FFmpeg
Data Structures | Macros | Functions | Variables
xpmdec.c File Reference
#include "libavutil/avstring.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "decode.h"

Go to the source code of this file.

Data Structures

struct  XPMContext
 
struct  ColorEntry
 

Macros

#define MIN_ELEMENT   ' '
 
#define MAX_ELEMENT   0xfe
 
#define NB_ELEMENTS   (MAX_ELEMENT - MIN_ELEMENT + 1)
 
#define TIMES256(idx)   TIMES64(4 * (idx)) TIMES64(4 * (idx) + 1) TIMES64(4 * (idx) + 2) TIMES64(4 * (idx) + 3)
 
#define TIMES64(idx)   TIMES16(4 * (idx)) TIMES16(4 * (idx) + 1) TIMES16(4 * (idx) + 2) TIMES16(4 * (idx) + 3)
 
#define TIMES16(idx)   TIMES4(4 * (idx)) TIMES4(4 * (idx) + 1) TIMES4(4 * (idx) + 2) TIMES4(4 * (idx) + 3)
 
#define TIMES4(idx)   ENTRY(4 * (idx)) ENTRY(4 * (idx) + 1) ENTRY(4 * (idx) + 2) ENTRY(4 * (idx) + 3)
 
#define ENTRY(x)
 

Functions

static int color_table_compare (const void *lhs, const void *rhs)
 
static unsigned hex_char_to_number (uint8_t x)
 
static size_t mod_strcspn (const char *string, const char *reject)
 
static uint32_t color_string_to_rgba (const char *p, size_t len)
 
static int ascii2index (const uint8_t *cpixel, int cpp)
 
static int xpm_decode_frame (AVCodecContext *avctx, AVFrame *p, int *got_frame, AVPacket *avpkt)
 
static av_cold int xpm_decode_close (AVCodecContext *avctx)
 

Variables

static const ColorEntry color_table []
 
const FFCodec ff_xpm_decoder
 

Macro Definition Documentation

◆ MIN_ELEMENT

#define MIN_ELEMENT   ' '

Definition at line 29 of file xpmdec.c.

◆ MAX_ELEMENT

#define MAX_ELEMENT   0xfe

Definition at line 30 of file xpmdec.c.

◆ NB_ELEMENTS

#define NB_ELEMENTS   (MAX_ELEMENT - MIN_ELEMENT + 1)

Definition at line 31 of file xpmdec.c.

◆ TIMES256

#define TIMES256 (   idx)    TIMES64(4 * (idx)) TIMES64(4 * (idx) + 1) TIMES64(4 * (idx) + 2) TIMES64(4 * (idx) + 3)

◆ TIMES64

#define TIMES64 (   idx)    TIMES16(4 * (idx)) TIMES16(4 * (idx) + 1) TIMES16(4 * (idx) + 2) TIMES16(4 * (idx) + 3)

◆ TIMES16

#define TIMES16 (   idx)    TIMES4(4 * (idx)) TIMES4(4 * (idx) + 1) TIMES4(4 * (idx) + 2) TIMES4(4 * (idx) + 3)

◆ TIMES4

#define TIMES4 (   idx)    ENTRY(4 * (idx)) ENTRY(4 * (idx) + 1) ENTRY(4 * (idx) + 2) ENTRY(4 * (idx) + 3)

◆ ENTRY

#define ENTRY (   x)
Value:
[x] = ((x) >= 'a' && (x) <= 'f') ? (x) - ('a' - 10) : \
((x) >= 'A' && (x) <= 'F') ? (x) - ('A' - 10) : \
((x) >= '0' && (x) <= '9') ? (x) - '0' : 0,

Function Documentation

◆ color_table_compare()

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

Definition at line 45 of file xpmdec.c.

Referenced by color_string_to_rgba().

◆ hex_char_to_number()

static unsigned hex_char_to_number ( uint8_t  x)
static

Definition at line 194 of file xpmdec.c.

Referenced by color_string_to_rgba().

◆ mod_strcspn()

static size_t mod_strcspn ( const char *  string,
const char *  reject 
)
static

Definition at line 217 of file xpmdec.c.

Referenced by xpm_decode_frame().

◆ color_string_to_rgba()

static uint32_t color_string_to_rgba ( const char *  p,
size_t  len 
)
static

Definition at line 243 of file xpmdec.c.

Referenced by xpm_decode_frame().

◆ ascii2index()

static int ascii2index ( const uint8_t *  cpixel,
int  cpp 
)
static

Definition at line 297 of file xpmdec.c.

Referenced by xpm_decode_frame().

◆ xpm_decode_frame()

static int xpm_decode_frame ( AVCodecContext avctx,
AVFrame p,
int got_frame,
AVPacket avpkt 
)
static

Definition at line 311 of file xpmdec.c.

◆ xpm_decode_close()

static av_cold int xpm_decode_close ( AVCodecContext avctx)
static

Definition at line 439 of file xpmdec.c.

Variable Documentation

◆ color_table

const ColorEntry color_table[]
static

◆ ff_xpm_decoder

const FFCodec ff_xpm_decoder
Initial value:
= {
.p.name = "xpm",
CODEC_LONG_NAME("XPM (X PixMap) image"),
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_XPM,
.p.capabilities = AV_CODEC_CAP_DR1,
.priv_data_size = sizeof(XPMDecContext),
.close = xpm_decode_close,
}

Definition at line 450 of file xpmdec.c.

xpm_decode_close
static av_cold int xpm_decode_close(AVCodecContext *avctx)
Definition: xpmdec.c:439
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:287
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:272
xpm_decode_frame
static int xpm_decode_frame(AVCodecContext *avctx, AVFrame *p, int *got_frame, AVPacket *avpkt)
Definition: xpmdec.c:311
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM
#define FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM
The decoder extracts and fills its parameters even if the frame is skipped due to the skip_frame sett...
Definition: codec_internal.h:54
AV_CODEC_ID_XPM
@ AV_CODEC_ID_XPM
Definition: codec_id.h:279
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201