55 int r_add, g_add, b_add;
57 for (i = num_values; i > 0; i--) {
63 *rgba++ = (*alpha++ << 24) | (r << 16) | (g << 8) | b;
72 for (t = 1; v < t && t <= 0x40; t <<= 2)
111 if (start >= buf_size)
114 if (w <= 0 || h <= 0)
117 bit_len = (buf_size -
start) * 8;
130 len =
FFMIN(len, w - x);
131 memset(d + x, color, len);
147 uint32_t *rgba_palette,
148 uint32_t subtitle_color)
150 static const uint8_t level_map[4][4] = {
156 {0x00, 0x55, 0xaa, 0xff},
158 uint8_t color_used[16] = { 0 };
159 int nb_opaque_colors, i,
level, j,
r,
g,
b;
163 for(i = 0; i < 4; i++)
164 rgba_palette[i] = (ctx->
palette[colormap[i]] & 0x00ffffff)
165 | ((
alpha[i] * 17
U) << 24);
169 for(i = 0; i < 4; i++)
172 nb_opaque_colors = 0;
173 for(i = 0; i < 4; i++) {
174 if (
alpha[i] != 0 && !color_used[colormap[i]]) {
175 color_used[colormap[i]] = 1;
180 if (nb_opaque_colors == 0)
184 memset(color_used, 0, 16);
185 for(i = 0; i < 4; i++) {
187 if (!color_used[colormap[i]]) {
188 level = level_map[nb_opaque_colors][j];
189 r = (((subtitle_color >> 16) & 0xff) *
level) >> 8;
190 g = (((subtitle_color >> 8) & 0xff) *
level) >> 8;
191 b = (((subtitle_color >> 0) & 0xff) *
level) >> 8;
192 rgba_palette[i] = b | (g << 8) | (r << 16) | ((
alpha[i] * 17) << 24);
193 color_used[colormap[i]] = (i + 1);
196 rgba_palette[i] = (rgba_palette[color_used[colormap[i]] - 1] & 0x00ffffff) |
197 ((
alpha[i] * 17) << 24);
207 if (sub_header->
rects) {
208 for (i = 0; i < sub_header->
num_rects; i++) {
218 #define READ_OFFSET(a) (big_offsets ? AV_RB32(a) : AV_RB16(a))
223 int cmd_pos, pos, cmd, x1, y1, x2, y2, offset1, offset2, next_cmd_pos;
224 int big_offsets, offset_size, is_8bit = 0;
246 if (cmd_pos < 0 || cmd_pos > buf_size - 2 - offset_size)
249 while (cmd_pos > 0 && cmd_pos < buf_size - 2 - offset_size) {
252 ff_dlog(
NULL,
"cmd_pos=0x%04x next=0x%04x date=%d\n",
253 cmd_pos, next_cmd_pos, date);
254 pos = cmd_pos + 2 + offset_size;
257 x1 = y1 = x2 = y2 = 0;
258 while (pos < buf_size) {
276 if ((buf_size - pos) < 2)
278 colormap[3] = buf[pos] >> 4;
279 colormap[2] = buf[pos] & 0x0f;
280 colormap[1] = buf[pos + 1] >> 4;
281 colormap[0] = buf[pos + 1] & 0x0f;
286 if ((buf_size - pos) < 2)
288 alpha[3] = buf[pos] >> 4;
289 alpha[2] = buf[pos] & 0x0f;
290 alpha[1] = buf[pos + 1] >> 4;
291 alpha[0] = buf[pos + 1] & 0x0f;
297 if ((buf_size - pos) < 6)
299 x1 = (buf[pos] << 4) | (buf[pos + 1] >> 4);
300 x2 = ((buf[pos + 1] & 0x0f) << 8) | buf[pos + 2];
301 y1 = (buf[pos + 3] << 4) | (buf[pos + 4] >> 4);
302 y2 = ((buf[pos + 4] & 0x0f) << 8) | buf[pos + 5];
305 ff_dlog(
NULL,
"x1=%d x2=%d y1=%d y2=%d\n", x1, x2, y1, y2);
309 if ((buf_size - pos) < 4)
312 offset2 =
AV_RB16(buf + pos + 2);
313 ff_dlog(
NULL,
"offset1=0x%04x offset2=0x%04x\n", offset1, offset2);
317 if ((buf_size - pos) < 8)
320 offset2 =
AV_RB32(buf + pos + 4);
321 ff_dlog(
NULL,
"offset1=0x%04x offset2=0x%04x\n", offset1, offset2);
327 if ((buf_size - pos) < 768)
329 yuv_palette = buf + pos;
334 if ((buf_size - pos) < 256)
336 for (i = 0; i < 256; i++)
337 alpha[i] = 0xFF - buf[pos+i];
344 ff_dlog(
NULL,
"unrecognised subpicture command 0x%x\n", cmd);
360 if (w > 0 && h > 0) {
364 if (!sub_header->
rects)
367 if (!sub_header->
rects[0])
374 buf, offset1, buf_size, is_8bit) < 0)
377 buf, offset2, buf_size, is_8bit) < 0)
392 sub_header->
rects[0]->
x = x1;
393 sub_header->
rects[0]->
y = y1;
394 sub_header->
rects[0]->
w = w;
401 if (next_cmd_pos < cmd_pos) {
405 if (next_cmd_pos == cmd_pos)
407 cmd_pos = next_cmd_pos;
420 for(i = 0; i <
n; i++) {
421 if (!transp_color[*buf])
431 uint8_t transp_color[256] = { 0 };
432 int y1, y2, x1, x2,
y, w,
h, i;
444 1, s->
rects[0]->
w, transp_color))
446 if (y1 == s->
rects[0]->
h) {
454 s->
rects[0]->
w, transp_color))
458 s->
rects[0]->
h, transp_color))
469 for(y = 0; y <
h; y++) {
483 #define ALPHA_MIX(A,BACK,FORE) (((255-(A)) * (BACK) + (A) * (FORE)) / 255)
484 static void ppm_save(
const char *filename,
uint8_t *bitmap,
int w,
int h,
485 uint32_t *rgba_palette)
489 int back[3] = {0, 255, 0};
492 f = fopen(filename,
"w");
501 for(y = 0; y <
h; y++) {
502 for(x = 0; x < w; x++) {
503 v = rgba_palette[bitmap[y * w + x]];
505 putc(ALPHA_MIX(alpha, back[0], (v >> 16) & 0xff), f);
506 putc(ALPHA_MIX(alpha, back[1], (v >> 8) & 0xff), f);
507 putc(ALPHA_MIX(alpha, back[2], (v >> 0) & 0xff), f);
519 if (ctx->
buf_size >=
sizeof(ctx->
buf) - buf_size) {
521 "too large SPU packets aborted.\n");
531 void *
data,
int *data_size,
536 int buf_size = avpkt->
size;
551 if (is_menu ==
AVERROR(EAGAIN)) {
573 snprintf(ppm_name,
sizeof(ppm_name),
"/tmp/%05d.ppm", ctx->sub_id++);
593 ctx->
palette[i] = strtoul(p, &p, 16);
603 uint32_t sp_pgci, pgci, off_pgc, pgc;
605 int i,
y,
cb,
cr, r_add, g_add, b_add;
610 if ((ifo = fopen(p,
"r")) ==
NULL) {
614 if (fread(ifostr, 12, 1, ifo) != 1 || memcmp(ifostr,
"DVDVIDEO-VTS", 12)) {
619 if (fseek(ifo, 0xCC, SEEK_SET) == -1) {
623 if (fread(&sp_pgci, 4, 1, ifo) == 1) {
625 if (fseek(ifo, pgci + 0x0C, SEEK_SET) == -1) {
629 if (fread(&off_pgc, 4, 1, ifo) == 1) {
631 if (fseek(ifo, pgc + 0xA4, SEEK_SET) == -1) {
635 if (fread(yuv, 64, 1, ifo) == 1) {
637 for(i=0; i<16; i++) {
643 ctx->
palette[i] = (r << 16) + (g << 8) +
b;
662 char *dataorig, *
data;
675 int pos = strcspn(
data,
"\n\r");
676 if (pos==0 && *
data==0)
679 if (strncmp(
"palette:",
data, 8) == 0) {
681 }
else if (strncmp(
"size:",
data, 5) == 0) {
683 if (sscanf(
data + 5,
"%dx%d", &w, &h) == 2) {
734 #define OFFSET(field) offsetof(DVDSubContext, field)
735 #define SD AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_DECODING_PARAM
739 {
"forced_subs_only",
"Only show forced subtitles",
OFFSET(forced_subs_only),
AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1,
SD},
759 .priv_class = &dvdsub_class,
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static void dvdsub_flush(AVCodecContext *avctx)
int linesize[AV_NUM_DATA_POINTERS]
number of bytes per line
int x
top left corner of pict, undefined when pict is not set
ptrdiff_t const GLvoid * data
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)
int nb_colors
number of colors in pict, undefined when pict is not set
Various defines for YUV<->RGB conversion.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
static av_cold int dvdsub_close(AVCodecContext *avctx)
Macro definitions for various function/variable attributes.
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...
static double cb(void *priv, double x, double y)
int av_isspace(int c)
Locale-independent conversion of ASCII isspace.
static const uint32_t color[16+AV_CLASS_CATEGORY_NB]
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.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
static void reset_rects(AVSubtitle *sub_header)
static int get_bits_count(const GetBitContext *s)
#define AVERROR_EOF
End of file.
bitstream reader API header.
int h
height of pict, undefined when pict is not set
static av_cold int dvdsub_init(AVCodecContext *avctx)
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.
const char * name
Name of the codec implementation.
static int append_to_cached_buf(AVCodecContext *avctx, const uint8_t *buf, int buf_size)
Libavcodec external API header.
uint32_t end_display_time
static int decode_run_8bit(GetBitContext *gb, int *color)
A bitmap, pict will be set.
#define AV_SUBTITLE_FLAG_FORCED
static const AVClass dvdsub_class
AVPicture pict
data+linesize for the bitmap of this subtitle.
static void yuv_a_to_rgba(const uint8_t *ycbcr, const uint8_t *alpha, uint32_t *rgba, int num_values)
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
static int parse_ifo_palette(DVDSubContext *ctx, char *p)
static int is_transp(const uint8_t *buf, int pitch, int n, const uint8_t *transp_color)
static void flush(AVCodecContext *avctx)
AVCodec ff_dvdsub_decoder
static void parse_palette(DVDSubContext *ctx, char *p)
main external API structure.
static const AVOption options[]
static int decode_dvd_subtitles(DVDSubContext *ctx, AVSubtitle *sub_header, const uint8_t *buf, int buf_size)
static unsigned int get_bits1(GetBitContext *s)
Describe the class of an AVClass context structure.
#define YUV_TO_RGB2_CCIR(r, g, b, y1)
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
static int decode_run_2bit(GetBitContext *gb, int *color)
static int find_smallest_bounding_rectangle(AVSubtitle *s)
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
common internal api header.
static int dvdsub_parse_extradata(AVCodecContext *avctx)
uint32_t start_display_time
static void guess_palette(DVDSubContext *ctx, uint32_t *rgba_palette, uint32_t subtitle_color)
static int dvdsub_decode(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
static const uint8_t * align_get_bits(GetBitContext *s)
static double cr(void *priv, double x, double y)
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 ...
static int decode_rle(uint8_t *bitmap, int linesize, int w, int h, const uint8_t *buf, int start, int buf_size, int is_8bit)