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/* |
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* DVD subtitle encoding |
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* Copyright (c) 2005 Wolfram Gloger |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "avcodec.h" |
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#include "bytestream.h" |
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#include "internal.h" |
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#include "libavutil/avassert.h" |
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#include "libavutil/bprint.h" |
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#include "libavutil/imgutils.h" |
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#include "libavutil/opt.h" |
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typedef struct { |
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AVClass *class; |
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uint32_t global_palette[16]; |
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char *palette_str; |
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int even_rows_fix; |
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} DVDSubtitleContext; |
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// ncnt is the nibble counter |
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#define PUTNIBBLE(val)\ |
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do {\ |
39 |
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if (ncnt++ & 1)\ |
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*q++ = bitbuf | ((val) & 0x0f);\ |
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else\ |
42 |
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bitbuf = (val) << 4;\ |
43 |
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} while(0) |
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static void dvd_encode_rle(uint8_t **pq, |
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const uint8_t *bitmap, int linesize, |
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int w, int h, |
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const int cmap[256]) |
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{ |
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uint8_t *q; |
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unsigned int bitbuf = 0; |
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int ncnt; |
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int x, y, len, color; |
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q = *pq; |
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|
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✓✓ |
1649 |
for (y = 0; y < h; ++y) { |
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1563 |
ncnt = 0; |
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✓✓ |
119769 |
for(x = 0; x < w; x += len) { |
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118206 |
color = bitmap[x]; |
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✓✓ |
473056 |
for (len=1; x+len < w; ++len) |
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✓✓ |
471493 |
if (bitmap[x+len] != color) |
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116643 |
break; |
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118206 |
color = cmap[color]; |
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✗✓ |
118206 |
av_assert0(color < 4); |
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✓✓ |
118206 |
if (len < 0x04) { |
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✓✓ |
94474 |
PUTNIBBLE((len << 2)|color); |
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✓✓ |
23732 |
} else if (len < 0x10) { |
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✓✓ |
21030 |
PUTNIBBLE(len >> 2); |
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✓✓ |
21030 |
PUTNIBBLE((len << 2)|color); |
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✓✓ |
2702 |
} else if (len < 0x40) { |
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✓✓ |
1843 |
PUTNIBBLE(0); |
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✓✓ |
1843 |
PUTNIBBLE(len >> 2); |
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✓✓ |
1843 |
PUTNIBBLE((len << 2)|color); |
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✓✓ |
859 |
} else if (x+len == w) { |
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✓✓ |
321 |
PUTNIBBLE(0); |
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✓✓ |
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PUTNIBBLE(0); |
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✓✓ |
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PUTNIBBLE(0); |
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✓✓ |
321 |
PUTNIBBLE(color); |
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} else { |
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✓✓ |
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if (len > 0xff) |
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len = 0xff; |
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✓✓ |
538 |
PUTNIBBLE(0); |
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✓✓ |
538 |
PUTNIBBLE(len >> 6); |
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✓✓ |
538 |
PUTNIBBLE(len >> 2); |
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✓✓ |
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PUTNIBBLE((len << 2)|color); |
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} |
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} |
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/* end of line */ |
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✓✓ |
1563 |
if (ncnt & 1) |
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✓✗ |
739 |
PUTNIBBLE(0); |
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1563 |
bitmap += linesize; |
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} |
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*pq = q; |
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} |
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45795 |
static int color_distance(uint32_t a, uint32_t b) |
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{ |
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45795 |
int r = 0, d, i; |
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45795 |
int alpha_a = 8, alpha_b = 8; |
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✓✓ |
228975 |
for (i = 24; i >= 0; i -= 8) { |
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183180 |
d = alpha_a * (int)((a >> i) & 0xFF) - |
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183180 |
alpha_b * (int)((b >> i) & 0xFF); |
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183180 |
r += d * d; |
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183180 |
alpha_a = a >> 28; |
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183180 |
alpha_b = b >> 28; |
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} |
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45795 |
return r; |
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} |
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/** |
114 |
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* Count colors used in a rectangle, quantizing alpha and grouping by |
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* nearest global palette entry. |
116 |
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*/ |
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static void count_colors(AVCodecContext *avctx, unsigned hits[33], |
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const AVSubtitleRect *r) |
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{ |
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DVDSubtitleContext *dvdc = avctx->priv_data; |
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unsigned count[256] = { 0 }; |
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uint32_t *palette = (uint32_t *)r->data[1]; |
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uint32_t color; |
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int x, y, i, j, match, d, best_d, av_uninit(best_j); |
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uint8_t *p = r->data[0]; |
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✓✓ |
1606 |
for (y = 0; y < r->h; y++) { |
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✓✓ |
473710 |
for (x = 0; x < r->w; x++) |
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472147 |
count[*(p++)]++; |
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1563 |
p += r->linesize[0] - r->w; |
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} |
132 |
✓✓ |
11051 |
for (i = 0; i < 256; i++) { |
133 |
✓✓ |
11008 |
if (!count[i]) /* avoid useless search */ |
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10836 |
continue; |
135 |
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172 |
color = palette[i]; |
136 |
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/* 0: transparent, 1-16: semi-transparent, 17-33 opaque */ |
137 |
✓✓✗✓
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match = color < 0x33000000 ? 0 : color < 0xCC000000 ? 1 : 17; |
138 |
✓✓ |
172 |
if (match) { |
139 |
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86 |
best_d = INT_MAX; |
140 |
✓✓ |
1462 |
for (j = 0; j < 16; j++) { |
141 |
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1376 |
d = color_distance(0xFF000000 | color, |
142 |
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1376 |
0xFF000000 | dvdc->global_palette[j]); |
143 |
✓✓ |
1376 |
if (d < best_d) { |
144 |
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172 |
best_d = d; |
145 |
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172 |
best_j = j; |
146 |
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} |
147 |
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} |
148 |
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86 |
match += best_j; |
149 |
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} |
150 |
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172 |
hits[match] += count[i]; |
151 |
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} |
152 |
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43 |
} |
153 |
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154 |
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static void select_palette(AVCodecContext *avctx, int out_palette[4], |
155 |
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int out_alpha[4], unsigned hits[33]) |
156 |
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{ |
157 |
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DVDSubtitleContext *dvdc = avctx->priv_data; |
158 |
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int i, j, bright, mult; |
159 |
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uint32_t color; |
160 |
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int selected[4] = { 0 }; |
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uint32_t pseudopal[33] = { 0 }; |
162 |
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uint32_t refcolor[3] = { 0x00000000, 0xFFFFFFFF, 0xFF000000 }; |
163 |
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164 |
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/* Bonus for transparent: if the rectangle fits tightly the text, the |
165 |
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background color can be quite rare, but it would be ugly without it */ |
166 |
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hits[0] *= 16; |
167 |
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/* Bonus for bright colors */ |
168 |
✓✓ |
731 |
for (i = 0; i < 16; i++) { |
169 |
✓✓ |
688 |
if (!(hits[1 + i] + hits[17 + i])) |
170 |
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602 |
continue; /* skip unused colors to gain time */ |
171 |
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86 |
color = dvdc->global_palette[i]; |
172 |
|
86 |
bright = 0; |
173 |
✓✓ |
344 |
for (j = 0; j < 3; j++, color >>= 8) |
174 |
✓✓✓✗
|
258 |
bright += (color & 0xFF) < 0x40 || (color & 0xFF) >= 0xC0; |
175 |
|
86 |
mult = 2 + FFMIN(bright, 2); |
176 |
|
86 |
hits[ 1 + i] *= mult; |
177 |
|
86 |
hits[17 + i] *= mult; |
178 |
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} |
179 |
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180 |
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/* Select four most frequent colors */ |
181 |
✓✓ |
215 |
for (i = 0; i < 4; i++) { |
182 |
✓✓ |
5848 |
for (j = 0; j < 33; j++) |
183 |
✓✓ |
5676 |
if (hits[j] > hits[selected[i]]) |
184 |
|
129 |
selected[i] = j; |
185 |
|
172 |
hits[selected[i]] = 0; |
186 |
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} |
187 |
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188 |
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/* Order the colors like in most DVDs: |
189 |
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0: background, 1: foreground, 2: outline */ |
190 |
✓✓ |
731 |
for (i = 0; i < 16; i++) { |
191 |
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688 |
pseudopal[ 1 + i] = 0x80000000 | dvdc->global_palette[i]; |
192 |
|
688 |
pseudopal[17 + i] = 0xFF000000 | dvdc->global_palette[i]; |
193 |
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} |
194 |
✓✓ |
172 |
for (i = 0; i < 3; i++) { |
195 |
|
129 |
int best_d = color_distance(refcolor[i], pseudopal[selected[i]]); |
196 |
✓✓ |
387 |
for (j = i + 1; j < 4; j++) { |
197 |
|
258 |
int d = color_distance(refcolor[i], pseudopal[selected[j]]); |
198 |
✗✓ |
258 |
if (d < best_d) { |
199 |
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FFSWAP(int, selected[i], selected[j]); |
200 |
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best_d = d; |
201 |
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} |
202 |
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} |
203 |
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} |
204 |
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|
205 |
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/* Output */ |
206 |
✓✓ |
215 |
for (i = 0; i < 4; i++) { |
207 |
✓✓ |
172 |
out_palette[i] = selected[i] ? (selected[i] - 1) & 0xF : 0; |
208 |
✓✓✗✓
|
172 |
out_alpha [i] = !selected[i] ? 0 : selected[i] < 17 ? 0x80 : 0xFF; |
209 |
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} |
210 |
|
43 |
} |
211 |
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212 |
|
43 |
static void build_color_map(AVCodecContext *avctx, int cmap[], |
213 |
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const uint32_t palette[], |
214 |
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const int out_palette[], unsigned int const out_alpha[]) |
215 |
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{ |
216 |
|
43 |
DVDSubtitleContext *dvdc = avctx->priv_data; |
217 |
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int i, j, d, best_d; |
218 |
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uint32_t pseudopal[4]; |
219 |
|
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|
220 |
✓✓ |
215 |
for (i = 0; i < 4; i++) |
221 |
|
172 |
pseudopal[i] = (out_alpha[i] << 24) | |
222 |
|
172 |
dvdc->global_palette[out_palette[i]]; |
223 |
✓✓ |
11051 |
for (i = 0; i < 256; i++) { |
224 |
|
11008 |
best_d = INT_MAX; |
225 |
✓✓ |
55040 |
for (j = 0; j < 4; j++) { |
226 |
|
44032 |
d = color_distance(pseudopal[j], palette[i]); |
227 |
✓✓ |
44032 |
if (d < best_d) { |
228 |
|
11094 |
cmap[i] = j; |
229 |
|
11094 |
best_d = d; |
230 |
|
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} |
231 |
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} |
232 |
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} |
233 |
|
43 |
} |
234 |
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|
235 |
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static void copy_rectangle(AVSubtitleRect *dst, AVSubtitleRect *src, int cmap[]) |
236 |
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{ |
237 |
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int x, y; |
238 |
|
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uint8_t *p, *q; |
239 |
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|
240 |
|
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p = src->data[0]; |
241 |
|
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q = dst->data[0] + (src->x - dst->x) + |
242 |
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(src->y - dst->y) * dst->linesize[0]; |
243 |
|
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for (y = 0; y < src->h; y++) { |
244 |
|
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for (x = 0; x < src->w; x++) |
245 |
|
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*(q++) = cmap[*(p++)]; |
246 |
|
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p += src->linesize[0] - src->w; |
247 |
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q += dst->linesize[0] - src->w; |
248 |
|
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} |
249 |
|
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} |
250 |
|
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|
251 |
|
43 |
static int encode_dvd_subtitles(AVCodecContext *avctx, |
252 |
|
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uint8_t *outbuf, int outbuf_size, |
253 |
|
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const AVSubtitle *h) |
254 |
|
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{ |
255 |
|
43 |
DVDSubtitleContext *dvdc = avctx->priv_data; |
256 |
|
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uint8_t *q, *qq; |
257 |
|
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int offset1, offset2; |
258 |
|
43 |
int i, rects = h->num_rects, ret; |
259 |
|
43 |
unsigned global_palette_hits[33] = { 0 }; |
260 |
|
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int cmap[256]; |
261 |
|
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int out_palette[4]; |
262 |
|
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int out_alpha[4]; |
263 |
|
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AVSubtitleRect vrect; |
264 |
|
43 |
uint8_t *vrect_data = NULL; |
265 |
|
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int x2, y2; |
266 |
|
43 |
int forced = 0; |
267 |
|
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|
268 |
✓✗✗✓
|
43 |
if (rects == 0 || !h->rects) |
269 |
|
|
return AVERROR(EINVAL); |
270 |
✓✓ |
86 |
for (i = 0; i < rects; i++) |
271 |
✗✓ |
43 |
if (h->rects[i]->type != SUBTITLE_BITMAP) { |
272 |
|
|
av_log(avctx, AV_LOG_ERROR, "Bitmap subtitle required\n"); |
273 |
|
|
return AVERROR(EINVAL); |
274 |
|
|
} |
275 |
|
|
/* Mark this subtitle forced if any of the rectangles is forced. */ |
276 |
✓✓ |
86 |
for (i = 0; i < rects; i++) |
277 |
✗✓ |
43 |
if ((h->rects[i]->flags & AV_SUBTITLE_FLAG_FORCED) != 0) { |
278 |
|
|
forced = 1; |
279 |
|
|
break; |
280 |
|
|
} |
281 |
|
|
|
282 |
|
|
#if FF_API_AVPICTURE |
283 |
|
|
FF_DISABLE_DEPRECATION_WARNINGS |
284 |
✓✓ |
86 |
for (i = 0; i < rects; i++) |
285 |
✗✓ |
43 |
if (!h->rects[i]->data[0]) { |
286 |
|
|
AVSubtitleRect *rect = h->rects[i]; |
287 |
|
|
int j; |
288 |
|
|
for (j = 0; j < 4; j++) { |
289 |
|
|
rect->data[j] = rect->pict.data[j]; |
290 |
|
|
rect->linesize[j] = rect->pict.linesize[j]; |
291 |
|
|
} |
292 |
|
|
} |
293 |
|
|
FF_ENABLE_DEPRECATION_WARNINGS |
294 |
|
|
#endif |
295 |
|
|
|
296 |
|
43 |
vrect = *h->rects[0]; |
297 |
|
|
|
298 |
✗✓ |
43 |
if (rects > 1) { |
299 |
|
|
/* DVD subtitles can have only one rectangle: build a virtual |
300 |
|
|
rectangle containing all actual rectangles. |
301 |
|
|
The data of the rectangles will be copied later, when the palette |
302 |
|
|
is decided, because the rectangles may have different palettes. */ |
303 |
|
|
int xmin = h->rects[0]->x, xmax = xmin + h->rects[0]->w; |
304 |
|
|
int ymin = h->rects[0]->y, ymax = ymin + h->rects[0]->h; |
305 |
|
|
for (i = 1; i < rects; i++) { |
306 |
|
|
xmin = FFMIN(xmin, h->rects[i]->x); |
307 |
|
|
ymin = FFMIN(ymin, h->rects[i]->y); |
308 |
|
|
xmax = FFMAX(xmax, h->rects[i]->x + h->rects[i]->w); |
309 |
|
|
ymax = FFMAX(ymax, h->rects[i]->y + h->rects[i]->h); |
310 |
|
|
} |
311 |
|
|
vrect.x = xmin; |
312 |
|
|
vrect.y = ymin; |
313 |
|
|
vrect.w = xmax - xmin; |
314 |
|
|
vrect.h = ymax - ymin; |
315 |
|
|
if ((ret = av_image_check_size(vrect.w, vrect.h, 0, avctx)) < 0) |
316 |
|
|
return ret; |
317 |
|
|
|
318 |
|
|
/* Count pixels outside the virtual rectangle as transparent */ |
319 |
|
|
global_palette_hits[0] = vrect.w * vrect.h; |
320 |
|
|
for (i = 0; i < rects; i++) |
321 |
|
|
global_palette_hits[0] -= h->rects[i]->w * h->rects[i]->h; |
322 |
|
|
} |
323 |
|
|
|
324 |
✓✓ |
86 |
for (i = 0; i < rects; i++) |
325 |
|
43 |
count_colors(avctx, global_palette_hits, h->rects[i]); |
326 |
|
43 |
select_palette(avctx, out_palette, out_alpha, global_palette_hits); |
327 |
|
|
|
328 |
✗✓ |
43 |
if (rects > 1) { |
329 |
|
|
if (!(vrect_data = av_calloc(vrect.w, vrect.h))) |
330 |
|
|
return AVERROR(ENOMEM); |
331 |
|
|
vrect.data [0] = vrect_data; |
332 |
|
|
vrect.linesize[0] = vrect.w; |
333 |
|
|
for (i = 0; i < rects; i++) { |
334 |
|
|
build_color_map(avctx, cmap, (uint32_t *)h->rects[i]->data[1], |
335 |
|
|
out_palette, out_alpha); |
336 |
|
|
copy_rectangle(&vrect, h->rects[i], cmap); |
337 |
|
|
} |
338 |
|
|
for (i = 0; i < 4; i++) |
339 |
|
|
cmap[i] = i; |
340 |
|
|
} else { |
341 |
|
43 |
build_color_map(avctx, cmap, (uint32_t *)h->rects[0]->data[1], |
342 |
|
|
out_palette, out_alpha); |
343 |
|
|
} |
344 |
|
|
|
345 |
|
43 |
av_log(avctx, AV_LOG_DEBUG, "Selected palette:"); |
346 |
✓✓ |
215 |
for (i = 0; i < 4; i++) |
347 |
|
172 |
av_log(avctx, AV_LOG_DEBUG, " 0x%06"PRIx32"@@%02x (0x%x,0x%x)", |
348 |
|
172 |
dvdc->global_palette[out_palette[i]], out_alpha[i], |
349 |
|
172 |
out_palette[i], out_alpha[i] >> 4); |
350 |
|
43 |
av_log(avctx, AV_LOG_DEBUG, "\n"); |
351 |
|
|
|
352 |
|
|
// encode data block |
353 |
|
43 |
q = outbuf + 4; |
354 |
|
43 |
offset1 = q - outbuf; |
355 |
|
|
// worst case memory requirement: 1 nibble per pixel.. |
356 |
✗✓ |
43 |
if ((q - outbuf) + vrect.w * vrect.h / 2 + 17 + 21 > outbuf_size) { |
357 |
|
|
av_log(NULL, AV_LOG_ERROR, "dvd_subtitle too big\n"); |
358 |
|
|
ret = AVERROR_BUFFER_TOO_SMALL; |
359 |
|
|
goto fail; |
360 |
|
|
} |
361 |
|
43 |
dvd_encode_rle(&q, vrect.data[0], vrect.w * 2, |
362 |
|
43 |
vrect.w, (vrect.h + 1) >> 1, cmap); |
363 |
|
43 |
offset2 = q - outbuf; |
364 |
|
43 |
dvd_encode_rle(&q, vrect.data[0] + vrect.w, vrect.w * 2, |
365 |
|
43 |
vrect.w, vrect.h >> 1, cmap); |
366 |
|
|
|
367 |
✗✓✗✗
|
43 |
if (dvdc->even_rows_fix && (vrect.h & 1)) { |
368 |
|
|
// Work-around for some players that want the height to be even. |
369 |
|
|
vrect.h++; |
370 |
|
|
*q++ = 0x00; // 0x00 0x00 == empty row, i.e. fully transparent |
371 |
|
|
*q++ = 0x00; |
372 |
|
|
} |
373 |
|
|
|
374 |
|
|
// set data packet size |
375 |
|
43 |
qq = outbuf + 2; |
376 |
|
43 |
bytestream_put_be16(&qq, q - outbuf); |
377 |
|
|
|
378 |
|
|
// send start display command |
379 |
|
43 |
bytestream_put_be16(&q, (h->start_display_time*90) >> 10); |
380 |
|
43 |
bytestream_put_be16(&q, (q - outbuf) /*- 2 */ + 8 + 12 + 2); |
381 |
|
43 |
*q++ = 0x03; // palette - 4 nibbles |
382 |
|
43 |
*q++ = (out_palette[3] << 4) | out_palette[2]; |
383 |
|
43 |
*q++ = (out_palette[1] << 4) | out_palette[0]; |
384 |
|
43 |
*q++ = 0x04; // alpha - 4 nibbles |
385 |
|
43 |
*q++ = (out_alpha[3] & 0xF0) | (out_alpha[2] >> 4); |
386 |
|
43 |
*q++ = (out_alpha[1] & 0xF0) | (out_alpha[0] >> 4); |
387 |
|
|
|
388 |
|
|
// 12 bytes per rect |
389 |
|
43 |
x2 = vrect.x + vrect.w - 1; |
390 |
|
43 |
y2 = vrect.y + vrect.h - 1; |
391 |
|
|
|
392 |
|
43 |
*q++ = 0x05; |
393 |
|
|
// x1 x2 -> 6 nibbles |
394 |
|
43 |
*q++ = vrect.x >> 4; |
395 |
|
43 |
*q++ = (vrect.x << 4) | ((x2 >> 8) & 0xf); |
396 |
|
43 |
*q++ = x2; |
397 |
|
|
// y1 y2 -> 6 nibbles |
398 |
|
43 |
*q++ = vrect.y >> 4; |
399 |
|
43 |
*q++ = (vrect.y << 4) | ((y2 >> 8) & 0xf); |
400 |
|
43 |
*q++ = y2; |
401 |
|
|
|
402 |
|
43 |
*q++ = 0x06; |
403 |
|
|
// offset1, offset2 |
404 |
|
43 |
bytestream_put_be16(&q, offset1); |
405 |
|
43 |
bytestream_put_be16(&q, offset2); |
406 |
|
|
|
407 |
|
43 |
*q++ = forced ? 0x00 : 0x01; // start command |
408 |
|
43 |
*q++ = 0xff; // terminating command |
409 |
|
|
|
410 |
|
|
// send stop display command last |
411 |
|
43 |
bytestream_put_be16(&q, (h->end_display_time*90) >> 10); |
412 |
|
43 |
bytestream_put_be16(&q, (q - outbuf) - 2 /*+ 4*/); |
413 |
|
43 |
*q++ = 0x02; // set end |
414 |
|
43 |
*q++ = 0xff; // terminating command |
415 |
|
|
|
416 |
|
43 |
qq = outbuf; |
417 |
|
43 |
bytestream_put_be16(&qq, q - outbuf); |
418 |
|
|
|
419 |
|
43 |
av_log(NULL, AV_LOG_DEBUG, "subtitle_packet size=%"PTRDIFF_SPECIFIER"\n", q - outbuf); |
420 |
|
43 |
ret = q - outbuf; |
421 |
|
|
|
422 |
|
43 |
fail: |
423 |
|
43 |
av_free(vrect_data); |
424 |
|
43 |
return ret; |
425 |
|
|
} |
426 |
|
|
|
427 |
|
1 |
static int dvdsub_init(AVCodecContext *avctx) |
428 |
|
|
{ |
429 |
|
1 |
DVDSubtitleContext *dvdc = avctx->priv_data; |
430 |
|
|
static const uint32_t default_palette[16] = { |
431 |
|
|
0x000000, 0x0000FF, 0x00FF00, 0xFF0000, |
432 |
|
|
0xFFFF00, 0xFF00FF, 0x00FFFF, 0xFFFFFF, |
433 |
|
|
0x808000, 0x8080FF, 0x800080, 0x80FF80, |
434 |
|
|
0x008080, 0xFF8080, 0x555555, 0xAAAAAA, |
435 |
|
|
}; |
436 |
|
|
AVBPrint extradata; |
437 |
|
|
int i, ret; |
438 |
|
|
|
439 |
|
|
av_assert0(sizeof(dvdc->global_palette) == sizeof(default_palette)); |
440 |
✗✓ |
1 |
if (dvdc->palette_str) { |
441 |
|
|
ff_dvdsub_parse_palette(dvdc->global_palette, dvdc->palette_str); |
442 |
|
|
} else { |
443 |
|
1 |
memcpy(dvdc->global_palette, default_palette, sizeof(dvdc->global_palette)); |
444 |
|
|
} |
445 |
|
|
|
446 |
|
1 |
av_bprint_init(&extradata, 0, AV_BPRINT_SIZE_AUTOMATIC); |
447 |
✓✗✓✗
|
1 |
if (avctx->width && avctx->height) |
448 |
|
1 |
av_bprintf(&extradata, "size: %dx%d\n", avctx->width, avctx->height); |
449 |
|
1 |
av_bprintf(&extradata, "palette:"); |
450 |
✓✓ |
17 |
for (i = 0; i < 16; i++) |
451 |
✓✓ |
16 |
av_bprintf(&extradata, " %06"PRIx32"%c", |
452 |
|
16 |
dvdc->global_palette[i] & 0xFFFFFF, i < 15 ? ',' : '\n'); |
453 |
|
|
|
454 |
|
1 |
ret = avpriv_bprint_to_extradata(avctx, &extradata); |
455 |
✗✓ |
1 |
if (ret < 0) |
456 |
|
|
return ret; |
457 |
|
|
|
458 |
|
1 |
return 0; |
459 |
|
|
} |
460 |
|
|
|
461 |
|
43 |
static int dvdsub_encode(AVCodecContext *avctx, |
462 |
|
|
unsigned char *buf, int buf_size, |
463 |
|
|
const AVSubtitle *sub) |
464 |
|
|
{ |
465 |
|
|
//DVDSubtitleContext *s = avctx->priv_data; |
466 |
|
|
int ret; |
467 |
|
|
|
468 |
|
43 |
ret = encode_dvd_subtitles(avctx, buf, buf_size, sub); |
469 |
|
43 |
return ret; |
470 |
|
|
} |
471 |
|
|
|
472 |
|
|
#define OFFSET(x) offsetof(DVDSubtitleContext, x) |
473 |
|
|
#define SE AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM |
474 |
|
|
static const AVOption options[] = { |
475 |
|
|
{"palette", "set the global palette", OFFSET(palette_str), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, SE }, |
476 |
|
|
{"even_rows_fix", "Make number of rows even (workaround for some players)", OFFSET(even_rows_fix), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, SE}, |
477 |
|
|
{ NULL }, |
478 |
|
|
}; |
479 |
|
|
|
480 |
|
|
static const AVClass dvdsubenc_class = { |
481 |
|
|
.class_name = "VOBSUB subtitle encoder", |
482 |
|
|
.item_name = av_default_item_name, |
483 |
|
|
.option = options, |
484 |
|
|
.version = LIBAVUTIL_VERSION_INT, |
485 |
|
|
}; |
486 |
|
|
|
487 |
|
|
AVCodec ff_dvdsub_encoder = { |
488 |
|
|
.name = "dvdsub", |
489 |
|
|
.long_name = NULL_IF_CONFIG_SMALL("DVD subtitles"), |
490 |
|
|
.type = AVMEDIA_TYPE_SUBTITLE, |
491 |
|
|
.id = AV_CODEC_ID_DVD_SUBTITLE, |
492 |
|
|
.init = dvdsub_init, |
493 |
|
|
.encode_sub = dvdsub_encode, |
494 |
|
|
.priv_class = &dvdsubenc_class, |
495 |
|
|
.priv_data_size = sizeof(DVDSubtitleContext), |
496 |
|
|
}; |