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Diffstat (limited to 'contrib/ffmpeg/libavcodec/xsubdec.c')
-rw-r--r--contrib/ffmpeg/libavcodec/xsubdec.c136
1 files changed, 0 insertions, 136 deletions
diff --git a/contrib/ffmpeg/libavcodec/xsubdec.c b/contrib/ffmpeg/libavcodec/xsubdec.c
deleted file mode 100644
index 391a003ac..000000000
--- a/contrib/ffmpeg/libavcodec/xsubdec.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * XSUB subtitle decoder
- * Copyright (c) 2007 Reimar Döffinger
- *
- * 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"
-#include "bitstream.h"
-#include "bytestream.h"
-
-static int decode_init(AVCodecContext *avctx) {
- avctx->pix_fmt = PIX_FMT_PAL8;
- return 0;
-}
-
-static const uint8_t tc_offsets[9] = { 0, 1, 3, 4, 6, 7, 9, 10, 11 };
-static const uint8_t tc_muls[9] = { 10, 6, 10, 6, 10, 6, 10, 10, 1 };
-
-static uint64_t parse_timecode(const uint8_t *buf) {
- int i;
- int64_t ms = 0;
- if (buf[2] != ':' || buf[5] != ':' || buf[8] != '.')
- return AV_NOPTS_VALUE;
- for (i = 0; i < sizeof(tc_offsets); i++) {
- uint8_t c = buf[tc_offsets[i]] - '0';
- if (c > 9) return AV_NOPTS_VALUE;
- ms = (ms + c) * tc_muls[i];
- }
- return ms;
-}
-
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
- const uint8_t *buf, int buf_size) {
- AVSubtitle *sub = data;
- const uint8_t *buf_end = buf + buf_size;
- uint8_t *bitmap;
- int w, h, x, y, rlelen, i;
- GetBitContext gb;
-
- // check that at least header fits
- if (buf_size < 27 + 7 * 2 + 4 * 3) {
- av_log(avctx, AV_LOG_ERROR, "coded frame too small\n");
- return -1;
- }
-
- // read start and end time
- if (buf[0] != '[' || buf[13] != '-' || buf[26] != ']') {
- av_log(avctx, AV_LOG_ERROR, "invalid time code\n");
- return -1;
- }
- sub->start_display_time = parse_timecode(buf + 1);
- sub->end_display_time = parse_timecode(buf + 14);
- buf += 27;
-
- // read header
- w = bytestream_get_le16(&buf);
- h = bytestream_get_le16(&buf);
- if (avcodec_check_dimensions(avctx, w, h) < 0)
- return -1;
- x = bytestream_get_le16(&buf);
- y = bytestream_get_le16(&buf);
- // skip bottom right position, it gives no new information
- bytestream_get_le16(&buf);
- bytestream_get_le16(&buf);
- rlelen = bytestream_get_le16(&buf);
-
- // allocate sub and set values
- if (!sub->rects) {
- sub->rects = av_mallocz(sizeof(AVSubtitleRect));
- sub->num_rects = 1;
- }
- av_freep(&sub->rects[0].bitmap);
- sub->rects[0].x = x; sub->rects[0].y = y;
- sub->rects[0].w = w; sub->rects[0].h = h;
- sub->rects[0].linesize = w;
- sub->rects[0].bitmap = av_malloc(w * h);
- sub->rects[0].nb_colors = 4;
- sub->rects[0].rgba_palette = av_malloc(sub->rects[0].nb_colors * 4);
-
- // read palette
- for (i = 0; i < sub->rects[0].nb_colors; i++)
- sub->rects[0].rgba_palette[i] = bytestream_get_be24(&buf);
- // make all except background (first entry) non-transparent
- for (i = 1; i < sub->rects[0].nb_colors; i++)
- sub->rects[0].rgba_palette[i] |= 0xff000000;
-
- // process RLE-compressed data
- rlelen = FFMIN(rlelen, buf_end - buf);
- init_get_bits(&gb, buf, rlelen * 8);
- bitmap = sub->rects[0].bitmap;
- for (y = 0; y < h; y++) {
- // interlaced: do odd lines
- if (y == (h + 1) / 2) bitmap = sub->rects[0].bitmap + w;
- for (x = 0; x < w; ) {
- int log2 = ff_log2_tab[show_bits(&gb, 8)];
- int run = get_bits(&gb, 14 - 4 * (log2 >> 1));
- int color = get_bits(&gb, 2);
- run = FFMIN(run, w - x);
- // run length 0 means till end of row
- if (!run) run = w - x;
- memset(bitmap, color, run);
- bitmap += run;
- x += run;
- }
- // interlaced, skip every second line
- bitmap += w;
- align_get_bits(&gb);
- }
- *data_size = 1;
- return buf_size;
-}
-
-AVCodec xsub_decoder = {
- "xsub",
- CODEC_TYPE_SUBTITLE,
- CODEC_ID_XSUB,
- 0,
- decode_init,
- NULL,
- NULL,
- decode_frame,
-};