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/* |
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* Cinepak Video Decoder |
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* Copyright (C) 2003 The FFmpeg project |
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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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/** |
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* @file |
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* Cinepak video decoder |
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* @author Ewald Snel <ewald@rambo.its.tudelft.nl> |
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* |
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* @see For more information on the Cinepak algorithm, visit: |
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* http://www.csse.monash.edu.au/~timf/ |
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* @see For more information on the quirky data inside Sega FILM/CPK files, visit: |
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* http://wiki.multimedia.cx/index.php?title=Sega_FILM |
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* |
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* Cinepak colorspace support (c) 2013 Rl, Aetey Global Technologies AB |
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* @author Cinepak colorspace, Rl, Aetey Global Technologies AB |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include "libavutil/common.h" |
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#include "libavutil/intreadwrite.h" |
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#include "avcodec.h" |
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#include "internal.h" |
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typedef uint8_t cvid_codebook[12]; |
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#define MAX_STRIPS 32 |
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typedef struct cvid_strip { |
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uint16_t id; |
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uint16_t x1, y1; |
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uint16_t x2, y2; |
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cvid_codebook v4_codebook[256]; |
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cvid_codebook v1_codebook[256]; |
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} cvid_strip; |
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typedef struct CinepakContext { |
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AVCodecContext *avctx; |
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AVFrame *frame; |
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const unsigned char *data; |
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int size; |
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int width, height; |
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int palette_video; |
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cvid_strip strips[MAX_STRIPS]; |
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int sega_film_skip_bytes; |
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uint32_t pal[256]; |
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} CinepakContext; |
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2070 |
static void cinepak_decode_codebook (cvid_codebook *codebook, |
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int chunk_id, int size, const uint8_t *data) |
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{ |
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2070 |
const uint8_t *eod = (data + size); |
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uint32_t flag, mask; |
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int i, n; |
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uint8_t *p; |
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/* check if this chunk contains 4- or 6-element vectors */ |
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✓✓ |
2070 |
n = (chunk_id & 0x04) ? 4 : 6; |
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2070 |
flag = 0; |
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2070 |
mask = 0; |
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2070 |
p = codebook[0]; |
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✓✓ |
376233 |
for (i=0; i < 256; i++) { |
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✓✓✓✓
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374868 |
if ((chunk_id & 0x01) && !(mask >>= 1)) { |
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✓✓ |
6919 |
if ((data + 4) > eod) |
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break; |
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6792 |
flag = AV_RB32 (data); |
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6792 |
data += 4; |
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6792 |
mask = 0x80000000; |
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} |
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✓✓✓✓
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608550 |
if (!(chunk_id & 0x01) || (flag & mask)) { |
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int k, kk; |
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✓✓ |
234387 |
if ((data + n) > eod) |
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break; |
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✓✓ |
1169045 |
for (k = 0; k < 4; ++k) { |
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935236 |
int r = *data++; |
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✓✓ |
3740944 |
for (kk = 0; kk < 3; ++kk) |
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2805708 |
*p++ = r; |
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} |
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✓✓ |
233809 |
if (n == 6) { |
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int r, g, b, u, v; |
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211154 |
u = *(int8_t *)data++; |
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211154 |
v = *(int8_t *)data++; |
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211154 |
p -= 12; |
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✓✓ |
1055770 |
for(k=0; k<4; ++k) { |
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844616 |
r = *p++ + v*2; |
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844616 |
g = *p++ - (u/2) - v; |
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844616 |
b = *p + u*2; |
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844616 |
p -= 2; |
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844616 |
*p++ = av_clip_uint8(r); |
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844616 |
*p++ = av_clip_uint8(g); |
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844616 |
*p++ = av_clip_uint8(b); |
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} |
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} |
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} else { |
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140354 |
p += 12; |
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} |
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} |
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2070 |
} |
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1035 |
static int cinepak_decode_vectors (CinepakContext *s, cvid_strip *strip, |
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int chunk_id, int size, const uint8_t *data) |
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{ |
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1035 |
const uint8_t *eod = (data + size); |
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uint32_t flag, mask; |
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uint8_t *cb0, *cb1, *cb2, *cb3; |
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int x, y; |
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char *ip0, *ip1, *ip2, *ip3; |
140 |
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1035 |
flag = 0; |
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1035 |
mask = 0; |
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✓✓ |
19017 |
for (y=strip->y1; y < strip->y2; y+=4) { |
145 |
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/* take care of y dimension not being multiple of 4, such streams exist */ |
147 |
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35968 |
ip0 = ip1 = ip2 = ip3 = s->frame->data[0] + |
148 |
✓✓ |
17984 |
(s->palette_video?strip->x1:strip->x1*3) + (y * s->frame->linesize[0]); |
149 |
✓✗ |
17984 |
if(s->avctx->height - y > 1) { |
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17984 |
ip1 = ip0 + s->frame->linesize[0]; |
151 |
✓✗ |
17984 |
if(s->avctx->height - y > 2) { |
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17984 |
ip2 = ip1 + s->frame->linesize[0]; |
153 |
✓✓ |
17984 |
if(s->avctx->height - y > 3) { |
154 |
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17754 |
ip3 = ip2 + s->frame->linesize[0]; |
155 |
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} |
156 |
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} |
157 |
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} |
158 |
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/* to get the correct picture for not-multiple-of-4 cases let us fill each |
159 |
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* block from the bottom up, thus possibly overwriting the bottommost line |
160 |
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* more than once but ending with the correct data in place |
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* (instead of in-loop checking) */ |
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163 |
✓✓ |
1132191 |
for (x=strip->x1; x < strip->x2; x+=4) { |
164 |
✓✓✓✓
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1114209 |
if ((chunk_id & 0x01) && !(mask >>= 1)) { |
165 |
✗✓ |
27974 |
if ((data + 4) > eod) |
166 |
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return AVERROR_INVALIDDATA; |
167 |
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168 |
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27974 |
flag = AV_RB32 (data); |
169 |
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27974 |
data += 4; |
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27974 |
mask = 0x80000000; |
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} |
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✓✓✓✓
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1114209 |
if (!(chunk_id & 0x01) || (flag & mask)) { |
174 |
✓✓✓✓
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785585 |
if (!(chunk_id & 0x02) && !(mask >>= 1)) { |
175 |
✗✓ |
23469 |
if ((data + 4) > eod) |
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return AVERROR_INVALIDDATA; |
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178 |
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23469 |
flag = AV_RB32 (data); |
179 |
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23469 |
data += 4; |
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23469 |
mask = 0x80000000; |
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} |
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183 |
✓✓✓✓
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1041043 |
if ((chunk_id & 0x02) || (~flag & mask)) { |
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uint8_t *p; |
185 |
✗✓ |
255458 |
if (data >= eod) |
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return AVERROR_INVALIDDATA; |
187 |
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188 |
|
255458 |
p = strip->v1_codebook[*data++]; |
189 |
✗✓ |
255458 |
if (s->palette_video) { |
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ip3[0] = ip3[1] = ip2[0] = ip2[1] = p[6]; |
191 |
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ip3[2] = ip3[3] = ip2[2] = ip2[3] = p[9]; |
192 |
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ip1[0] = ip1[1] = ip0[0] = ip0[1] = p[0]; |
193 |
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ip1[2] = ip1[3] = ip0[2] = ip0[3] = p[3]; |
194 |
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} else { |
195 |
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255458 |
p += 6; |
196 |
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255458 |
memcpy(ip3 + 0, p, 3); memcpy(ip3 + 3, p, 3); |
197 |
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255458 |
memcpy(ip2 + 0, p, 3); memcpy(ip2 + 3, p, 3); |
198 |
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255458 |
p += 3; /* ... + 9 */ |
199 |
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255458 |
memcpy(ip3 + 6, p, 3); memcpy(ip3 + 9, p, 3); |
200 |
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255458 |
memcpy(ip2 + 6, p, 3); memcpy(ip2 + 9, p, 3); |
201 |
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255458 |
p -= 9; /* ... + 0 */ |
202 |
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255458 |
memcpy(ip1 + 0, p, 3); memcpy(ip1 + 3, p, 3); |
203 |
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255458 |
memcpy(ip0 + 0, p, 3); memcpy(ip0 + 3, p, 3); |
204 |
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255458 |
p += 3; /* ... + 3 */ |
205 |
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255458 |
memcpy(ip1 + 6, p, 3); memcpy(ip1 + 9, p, 3); |
206 |
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255458 |
memcpy(ip0 + 6, p, 3); memcpy(ip0 + 9, p, 3); |
207 |
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} |
208 |
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|
209 |
✓✗ |
530127 |
} else if (flag & mask) { |
210 |
✓✓ |
530127 |
if ((data + 4) > eod) |
211 |
|
2 |
return AVERROR_INVALIDDATA; |
212 |
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|
213 |
|
530125 |
cb0 = strip->v4_codebook[*data++]; |
214 |
|
530125 |
cb1 = strip->v4_codebook[*data++]; |
215 |
|
530125 |
cb2 = strip->v4_codebook[*data++]; |
216 |
|
530125 |
cb3 = strip->v4_codebook[*data++]; |
217 |
✓✓ |
530125 |
if (s->palette_video) { |
218 |
|
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uint8_t *p; |
219 |
|
66297 |
p = ip3; |
220 |
|
66297 |
*p++ = cb2[6]; |
221 |
|
66297 |
*p++ = cb2[9]; |
222 |
|
66297 |
*p++ = cb3[6]; |
223 |
|
66297 |
*p = cb3[9]; |
224 |
|
66297 |
p = ip2; |
225 |
|
66297 |
*p++ = cb2[0]; |
226 |
|
66297 |
*p++ = cb2[3]; |
227 |
|
66297 |
*p++ = cb3[0]; |
228 |
|
66297 |
*p = cb3[3]; |
229 |
|
66297 |
p = ip1; |
230 |
|
66297 |
*p++ = cb0[6]; |
231 |
|
66297 |
*p++ = cb0[9]; |
232 |
|
66297 |
*p++ = cb1[6]; |
233 |
|
66297 |
*p = cb1[9]; |
234 |
|
66297 |
p = ip0; |
235 |
|
66297 |
*p++ = cb0[0]; |
236 |
|
66297 |
*p++ = cb0[3]; |
237 |
|
66297 |
*p++ = cb1[0]; |
238 |
|
66297 |
*p = cb1[3]; |
239 |
|
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} else { |
240 |
|
463828 |
memcpy(ip3 + 0, cb2 + 6, 6); |
241 |
|
463828 |
memcpy(ip3 + 6, cb3 + 6, 6); |
242 |
|
463828 |
memcpy(ip2 + 0, cb2 + 0, 6); |
243 |
|
463828 |
memcpy(ip2 + 6, cb3 + 0, 6); |
244 |
|
463828 |
memcpy(ip1 + 0, cb0 + 6, 6); |
245 |
|
463828 |
memcpy(ip1 + 6, cb1 + 6, 6); |
246 |
|
463828 |
memcpy(ip0 + 0, cb0 + 0, 6); |
247 |
|
463828 |
memcpy(ip0 + 6, cb1 + 0, 6); |
248 |
|
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} |
249 |
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|
250 |
|
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} |
251 |
|
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} |
252 |
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|
253 |
✓✓ |
1114207 |
if (s->palette_video) { |
254 |
|
66297 |
ip0 += 4; ip1 += 4; |
255 |
|
66297 |
ip2 += 4; ip3 += 4; |
256 |
|
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} else { |
257 |
|
1047910 |
ip0 += 12; ip1 += 12; |
258 |
|
1047910 |
ip2 += 12; ip3 += 12; |
259 |
|
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} |
260 |
|
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} |
261 |
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} |
262 |
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263 |
|
1033 |
return 0; |
264 |
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} |
265 |
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266 |
|
1035 |
static int cinepak_decode_strip (CinepakContext *s, |
267 |
|
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cvid_strip *strip, const uint8_t *data, int size) |
268 |
|
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{ |
269 |
|
1035 |
const uint8_t *eod = (data + size); |
270 |
|
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int chunk_id, chunk_size; |
271 |
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|
272 |
|
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/* coordinate sanity checks */ |
273 |
✓✗ |
1035 |
if (strip->x2 > s->width || |
274 |
✓✗ |
1035 |
strip->y2 > s->height || |
275 |
✓✗✗✓
|
1035 |
strip->x1 >= strip->x2 || strip->y1 >= strip->y2) |
276 |
|
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return AVERROR_INVALIDDATA; |
277 |
|
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|
278 |
✓✗ |
3105 |
while ((data + 4) <= eod) { |
279 |
|
3105 |
chunk_id = data[0]; |
280 |
|
3105 |
chunk_size = AV_RB24 (&data[1]) - 4; |
281 |
✗✓ |
3105 |
if(chunk_size < 0) |
282 |
|
|
return AVERROR_INVALIDDATA; |
283 |
|
|
|
284 |
|
3105 |
data += 4; |
285 |
✓✓ |
3105 |
chunk_size = ((data + chunk_size) > eod) ? (eod - data) : chunk_size; |
286 |
|
|
|
287 |
✓✓✓✗
|
3105 |
switch (chunk_id) { |
288 |
|
|
|
289 |
|
1035 |
case 0x20: |
290 |
|
|
case 0x21: |
291 |
|
|
case 0x24: |
292 |
|
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case 0x25: |
293 |
|
1035 |
cinepak_decode_codebook (strip->v4_codebook, chunk_id, |
294 |
|
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chunk_size, data); |
295 |
|
1035 |
break; |
296 |
|
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|
297 |
|
1035 |
case 0x22: |
298 |
|
|
case 0x23: |
299 |
|
|
case 0x26: |
300 |
|
|
case 0x27: |
301 |
|
1035 |
cinepak_decode_codebook (strip->v1_codebook, chunk_id, |
302 |
|
|
chunk_size, data); |
303 |
|
1035 |
break; |
304 |
|
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|
305 |
|
1035 |
case 0x30: |
306 |
|
|
case 0x31: |
307 |
|
|
case 0x32: |
308 |
|
1035 |
return cinepak_decode_vectors (s, strip, chunk_id, |
309 |
|
|
chunk_size, data); |
310 |
|
|
} |
311 |
|
|
|
312 |
|
2070 |
data += chunk_size; |
313 |
|
|
} |
314 |
|
|
|
315 |
|
|
return AVERROR_INVALIDDATA; |
316 |
|
|
} |
317 |
|
|
|
318 |
|
547 |
static int cinepak_predecode_check (CinepakContext *s) |
319 |
|
|
{ |
320 |
|
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int num_strips; |
321 |
|
|
int encoded_buf_size; |
322 |
|
|
|
323 |
|
547 |
num_strips = AV_RB16 (&s->data[8]); |
324 |
|
547 |
encoded_buf_size = AV_RB24(&s->data[1]); |
325 |
|
|
|
326 |
✗✓ |
547 |
if (s->size < encoded_buf_size * (int64_t)(100 - s->avctx->discard_damaged_percentage) / 100) |
327 |
|
|
return AVERROR_INVALIDDATA; |
328 |
|
|
|
329 |
|
|
/* if this is the first frame, check for deviant Sega FILM data */ |
330 |
✓✓ |
547 |
if (s->sega_film_skip_bytes == -1) { |
331 |
✗✓ |
7 |
if (!encoded_buf_size) { |
332 |
|
|
avpriv_request_sample(s->avctx, "encoded_buf_size 0"); |
333 |
|
|
return AVERROR_PATCHWELCOME; |
334 |
|
|
} |
335 |
✓✓✓✗
|
7 |
if (encoded_buf_size != s->size && (s->size % encoded_buf_size) != 0) { |
336 |
|
|
/* If the encoded frame size differs from the frame size as indicated |
337 |
|
|
* by the container file, this data likely comes from a Sega FILM/CPK file. |
338 |
|
|
* If the frame header is followed by the bytes FE 00 00 06 00 00 then |
339 |
|
|
* this is probably one of the two known files that have 6 extra bytes |
340 |
|
|
* after the frame header. Else, assume 2 extra bytes. The container |
341 |
|
|
* size also cannot be a multiple of the encoded size. */ |
342 |
✓✗ |
1 |
if (s->size >= 16 && |
343 |
✗✓ |
1 |
(s->data[10] == 0xFE) && |
344 |
|
|
(s->data[11] == 0x00) && |
345 |
|
|
(s->data[12] == 0x00) && |
346 |
|
|
(s->data[13] == 0x06) && |
347 |
|
|
(s->data[14] == 0x00) && |
348 |
|
|
(s->data[15] == 0x00)) |
349 |
|
|
s->sega_film_skip_bytes = 6; |
350 |
|
|
else |
351 |
|
1 |
s->sega_film_skip_bytes = 2; |
352 |
|
|
} else |
353 |
|
6 |
s->sega_film_skip_bytes = 0; |
354 |
|
|
} |
355 |
|
|
|
356 |
✗✓ |
547 |
if (s->size < 10 + s->sega_film_skip_bytes + num_strips * 12) |
357 |
|
|
return AVERROR_INVALIDDATA; |
358 |
|
|
|
359 |
✓✗ |
547 |
if (num_strips) { |
360 |
|
547 |
const uint8_t *data = s->data + 10 + s->sega_film_skip_bytes; |
361 |
|
547 |
int strip_size = AV_RB24 (data + 1); |
362 |
✓✗✗✓
|
547 |
if (strip_size < 12 || strip_size > encoded_buf_size) |
363 |
|
|
return AVERROR_INVALIDDATA; |
364 |
|
|
} |
365 |
|
|
|
366 |
|
547 |
return 0; |
367 |
|
|
} |
368 |
|
|
|
369 |
|
547 |
static int cinepak_decode (CinepakContext *s) |
370 |
|
|
{ |
371 |
|
547 |
const uint8_t *eod = (s->data + s->size); |
372 |
|
|
int i, result, strip_size, frame_flags, num_strips; |
373 |
|
547 |
int y0 = 0; |
374 |
|
|
|
375 |
|
547 |
frame_flags = s->data[0]; |
376 |
|
547 |
num_strips = AV_RB16 (&s->data[8]); |
377 |
|
|
|
378 |
|
547 |
s->data += 10 + s->sega_film_skip_bytes; |
379 |
|
|
|
380 |
|
547 |
num_strips = FFMIN(num_strips, MAX_STRIPS); |
381 |
|
|
|
382 |
|
547 |
s->frame->key_frame = 0; |
383 |
|
|
|
384 |
✓✓ |
1580 |
for (i=0; i < num_strips; i++) { |
385 |
✗✓ |
1035 |
if ((s->data + 12) > eod) |
386 |
|
|
return AVERROR_INVALIDDATA; |
387 |
|
|
|
388 |
|
1035 |
s->strips[i].id = s->data[0]; |
389 |
|
|
/* zero y1 means "relative to the previous stripe" */ |
390 |
✓✗ |
1035 |
if (!(s->strips[i].y1 = AV_RB16 (&s->data[4]))) |
391 |
|
1035 |
s->strips[i].y2 = (s->strips[i].y1 = y0) + AV_RB16 (&s->data[8]); |
392 |
|
|
else |
393 |
|
|
s->strips[i].y2 = AV_RB16 (&s->data[8]); |
394 |
|
1035 |
s->strips[i].x1 = AV_RB16 (&s->data[6]); |
395 |
|
1035 |
s->strips[i].x2 = AV_RB16 (&s->data[10]); |
396 |
|
|
|
397 |
✓✓ |
1035 |
if (s->strips[i].id == 0x10) |
398 |
|
115 |
s->frame->key_frame = 1; |
399 |
|
|
|
400 |
|
1035 |
strip_size = AV_RB24 (&s->data[1]) - 12; |
401 |
✗✓ |
1035 |
if (strip_size < 0) |
402 |
|
|
return AVERROR_INVALIDDATA; |
403 |
|
1035 |
s->data += 12; |
404 |
✓✓ |
1035 |
strip_size = ((s->data + strip_size) > eod) ? (eod - s->data) : strip_size; |
405 |
|
|
|
406 |
✓✓✓✓
|
1035 |
if ((i > 0) && !(frame_flags & 0x01)) { |
407 |
|
49 |
memcpy (s->strips[i].v4_codebook, s->strips[i-1].v4_codebook, |
408 |
|
|
sizeof(s->strips[i].v4_codebook)); |
409 |
|
49 |
memcpy (s->strips[i].v1_codebook, s->strips[i-1].v1_codebook, |
410 |
|
|
sizeof(s->strips[i].v1_codebook)); |
411 |
|
|
} |
412 |
|
|
|
413 |
|
1035 |
result = cinepak_decode_strip (s, &s->strips[i], s->data, strip_size); |
414 |
|
|
|
415 |
✓✓ |
1035 |
if (result != 0) |
416 |
|
2 |
return result; |
417 |
|
|
|
418 |
|
1033 |
s->data += strip_size; |
419 |
|
1033 |
y0 = s->strips[i].y2; |
420 |
|
|
} |
421 |
|
545 |
return 0; |
422 |
|
|
} |
423 |
|
|
|
424 |
|
14 |
static av_cold int cinepak_decode_init(AVCodecContext *avctx) |
425 |
|
|
{ |
426 |
|
14 |
CinepakContext *s = avctx->priv_data; |
427 |
|
|
|
428 |
|
14 |
s->avctx = avctx; |
429 |
|
14 |
s->width = (avctx->width + 3) & ~3; |
430 |
|
14 |
s->height = (avctx->height + 3) & ~3; |
431 |
|
|
|
432 |
|
14 |
s->sega_film_skip_bytes = -1; /* uninitialized state */ |
433 |
|
|
|
434 |
|
|
// check for paletted data |
435 |
✓✓ |
14 |
if (avctx->bits_per_coded_sample != 8) { |
436 |
|
12 |
s->palette_video = 0; |
437 |
|
12 |
avctx->pix_fmt = AV_PIX_FMT_RGB24; |
438 |
|
|
} else { |
439 |
|
2 |
s->palette_video = 1; |
440 |
|
2 |
avctx->pix_fmt = AV_PIX_FMT_PAL8; |
441 |
|
|
} |
442 |
|
|
|
443 |
|
14 |
s->frame = av_frame_alloc(); |
444 |
✗✓ |
14 |
if (!s->frame) |
445 |
|
|
return AVERROR(ENOMEM); |
446 |
|
|
|
447 |
|
14 |
return 0; |
448 |
|
|
} |
449 |
|
|
|
450 |
|
547 |
static int cinepak_decode_frame(AVCodecContext *avctx, |
451 |
|
|
void *data, int *got_frame, |
452 |
|
|
AVPacket *avpkt) |
453 |
|
|
{ |
454 |
|
547 |
const uint8_t *buf = avpkt->data; |
455 |
|
547 |
int ret = 0, buf_size = avpkt->size; |
456 |
|
547 |
CinepakContext *s = avctx->priv_data; |
457 |
|
|
int num_strips; |
458 |
|
|
|
459 |
|
547 |
s->data = buf; |
460 |
|
547 |
s->size = buf_size; |
461 |
|
|
|
462 |
✗✓ |
547 |
if (s->size < 10) |
463 |
|
|
return AVERROR_INVALIDDATA; |
464 |
|
|
|
465 |
|
547 |
num_strips = AV_RB16 (&s->data[8]); |
466 |
|
|
|
467 |
|
|
//Empty frame, do not waste time |
468 |
✗✓✗✗ ✗✗ |
547 |
if (!num_strips && (!s->palette_video || !av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, NULL))) |
469 |
|
|
return buf_size; |
470 |
|
|
|
471 |
✗✓ |
547 |
if ((ret = cinepak_predecode_check(s)) < 0) { |
472 |
|
|
av_log(avctx, AV_LOG_ERROR, "cinepak_predecode_check failed\n"); |
473 |
|
|
return ret; |
474 |
|
|
} |
475 |
|
|
|
476 |
✗✓ |
547 |
if ((ret = ff_reget_buffer(avctx, s->frame, 0)) < 0) |
477 |
|
|
return ret; |
478 |
|
|
|
479 |
✓✓ |
547 |
if (s->palette_video) { |
480 |
|
|
int size; |
481 |
|
56 |
const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, &size); |
482 |
✓✓✓✗
|
56 |
if (pal && size == AVPALETTE_SIZE) { |
483 |
|
1 |
s->frame->palette_has_changed = 1; |
484 |
|
1 |
memcpy(s->pal, pal, AVPALETTE_SIZE); |
485 |
✗✓ |
55 |
} else if (pal) { |
486 |
|
|
av_log(avctx, AV_LOG_ERROR, "Palette size %d is wrong\n", size); |
487 |
|
|
} |
488 |
|
|
} |
489 |
|
|
|
490 |
✓✓ |
547 |
if ((ret = cinepak_decode(s)) < 0) { |
491 |
|
2 |
av_log(avctx, AV_LOG_ERROR, "cinepak_decode failed\n"); |
492 |
|
|
} |
493 |
|
|
|
494 |
✓✓ |
547 |
if (s->palette_video) |
495 |
|
56 |
memcpy (s->frame->data[1], s->pal, AVPALETTE_SIZE); |
496 |
|
|
|
497 |
✗✓ |
547 |
if ((ret = av_frame_ref(data, s->frame)) < 0) |
498 |
|
|
return ret; |
499 |
|
|
|
500 |
|
547 |
*got_frame = 1; |
501 |
|
|
|
502 |
|
|
/* report that the buffer was completely consumed */ |
503 |
|
547 |
return buf_size; |
504 |
|
|
} |
505 |
|
|
|
506 |
|
14 |
static av_cold int cinepak_decode_end(AVCodecContext *avctx) |
507 |
|
|
{ |
508 |
|
14 |
CinepakContext *s = avctx->priv_data; |
509 |
|
|
|
510 |
|
14 |
av_frame_free(&s->frame); |
511 |
|
|
|
512 |
|
14 |
return 0; |
513 |
|
|
} |
514 |
|
|
|
515 |
|
|
AVCodec ff_cinepak_decoder = { |
516 |
|
|
.name = "cinepak", |
517 |
|
|
.long_name = NULL_IF_CONFIG_SMALL("Cinepak"), |
518 |
|
|
.type = AVMEDIA_TYPE_VIDEO, |
519 |
|
|
.id = AV_CODEC_ID_CINEPAK, |
520 |
|
|
.priv_data_size = sizeof(CinepakContext), |
521 |
|
|
.init = cinepak_decode_init, |
522 |
|
|
.close = cinepak_decode_end, |
523 |
|
|
.decode = cinepak_decode_frame, |
524 |
|
|
.capabilities = AV_CODEC_CAP_DR1, |
525 |
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
526 |
|
|
}; |