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Data Structures | Macros | Functions | Variables
libzvbi-teletextdec.c File Reference
#include "avcodec.h"
#include "libavcodec/ass.h"
#include "libavcodec/dvbtxt.h"
#include "libavutil/opt.h"
#include "libavutil/bprint.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/log.h"
#include "libavutil/common.h"
#include <libzvbi.h>

Go to the source code of this file.

Data Structures

struct  TeletextPage
 
struct  TeletextContext
 

Macros

#define TEXT_MAXSZ   (25 * (56 + 1) * 4 + 2)
 
#define VBI_NB_COLORS   40
 
#define VBI_TRANSPARENT_BLACK   8
 
#define RGBA(r, g, b, a)   (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))
 
#define VBI_R(rgba)   (((rgba) >> 0) & 0xFF)
 
#define VBI_G(rgba)   (((rgba) >> 8) & 0xFF)
 
#define VBI_B(rgba)   (((rgba) >> 16) & 0xFF)
 
#define VBI_A(rgba)   (((rgba) >> 24) & 0xFF)
 
#define MAX_BUFFERED_PAGES   25
 
#define BITMAP_CHAR_WIDTH   12
 
#define BITMAP_CHAR_HEIGHT   10
 
#define MAX_SLICES   64
 
#define IS_TXT_SPACE(ch)
 
#define OFFSET(x)   offsetof(TeletextContext, x)
 
#define SD   AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_DECODING_PARAM
 

Functions

static int my_ass_subtitle_header (AVCodecContext *avctx)
 
static int chop_spaces_utf8 (const unsigned char *t, int len)
 
static void subtitle_rect_free (AVSubtitleRect **sub_rect)
 
static char * create_ass_text (TeletextContext *ctx, const char *text)
 
static int gen_sub_text (TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_page *page, int chop_top)
 
static void bprint_color (const char *type, AVBPrint *buf, vbi_page *page, unsigned ci)
 
static void get_trim_info (vbi_page *page, vbi_char *row, int *leading, int *trailing, int *olen)
 
static void decode_string (vbi_page *page, vbi_char *row, AVBPrint *buf, int start, int end, vbi_color *cur_color, vbi_color *cur_back_color)
 
static int gen_sub_ass (TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_page *page, int chop_top)
 
static void fix_transparency (TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_page *page, int chop_top, int resx, int resy)
 
static int gen_sub_bitmap (TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_page *page, int chop_top)
 
static void handler (vbi_event *ev, void *user_data)
 
static int slice_to_vbi_lines (TeletextContext *ctx, uint8_t *buf, int size)
 
static int teletext_decode_frame (AVCodecContext *avctx, void *data, int *data_size, AVPacket *pkt)
 
static int teletext_init_decoder (AVCodecContext *avctx)
 
static int teletext_close_decoder (AVCodecContext *avctx)
 
static void teletext_flush (AVCodecContext *avctx)
 

Variables

static const AVOption options []
 
static const AVClass teletext_class
 
AVCodec ff_libzvbi_teletext_decoder
 

Macro Definition Documentation

#define TEXT_MAXSZ   (25 * (56 + 1) * 4 + 2)

Definition at line 33 of file libzvbi-teletextdec.c.

Referenced by gen_sub_text().

#define VBI_NB_COLORS   40

Definition at line 34 of file libzvbi-teletextdec.c.

Referenced by fix_transparency(), and gen_sub_bitmap().

#define VBI_TRANSPARENT_BLACK   8

Definition at line 35 of file libzvbi-teletextdec.c.

Referenced by fix_transparency(), and gen_sub_bitmap().

#define RGBA (   r,
  g,
  b,
  a 
)    (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))

Definition at line 36 of file libzvbi-teletextdec.c.

Referenced by gen_sub_bitmap().

#define VBI_R (   rgba)    (((rgba) >> 0) & 0xFF)

Definition at line 37 of file libzvbi-teletextdec.c.

Referenced by bprint_color(), and gen_sub_bitmap().

#define VBI_G (   rgba)    (((rgba) >> 8) & 0xFF)

Definition at line 38 of file libzvbi-teletextdec.c.

Referenced by bprint_color(), and gen_sub_bitmap().

#define VBI_B (   rgba)    (((rgba) >> 16) & 0xFF)

Definition at line 39 of file libzvbi-teletextdec.c.

Referenced by bprint_color(), and gen_sub_bitmap().

#define VBI_A (   rgba)    (((rgba) >> 24) & 0xFF)

Definition at line 40 of file libzvbi-teletextdec.c.

Referenced by gen_sub_bitmap().

#define MAX_BUFFERED_PAGES   25

Definition at line 41 of file libzvbi-teletextdec.c.

Referenced by handler().

#define BITMAP_CHAR_WIDTH   12

Definition at line 42 of file libzvbi-teletextdec.c.

Referenced by fix_transparency(), gen_sub_bitmap(), and teletext_init_decoder().

#define BITMAP_CHAR_HEIGHT   10

Definition at line 43 of file libzvbi-teletextdec.c.

Referenced by fix_transparency(), gen_sub_bitmap(), and teletext_init_decoder().

#define MAX_SLICES   64

Definition at line 44 of file libzvbi-teletextdec.c.

Referenced by slice_to_vbi_lines().

#define IS_TXT_SPACE (   ch)
Value:
((ch).unicode < 0x0020 || (ch).unicode >= 0xe000 || (ch).unicode == 0x00a0 ||\
(ch).size > VBI_DOUBLE_SIZE || (ch).opacity == VBI_TRANSPARENT_SPACE)
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(constuint8_t *) pi-0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(constint16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(constint32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(constint64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(constfloat *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(constdouble *) pi *(INT64_C(1)<< 63)))#defineFMT_PAIR_FUNC(out, in) staticconv_func_type *constfmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64),};staticvoidcpy1(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, len);}staticvoidcpy2(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 2 *len);}staticvoidcpy4(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 4 *len);}staticvoidcpy8(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 8 *len);}AudioConvert *swri_audio_convert_alloc(enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, constint *ch_map, intflags){AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) returnNULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) returnNULL;if(channels==1){in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);}ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map){switch(av_get_bytes_per_sample(in_fmt)){case1:ctx->simd_f=cpy1;break;case2:ctx->simd_f=cpy2;break;case4:ctx->simd_f=cpy4;break;case8:ctx->simd_f=cpy8;break;}}if(HAVE_X86ASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);returnctx;}voidswri_audio_convert_free(AudioConvert **ctx){av_freep(ctx);}intswri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, intlen){intch;intoff=0;constintos=(out->planar?1:out->ch_count)*out->bps;unsignedmisaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){intplanes=in->planar?in->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;}if(ctx->out_simd_align_mask){intplanes=out->planar?out->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;}if(ctx->simd_f &&!ctx->ch_map &&!misaligned){off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){if(out->planar==in->planar){intplanes=out->planar?out->ch_count:1;for(ch=0;ch< planes;ch++){ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56

Definition at line 240 of file libzvbi-teletextdec.c.

Referenced by decode_string(), and get_trim_info().

#define OFFSET (   x)    offsetof(TeletextContext, x)

Definition at line 791 of file libzvbi-teletextdec.c.

Definition at line 792 of file libzvbi-teletextdec.c.

Function Documentation

static int my_ass_subtitle_header ( AVCodecContext avctx)
static

Definition at line 83 of file libzvbi-teletextdec.c.

Referenced by teletext_init_decoder().

static int chop_spaces_utf8 ( const unsigned char *  t,
int  len 
)
static

Definition at line 129 of file libzvbi-teletextdec.c.

Referenced by gen_sub_text().

static void subtitle_rect_free ( AVSubtitleRect **  sub_rect)
static

Definition at line 140 of file libzvbi-teletextdec.c.

Referenced by teletext_close_decoder(), and teletext_decode_frame().

static char* create_ass_text ( TeletextContext ctx,
const char *  text 
)
static

Definition at line 148 of file libzvbi-teletextdec.c.

Referenced by gen_sub_text().

static int gen_sub_text ( TeletextContext ctx,
AVSubtitleRect sub_rect,
vbi_page *  page,
int  chop_top 
)
static

Definition at line 165 of file libzvbi-teletextdec.c.

Referenced by handler().

static void bprint_color ( const char *  type,
AVBPrint *  buf,
vbi_page *  page,
unsigned  ci 
)
static

Definition at line 232 of file libzvbi-teletextdec.c.

Referenced by decode_string().

static void get_trim_info ( vbi_page *  page,
vbi_char *  row,
int leading,
int trailing,
int olen 
)
static

Definition at line 243 of file libzvbi-teletextdec.c.

Referenced by gen_sub_ass().

static void decode_string ( vbi_page *  page,
vbi_char *  row,
AVBPrint *  buf,
int  start,
int  end,
vbi_color *  cur_color,
vbi_color *  cur_back_color 
)
static

Definition at line 263 of file libzvbi-teletextdec.c.

Referenced by gen_sub_ass().

static int gen_sub_ass ( TeletextContext ctx,
AVSubtitleRect sub_rect,
vbi_page *  page,
int  chop_top 
)
static

Definition at line 293 of file libzvbi-teletextdec.c.

Referenced by handler().

static void fix_transparency ( TeletextContext ctx,
AVSubtitleRect sub_rect,
vbi_page *  page,
int  chop_top,
int  resx,
int  resy 
)
static

Definition at line 410 of file libzvbi-teletextdec.c.

Referenced by gen_sub_bitmap().

static int gen_sub_bitmap ( TeletextContext ctx,
AVSubtitleRect sub_rect,
vbi_page *  page,
int  chop_top 
)
static

Definition at line 449 of file libzvbi-teletextdec.c.

Referenced by handler().

static void handler ( vbi_event *  ev,
void user_data 
)
static
static int slice_to_vbi_lines ( TeletextContext ctx,
uint8_t buf,
int  size 
)
static

Definition at line 582 of file libzvbi-teletextdec.c.

Referenced by teletext_decode_frame().

static int teletext_decode_frame ( AVCodecContext avctx,
void data,
int data_size,
AVPacket pkt 
)
static

Definition at line 638 of file libzvbi-teletextdec.c.

static int teletext_init_decoder ( AVCodecContext avctx)
static

Definition at line 729 of file libzvbi-teletextdec.c.

static int teletext_close_decoder ( AVCodecContext avctx)
static

Definition at line 766 of file libzvbi-teletextdec.c.

Referenced by teletext_flush().

static void teletext_flush ( AVCodecContext avctx)
static

Definition at line 786 of file libzvbi-teletextdec.c.

Variable Documentation

const AVOption options[]
static
Initial value:
= {
{"txt_page", "page numbers to decode, subtitle for subtitles, * for all", OFFSET(pgno), AV_OPT_TYPE_STRING, {.str = "*"}, 0, 0, SD},
{"txt_chop_top", "discards the top teletext line", OFFSET(chop_top), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, SD},
{"txt_format", "format of the subtitles (bitmap or text or ass)", OFFSET(format_id), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 2, SD, "txt_format"},
{"bitmap", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 0}, 0, 0, SD, "txt_format"},
{"text", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1}, 0, 0, SD, "txt_format"},
{"ass", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 2}, 0, 0, SD, "txt_format"},
{"txt_left", "x offset of generated bitmaps", OFFSET(x_offset), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 65535, SD},
{"txt_top", "y offset of generated bitmaps", OFFSET(y_offset), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 65535, SD},
{"txt_chop_spaces", "chops leading and trailing spaces from text", OFFSET(chop_spaces), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, SD},
{"txt_duration", "display duration of teletext pages in msecs", OFFSET(sub_duration), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 86400000, SD},
{"txt_transparent", "force transparent background of the teletext", OFFSET(transparent_bg), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, SD},
{"txt_opacity", "set opacity of the transparent background", OFFSET(opacity), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, SD},
{ NULL },
}
#define NULL
Definition: coverity.c:32
#define OFFSET(x)
#define SD

Definition at line 793 of file libzvbi-teletextdec.c.

const AVClass teletext_class
static
Initial value:
= {
.class_name = "libzvbi_teletextdec",
.item_name = av_default_item_name,
.option = options,
}
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
static const AVOption options[]

Definition at line 809 of file libzvbi-teletextdec.c.

AVCodec ff_libzvbi_teletext_decoder
Initial value:
= {
.name = "libzvbi_teletextdec",
.long_name = NULL_IF_CONFIG_SMALL("Libzvbi DVB teletext decoder"),
.priv_data_size = sizeof(TeletextContext),
.capabilities = AV_CODEC_CAP_DELAY,
.priv_class= &teletext_class,
.wrapper_name = "libzvbi",
}
static void flush(AVCodecContext *avctx)
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: avcodec.h:992
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
static void teletext_flush(AVCodecContext *avctx)
static int teletext_close_decoder(AVCodecContext *avctx)
static int teletext_init_decoder(AVCodecContext *avctx)
static int teletext_decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *pkt)
static const AVClass teletext_class

Definition at line 816 of file libzvbi-teletextdec.c.