Skip to content

F
ffmpeg-mt
Commit 2b23868a authored by michael's avatar michael
Browse files
Options

DVB subtitle decoder by (Ian Caulfield: imc25, cam ac uk) 


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@4448 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b
parent 6b85266a
Expand all Show whitespace changes
Inline Side-by-side
Showing with 1946 additions and 178 deletions
ffmpeg.c
View file @ 2b23868a
......@@ -1423,8 +1423,14 @@ static int output_packet(AVInputStream *ist, int ist_index,
av_free(buffer_to_free);
/* XXX: allocate the subtitles in the codec ? */
if (subtitle_to_free) {
av_free(subtitle_to_free->bitmap);
av_free(subtitle_to_free->rgba_palette);
if (subtitle_to_free->rects != NULL) {
for (i = 0; i < subtitle_to_free->num_rects; i++) {
av_free(subtitle_to_free->rects[i].bitmap);
av_free(subtitle_to_free->rects[i].rgba_palette);
}
av_freep(&subtitle_to_free->rects);
}
subtitle_to_free->num_rects = 0;
subtitle_to_free = NULL;
}
}
......
libavcodec/Makefile
View file @ 2b23868a
......@@ -17,7 +17,7 @@ OBJS= bitstream.o utils.o mem.o allcodecs.o \
ratecontrol.o adpcm.o eval.o error_resilience.o \
fft.o mdct.o raw.o golomb.o cabac.o\
dpcm.o adx.o rational.o faandct.o parser.o g726.o \
vp3dsp.o integer.o h264idct.o rangecoder.o pnm.o h263.o msmpeg4.o h263dec.o dvdsub.o dvbsub.o
vp3dsp.o integer.o h264idct.o rangecoder.o pnm.o h263.o msmpeg4.o h263dec.o dvdsub.o dvbsub.o dvbsubdec.o
ifeq ($(CONFIG_AASC_DECODER),yes)
OBJS+= aasc.o
......
libavcodec/allcodecs.c
View file @ 2b23868a
......@@ -555,6 +555,7 @@ PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
/* subtitles */
register_avcodec(&dvdsub_decoder);
register_avcodec(&dvbsub_encoder);
register_avcodec(&dvbsub_decoder);
/* parsers */
av_register_codec_parser(&mpegvideo_parser);
......@@ -574,5 +575,6 @@ PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
av_register_codec_parser(&ac3_parser);
#endif
av_register_codec_parser(&dvdsub_parser);
av_register_codec_parser(&dvbsub_parser);
}
libavcodec/avcodec.h
View file @ 2b23868a
......@@ -1930,18 +1930,23 @@ typedef struct AVPaletteControl {
} AVPaletteControl;
typedef struct AVSubtitle {
uint16_t format; /* 0 = graphics */
typedef struct AVSubtitleRect {
uint16_t x;
uint16_t y;
uint16_t w;
uint16_t h;
uint16_t nb_colors;
uint32_t start_display_time; /* relative to packet pts, in ms */
uint32_t end_display_time; /* relative to packet pts, in ms */
int linesize;
uint32_t *rgba_palette;
uint8_t *bitmap;
} AVSubtitleRect;
typedef struct AVSubtitle {
uint16_t format; /* 0 = graphics */
uint32_t start_display_time; /* relative to packet pts, in ms */
uint32_t end_display_time; /* relative to packet pts, in ms */
uint32_t num_rects;
AVSubtitleRect *rects;
} AVSubtitle;
extern AVCodec ac3_encoder;
......@@ -2135,6 +2140,7 @@ extern AVCodec dts_decoder;
/* subtitles */
extern AVCodec dvdsub_decoder;
extern AVCodec dvbsub_encoder;
extern AVCodec dvbsub_decoder;
/* resample.c */
......@@ -2390,6 +2396,7 @@ extern AVCodecParser pnm_parser;
extern AVCodecParser mpegaudio_parser;
extern AVCodecParser ac3_parser;
extern AVCodecParser dvdsub_parser;
extern AVCodecParser dvbsub_parser;
/* memory */
void *av_malloc(unsigned int size);
......
libavcodec/dvbsub.c
View file @ 2b23868a
......@@ -225,18 +225,9 @@ static int encode_dvb_subtitles(DVBSubtitleContext *s,
q = outbuf;
page_id = 1;
region_id = 0;
clut_id = 0;
object_id = 0;
if (h->nb_colors <= 4) {
/* 2 bpp, some decoders do not support it correctly */
bpp_index = 0;
} else if (h->nb_colors <= 16) {
/* 4 bpp, standard encoding */
bpp_index = 1;
} else {
if (h->num_rects == 0 || h->rects == NULL)
return -1;
}
*q++ = 0x00; /* subtitle_stream_id */
......@@ -254,16 +245,31 @@ static int encode_dvb_subtitles(DVBSubtitleContext *s,
page_state = 2; /* mode change */
/* page_version = 0 + page_state */
*q++ = s->object_version | (page_state << 2) | 3;
for (region_id = 0; region_id < h->num_rects; region_id++) {
*q++ = region_id;
*q++ = 0xff; /* reserved */
putbe16(&q, 0); /* left pos */
putbe16(&q, 0); /* top pos */
putbe16(&q, h->rects[region_id].x); /* left pos */
putbe16(&q, h->rects[region_id].y); /* top pos */
}
putbe16(&pseg_len, q - pseg_len - 2);
if (!s->hide_state) {
for (clut_id = 0; clut_id < h->num_rects; clut_id++) {
/* CLUT segment */
if (h->rects[clut_id].nb_colors <= 4) {
/* 2 bpp, some decoders do not support it correctly */
bpp_index = 0;
} else if (h->rects[clut_id].nb_colors <= 16) {
/* 4 bpp, standard encoding */
bpp_index = 1;
} else {
return -1;
}
*q++ = 0x0f; /* sync byte */
*q++ = 0x12; /* CLUT definition segment */
putbe16(&q, page_id);
......@@ -272,15 +278,15 @@ static int encode_dvb_subtitles(DVBSubtitleContext *s,
*q++ = clut_id;
*q++ = (0 << 4) | 0xf; /* version = 0 */
for(i = 0; i < h->nb_colors; i++) {
for(i = 0; i < h->rects[clut_id].nb_colors; i++) {
*q++ = i; /* clut_entry_id */
*q++ = (1 << (7 - bpp_index)) | (0xf << 1) | 1; /* 2 bits/pixel full range */
{
int a, r, g, b;
a = (h->rgba_palette[i] >> 24) & 0xff;
r = (h->rgba_palette[i] >> 16) & 0xff;
g = (h->rgba_palette[i] >> 8) & 0xff;
b = (h->rgba_palette[i] >> 0) & 0xff;
a = (h->rects[clut_id].rgba_palette[i] >> 24) & 0xff;
r = (h->rects[clut_id].rgba_palette[i] >> 16) & 0xff;
g = (h->rects[clut_id].rgba_palette[i] >> 8) & 0xff;
b = (h->rects[clut_id].rgba_palette[i] >> 0) & 0xff;
*q++ = RGB_TO_Y_CCIR(r, g, b);
*q++ = RGB_TO_V_CCIR(r, g, b, 0);
......@@ -291,8 +297,22 @@ static int encode_dvb_subtitles(DVBSubtitleContext *s,
putbe16(&pseg_len, q - pseg_len - 2);
}
}
for (region_id = 0; region_id < h->num_rects; region_id++) {
/* region composition segment */
if (h->rects[region_id].nb_colors <= 4) {
/* 2 bpp, some decoders do not support it correctly */
bpp_index = 0;
} else if (h->rects[region_id].nb_colors <= 16) {
/* 4 bpp, standard encoding */
bpp_index = 1;
} else {
return -1;
}
*q++ = 0x0f; /* sync_byte */
*q++ = 0x11; /* segment_type */
putbe16(&q, page_id);
......@@ -300,27 +320,39 @@ static int encode_dvb_subtitles(DVBSubtitleContext *s,
q += 2; /* segment length */
*q++ = region_id;
*q++ = (s->object_version << 4) | (0 << 3) | 0x07; /* version , no fill */
putbe16(&q, 720); /* region width */
putbe16(&q, 576); /* region height */
putbe16(&q, h->rects[region_id].w); /* region width */
putbe16(&q, h->rects[region_id].h); /* region height */
*q++ = ((1 + bpp_index) << 5) | ((1 + bpp_index) << 2) | 0x03;
*q++ = clut_id;
*q++ = region_id; /* clut_id == region_id */
*q++ = 0; /* 8 bit fill colors */
*q++ = 0x03; /* 4 bit and 2 bit fill colors */
if (!s->hide_state) {
putbe16(&q, object_id);
*q++ = (0 << 6) | (0 << 4) | ((h->x >> 8) & 0xf);
*q++ = h->x;
*q++ = 0xf0 | ((h->y >> 8) & 0xf);
*q++ = h->y;
putbe16(&q, region_id); /* object_id == region_id */
*q++ = (0 << 6) | (0 << 4);
*q++ = 0;
*q++ = 0xf0;
*q++ = 0;
}
putbe16(&pseg_len, q - pseg_len - 2);
}
if (!s->hide_state) {
for (object_id = 0; object_id < h->num_rects; object_id++) {
/* Object Data segment */
if (h->rects[region_id].nb_colors <= 4) {
/* 2 bpp, some decoders do not support it correctly */
bpp_index = 0;
} else if (h->rects[region_id].nb_colors <= 16) {
/* 4 bpp, standard encoding */
bpp_index = 1;
} else {
return -1;
}
*q++ = 0x0f; /* sync byte */
*q++ = 0x13;
putbe16(&q, page_id);
......@@ -347,9 +379,12 @@ static int encode_dvb_subtitles(DVBSubtitleContext *s,
dvb_encode_rle = dvb_encode_rle4;
top_ptr = q;
dvb_encode_rle(&q, h->bitmap, h->w * 2, h->w, h->h >> 1);
dvb_encode_rle(&q, h->rects[object_id].bitmap, h->rects[object_id].w * 2,
h->rects[object_id].w, h->rects[object_id].h >> 1);
bottom_ptr = q;
dvb_encode_rle(&q, h->bitmap + h->w, h->w * 2, h->w, h->h >> 1);
dvb_encode_rle(&q, h->rects[object_id].bitmap + h->rects[object_id].w,
h->rects[object_id].w * 2, h->rects[object_id].w,
h->rects[object_id].h >> 1);
putbe16(&ptop_field_len, bottom_ptr - top_ptr);
putbe16(&pbottom_field_len, q - bottom_ptr);
......@@ -357,6 +392,7 @@ static int encode_dvb_subtitles(DVBSubtitleContext *s,
putbe16(&pseg_len, q - pseg_len - 2);
}
}
/* end of display set segment */
......
libavcodec/dvbsubdec.c 0 → 100644
View file @ 2b23868a
This diff is collapsed.
libavformat/mpegts.c
View file @ 2b23868a
This diff is collapsed.
libavformat/mpegts.h
View file @ 2b23868a
......@@ -31,6 +31,9 @@
#define PMT_TID 0x02
#define SDT_TID 0x42
/* descriptor ids */
#define DVB_SUBT_DESCID 0x59
#define STREAM_TYPE_VIDEO_MPEG1 0x01
#define STREAM_TYPE_VIDEO_MPEG2 0x02
#define STREAM_TYPE_AUDIO_MPEG1 0x03
......@@ -44,6 +47,8 @@
#define STREAM_TYPE_AUDIO_AC3 0x81
#define STREAM_TYPE_AUDIO_DTS 0x8a
#define STREAM_TYPE_SUBTITLE_DVB 0x100
unsigned int mpegts_crc32(const uint8_t *data, int len);
extern AVOutputFormat mpegts_mux;
......
libavformat/utils.c
View file @ 2b23868a
......@@ -2508,6 +2508,9 @@ void dump_format(AVFormatContext *ic,
if (flags & AVFMT_SHOW_IDS) {
av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
}
if (strlen(st->language) > 0) {
av_log(NULL, AV_LOG_INFO, "(%s)", st->language);
}
av_log(NULL, AV_LOG_INFO, ": %s\n", buf);
}
}
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment