30 #define DVBSUB_PAGE_SEGMENT 0x10
31 #define DVBSUB_REGION_SEGMENT 0x11
32 #define DVBSUB_CLUT_SEGMENT 0x12
33 #define DVBSUB_OBJECT_SEGMENT 0x13
34 #define DVBSUB_DISPLAYDEFINITION_SEGMENT 0x14
35 #define DVBSUB_DISPLAY_SEGMENT 0x80
37 #define cm (ff_crop_tab + MAX_NEG_CROP)
41 static void png_save(
const char *filename,
uint8_t *bitmap,
int w,
int h,
42 uint32_t *rgba_palette)
46 char fname[40], fname2[40];
49 snprintf(fname, 40,
"%s.ppm", filename);
51 f = fopen(fname,
"w");
60 for(y = 0; y <
h; y++) {
61 for(x = 0; x < w; x++) {
62 v = rgba_palette[bitmap[y * w + x]];
63 putc((v >> 16) & 0xff, f);
64 putc((v >> 8) & 0xff, f);
65 putc((v >> 0) & 0xff, f);
71 snprintf(fname2, 40,
"%s-a.pgm", filename);
73 f = fopen(fname2,
"w");
82 for(y = 0; y <
h; y++) {
83 for(x = 0; x < w; x++) {
84 v = rgba_palette[bitmap[y * w + x]];
85 putc((v >> 24) & 0xff, f);
90 snprintf(command, 1024,
"pnmtopng -alpha %s %s > %s.png 2> /dev/null", fname2, fname, filename);
93 snprintf(command, 1024,
"rm %s %s", fname, fname2);
98 static void png_save2(
const char *filename, uint32_t *bitmap,
int w,
int h)
102 char fname[40], fname2[40];
105 snprintf(fname,
sizeof(fname),
"%s.ppm", filename);
107 f = fopen(fname,
"w");
116 for(y = 0; y <
h; y++) {
117 for(x = 0; x < w; x++) {
118 v = bitmap[y * w + x];
119 putc((v >> 16) & 0xff, f);
120 putc((v >> 8) & 0xff, f);
121 putc((v >> 0) & 0xff, f);
127 snprintf(fname2,
sizeof(fname2),
"%s-a.pgm", filename);
129 f = fopen(fname2,
"w");
138 for(y = 0; y <
h; y++) {
139 for(x = 0; x < w; x++) {
140 v = bitmap[y * w + x];
141 putc((v >> 24) & 0xff, f);
146 snprintf(command,
sizeof(command),
"pnmtopng -alpha %s %s > %s.png 2> /dev/null", fname2, fname, filename);
149 snprintf(command,
sizeof(command),
"rm %s %s", fname, fname2);
154 #define RGBA(r,g,b,a) (((unsigned)(a) << 24) | ((r) << 16) | ((g) << 8) | (b))
257 while (ptr && ptr->
id != object_id) {
268 while (ptr && ptr->
id != clut_id) {
279 while (ptr && ptr->
id != region_id) {
297 obj_disp_ptr = &
object->display_list;
298 obj_disp = *obj_disp_ptr;
300 while (obj_disp && obj_disp != display) {
302 obj_disp = *obj_disp_ptr;
312 while (obj2 !=
object) {
314 obj2_ptr = &obj2->
next;
318 *obj2_ptr = obj2->
next;
370 int i,
r,
g,
b,
a = 0;
394 default_clut.
id = -1;
397 default_clut.
clut4[0] =
RGBA( 0, 0, 0, 0);
398 default_clut.
clut4[1] =
RGBA(255, 255, 255, 255);
399 default_clut.
clut4[2] =
RGBA( 0, 0, 0, 255);
400 default_clut.
clut4[3] =
RGBA(127, 127, 127, 255);
403 for (i = 1; i < 16; i++) {
405 r = (i & 1) ? 255 : 0;
406 g = (i & 2) ? 255 : 0;
407 b = (i & 4) ? 255 : 0;
409 r = (i & 1) ? 127 : 0;
410 g = (i & 2) ? 127 : 0;
411 b = (i & 4) ? 127 : 0;
417 for (i = 1; i < 256; i++) {
419 r = (i & 1) ? 255 : 0;
420 g = (i & 2) ? 255 : 0;
421 b = (i & 4) ? 255 : 0;
426 r = ((i & 1) ? 85 : 0) + ((i & 0x10) ? 170 : 0);
427 g = ((i & 2) ? 85 : 0) + ((i & 0x20) ? 170 : 0);
428 b = ((i & 4) ? 85 : 0) + ((i & 0x40) ? 170 : 0);
432 r = ((i & 1) ? 85 : 0) + ((i & 0x10) ? 170 : 0);
433 g = ((i & 2) ? 85 : 0) + ((i & 0x20) ? 170 : 0);
434 b = ((i & 4) ? 85 : 0) + ((i & 0x40) ? 170 : 0);
438 r = 127 + ((i & 1) ? 43 : 0) + ((i & 0x10) ? 85 : 0);
439 g = 127 + ((i & 2) ? 43 : 0) + ((i & 0x20) ? 85 : 0);
440 b = 127 + ((i & 4) ? 43 : 0) + ((i & 0x40) ? 85 : 0);
444 r = ((i & 1) ? 43 : 0) + ((i & 0x10) ? 85 : 0);
445 g = ((i & 2) ? 43 : 0) + ((i & 0x20) ? 85 : 0);
446 b = ((i & 4) ? 43 : 0) + ((i & 0x40) ? 85 : 0);
481 uint8_t *destbuf,
int dbuf_len,
482 const uint8_t **srcbuf,
int buf_size,
483 int non_mod,
uint8_t *map_table,
int x_pos)
489 int pixels_read = x_pos;
495 while (
get_bits_count(&gb) < buf_size << 3 && pixels_read < dbuf_len) {
499 if (non_mod != 1 || bits != 1) {
501 *destbuf++ = map_table[
bits];
512 if (non_mod == 1 && bits == 1)
513 pixels_read += run_length;
516 bits = map_table[
bits];
517 while (run_length-- > 0 && pixels_read < dbuf_len) {
530 if (non_mod == 1 && bits == 1)
531 pixels_read += run_length;
534 bits = map_table[
bits];
535 while (run_length-- > 0 && pixels_read < dbuf_len) {
540 }
else if (bits == 3) {
544 if (non_mod == 1 && bits == 1)
545 pixels_read += run_length;
548 bits = map_table[
bits];
549 while (run_length-- > 0 && pixels_read < dbuf_len) {
554 }
else if (bits == 1) {
560 while (run_length-- > 0 && pixels_read < dbuf_len) {
589 const uint8_t **srcbuf,
int buf_size,
590 int non_mod,
uint8_t *map_table,
int x_pos)
596 int pixels_read = x_pos;
602 while (
get_bits_count(&gb) < buf_size << 3 && pixels_read < dbuf_len) {
606 if (non_mod != 1 || bits != 1) {
608 *destbuf++ = map_table[
bits];
618 if (run_length == 0) {
630 while (run_length-- > 0 && pixels_read < dbuf_len) {
640 if (non_mod == 1 && bits == 1)
641 pixels_read += run_length;
644 bits = map_table[
bits];
645 while (run_length-- > 0 && pixels_read < dbuf_len) {
656 if (non_mod == 1 && bits == 1)
657 pixels_read += run_length;
660 bits = map_table[
bits];
661 while (run_length-- > 0 && pixels_read < dbuf_len) {
666 }
else if (bits == 3) {
670 if (non_mod == 1 && bits == 1)
671 pixels_read += run_length;
674 bits = map_table[
bits];
675 while (run_length-- > 0 && pixels_read < dbuf_len) {
680 }
else if (bits == 1) {
686 while (run_length-- > 0 && pixels_read < dbuf_len) {
712 uint8_t *destbuf,
int dbuf_len,
713 const uint8_t **srcbuf,
int buf_size,
714 int non_mod,
uint8_t *map_table,
int x_pos)
716 const uint8_t *sbuf_end = (*srcbuf) + buf_size;
719 int pixels_read = x_pos;
723 while (*srcbuf < sbuf_end && pixels_read < dbuf_len) {
727 if (non_mod != 1 || bits != 1) {
729 *destbuf++ = map_table[
bits];
736 run_length = bits & 0x7f;
737 if ((bits & 0x80) == 0) {
738 if (run_length == 0) {
746 if (non_mod == 1 && bits == 1)
747 pixels_read += run_length;
750 bits = map_table[
bits];
751 while (run_length-- > 0 && pixels_read < dbuf_len) {
769 int counttab[256] = {0};
772 #define V(x,y) frame->data[0][(x) + (y)*frame->linesize[0]]
773 for (y = 0; y<
h; y++) {
774 for (x = 0; x<w; x++) {
776 int vl = x ?
V(x-1,y) + 1 : 0;
777 int vr = x+1<w ?
V(x+1,y) + 1 : 0;
778 int vt = y ?
V(x,y-1) + 1 : 0;
779 int vb = y+1<h ?
V(x,y+1) + 1 : 0;
780 counttab[v-1] += !!((v!=vl) + (v!=vr) + (v!=vt) + (v!=vb));
783 #define L(x,y) list[ frame->data[0][(x) + (y)*frame->linesize[0]] ]
785 for (i = 0; i<256; i++) {
786 int scoretab[256] = {0};
789 for (y = 0; y<
h; y++) {
790 for (x = 0; x<w; x++) {
793 int l_l = x ?
L(x-1, y) : 1;
794 int l_r = x+1<w ?
L(x+1, y) : 1;
795 int l_t = y ?
L(x, y-1) : 1;
796 int l_b = y+1<h ?
L(x, y+1) : 1;
800 scoretab[
v] += l_l + l_r + l_t + l_b;
801 score = 1024LL*scoretab[
v] / counttab[
v];
802 if (score > bestscore) {
811 list_inv[ i ] = bestv;
814 count =
FFMAX(i - 1, 1);
815 for (i--; i>=0; i--) {
830 uint32_t *clut_table;
832 int offset_x=0, offset_y=0;
837 offset_x = display_def->
x;
838 offset_y = display_def->
y;
848 if (region && region->
dirty)
881 rect = sub->
rects[i];
882 rect->
x = display->
x_pos + offset_x;
883 rect->
y = display->
y_pos + offset_y;
895 switch (region->
depth) {
897 clut_table = clut->
clut4;
904 clut_table = clut->
clut16;
913 memcpy(rect->
pict.
data[1], clut_table, (1 << region->
depth) *
sizeof(uint32_t));
934 rect = sub->
rects[i];
948 const uint8_t *
buf,
int buf_size,
int top_bottom,
int non_mod)
953 const uint8_t *buf_end = buf + buf_size;
958 uint8_t map2to4[] = { 0x0, 0x7, 0x8, 0xf};
959 uint8_t map2to8[] = {0x00, 0x77, 0x88, 0xff};
960 uint8_t map4to8[] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
961 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff};
965 ff_dlog(avctx,
"DVB pixel block size %d, %s field:\n", buf_size,
966 top_bottom ?
"bottom" :
"top");
968 for (i = 0; i < buf_size; i++) {
970 ff_dlog(avctx,
"0x%8p: ", buf+i);
972 ff_dlog(avctx,
"%02x ", buf[i]);
987 x_pos = display->
x_pos;
988 y_pos = display->
y_pos;
992 while (buf < buf_end) {
993 if ((*buf!=0xf0 && x_pos >= region->
width) || y_pos >= region->
height) {
1000 if (region->
depth == 8)
1001 map_table = map2to8;
1002 else if (region->
depth == 4)
1003 map_table = map2to4;
1008 region->
width, &buf, buf_end - buf,
1009 non_mod, map_table, x_pos);
1012 if (region->
depth < 4) {
1017 if (region->
depth == 8)
1018 map_table = map4to8;
1023 region->
width, &buf, buf_end - buf,
1024 non_mod, map_table, x_pos);
1027 if (region->
depth < 8) {
1033 region->
width, &buf, buf_end - buf,
1034 non_mod,
NULL, x_pos);
1038 map2to4[0] = (*buf) >> 4;
1039 map2to4[1] = (*buf++) & 0xf;
1040 map2to4[2] = (*buf) >> 4;
1041 map2to4[3] = (*buf++) & 0xf;
1044 for (i = 0; i < 4; i++)
1045 map2to8[i] = *buf++;
1048 for (i = 0; i < 16; i++)
1049 map4to8[i] = *buf++;
1053 x_pos = display->
x_pos;
1068 const uint8_t *buf_end = buf + buf_size;
1072 int top_field_len, bottom_field_len;
1074 int coding_method, non_modifying_color;
1084 coding_method = ((*buf) >> 2) & 3;
1085 non_modifying_color = ((*buf++) >> 1) & 1;
1087 if (coding_method == 0) {
1090 bottom_field_len =
AV_RB16(buf);
1093 if (buf + top_field_len + bottom_field_len > buf_end) {
1094 av_log(avctx,
AV_LOG_ERROR,
"Field data size %d+%d too large\n", top_field_len, bottom_field_len);
1100 int bfl = bottom_field_len;
1103 non_modifying_color);
1105 if (bottom_field_len > 0)
1106 block = buf + top_field_len;
1108 bfl = top_field_len;
1111 non_modifying_color);
1128 const uint8_t *buf_end = buf + buf_size;
1132 int entry_id,
depth , full_range;
1134 int r,
g,
b, r_add, g_add, b_add;
1136 ff_dlog(avctx,
"DVB clut packet:\n");
1138 for (i=0; i < buf_size; i++) {
1139 ff_dlog(avctx,
"%02x ", buf[i]);
1148 version = ((*buf)>>4)&15;
1158 memcpy(clut, &default_clut,
sizeof(
DVBSubCLUT));
1167 if (clut->
version != version) {
1171 while (buf + 4 < buf_end) {
1174 depth = (*buf) & 0xe0;
1180 full_range = (*buf++) & 1;
1189 cr = (((buf[0] & 3) << 2) | ((buf[1] >> 6) & 3)) << 4;
1190 cb = (buf[1] << 2) & 0xf0;
1191 alpha = (buf[1] << 6) & 0xc0;
1202 ff_dlog(avctx,
"clut %d := (%d,%d,%d,%d)\n", entry_id, r, g, b, alpha);
1203 if (!!(depth & 0x80) + !!(depth & 0x40) + !!(depth & 0x20) > 1) {
1204 ff_dlog(avctx,
"More than one bit level marked: %x\n", depth);
1209 if (depth & 0x80 && entry_id < 4)
1210 clut->
clut4[entry_id] =
RGBA(r,g,b,255 - alpha);
1211 else if (depth & 0x40 && entry_id < 16)
1212 clut->
clut16[entry_id] =
RGBA(r,g,b,255 - alpha);
1213 else if (depth & 0x20)
1214 clut->
clut256[entry_id] =
RGBA(r,g,b,255 - alpha);
1227 const uint8_t *buf_end = buf + buf_size;
1228 int region_id, object_id;
1248 region->
id = region_id;
1255 version = ((*buf)>>4) & 15;
1256 fill = ((*buf++) >> 3) & 1;
1275 if (!region->
pbuf) {
1286 region->
depth = 1 << (((*buf++) >> 2) & 7);
1291 region->
clut = *buf++;
1293 if (region->
depth == 8) {
1299 if (region->
depth == 4)
1300 region->
bgcolor = (((*buf++) >> 4) & 15);
1302 region->
bgcolor = (((*buf++) >> 2) & 3);
1314 while (buf + 5 < buf_end) {
1325 object->id = object_id;
1330 object->
type = (*buf) >> 6;
1351 if ((object->
type == 1 || object->
type == 2) && buf+1 < buf_end) {
1360 object->display_list = display;
1373 const uint8_t *buf_end = buf + buf_size;
1383 version = ((*buf)>>4) & 15;
1384 page_state = ((*buf++) >> 2) & 3;
1386 if (ctx->
version == version) {
1393 ff_dlog(avctx,
"Page time out %ds, state %d\n", ctx->
time_out, page_state);
1398 if (page_state == 1 || page_state == 2) {
1407 while (buf + 5 < buf_end) {
1411 display = tmp_display_list;
1412 tmp_ptr = &tmp_display_list;
1414 while (display && display->
region_id != region_id) {
1415 tmp_ptr = &display->
next;
1416 display = display->
next;
1432 *tmp_ptr = display->
next;
1437 ff_dlog(avctx,
"Region %d, (%d,%d)\n", region_id, display->
x_pos, display->
y_pos);
1440 while (tmp_display_list) {
1441 display = tmp_display_list;
1443 tmp_display_list = display->
next;
1458 uint32_t *clut_table;
1460 int x,
y, y_off, x_off;
1463 static int fileno_index = 0;
1477 x_pos = display->
x_pos;
1478 y_pos = display->
y_pos;
1479 width = region->
width;
1482 if (display->
x_pos < x_pos) {
1483 width += (x_pos - display->
x_pos);
1484 x_pos = display->
x_pos;
1487 if (display->
y_pos < y_pos) {
1488 height += (y_pos - display->
y_pos);
1489 y_pos = display->
y_pos;
1492 if (display->
x_pos + region->
width > x_pos + width) {
1493 width = display->
x_pos + region->
width - x_pos;
1496 if (display->
y_pos + region->
height > y_pos + height) {
1514 x_off = display->
x_pos - x_pos;
1515 y_off = display->
y_pos - y_pos;
1522 switch (region->
depth) {
1524 clut_table = clut->
clut4;
1531 clut_table = clut->
clut16;
1535 for (y = 0; y < region->
height; y++) {
1536 for (x = 0; x < region->
width; x++) {
1537 pbuf[((y + y_off) * width) + x_off + x] =
1538 clut_table[region->
pbuf[y * region->
width + x]];
1544 snprintf(filename,
sizeof(filename),
"dvbs.%d", fileno_index);
1546 png_save2(filename, pbuf, width, height);
1561 int dds_version, info_byte;
1566 info_byte = bytestream_get_byte(&buf);
1567 dds_version = info_byte >> 4;
1568 if (display_def && display_def->
version == dds_version)
1572 display_def =
av_mallocz(
sizeof(*display_def));
1578 display_def->
version = dds_version;
1581 display_def->
width = bytestream_get_be16(&buf) + 1;
1582 display_def->
height = bytestream_get_be16(&buf) + 1;
1589 if (info_byte & 1<<3) {
1593 display_def->
x = bytestream_get_be16(&buf);
1594 display_def->
width = bytestream_get_be16(&buf) - display_def->
x + 1;
1595 display_def->
y = bytestream_get_be16(&buf);
1596 display_def->
height = bytestream_get_be16(&buf) - display_def->
y + 1;
1603 int buf_size,
AVSubtitle *sub,
int *got_output)
1610 save_display_set(ctx);
1616 void *
data,
int *data_size,
1620 int buf_size = avpkt->
size;
1629 int got_segment = 0;
1632 ff_dlog(avctx,
"DVB sub packet:\n");
1634 for (i=0; i < buf_size; i++) {
1635 ff_dlog(avctx,
"%02x ", buf[i]);
1643 if (buf_size <= 6 || *buf != 0x0f) {
1644 ff_dlog(avctx,
"incomplete or broken packet");
1649 p_end = buf + buf_size;
1651 while (p_end - p >= 6 && *p == 0x0f) {
1653 segment_type = *p++;
1660 av_log(avctx,
AV_LOG_DEBUG,
"segment_type:%d page_id:%d segment_length:%d\n", segment_type, page_id, segment_length);
1663 if (p_end - p < segment_length) {
1664 ff_dlog(avctx,
"incomplete or broken packet");
1672 switch (segment_type) {
1683 if (ret < 0)
goto end;
1697 if (got_segment == 15 && !got_dds && !avctx->
width && !avctx->
height) {
1705 ff_dlog(avctx,
"Subtitling segment type 0x%x, page id %d, length %d\n",
1706 segment_type, page_id, segment_length);
1713 p += segment_length;
1717 if (got_segment == 15) {
1735 #define DS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_SUBTITLE_PARAM
1738 {
"compute_clut",
"compute clut when not available(-1) or always(1) or never(0)", offsetof(
DVBSubContext, compute_clut),
AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1,
DS},
1758 .priv_class = &dvbsubdec_class,
static DVBSubCLUT * get_clut(DVBSubContext *ctx, int clut_id)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
int linesize[AV_NUM_DATA_POINTERS]
number of bytes per line
static int dvbsub_read_8bit_string(AVCodecContext *avctx, uint8_t *destbuf, int dbuf_len, const uint8_t **srcbuf, int buf_size, int non_mod, uint8_t *map_table, int x_pos)
static void dvbsub_parse_pixel_data_block(AVCodecContext *avctx, DVBSubObjectDisplay *display, const uint8_t *buf, int buf_size, int top_bottom, int non_mod)
int x
top left corner of pict, undefined when pict is not set
static DVBSubRegion * get_region(DVBSubContext *ctx, int region_id)
ptrdiff_t const GLvoid * data
DVBSubRegionDisplay * display_list
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
#define AV_LOG_WARNING
Something somehow does not look correct.
#define LIBAVUTIL_VERSION_INT
#define YUV_TO_RGB1_CCIR(cb1, cr1)
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
static av_cold int init(AVCodecContext *avctx)
#define avpriv_request_sample(...)
int nb_colors
number of colors in pict, undefined when pict is not set
Various defines for YUV<->RGB conversion.
static int dvbsub_parse_page_segment(AVCodecContext *avctx, const uint8_t *buf, int buf_size, AVSubtitle *sub, int *got_output)
int w
width of pict, undefined when pict is not set
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
#define av_assert0(cond)
assert() equivalent, that is always enabled.
static double cb(void *priv, double x, double y)
static int dvbsub_read_4bit_string(AVCodecContext *avctx, uint8_t *destbuf, int dbuf_len, const uint8_t **srcbuf, int buf_size, int non_mod, uint8_t *map_table, int x_pos)
static void delete_cluts(DVBSubContext *ctx)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointers to the image data planes
static av_cold int end(AVCodecContext *avctx)
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
static const AVClass dvbsubdec_class
static int get_bits_count(const GetBitContext *s)
bitstream reader API header.
int h
height of pict, undefined when pict is not set
DVBSubRegion * region_list
static void delete_regions(DVBSubContext *ctx)
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
#define DVBSUB_DISPLAYDEFINITION_SEGMENT
struct DVBSubRegion * next
static double alpha(void *priv, double x, double y)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int y
top left corner of pict, undefined when pict is not set
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
#define FF_COMPLIANCE_NORMAL
static DVBSubCLUT default_clut
static int dvbsub_parse_display_definition_segment(AVCodecContext *avctx, const uint8_t *buf, int buf_size)
const char * name
Name of the codec implementation.
Libavcodec external API header.
uint32_t end_display_time
int64_t pts
Same as packet pts, in AV_TIME_BASE.
struct DVBSubObject * next
AVCodec ff_dvbsub_decoder
#define FF_DEBUG_STARTCODE
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
A bitmap, pict will be set.
AVPicture pict
data+linesize for the bitmap of this subtitle.
DVBSubObjectDisplay * display_list
struct DVBSubObjectDisplay * region_list_next
int width
picture width / height.
static int dvbsub_parse_clut_segment(AVCodecContext *avctx, const uint8_t *buf, int buf_size)
static int save_subtitle_set(AVCodecContext *avctx, AVSubtitle *sub, int *got_output)
DVBSubObjectDisplay * display_list
static void delete_objects(DVBSubContext *ctx)
DVBSubDisplayDefinition * display_definition
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
#define AV_LOG_INFO
Standard information.
#define DVBSUB_CLUT_SEGMENT
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
main external API structure.
static int dvbsub_display_end_segment(AVCodecContext *avctx, const uint8_t *buf, int buf_size, AVSubtitle *sub, int *got_output)
static int command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
void avsubtitle_free(AVSubtitle *sub)
Free all allocated data in the given subtitle struct.
static DVBSubObject * get_object(DVBSubContext *ctx, int object_id)
static unsigned int get_bits1(GetBitContext *s)
BYTE int const BYTE int int int height
static void delete_region_display_list(DVBSubContext *ctx, DVBSubRegion *region)
Describe the class of an AVClass context structure.
#define DVBSUB_DISPLAY_SEGMENT
struct DVBSubRegionDisplay * next
rational number numerator/denominator
#define YUV_TO_RGB2_CCIR(r, g, b, y1)
struct DVBSubObjectDisplay * object_list_next
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
#define DVBSUB_PAGE_SEGMENT
static void compute_default_clut(AVPicture *frame, int w, int h)
static av_cold int dvbsub_init_decoder(AVCodecContext *avctx)
static const AVOption options[]
#define DVBSUB_REGION_SEGMENT
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
common internal api header.
static int dvbsub_decode(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
static int dvbsub_parse_object_segment(AVCodecContext *avctx, const uint8_t *buf, int buf_size)
static void * av_mallocz_array(size_t nmemb, size_t size)
DVBSubObject * object_list
static int dvbsub_read_2bit_string(AVCodecContext *avctx, uint8_t *destbuf, int dbuf_len, const uint8_t **srcbuf, int buf_size, int non_mod, uint8_t *map_table, int x_pos)
static int dvbsub_parse_region_segment(AVCodecContext *avctx, const uint8_t *buf, int buf_size)
#define FFSWAP(type, a, b)
int compute_edt
if 1 end display time calculated using pts if 0 (Default) calculated using time out ...
#define DVBSUB_OBJECT_SEGMENT
static double cr(void *priv, double x, double y)
static av_cold int dvbsub_close_decoder(AVCodecContext *avctx)
This structure stores compressed data.
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
int strict_std_compliance
strictly follow the standard (MPEG4, ...).
#define AV_NOPTS_VALUE
Undefined timestamp value.