hvirtual/quicktime/ffmpeg/libavcodec/dvbsubdec.c File Reference

#include "avcodec.h"
#include "dsputil.h"
#include "bitstream.h"

Include dependency graph for dvbsubdec.c:

Go to the source code of this file.

Data Structures

struct  DVBSubCLUT
struct  DVBSubObjectDisplay
struct  DVBSubObject
struct  DVBSubRegionDisplay
struct  DVBSubRegion
struct  DVBSubContext
struct  DVBSubParseContext

Defines

#define DVBSUB_PAGE_SEGMENT   0x10
#define DVBSUB_REGION_SEGMENT   0x11
#define DVBSUB_CLUT_SEGMENT   0x12
#define DVBSUB_OBJECT_SEGMENT   0x13
#define DVBSUB_DISPLAY_SEGMENT   0x80
#define RGBA(r, g, b, a)   (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))
#define SCALEBITS   10
#define ONE_HALF   (1 << (SCALEBITS - 1))
#define FIX(x)   ((int) ((x) * (1<<SCALEBITS) + 0.5))
#define YUV_TO_RGB1_CCIR(cb1, cr1)
#define YUV_TO_RGB2_CCIR(r, g, b, y1)
#define PARSE_BUF_SIZE   (65536)

Functions

static DVBSubObject * get_object (DVBSubContext *ctx, int object_id)
static DVBSubCLUT * get_clut (DVBSubContext *ctx, int clut_id)
static DVBSubRegion * get_region (DVBSubContext *ctx, int region_id)
static void delete_region_display_list (DVBSubContext *ctx, DVBSubRegion *region)
static void delete_state (DVBSubContext *ctx)
static int dvbsub_init_decoder (AVCodecContext *avctx)
static int dvbsub_close_decoder (AVCodecContext *avctx)
static int dvbsub_read_2bit_string (uint8_t *destbuf, int dbuf_len, uint8_t **srcbuf, int buf_size, int non_mod, uint8_t *map_table)
static int dvbsub_read_4bit_string (uint8_t *destbuf, int dbuf_len, uint8_t **srcbuf, int buf_size, int non_mod, uint8_t *map_table)
static int dvbsub_read_8bit_string (uint8_t *destbuf, int dbuf_len, uint8_t **srcbuf, int buf_size, int non_mod, uint8_t *map_table)
static void dvbsub_parse_pixel_data_block (AVCodecContext *avctx, DVBSubObjectDisplay *display, uint8_t *buf, int buf_size, int top_bottom, int non_mod)
static void dvbsub_parse_object_segment (AVCodecContext *avctx, uint8_t *buf, int buf_size)
static void dvbsub_parse_clut_segment (AVCodecContext *avctx, uint8_t *buf, int buf_size)
static void dvbsub_parse_region_segment (AVCodecContext *avctx, uint8_t *buf, int buf_size)
static void dvbsub_parse_page_segment (AVCodecContext *avctx, uint8_t *buf, int buf_size)
static int dvbsub_display_end_segment (AVCodecContext *avctx, uint8_t *buf, int buf_size, AVSubtitle *sub)
static int dvbsub_decode (AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size)
static int dvbsub_parse_init (AVCodecParserContext *s)
static int dvbsub_parse (AVCodecParserContext *s, AVCodecContext *avctx, uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size)
static void dvbsub_parse_close (AVCodecParserContext *s)

Variables

static unsigned char * cm
static DVBSubCLUT default_clut
AVCodec dvbsub_decoder
AVCodecParser dvbsub_parser

Define Documentation

#define DVBSUB_CLUT_SEGMENT   0x12

Definition at line 29 of file dvbsubdec.c.

Referenced by dvbsub_decode().

#define DVBSUB_DISPLAY_SEGMENT   0x80

Definition at line 31 of file dvbsubdec.c.

Referenced by dvbsub_decode().

#define DVBSUB_OBJECT_SEGMENT   0x13

Definition at line 30 of file dvbsubdec.c.

Referenced by dvbsub_decode().

#define DVBSUB_PAGE_SEGMENT   0x10

Definition at line 27 of file dvbsubdec.c.

Referenced by dvbsub_decode().

#define DVBSUB_REGION_SEGMENT   0x11

Definition at line 28 of file dvbsubdec.c.

Referenced by dvbsub_decode().

#define FIX ( x   )     ((int) ((x) * (1<<SCALEBITS) + 0.5))

Definition at line 899 of file dvbsubdec.c.

#define ONE_HALF   (1 << (SCALEBITS - 1))

Definition at line 898 of file dvbsubdec.c.

#define PARSE_BUF_SIZE   (65536)

Definition at line 1467 of file dvbsubdec.c.

Referenced by dvbsub_parse(), and dvbsub_parse_init().

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

Definition at line 151 of file dvbsubdec.c.

Referenced by dvbsub_init_decoder(), and dvbsub_parse_clut_segment().

#define SCALEBITS   10

Definition at line 897 of file dvbsubdec.c.

#define YUV_TO_RGB1_CCIR ( cb1,
cr1   ) 

Value:

{\
    cb = (cb1) - 128;\
    cr = (cr1) - 128;\
    r_add = FIX(1.40200*255.0/224.0) * cr + ONE_HALF;\
    g_add = - FIX(0.34414*255.0/224.0) * cb - FIX(0.71414*255.0/224.0) * cr + \
            ONE_HALF;\
    b_add = FIX(1.77200*255.0/224.0) * cb + ONE_HALF;\
}

Definition at line 901 of file dvbsubdec.c.

Referenced by dvbsub_parse_clut_segment().

#define YUV_TO_RGB2_CCIR ( r,
g,
b,
y1   ) 

Value:

{\
    y = ((y1) - 16) * FIX(255.0/219.0);\
    r = cm[(y + r_add) >> SCALEBITS];\
    g = cm[(y + g_add) >> SCALEBITS];\
    b = cm[(y + b_add) >> SCALEBITS];\
}

Definition at line 911 of file dvbsubdec.c.

Referenced by dvbsub_parse_clut_segment().

Function Documentation

static void delete_region_display_list ( DVBSubContext *  ctx,
DVBSubRegion *  region 
) [static]

Definition at line 263 of file dvbsubdec.c.

References av_free(), DVBSubObject::display_list, DVBSubRegion::display_list, get_object(), DVBSubObject::next, NULL, DVBSubObjectDisplay::object_id, DVBSubContext::object_list, DVBSubObjectDisplay::object_list_next, and DVBSubObjectDisplay::region_list_next.

Referenced by delete_state(), and dvbsub_parse_region_segment().

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static void delete_state ( DVBSubContext *  ctx  )  [static]

Definition at line 308 of file dvbsubdec.c.

References av_free(), av_log(), AV_LOG_ERROR, DVBSubContext::clut_list, delete_region_display_list(), DVBSubCLUT::next, DVBSubRegion::next, NULL, DVBSubContext::object_list, DVBSubRegion::pbuf, and DVBSubContext::region_list.

Referenced by dvbsub_close_decoder(), and dvbsub_parse_page_segment().

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static int dvbsub_close_decoder ( AVCodecContext *  avctx  )  [static]

Definition at line 415 of file dvbsubdec.c.

References av_free(), delete_state(), DVBSubContext::display_list, DVBSubRegionDisplay::next, NULL, and AVCodecContext::priv_data.

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

Definition at line 1370 of file dvbsubdec.c.

References DVBSubContext::ancillary_id, av_log(), AV_LOG_INFO, BE_16, DVBSubContext::composition_id, DVBSUB_CLUT_SEGMENT, dvbsub_display_end_segment(), DVBSUB_DISPLAY_SEGMENT, DVBSUB_OBJECT_SEGMENT, DVBSUB_PAGE_SEGMENT, dvbsub_parse_clut_segment(), dvbsub_parse_object_segment(), dvbsub_parse_page_segment(), dvbsub_parse_region_segment(), DVBSUB_REGION_SEGMENT, and AVCodecContext::priv_data.

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static int dvbsub_display_end_segment ( AVCodecContext *  avctx,
uint8_t *  buf,
int  buf_size,
AVSubtitle *  sub 
) [static]

Definition at line 1294 of file dvbsubdec.c.

References av_malloc(), av_mallocz(), DVBSubRegion::buf_size, DVBSubRegion::clut, DVBSubCLUT::clut16, DVBSubCLUT::clut256, DVBSubCLUT::clut4, DVBSubRegion::depth, DVBSubContext::display_list, DVBSubContext::display_list_size, AVSubtitle::end_display_time, AVSubtitle::format, get_clut(), get_region(), DVBSubRegion::height, memcpy, DVBSubRegionDisplay::next, NULL, AVSubtitle::num_rects, DVBSubRegion::pbuf, AVCodecContext::priv_data, AVSubtitle::rects, DVBSubRegionDisplay::region_id, AVSubtitle::start_display_time, DVBSubContext::time_out, DVBSubRegion::width, AVSubtitleRect::x, DVBSubRegionDisplay::x_pos, and DVBSubRegionDisplay::y_pos.

Referenced by dvbsub_decode().

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static int dvbsub_init_decoder ( AVCodecContext *  avctx  )  [static]

Definition at line 340 of file dvbsubdec.c.

References a, DVBSubContext::ancillary_id, b, DVBSubCLUT::clut16, DVBSubCLUT::clut256, DVBSubCLUT::clut4, cm, DVBSubContext::composition_id, cropTbl, DVBSubCLUT::id, MAX_NEG_CROP, DVBSubCLUT::next, NULL, AVCodecContext::priv_data, r, RGBA, and AVCodecContext::sub_id.

static int dvbsub_parse ( AVCodecParserContext *  s,
AVCodecContext *  avctx,
uint8_t **  poutbuf,
int *  poutbuf_size,
const uint8_t *  buf,
int  buf_size 
) [static]

Definition at line 1486 of file dvbsubdec.c.

References av_log(), AV_LOG_ERROR, AV_LOG_INFO, AV_NOPTS_VALUE, BE_16, AVCodecParserContext::cur_frame_pts, AVCodecParserContext::cur_frame_start_index, AVCodecParserContext::fetch_timestamp, DVBSubParseContext::in_packet, AVCodecParserContext::last_pts, memcpy, NULL, DVBSubParseContext::packet_buf, DVBSubParseContext::packet_index, DVBSubParseContext::packet_start, PARSE_BUF_SIZE, AVCodecParserContext::priv_data, and AVCodecParserContext::pts.

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static void dvbsub_parse_close ( AVCodecParserContext *  s  )  [static]

Definition at line 1621 of file dvbsubdec.c.

References av_freep(), DVBSubParseContext::packet_buf, and AVCodecParserContext::priv_data.

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static void dvbsub_parse_clut_segment ( AVCodecContext *  avctx,
uint8_t *  buf,
int  buf_size 
) [static]

Definition at line 920 of file dvbsubdec.c.

References av_log(), AV_LOG_ERROR, AV_LOG_INFO, av_malloc(), b, cb, DVBSubContext::clut_list, get_clut(), memcpy, NULL, AVCodecContext::priv_data, r, RGBA, YUV_TO_RGB1_CCIR, and YUV_TO_RGB2_CCIR.

Referenced by dvbsub_decode().

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static int dvbsub_parse_init ( AVCodecParserContext *  s  )  [static]

Definition at line 1478 of file dvbsubdec.c.

References av_malloc(), DVBSubParseContext::packet_buf, PARSE_BUF_SIZE, and AVCodecParserContext::priv_data.

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static void dvbsub_parse_object_segment ( AVCodecContext *  avctx,
uint8_t *  buf,
int  buf_size 
) [static]

Definition at line 838 of file dvbsubdec.c.

References av_log(), AV_LOG_ERROR, BE_16, dvbsub_parse_pixel_data_block(), get_object(), and AVCodecContext::priv_data.

Referenced by dvbsub_decode().

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static void dvbsub_parse_page_segment ( AVCodecContext *  avctx,
uint8_t *  buf,
int  buf_size 
) [static]

Definition at line 1125 of file dvbsubdec.c.

References av_free(), av_log(), AV_LOG_INFO, av_mallocz(), BE_16, delete_state(), DVBSubContext::display_list, DVBSubContext::display_list_size, NULL, AVCodecContext::priv_data, and DVBSubContext::time_out.

Referenced by dvbsub_decode().

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static void dvbsub_parse_pixel_data_block ( AVCodecContext *  avctx,
DVBSubObjectDisplay *  display,
uint8_t *  buf,
int  buf_size,
int  top_bottom,
int  non_mod 
) [static]

Definition at line 718 of file dvbsubdec.c.

References av_log(), AV_LOG_ERROR, AV_LOG_INFO, dvbsub_read_2bit_string(), dvbsub_read_4bit_string(), dvbsub_read_8bit_string(), get_region(), NULL, AVCodecContext::priv_data, DVBSubObjectDisplay::region_id, DVBSubObjectDisplay::x_pos, and DVBSubObjectDisplay::y_pos.

Referenced by dvbsub_parse_object_segment().

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static void dvbsub_parse_region_segment ( AVCodecContext *  avctx,
uint8_t *  buf,
int  buf_size 
) [static]

Definition at line 1012 of file dvbsubdec.c.

References av_free(), av_log(), AV_LOG_INFO, av_malloc(), av_mallocz(), BE_16, delete_region_display_list(), get_object(), get_region(), NULL, DVBSubContext::object_list, AVCodecContext::priv_data, DVBSubContext::region_list, DVBSubObject::type, and DVBSubRegion::width.

Referenced by dvbsub_decode().

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static int dvbsub_read_2bit_string ( uint8_t *  destbuf,
int  dbuf_len,
uint8_t **  srcbuf,
int  buf_size,
int  non_mod,
uint8_t *  map_table 
) [static]

Definition at line 433 of file dvbsubdec.c.

References av_log(), AV_LOG_ERROR, bits, get_bits(), get_bits_count(), init_get_bits(), and NULL.

Referenced by dvbsub_parse_pixel_data_block().

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static int dvbsub_read_4bit_string ( uint8_t *  destbuf,
int  dbuf_len,
uint8_t **  srcbuf,
int  buf_size,
int  non_mod,
uint8_t *  map_table 
) [static]

Definition at line 538 of file dvbsubdec.c.

References av_log(), AV_LOG_ERROR, bits, get_bits(), get_bits_count(), init_get_bits(), and NULL.

Referenced by dvbsub_parse_pixel_data_block().

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static int dvbsub_read_8bit_string ( uint8_t *  destbuf,
int  dbuf_len,
uint8_t **  srcbuf,
int  buf_size,
int  non_mod,
uint8_t *  map_table 
) [static]

Definition at line 659 of file dvbsubdec.c.

References av_log(), AV_LOG_ERROR, bits, and NULL.

Referenced by dvbsub_parse_pixel_data_block().

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static DVBSubCLUT* get_clut ( DVBSubContext *  ctx,
int  clut_id 
) [static]

Definition at line 241 of file dvbsubdec.c.

References DVBSubContext::clut_list, DVBSubCLUT::id, DVBSubCLUT::next, and NULL.

Referenced by dvbsub_display_end_segment(), and dvbsub_parse_clut_segment().

static DVBSubObject* get_object ( DVBSubContext *  ctx,
int  object_id 
) [static]

Definition at line 230 of file dvbsubdec.c.

References DVBSubObject::id, DVBSubObject::next, NULL, and DVBSubContext::object_list.

Referenced by delete_region_display_list(), dvbsub_parse_object_segment(), and dvbsub_parse_region_segment().

static DVBSubRegion* get_region ( DVBSubContext *  ctx,
int  region_id 
) [static]

Definition at line 252 of file dvbsubdec.c.

References DVBSubRegion::id, DVBSubRegion::next, NULL, and DVBSubContext::region_list.

Referenced by dvbsub_display_end_segment(), dvbsub_parse_pixel_data_block(), and dvbsub_parse_region_segment().

Variable Documentation

unsigned char* cm [static]

Definition at line 33 of file dvbsubdec.c.

Referenced by add_pixels_clamped2_c(), add_pixels_clamped4_c(), add_pixels_clamped_c(), deinterlace_line(), deinterlace_line_inplace(), dvbsub_init_decoder(), ff_h264_idct8_add_c(), ff_idct_put_mlib(), ff_jref_idct1_add(), ff_jref_idct1_put(), h_block_filter(), idct(), idct4col(), idct4col_add(), idct_add(), idct_internal(), idct_put(), idctSparseColAdd(), idctSparseColPut(), img_convert_init(), parse_tiff_ifd(), pred16x16_plane_compat_c(), pred8x8_plane_c(), put_pixels_clamped2_c(), put_pixels_clamped4_c(), put_pixels_clamped_c(), step_two(), svq3_add_idct_c(), v_block_filter(), wmv2_mspel8_h_lowpass(), and wmv2_mspel8_v_lowpass().

DVBSubCLUT default_clut [static]

Definition at line 163 of file dvbsubdec.c.

AVCodec dvbsub_decoder

Initial value:

 {
    "dvbsub",
    CODEC_TYPE_SUBTITLE,
    CODEC_ID_DVB_SUBTITLE,
    sizeof(DVBSubContext),
    dvbsub_init_decoder,
    NULL,
    dvbsub_close_decoder,
    dvbsub_decode,
}

Definition at line 1454 of file dvbsubdec.c.

Referenced by avcodec_register_all().

AVCodecParser dvbsub_parser

Initial value:

 {
    { CODEC_ID_DVB_SUBTITLE },
    sizeof(DVBSubParseContext),
    dvbsub_parse_init,
    dvbsub_parse,
    dvbsub_parse_close,
}

Definition at line 1627 of file dvbsubdec.c.

Referenced by avcodec_register_all().

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