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Add option forced_subs_only for Bluray subtitles.

This commit is contained in:
Carl Eugen Hoyos 2012-01-30 11:25:59 +01:00
parent 6838df0488
commit 36436a4032
2 changed files with 25 additions and 8 deletions
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31
libavcodec/pgssubdec.c
View File

@ -29,6 +29,7 @@
#include "bytestream.h"
#include "libavutil/colorspace.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#define RGBA(r,g,b,a) (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))
@ -44,6 +45,7 @@ typedef struct PGSSubPictureReference {
int x;
int y;
int picture_id;
int composition;
} PGSSubPictureReference;
typedef struct PGSSubPresentation {
@ -61,9 +63,11 @@ typedef struct PGSSubPicture {
} PGSSubPicture;
typedef struct PGSSubContext {
AVClass *class;
PGSSubPresentation presentation;
uint32_t clut[256];
PGSSubPicture pictures[UINT16_MAX];
int forced_subs_only;
} PGSSubContext;
static av_cold int init_decoder(AVCodecContext *avctx)
@ -283,7 +287,6 @@ static void parse_palette_segment(AVCodecContext *avctx,
* @param buf pointer to the packet to process
* @param buf_size size of packet to process
* @todo TODO: Implement cropping
* @todo TODO: Implement forcing of subtitles
*/
static void parse_presentation_segment(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
@ -335,12 +338,10 @@ static void parse_presentation_segment(AVCodecContext *avctx,
PGSSubPictureReference *reference = &ctx->presentation.objects[object_index];
reference->picture_id = bytestream_get_be16(&buf);
/*
* Skip 2 bytes of unknown:
* window_id_ref,
* composition_flag (0x80 - object cropped, 0x40 - object forced)
*/
buf += 2;
/* Skip window_id_ref */
buf++;
/* composition_flag (0x80 - object cropped, 0x40 - object forced) */
reference->composition = bytestream_get_byte(&buf);
reference->x = bytestream_get_be16(&buf);
reference->y = bytestream_get_be16(&buf);
@ -422,6 +423,7 @@ static int display_end_segment(AVCodecContext *avctx, void *data,
sub->rects[rect]->nb_colors = 256;
sub->rects[rect]->pict.data[1] = av_mallocz(AVPALETTE_SIZE);
if (!ctx->forced_subs_only || ctx->presentation.objects[rect].composition & 0x40)
memcpy(sub->rects[rect]->pict.data[1], ctx->clut, sub->rects[rect]->nb_colors * sizeof(uint32_t));
}
@ -503,6 +505,20 @@ static int decode(AVCodecContext *avctx, void *data, int *data_size,
return buf_size;
}
#define OFFSET(x) offsetof(PGSSubContext, x)
#define SD AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_DECODING_PARAM
static const AVOption options[] = {
{"forced_subs_only", "Only show forced subtitles", OFFSET(forced_subs_only), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, SD},
{ NULL },
};
static const AVClass pgsdec_class = {
.class_name = "PGS subtitle decoder",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
AVCodec ff_pgssub_decoder = {
.name = "pgssub",
.type = AVMEDIA_TYPE_SUBTITLE,
@ -512,4 +528,5 @@ AVCodec ff_pgssub_decoder = {
.close = close_decoder,
.decode = decode,
.long_name = NULL_IF_CONFIG_SMALL("HDMV Presentation Graphic Stream subtitles"),
.priv_class = &pgsdec_class,
};

2
libavcodec/version.h
View File

@ -22,7 +22,7 @@
#define LIBAVCODEC_VERSION_MAJOR 54
#define LIBAVCODEC_VERSION_MINOR 0
#define LIBAVCODEC_VERSION_MICRO 101
#define LIBAVCODEC_VERSION_MICRO 102
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \