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Diffstat (limited to 'contrib/ffmpeg/libavcodec/dvbsub.c')
-rw-r--r--contrib/ffmpeg/libavcodec/dvbsub.c445
1 files changed, 0 insertions, 445 deletions
diff --git a/contrib/ffmpeg/libavcodec/dvbsub.c b/contrib/ffmpeg/libavcodec/dvbsub.c
deleted file mode 100644
index 44ba19d86..000000000
--- a/contrib/ffmpeg/libavcodec/dvbsub.c
+++ /dev/null
@@ -1,445 +0,0 @@
-/*
- * DVB subtitle encoding for ffmpeg
- * Copyright (c) 2005 Fabrice Bellard.
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-#include "avcodec.h"
-
-typedef struct DVBSubtitleContext {
- int hide_state;
- int object_version;
-} DVBSubtitleContext;
-
-#define PUTBITS2(val)\
-{\
- bitbuf |= (val) << bitcnt;\
- bitcnt -= 2;\
- if (bitcnt < 0) {\
- bitcnt = 6;\
- *q++ = bitbuf;\
- bitbuf = 0;\
- }\
-}
-
-static void dvb_encode_rle2(uint8_t **pq,
- const uint8_t *bitmap, int linesize,
- int w, int h)
-{
- uint8_t *q;
- unsigned int bitbuf;
- int bitcnt;
- int x, y, len, x1, v, color;
-
- q = *pq;
-
- for(y = 0; y < h; y++) {
- *q++ = 0x10;
- bitbuf = 0;
- bitcnt = 6;
-
- x = 0;
- while (x < w) {
- x1 = x;
- color = bitmap[x1++];
- while (x1 < w && bitmap[x1] == color)
- x1++;
- len = x1 - x;
- if (color == 0 && len == 2) {
- PUTBITS2(0);
- PUTBITS2(0);
- PUTBITS2(1);
- } else if (len >= 3 && len <= 10) {
- v = len - 3;
- PUTBITS2(0);
- PUTBITS2((v >> 2) | 2);
- PUTBITS2(v & 3);
- PUTBITS2(color);
- } else if (len >= 12 && len <= 27) {
- v = len - 12;
- PUTBITS2(0);
- PUTBITS2(0);
- PUTBITS2(2);
- PUTBITS2(v >> 2);
- PUTBITS2(v & 3);
- PUTBITS2(color);
- } else if (len >= 29) {
- /* length = 29 ... 284 */
- if (len > 284)
- len = 284;
- v = len - 29;
- PUTBITS2(0);
- PUTBITS2(0);
- PUTBITS2(3);
- PUTBITS2((v >> 6));
- PUTBITS2((v >> 4) & 3);
- PUTBITS2((v >> 2) & 3);
- PUTBITS2(v & 3);
- PUTBITS2(color);
- } else {
- PUTBITS2(color);
- if (color == 0) {
- PUTBITS2(1);
- }
- len = 1;
- }
- x += len;
- }
- /* end of line */
- PUTBITS2(0);
- PUTBITS2(0);
- PUTBITS2(0);
- if (bitcnt != 6) {
- *q++ = bitbuf;
- }
- *q++ = 0xf0;
- bitmap += linesize;
- }
- *pq = q;
-}
-
-#define PUTBITS4(val)\
-{\
- bitbuf |= (val) << bitcnt;\
- bitcnt -= 4;\
- if (bitcnt < 0) {\
- bitcnt = 4;\
- *q++ = bitbuf;\
- bitbuf = 0;\
- }\
-}
-
-/* some DVB decoders only implement 4 bits/pixel */
-static void dvb_encode_rle4(uint8_t **pq,
- const uint8_t *bitmap, int linesize,
- int w, int h)
-{
- uint8_t *q;
- unsigned int bitbuf;
- int bitcnt;
- int x, y, len, x1, v, color;
-
- q = *pq;
-
- for(y = 0; y < h; y++) {
- *q++ = 0x11;
- bitbuf = 0;
- bitcnt = 4;
-
- x = 0;
- while (x < w) {
- x1 = x;
- color = bitmap[x1++];
- while (x1 < w && bitmap[x1] == color)
- x1++;
- len = x1 - x;
- if (color == 0 && len == 2) {
- PUTBITS4(0);
- PUTBITS4(0xd);
- } else if (color == 0 && (len >= 3 && len <= 9)) {
- PUTBITS4(0);
- PUTBITS4(len - 2);
- } else if (len >= 4 && len <= 7) {
- PUTBITS4(0);
- PUTBITS4(8 + len - 4);
- PUTBITS4(color);
- } else if (len >= 9 && len <= 24) {
- PUTBITS4(0);
- PUTBITS4(0xe);
- PUTBITS4(len - 9);
- PUTBITS4(color);
- } else if (len >= 25) {
- if (len > 280)
- len = 280;
- v = len - 25;
- PUTBITS4(0);
- PUTBITS4(0xf);
- PUTBITS4(v >> 4);
- PUTBITS4(v & 0xf);
- PUTBITS4(color);
- } else {
- PUTBITS4(color);
- if (color == 0) {
- PUTBITS4(0xc);
- }
- len = 1;
- }
- x += len;
- }
- /* end of line */
- PUTBITS4(0);
- PUTBITS4(0);
- if (bitcnt != 4) {
- *q++ = bitbuf;
- }
- *q++ = 0xf0;
- bitmap += linesize;
- }
- *pq = q;
-}
-
-#define SCALEBITS 10
-#define ONE_HALF (1 << (SCALEBITS - 1))
-#define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
-
-#define RGB_TO_Y_CCIR(r, g, b) \
-((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
- FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
-
-#define RGB_TO_U_CCIR(r1, g1, b1, shift)\
-(((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 + \
- FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
-
-#define RGB_TO_V_CCIR(r1, g1, b1, shift)\
-(((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 - \
- FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
-
-static inline void putbe16(uint8_t **pq, uint16_t v)
-{
- uint8_t *q;
- q = *pq;
- *q++ = v >> 8;
- *q++ = v;
- *pq = q;
-}
-
-static int encode_dvb_subtitles(DVBSubtitleContext *s,
- uint8_t *outbuf, AVSubtitle *h)
-{
- uint8_t *q, *pseg_len;
- int page_id, region_id, clut_id, object_id, i, bpp_index, page_state;
-
-
- q = outbuf;
-
- page_id = 1;
-
- if (h->num_rects == 0 || h->rects == NULL)
- return -1;
-
- *q++ = 0x00; /* subtitle_stream_id */
-
- /* page composition segment */
-
- *q++ = 0x0f; /* sync_byte */
- *q++ = 0x10; /* segment_type */
- putbe16(&q, page_id);
- pseg_len = q;
- q += 2; /* segment length */
- *q++ = 30; /* page_timeout (seconds) */
- if (s->hide_state)
- page_state = 0; /* normal case */
- else
- 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, 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);
- pseg_len = q;
- q += 2; /* segment length */
- *q++ = clut_id;
- *q++ = (0 << 4) | 0xf; /* version = 0 */
-
- 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->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);
- *q++ = RGB_TO_U_CCIR(r, g, b, 0);
- *q++ = 255 - a;
- }
- }
-
- 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);
- pseg_len = q;
- q += 2; /* segment length */
- *q++ = region_id;
- *q++ = (s->object_version << 4) | (0 << 3) | 0x07; /* version , no fill */
- 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++ = 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, 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[object_id].nb_colors <= 4) {
- /* 2 bpp, some decoders do not support it correctly */
- bpp_index = 0;
- } else if (h->rects[object_id].nb_colors <= 16) {
- /* 4 bpp, standard encoding */
- bpp_index = 1;
- } else {
- return -1;
- }
-
- *q++ = 0x0f; /* sync byte */
- *q++ = 0x13;
- putbe16(&q, page_id);
- pseg_len = q;
- q += 2; /* segment length */
-
- putbe16(&q, object_id);
- *q++ = (s->object_version << 4) | (0 << 2) | (0 << 1) | 1; /* version = 0,
- onject_coding_method,
- non_modifying_color_flag */
- {
- uint8_t *ptop_field_len, *pbottom_field_len, *top_ptr, *bottom_ptr;
- void (*dvb_encode_rle)(uint8_t **pq,
- const uint8_t *bitmap, int linesize,
- int w, int h);
- ptop_field_len = q;
- q += 2;
- pbottom_field_len = q;
- q += 2;
-
- if (bpp_index == 0)
- dvb_encode_rle = dvb_encode_rle2;
- else
- dvb_encode_rle = dvb_encode_rle4;
-
- top_ptr = q;
- 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->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);
- }
-
- putbe16(&pseg_len, q - pseg_len - 2);
- }
- }
-
- /* end of display set segment */
-
- *q++ = 0x0f; /* sync_byte */
- *q++ = 0x80; /* segment_type */
- putbe16(&q, page_id);
- pseg_len = q;
- q += 2; /* segment length */
-
- putbe16(&pseg_len, q - pseg_len - 2);
-
- *q++ = 0xff; /* end of PES data */
-
- s->object_version = (s->object_version + 1) & 0xf;
- s->hide_state = !s->hide_state;
- return q - outbuf;
-}
-
-static int dvbsub_init_decoder(AVCodecContext *avctx)
-{
- return 0;
-}
-
-static int dvbsub_close_decoder(AVCodecContext *avctx)
-{
- return 0;
-}
-
-static int dvbsub_encode(AVCodecContext *avctx,
- unsigned char *buf, int buf_size, void *data)
-{
- DVBSubtitleContext *s = avctx->priv_data;
- AVSubtitle *sub = data;
- int ret;
-
- ret = encode_dvb_subtitles(s, buf, sub);
- return ret;
-}
-
-AVCodec dvbsub_encoder = {
- "dvbsub",
- CODEC_TYPE_SUBTITLE,
- CODEC_ID_DVB_SUBTITLE,
- sizeof(DVBSubtitleContext),
- dvbsub_init_decoder,
- dvbsub_encode,
- dvbsub_close_decoder,
-};
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