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)
39 #define RGBA(r,g,b,a) (((unsigned)(a) << 24) | ((r) << 16) | ((g) << 8) | (b))
146 while (ptr && ptr->
id != object_id) {
157 while (ptr && ptr->
id != clut_id) {
168 while (ptr && ptr->
id != region_id) {
186 obj_disp_ptr = &
object->display_list;
187 obj_disp = *obj_disp_ptr;
189 while (obj_disp && obj_disp != display) {
191 obj_disp = *obj_disp_ptr;
198 obj2_ptr = &
ctx->object_list;
201 while (obj2 !=
object) {
203 obj2_ptr = &obj2->
next;
207 *obj2_ptr = obj2->
next;
223 while (
ctx->clut_list) {
234 while (
ctx->object_list) {
237 ctx->object_list =
object->next;
245 while (
ctx->region_list) {
248 ctx->region_list = region->
next;
259 int i,
r,
g,
b,
a = 0;
262 if (
ctx->substream < 0) {
263 ctx->composition_id = -1;
264 ctx->ancillary_id = -1;
267 ctx->composition_id = -1;
268 ctx->ancillary_id = -1;
292 for (
i = 1;
i < 16;
i++) {
294 r = (
i & 1) ? 255 : 0;
295 g = (
i & 2) ? 255 : 0;
296 b = (
i & 4) ? 255 : 0;
298 r = (
i & 1) ? 127 : 0;
299 g = (
i & 2) ? 127 : 0;
300 b = (
i & 4) ? 127 : 0;
306 for (
i = 1;
i < 256;
i++) {
308 r = (
i & 1) ? 255 : 0;
309 g = (
i & 2) ? 255 : 0;
310 b = (
i & 4) ? 255 : 0;
315 r = ((
i & 1) ? 85 : 0) + ((
i & 0x10) ? 170 : 0);
316 g = ((
i & 2) ? 85 : 0) + ((
i & 0x20) ? 170 : 0);
317 b = ((
i & 4) ? 85 : 0) + ((
i & 0x40) ? 170 : 0);
321 r = ((
i & 1) ? 85 : 0) + ((
i & 0x10) ? 170 : 0);
322 g = ((
i & 2) ? 85 : 0) + ((
i & 0x20) ? 170 : 0);
323 b = ((
i & 4) ? 85 : 0) + ((
i & 0x40) ? 170 : 0);
327 r = 127 + ((
i & 1) ? 43 : 0) + ((
i & 0x10) ? 85 : 0);
328 g = 127 + ((
i & 2) ? 43 : 0) + ((
i & 0x20) ? 85 : 0);
329 b = 127 + ((
i & 4) ? 43 : 0) + ((
i & 0x40) ? 85 : 0);
333 r = ((
i & 1) ? 43 : 0) + ((
i & 0x10) ? 85 : 0);
334 g = ((
i & 2) ? 43 : 0) + ((
i & 0x20) ? 85 : 0);
335 b = ((
i & 4) ? 43 : 0) + ((
i & 0x40) ? 85 : 0);
359 while (
ctx->display_list) {
360 display =
ctx->display_list;
361 ctx->display_list = display->
next;
370 uint8_t *destbuf,
int dbuf_len,
371 const uint8_t **srcbuf,
int buf_size,
372 int non_mod,
uint8_t *map_table,
int x_pos)
378 int pixels_read = x_pos;
384 while (
get_bits_count(&gb) < buf_size << 3 && pixels_read < dbuf_len) {
388 if (non_mod != 1 ||
bits != 1) {
390 *destbuf++ = map_table[
bits];
401 if (non_mod == 1 &&
bits == 1)
402 pixels_read += run_length;
406 while (run_length-- > 0 && pixels_read < dbuf_len) {
419 if (non_mod == 1 &&
bits == 1)
420 pixels_read += run_length;
424 while (run_length-- > 0 && pixels_read < dbuf_len) {
429 }
else if (
bits == 3) {
433 if (non_mod == 1 &&
bits == 1)
434 pixels_read += run_length;
438 while (run_length-- > 0 && pixels_read < dbuf_len) {
443 }
else if (
bits == 1) {
449 while (run_length-- > 0 && pixels_read < dbuf_len) {
478 const uint8_t **srcbuf,
int buf_size,
479 int non_mod,
uint8_t *map_table,
int x_pos)
485 int pixels_read = x_pos;
491 while (
get_bits_count(&gb) < buf_size << 3 && pixels_read < dbuf_len) {
495 if (non_mod != 1 ||
bits != 1) {
497 *destbuf++ = map_table[
bits];
507 if (run_length == 0) {
519 while (run_length-- > 0 && pixels_read < dbuf_len) {
529 if (non_mod == 1 &&
bits == 1)
530 pixels_read += run_length;
534 while (run_length-- > 0 && pixels_read < dbuf_len) {
545 if (non_mod == 1 &&
bits == 1)
546 pixels_read += run_length;
550 while (run_length-- > 0 && pixels_read < dbuf_len) {
555 }
else if (
bits == 3) {
559 if (non_mod == 1 &&
bits == 1)
560 pixels_read += run_length;
564 while (run_length-- > 0 && pixels_read < dbuf_len) {
569 }
else if (
bits == 1) {
575 while (run_length-- > 0 && pixels_read < dbuf_len) {
601 uint8_t *destbuf,
int dbuf_len,
602 const uint8_t **srcbuf,
int buf_size,
603 int non_mod,
uint8_t *map_table,
int x_pos)
605 const uint8_t *sbuf_end = (*srcbuf) + buf_size;
608 int pixels_read = x_pos;
612 while (*srcbuf < sbuf_end && pixels_read < dbuf_len) {
616 if (non_mod != 1 ||
bits != 1) {
618 *destbuf++ = map_table[
bits];
625 run_length =
bits & 0x7f;
626 if ((
bits & 0x80) == 0) {
627 if (run_length == 0) {
635 if (non_mod == 1 &&
bits == 1)
636 pixels_read += run_length;
640 while (run_length-- > 0 && pixels_read < dbuf_len) {
658 int counttab[256] = {0};
659 int (*counttab2)[256] =
ctx->clut_count2;
663 memset(
ctx->clut_count2, 0 ,
sizeof(
ctx->clut_count2));
665 #define V(x,y) rect->data[0][(x) + (y)*stride]
666 for (y = 0; y<
h; y++) {
667 for (x = 0; x<
w; x++) {
669 int vl = x ?
V(x-1,y) + 1 : 0;
670 int vr = x+1<
w ?
V(x+1,y) + 1 : 0;
671 int vt = y ?
V(x,y-1) + 1 : 0;
672 int vb = y+1<
h ?
V(x,y+1) + 1 : 0;
673 counttab[v-1] += !!((v!=vl) + (v!=vr) + (v!=vt) + (v!=vb));
674 counttab2[vl][v-1] ++;
675 counttab2[vr][v-1] ++;
676 counttab2[vt][v-1] ++;
677 counttab2[vb][v-1] ++;
680 #define L(x,y) list[d[(x) + (y)*stride]]
682 for (
i = 0;
i<256;
i++) {
683 counttab2[
i+1][
i] = 0;
685 for (
i = 0;
i<256;
i++) {
689 for (x = 0; x < 256; x++) {
693 scorev += counttab2[0][x];
694 for (y = 0; y < 256; y++) {
695 scorev += list[y] * counttab2[y+1][x];
699 int score = 1024LL*scorev / counttab[x];
700 if (score > bestscore) {
709 list_inv[
i ] = bestv;
713 for (
i--;
i >= 0;
i--) {
714 int v =
i * 255 / count;
728 uint32_t *clut_table;
730 int offset_x=0, offset_y=0;
735 offset_x = display_def->
x;
736 offset_y = display_def->
y;
740 if (
sub->num_rects) {
744 for (display =
ctx->display_list; display; display = display->
next) {
746 if (region && region->
dirty)
750 if (
ctx->compute_edt == 0) {
751 sub->end_display_time =
ctx->time_out * 1000;
757 if (
sub->num_rects > 0) {
765 for (
i = 0;
i <
sub->num_rects;
i++) {
767 if (!
sub->rects[
i]) {
775 for (display =
ctx->display_list; display; display = display->
next) {
798 switch (region->
depth) {
800 clut_table = clut->
clut4;
807 clut_table = clut->
clut16;
812 if (!
rect->data[1]) {
816 memcpy(
rect->data[1], clut_table, (1 << region->
depth) *
sizeof(*clut_table));
819 if (!
rect->data[0]) {
839 for (j = 0; j < 4; j++) {
841 rect->pict.linesize[j] =
rect->linesize[j];
854 for (
i=0;
i <
sub->num_rects;
i++) {
869 const uint8_t *buf,
int buf_size,
int top_bottom,
int non_mod)
874 const uint8_t *buf_end = buf + buf_size;
879 uint8_t map2to4[] = { 0x0, 0x7, 0x8, 0xf};
880 uint8_t map2to8[] = {0x00, 0x77, 0x88, 0xff};
881 uint8_t map4to8[] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
882 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff};
886 ff_dlog(avctx,
"DVB pixel block size %d, %s field:\n", buf_size,
887 top_bottom ?
"bottom" :
"top");
889 for (
i = 0;
i < buf_size;
i++) {
908 x_pos = display->
x_pos;
909 y_pos = display->
y_pos;
913 while (buf < buf_end) {
914 if ((*buf!=0xf0 && x_pos >= region->
width) || y_pos >= region->
height) {
921 if (region->
depth == 8)
923 else if (region->
depth == 4)
929 region->
width, &buf, buf_end - buf,
930 non_mod, map_table, x_pos);
933 if (region->
depth < 4) {
938 if (region->
depth == 8)
944 region->
width, &buf, buf_end - buf,
945 non_mod, map_table, x_pos);
948 if (region->
depth < 8) {
954 region->
width, &buf, buf_end - buf,
955 non_mod,
NULL, x_pos);
959 map2to4[0] = (*buf) >> 4;
960 map2to4[1] = (*buf++) & 0xf;
961 map2to4[2] = (*buf) >> 4;
962 map2to4[3] = (*buf++) & 0xf;
965 for (
i = 0;
i < 4;
i++)
969 for (
i = 0;
i < 16;
i++)
974 x_pos = display->
x_pos;
986 const uint8_t *buf,
int buf_size)
990 const uint8_t *buf_end = buf + buf_size;
994 int top_field_len, bottom_field_len;
996 int coding_method, non_modifying_color;
1006 coding_method = ((*buf) >> 2) & 3;
1007 non_modifying_color = ((*buf++) >> 1) & 1;
1009 if (coding_method == 0) {
1012 bottom_field_len =
AV_RB16(buf);
1015 if (buf + top_field_len + bottom_field_len > buf_end) {
1016 av_log(avctx,
AV_LOG_ERROR,
"Field data size %d+%d too large\n", top_field_len, bottom_field_len);
1022 int bfl = bottom_field_len;
1025 non_modifying_color);
1027 if (bottom_field_len > 0)
1028 block = buf + top_field_len;
1030 bfl = top_field_len;
1033 non_modifying_color);
1035 }
else if (coding_method == 1) {
1038 }
else if (coding_method == 2) {
1050 const uint8_t *buf,
int buf_size)
1054 const uint8_t *buf_end = buf + buf_size;
1060 int r,
g,
b, r_add, g_add, b_add;
1062 ff_dlog(avctx,
"DVB clut packet:\n");
1064 for (
i=0;
i < buf_size;
i++) {
1090 ctx->clut_list = clut;
1097 while (buf + 4 < buf_end) {
1100 depth = (*buf) & 0xe0;
1115 cr = (((buf[0] & 3) << 2) | ((buf[1] >> 6) & 3)) << 4;
1116 cb = (buf[1] << 2) & 0xf0;
1117 alpha = (buf[1] << 6) & 0xc0;
1128 ff_dlog(avctx,
"clut %d := (%d,%d,%d,%d)\n", entry_id,
r,
g,
b,
alpha);
1129 if (!!(depth & 0x80) + !!(depth & 0x40) + !!(depth & 0x20) > 1) {
1130 ff_dlog(avctx,
"More than one bit level marked: %x\n", depth);
1135 if (depth & 0x80 && entry_id < 4)
1137 else if (depth & 0x40 && entry_id < 16)
1139 else if (depth & 0x20)
1149 const uint8_t *buf,
int buf_size)
1153 const uint8_t *buf_end = buf + buf_size;
1154 int region_id, object_id;
1174 region->
id = region_id;
1177 region->
next =
ctx->region_list;
1178 ctx->region_list = region;
1182 fill = ((*buf++) >> 3) & 1;
1190 if (ret >= 0 && region->
width * region->
height * 2 > 320 * 1024 * 8) {
1205 if (!region->
pbuf) {
1216 region->
depth = 1 << (((*buf++) >> 2) & 7);
1217 if (region->
depth < 2 || region->
depth > 8) {
1221 region->
clut = *buf++;
1223 if (region->
depth == 8) {
1229 if (region->
depth == 4)
1230 region->
bgcolor = (((*buf++) >> 4) & 15);
1232 region->
bgcolor = (((*buf++) >> 2) & 3);
1244 while (buf + 5 < buf_end) {
1255 object->id = object_id;
1256 object->next =
ctx->object_list;
1257 ctx->object_list = object;
1260 object->
type = (*buf) >> 6;
1281 if ((object->
type == 1 || object->
type == 2) && buf+1 < buf_end) {
1290 object->display_list = display;
1303 const uint8_t *buf_end = buf + buf_size;
1314 page_state = ((*buf++) >> 2) & 3;
1320 ctx->time_out = timeout;
1323 ff_dlog(avctx,
"Page time out %ds, state %d\n",
ctx->time_out, page_state);
1325 if (
ctx->compute_edt == 1)
1328 if (page_state == 1 || page_state == 2) {
1334 tmp_display_list =
ctx->display_list;
1337 while (buf + 5 < buf_end) {
1341 display =
ctx->display_list;
1342 while (display && display->
region_id != region_id) {
1343 display = display->
next;
1350 display = tmp_display_list;
1351 tmp_ptr = &tmp_display_list;
1353 while (display && display->
region_id != region_id) {
1354 tmp_ptr = &display->
next;
1355 display = display->
next;
1371 *tmp_ptr = display->
next;
1373 display->
next =
ctx->display_list;
1374 ctx->display_list = display;
1376 ff_dlog(avctx,
"Region %d, (%d,%d)\n", region_id, display->
x_pos, display->
y_pos);
1379 while (tmp_display_list) {
1380 display = tmp_display_list;
1382 tmp_display_list = display->
next;
1392 static void png_save(
DVBSubContext *
ctx,
const char *filename, uint32_t *bitmap,
int w,
int h)
1396 char fname[40], fname2[40];
1399 snprintf(fname,
sizeof(fname),
"%s.ppm", filename);
1401 f = fopen(fname,
"w");
1410 for(y = 0; y <
h; y++) {
1411 for(x = 0; x <
w; x++) {
1412 v = bitmap[y *
w + x];
1413 putc((v >> 16) & 0xff,
f);
1414 putc((v >> 8) & 0xff,
f);
1415 putc((v >> 0) & 0xff,
f);
1421 snprintf(fname2,
sizeof(fname2),
"%s-a.pgm", filename);
1423 f = fopen(fname2,
"w");
1432 for(y = 0; y <
h; y++) {
1433 for(x = 0; x <
w; x++) {
1434 v = bitmap[y *
w + x];
1435 putc((v >> 24) & 0xff,
f);
1440 snprintf(
command,
sizeof(
command),
"pnmtopng -alpha %s %s > %s.png 2> /dev/null", fname2, fname, filename);
1458 uint32_t *clut_table;
1460 int x, y, y_off, x_off;
1463 static int fileno_index = 0;
1470 for (display =
ctx->display_list; display; display = display->
next) {
1477 x_pos = display->
x_pos;
1478 y_pos = display->
y_pos;
1482 if (display->
x_pos < x_pos) {
1484 x_pos = display->
x_pos;
1487 if (display->
y_pos < y_pos) {
1489 y_pos = display->
y_pos;
1508 for (display =
ctx->display_list; display; display = display->
next) {
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);
1562 int dds_version, info_byte;
1567 info_byte = bytestream_get_byte(&buf);
1568 dds_version = info_byte >> 4;
1569 if (display_def && display_def->
version == dds_version)
1573 display_def =
av_mallocz(
sizeof(*display_def));
1576 ctx->display_definition = display_def;
1579 display_def->
version = dds_version;
1582 display_def->
width = bytestream_get_be16(&buf) + 1;
1583 display_def->
height = bytestream_get_be16(&buf) + 1;
1590 if (info_byte & 1<<3) {
1594 display_def->
x = bytestream_get_be16(&buf);
1595 display_def->
width = bytestream_get_be16(&buf) - display_def->
x + 1;
1596 display_def->
y = bytestream_get_be16(&buf);
1597 display_def->
height = bytestream_get_be16(&buf) - display_def->
y + 1;
1608 if (
ctx->compute_edt == 0)
1611 save_display_set(
ctx);
1617 void *
data,
int *got_sub_ptr,
1621 int buf_size = avpkt->
size;
1630 int got_segment = 0;
1633 ff_dlog(avctx,
"DVB sub packet:\n");
1635 for (
i=0;
i < buf_size;
i++) {
1644 if (buf_size <= 6 || *buf != 0x0f) {
1645 ff_dlog(avctx,
"incomplete or broken packet");
1650 p_end = buf + buf_size;
1652 while (p_end - p >= 6 && *p == 0x0f) {
1654 segment_type = *p++;
1661 av_log(avctx,
AV_LOG_DEBUG,
"segment_type:%d page_id:%d segment_length:%d\n", segment_type, page_id, segment_length);
1664 if (p_end - p < segment_length) {
1665 ff_dlog(avctx,
"incomplete or broken packet");
1670 if (page_id ==
ctx->composition_id || page_id ==
ctx->ancillary_id ||
1671 ctx->composition_id == -1 ||
ctx->ancillary_id == -1) {
1673 switch (segment_type) {
1684 if (ret < 0)
goto end;
1698 if (got_segment == 15 && !got_dds && !avctx->
width && !avctx->
height) {
1706 ff_dlog(avctx,
"Subtitling segment type 0x%x, page id %d, length %d\n",
1707 segment_type, page_id, segment_length);
1714 p += segment_length;
1718 if (got_segment == 15) {
1729 if (
ctx->compute_edt == 1)
1736 #define DS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_SUBTITLE_PARAM
1737 #define OFFSET(x) offsetof(DVBSubContext, x)
1739 {
"compute_edt",
"compute end of time using pts or timeout",
OFFSET(compute_edt),
AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1,
DS},
1740 {
"compute_clut",
"compute clut when not available(-1) or always(1) or never(0)",
OFFSET(compute_clut),
AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1,
DS},
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Libavcodec external API header.
#define FF_DEBUG_STARTCODE
#define FF_COMPLIANCE_NORMAL
static av_cold int init(AVCodecContext *avctx)
#define FFSWAP(type, a, b)
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
static float sub(float src0, float src1)
static DVBSubObject * get_object(DVBSubContext *ctx, int object_id)
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 int dvbsub_parse_region_segment(AVCodecContext *avctx, const uint8_t *buf, int buf_size)
static void delete_regions(DVBSubContext *ctx)
static int dvbsub_parse_object_segment(AVCodecContext *avctx, const uint8_t *buf, int buf_size)
static const AVOption options[]
static int dvbsub_display_end_segment(AVCodecContext *avctx, const uint8_t *buf, int buf_size, AVSubtitle *sub, int *got_output)
#define DVBSUB_OBJECT_SEGMENT
#define DVBSUB_PAGE_SEGMENT
static void delete_objects(DVBSubContext *ctx)
static int dvbsub_decode(AVCodecContext *avctx, void *data, int *got_sub_ptr, AVPacket *avpkt)
AVCodec ff_dvbsub_decoder
static DVBSubCLUT * get_clut(DVBSubContext *ctx, int clut_id)
static void compute_default_clut(DVBSubContext *ctx, uint8_t *clut, AVSubtitleRect *rect, int w, int h)
static int save_subtitle_set(AVCodecContext *avctx, AVSubtitle *sub, int *got_output)
static av_cold int dvbsub_close_decoder(AVCodecContext *avctx)
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_page_segment(AVCodecContext *avctx, const uint8_t *buf, int buf_size, AVSubtitle *sub, int *got_output)
static void delete_cluts(DVBSubContext *ctx)
static const AVClass dvbsubdec_class
#define DVBSUB_CLUT_SEGMENT
static void dvbsub_parse_pixel_data_block(AVCodecContext *avctx, DVBSubObjectDisplay *display, const uint8_t *buf, int buf_size, int top_bottom, int non_mod)
static int dvbsub_parse_display_definition_segment(AVCodecContext *avctx, const uint8_t *buf, int buf_size)
static av_cold int dvbsub_init_decoder(AVCodecContext *avctx)
#define DVBSUB_DISPLAYDEFINITION_SEGMENT
#define DVBSUB_REGION_SEGMENT
static DVBSubCLUT default_clut
static DVBSubRegion * get_region(DVBSubContext *ctx, int region_id)
static int dvbsub_parse_clut_segment(AVCodecContext *avctx, const uint8_t *buf, int buf_size)
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)
#define DVBSUB_DISPLAY_SEGMENT
static void delete_region_display_list(DVBSubContext *ctx, DVBSubRegion *region)
bitstream reader API header.
static unsigned int get_bits1(GetBitContext *s)
static int get_bits_count(const GetBitContext *s)
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
void avsubtitle_free(AVSubtitle *sub)
Free all allocated data in the given subtitle struct.
@ SUBTITLE_BITMAP
A bitmap, pict will be set.
@ AV_CODEC_ID_DVB_SUBTITLE
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
#define AV_LOG_WARNING
Something somehow does not look correct.
#define AV_LOG_INFO
Standard information.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
const char * av_default_item_name(void *ptr)
Return the context name.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
int av_image_check_size2(unsigned int w, unsigned int h, int64_t max_pixels, enum AVPixelFormat pix_fmt, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of a plane of an image with...
#define AV_NOPTS_VALUE
Undefined timestamp value.
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
#define LIBAVUTIL_VERSION_INT
static const int16_t alpha[]
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.
Various defines for YUV<->RGB conversion.
#define YUV_TO_RGB1_CCIR(cb1, cr1)
#define YUV_TO_RGB2_CCIR(r, g, b, y1)
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define FF_DISABLE_DEPRECATION_WARNINGS
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
#define FF_ENABLE_DEPRECATION_WARNINGS
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
Describe the class of an AVClass context structure.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
main external API structure.
int width
picture width / height.
int64_t max_pixels
The number of pixels per image to maximally accept.
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
const char * name
Name of the codec implementation.
This structure stores compressed data.
Rational number (pair of numerator and denominator).
DVBSubObject * object_list
int compute_edt
if 1 end display time calculated using pts if 0 (Default) calculated using time out
DVBSubRegionDisplay * display_list
DVBSubDisplayDefinition * display_definition
DVBSubRegion * region_list
int clut_count2[257][256]
struct DVBSubObjectDisplay * object_list_next
struct DVBSubObjectDisplay * region_list_next
struct DVBSubObject * next
DVBSubObjectDisplay * display_list
struct DVBSubRegionDisplay * next
DVBSubObjectDisplay * display_list
struct DVBSubRegion * next
uint8_t computed_clut[4 *256]
#define avpriv_request_sample(...)
static int command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
static double cr(void *priv, double x, double y)
static double cb(void *priv, double x, double y)