsc",     { 30000, 1001 } }, 
    { "qpal",      {    25,    1 } }, 
    { "sntsc",     { 30000, 1001 } }, 
    { "spal",      {    25,    1 } }, 
    { "film",      {    24,    1 } },
    { "ntsc-film", { 24000, 1001 } },
}

Definition at line 81 of file parseutils.c.

const VideoSizeAbbr video_size_abbrs[] [static]

Definition at line 41 of file parseutils.c.