Directory: | ../../../ffmpeg/ |
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File: | src/libavcodec/ulti.c |
Date: | 2022-07-04 19:11:22 |
Exec | Total | Coverage | |
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Lines: | 201 | 257 | 78.2% |
Branches: | 66 | 87 | 75.9% |
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1 | /* | ||
2 | * IBM Ultimotion Video Decoder | ||
3 | * Copyright (C) 2004 Konstantin Shishkov | ||
4 | * | ||
5 | * This file is part of FFmpeg. | ||
6 | * | ||
7 | * FFmpeg is free software; you can redistribute it and/or | ||
8 | * modify it under the terms of the GNU Lesser General Public | ||
9 | * License as published by the Free Software Foundation; either | ||
10 | * version 2.1 of the License, or (at your option) any later version. | ||
11 | * | ||
12 | * FFmpeg is distributed in the hope that it will be useful, | ||
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
15 | * Lesser General Public License for more details. | ||
16 | * | ||
17 | * You should have received a copy of the GNU Lesser General Public | ||
18 | * License along with FFmpeg; if not, write to the Free Software | ||
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
20 | */ | ||
21 | |||
22 | /** | ||
23 | * @file | ||
24 | * IBM Ultimotion Video Decoder. | ||
25 | */ | ||
26 | |||
27 | #include <stdio.h> | ||
28 | #include <stdlib.h> | ||
29 | #include <string.h> | ||
30 | |||
31 | #include "avcodec.h" | ||
32 | #include "bytestream.h" | ||
33 | #include "codec_internal.h" | ||
34 | #include "internal.h" | ||
35 | |||
36 | #include "ulti_cb.h" | ||
37 | |||
38 | typedef struct UltimotionDecodeContext { | ||
39 | AVCodecContext *avctx; | ||
40 | int width, height, blocks; | ||
41 | AVFrame *frame; | ||
42 | const uint8_t *ulti_codebook; | ||
43 | GetByteContext gb; | ||
44 | } UltimotionDecodeContext; | ||
45 | |||
46 | 2 | static av_cold int ulti_decode_init(AVCodecContext *avctx) | |
47 | { | ||
48 | 2 | UltimotionDecodeContext *s = avctx->priv_data; | |
49 | |||
50 | 2 | s->avctx = avctx; | |
51 | 2 | s->width = avctx->width; | |
52 | 2 | s->height = avctx->height; | |
53 | 2 | s->blocks = (s->width / 8) * (s->height / 8); | |
54 |
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2 | if (s->blocks == 0) |
55 | ✗ | return AVERROR_INVALIDDATA; | |
56 | 2 | avctx->pix_fmt = AV_PIX_FMT_YUV410P; | |
57 | 2 | s->ulti_codebook = ulti_codebook; | |
58 | |||
59 | 2 | s->frame = av_frame_alloc(); | |
60 |
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2 | if (!s->frame) |
61 | ✗ | return AVERROR(ENOMEM); | |
62 | |||
63 | 2 | return 0; | |
64 | } | ||
65 | |||
66 | 2 | static av_cold int ulti_decode_end(AVCodecContext *avctx) | |
67 | { | ||
68 | 2 | UltimotionDecodeContext *s = avctx->priv_data; | |
69 | |||
70 | 2 | av_frame_free(&s->frame); | |
71 | |||
72 | 2 | return 0; | |
73 | } | ||
74 | |||
75 | static const int block_coords[8] = // 4x4 block coords in 8x8 superblock | ||
76 | { 0, 0, 0, 4, 4, 4, 4, 0}; | ||
77 | |||
78 | static const int angle_by_index[4] = { 0, 2, 6, 12}; | ||
79 | |||
80 | /* Lookup tables for luma and chroma - used by ulti_convert_yuv() */ | ||
81 | static const uint8_t ulti_lumas[64] = | ||
82 | { 0x10, 0x13, 0x17, 0x1A, 0x1E, 0x21, 0x25, 0x28, | ||
83 | 0x2C, 0x2F, 0x33, 0x36, 0x3A, 0x3D, 0x41, 0x44, | ||
84 | 0x48, 0x4B, 0x4F, 0x52, 0x56, 0x59, 0x5C, 0x60, | ||
85 | 0x63, 0x67, 0x6A, 0x6E, 0x71, 0x75, 0x78, 0x7C, | ||
86 | 0x7F, 0x83, 0x86, 0x8A, 0x8D, 0x91, 0x94, 0x98, | ||
87 | 0x9B, 0x9F, 0xA2, 0xA5, 0xA9, 0xAC, 0xB0, 0xB3, | ||
88 | 0xB7, 0xBA, 0xBE, 0xC1, 0xC5, 0xC8, 0xCC, 0xCF, | ||
89 | 0xD3, 0xD6, 0xDA, 0xDD, 0xE1, 0xE4, 0xE8, 0xEB}; | ||
90 | |||
91 | static const uint8_t ulti_chromas[16] = | ||
92 | { 0x60, 0x67, 0x6D, 0x73, 0x7A, 0x80, 0x86, 0x8D, | ||
93 | 0x93, 0x99, 0xA0, 0xA6, 0xAC, 0xB3, 0xB9, 0xC0}; | ||
94 | |||
95 | /* convert Ultimotion YUV block (sixteen 6-bit Y samples and | ||
96 | two 4-bit chroma samples) into standard YUV and put it into frame */ | ||
97 | 206695 | static void ulti_convert_yuv(AVFrame *frame, int x, int y, | |
98 | uint8_t *luma,int chroma) | ||
99 | { | ||
100 | uint8_t *y_plane, *cr_plane, *cb_plane; | ||
101 | int i; | ||
102 | |||
103 | 206695 | y_plane = frame->data[0] + x + y * frame->linesize[0]; | |
104 | 206695 | cr_plane = frame->data[1] + (x / 4) + (y / 4) * frame->linesize[1]; | |
105 | 206695 | cb_plane = frame->data[2] + (x / 4) + (y / 4) * frame->linesize[2]; | |
106 | |||
107 | 206695 | cr_plane[0] = ulti_chromas[chroma >> 4]; | |
108 | |||
109 | 206695 | cb_plane[0] = ulti_chromas[chroma & 0xF]; | |
110 | |||
111 | |||
112 |
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3513815 | for(i = 0; i < 16; i++){ |
113 | 3307120 | y_plane[i & 3] = ulti_lumas[luma[i]]; | |
114 |
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3307120 | if((i & 3) == 3) { //next row |
115 | 826780 | y_plane += frame->linesize[0]; | |
116 | } | ||
117 | } | ||
118 | 206695 | } | |
119 | |||
120 | /* generate block like in MS Video1 */ | ||
121 | 43140 | static void ulti_pattern(AVFrame *frame, int x, int y, | |
122 | int f0, int f1, int Y0, int Y1, int chroma) | ||
123 | { | ||
124 | uint8_t Luma[16]; | ||
125 | int mask, i; | ||
126 |
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388260 | for(mask = 0x80, i = 0; mask; mask >>= 1, i++) { |
127 |
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345120 | if(f0 & mask) |
128 | 146257 | Luma[i] = Y1; | |
129 | else | ||
130 | 198863 | Luma[i] = Y0; | |
131 | } | ||
132 | |||
133 |
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388260 | for(mask = 0x80, i = 8; mask; mask >>= 1, i++) { |
134 |
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345120 | if(f1 & mask) |
135 | 185919 | Luma[i] = Y1; | |
136 | else | ||
137 | 159201 | Luma[i] = Y0; | |
138 | } | ||
139 | |||
140 | 43140 | ulti_convert_yuv(frame, x, y, Luma, chroma); | |
141 | 43140 | } | |
142 | |||
143 | /* fill block with some gradient */ | ||
144 | 163555 | static void ulti_grad(AVFrame *frame, int x, int y, uint8_t *Y, int chroma, int angle) | |
145 | { | ||
146 | uint8_t Luma[16]; | ||
147 |
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163555 | if(angle & 8) { //reverse order |
148 | int t; | ||
149 | 56848 | angle &= 0x7; | |
150 | 56848 | t = Y[0]; | |
151 | 56848 | Y[0] = Y[3]; | |
152 | 56848 | Y[3] = t; | |
153 | 56848 | t = Y[1]; | |
154 | 56848 | Y[1] = Y[2]; | |
155 | 56848 | Y[2] = t; | |
156 | } | ||
157 |
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163555 | switch(angle){ |
158 | 44413 | case 0: | |
159 | 44413 | Luma[0] = Y[0]; Luma[1] = Y[1]; Luma[2] = Y[2]; Luma[3] = Y[3]; | |
160 | 44413 | Luma[4] = Y[0]; Luma[5] = Y[1]; Luma[6] = Y[2]; Luma[7] = Y[3]; | |
161 | 44413 | Luma[8] = Y[0]; Luma[9] = Y[1]; Luma[10] = Y[2]; Luma[11] = Y[3]; | |
162 | 44413 | Luma[12] = Y[0]; Luma[13] = Y[1]; Luma[14] = Y[2]; Luma[15] = Y[3]; | |
163 | 44413 | break; | |
164 | 4503 | case 1: | |
165 | 4503 | Luma[0] = Y[1]; Luma[1] = Y[2]; Luma[2] = Y[3]; Luma[3] = Y[3]; | |
166 | 4503 | Luma[4] = Y[0]; Luma[5] = Y[1]; Luma[6] = Y[2]; Luma[7] = Y[3]; | |
167 | 4503 | Luma[8] = Y[0]; Luma[9] = Y[1]; Luma[10] = Y[2]; Luma[11] = Y[3]; | |
168 | 4503 | Luma[12] = Y[0]; Luma[13] = Y[0]; Luma[14] = Y[1]; Luma[15] = Y[2]; | |
169 | 4503 | break; | |
170 | 8134 | case 2: | |
171 | 8134 | Luma[0] = Y[1]; Luma[1] = Y[2]; Luma[2] = Y[3]; Luma[3] = Y[3]; | |
172 | 8134 | Luma[4] = Y[1]; Luma[5] = Y[2]; Luma[6] = Y[2]; Luma[7] = Y[3]; | |
173 | 8134 | Luma[8] = Y[0]; Luma[9] = Y[1]; Luma[10] = Y[1]; Luma[11] = Y[2]; | |
174 | 8134 | Luma[12] = Y[0]; Luma[13] = Y[0]; Luma[14] = Y[1]; Luma[15] = Y[2]; | |
175 | 8134 | break; | |
176 | 8428 | case 3: | |
177 | 8428 | Luma[0] = Y[2]; Luma[1] = Y[3]; Luma[2] = Y[3]; Luma[3] = Y[3]; | |
178 | 8428 | Luma[4] = Y[1]; Luma[5] = Y[2]; Luma[6] = Y[2]; Luma[7] = Y[3]; | |
179 | 8428 | Luma[8] = Y[0]; Luma[9] = Y[1]; Luma[10] = Y[1]; Luma[11] = Y[2]; | |
180 | 8428 | Luma[12] = Y[0]; Luma[13] = Y[0]; Luma[14] = Y[0]; Luma[15] = Y[1]; | |
181 | 8428 | break; | |
182 | 75596 | case 4: | |
183 | 75596 | Luma[0] = Y[3]; Luma[1] = Y[3]; Luma[2] = Y[3]; Luma[3] = Y[3]; | |
184 | 75596 | Luma[4] = Y[2]; Luma[5] = Y[2]; Luma[6] = Y[2]; Luma[7] = Y[2]; | |
185 | 75596 | Luma[8] = Y[1]; Luma[9] = Y[1]; Luma[10] = Y[1]; Luma[11] = Y[1]; | |
186 | 75596 | Luma[12] = Y[0]; Luma[13] = Y[0]; Luma[14] = Y[0]; Luma[15] = Y[0]; | |
187 | 75596 | break; | |
188 | 7636 | case 5: | |
189 | 7636 | Luma[0] = Y[3]; Luma[1] = Y[3]; Luma[2] = Y[3]; Luma[3] = Y[2]; | |
190 | 7636 | Luma[4] = Y[3]; Luma[5] = Y[2]; Luma[6] = Y[2]; Luma[7] = Y[1]; | |
191 | 7636 | Luma[8] = Y[2]; Luma[9] = Y[1]; Luma[10] = Y[1]; Luma[11] = Y[0]; | |
192 | 7636 | Luma[12] = Y[1]; Luma[13] = Y[0]; Luma[14] = Y[0]; Luma[15] = Y[0]; | |
193 | 7636 | break; | |
194 | 10624 | case 6: | |
195 | 10624 | Luma[0] = Y[3]; Luma[1] = Y[3]; Luma[2] = Y[2]; Luma[3] = Y[2]; | |
196 | 10624 | Luma[4] = Y[3]; Luma[5] = Y[2]; Luma[6] = Y[1]; Luma[7] = Y[1]; | |
197 | 10624 | Luma[8] = Y[2]; Luma[9] = Y[2]; Luma[10] = Y[1]; Luma[11] = Y[0]; | |
198 | 10624 | Luma[12] = Y[1]; Luma[13] = Y[1]; Luma[14] = Y[0]; Luma[15] = Y[0]; | |
199 | 10624 | break; | |
200 | 4221 | case 7: | |
201 | 4221 | Luma[0] = Y[3]; Luma[1] = Y[3]; Luma[2] = Y[2]; Luma[3] = Y[1]; | |
202 | 4221 | Luma[4] = Y[3]; Luma[5] = Y[2]; Luma[6] = Y[1]; Luma[7] = Y[0]; | |
203 | 4221 | Luma[8] = Y[3]; Luma[9] = Y[2]; Luma[10] = Y[1]; Luma[11] = Y[0]; | |
204 | 4221 | Luma[12] = Y[2]; Luma[13] = Y[1]; Luma[14] = Y[0]; Luma[15] = Y[0]; | |
205 | 4221 | break; | |
206 | ✗ | default: | |
207 | ✗ | Luma[0] = Y[0]; Luma[1] = Y[0]; Luma[2] = Y[1]; Luma[3] = Y[1]; | |
208 | ✗ | Luma[4] = Y[0]; Luma[5] = Y[0]; Luma[6] = Y[1]; Luma[7] = Y[1]; | |
209 | ✗ | Luma[8] = Y[2]; Luma[9] = Y[2]; Luma[10] = Y[3]; Luma[11] = Y[3]; | |
210 | ✗ | Luma[12] = Y[2]; Luma[13] = Y[2]; Luma[14] = Y[3]; Luma[15] = Y[3]; | |
211 | ✗ | break; | |
212 | } | ||
213 | |||
214 | 163555 | ulti_convert_yuv(frame, x, y, Luma, chroma); | |
215 | 163555 | } | |
216 | |||
217 | 62 | static int ulti_decode_frame(AVCodecContext *avctx, AVFrame *rframe, | |
218 | int *got_frame, AVPacket *avpkt) | ||
219 | { | ||
220 | 62 | const uint8_t *buf = avpkt->data; | |
221 | 62 | int buf_size = avpkt->size; | |
222 | 62 | UltimotionDecodeContext *s=avctx->priv_data; | |
223 | 62 | int modifier = 0; | |
224 | 62 | int uniq = 0; | |
225 | 62 | int mode = 0; | |
226 | 62 | int blocks = 0; | |
227 | 62 | int done = 0; | |
228 | 62 | int x = 0, y = 0; | |
229 | int i, ret; | ||
230 | int skip; | ||
231 | int tmp; | ||
232 | |||
233 |
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62 | if ((ret = ff_reget_buffer(avctx, s->frame, 0)) < 0) |
234 | ✗ | return ret; | |
235 | |||
236 | 62 | bytestream2_init(&s->gb, buf, buf_size); | |
237 | |||
238 |
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86713 | while(!done) { |
239 | int idx; | ||
240 |
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86713 | if(blocks >= s->blocks || y >= s->height) |
241 | break;//all blocks decoded | ||
242 | |||
243 |
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86651 | if (bytestream2_get_bytes_left(&s->gb) < 1) |
244 | ✗ | goto err; | |
245 | 86651 | idx = bytestream2_get_byteu(&s->gb); | |
246 |
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86651 | if((idx & 0xF8) == 0x70) { |
247 |
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17504 | switch(idx) { |
248 | ✗ | case 0x70: //change modifier | |
249 | ✗ | modifier = bytestream2_get_byte(&s->gb); | |
250 | ✗ | if(modifier>1) | |
251 | ✗ | av_log(avctx, AV_LOG_INFO, "warning: modifier must be 0 or 1, got %i\n", modifier); | |
252 | ✗ | break; | |
253 | 4735 | case 0x71: // set uniq flag | |
254 | 4735 | uniq = 1; | |
255 | 4735 | break; | |
256 | 11510 | case 0x72: //toggle mode | |
257 | 11510 | mode = !mode; | |
258 | 11510 | break; | |
259 | ✗ | case 0x73: //end-of-frame | |
260 | ✗ | done = 1; | |
261 | ✗ | break; | |
262 | 1259 | case 0x74: //skip some blocks | |
263 | 1259 | skip = bytestream2_get_byte(&s->gb); | |
264 |
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1259 | if ((blocks + skip) >= s->blocks) |
265 | ✗ | break; | |
266 | 1259 | blocks += skip; | |
267 | 1259 | x += skip * 8; | |
268 |
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1616 | while(x >= s->width) { |
269 | 357 | x -= s->width; | |
270 | 357 | y += 8; | |
271 | } | ||
272 | 1259 | break; | |
273 | ✗ | default: | |
274 | ✗ | av_log(avctx, AV_LOG_INFO, "warning: unknown escape 0x%02X\n", idx); | |
275 | } | ||
276 | } else { //handle one block | ||
277 | int code; | ||
278 | int cf; | ||
279 | 69147 | int angle = 0; | |
280 | uint8_t Y[4]; // luma samples of block | ||
281 | 69147 | int tx = 0, ty = 0; //coords of subblock | |
282 | 69147 | int chroma = 0; | |
283 |
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69147 | if (mode || uniq) { |
284 | 28189 | uniq = 0; | |
285 | 28189 | cf = 1; | |
286 | 28189 | chroma = 0; | |
287 | } else { | ||
288 | 40958 | cf = 0; | |
289 |
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40958 | if (idx) { |
290 | 39095 | chroma = bytestream2_get_byte(&s->gb); | |
291 | } | ||
292 | } | ||
293 |
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345735 | for (i = 0; i < 4; i++) { // for every subblock |
294 | 276588 | code = (idx >> (6 - i*2)) & 3; //extract 2 bits | |
295 |
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276588 | if(!code) //skip subblock |
296 | 69893 | continue; | |
297 |
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206695 | if(cf) { |
298 | 89307 | chroma = bytestream2_get_byte(&s->gb); | |
299 | } | ||
300 | 206695 | tx = x + block_coords[i * 2]; | |
301 | 206695 | ty = y + block_coords[(i * 2) + 1]; | |
302 |
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206695 | switch(code) { |
303 | 36515 | case 1: | |
304 | 36515 | tmp = bytestream2_get_byte(&s->gb); | |
305 | |||
306 | 36515 | angle = angle_by_index[(tmp >> 6) & 0x3]; | |
307 | |||
308 | 36515 | Y[0] = tmp & 0x3F; | |
309 | 36515 | Y[1] = Y[0]; | |
310 | |||
311 |
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36515 | if (angle) { |
312 | 9385 | Y[2] = Y[0]+1; | |
313 |
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9385 | if (Y[2] > 0x3F) |
314 | ✗ | Y[2] = 0x3F; | |
315 | 9385 | Y[3] = Y[2]; | |
316 | } else { | ||
317 | 27130 | Y[2] = Y[0]; | |
318 | 27130 | Y[3] = Y[0]; | |
319 | } | ||
320 | 36515 | break; | |
321 | |||
322 | 110712 | case 2: | |
323 |
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110712 | if (modifier) { // unpack four luma samples |
324 | ✗ | tmp = bytestream2_get_be24(&s->gb); | |
325 | |||
326 | ✗ | Y[0] = (tmp >> 18) & 0x3F; | |
327 | ✗ | Y[1] = (tmp >> 12) & 0x3F; | |
328 | ✗ | Y[2] = (tmp >> 6) & 0x3F; | |
329 | ✗ | Y[3] = tmp & 0x3F; | |
330 | ✗ | angle = 16; | |
331 | } else { // retrieve luma samples from codebook | ||
332 | 110712 | tmp = bytestream2_get_be16(&s->gb); | |
333 | |||
334 | 110712 | angle = (tmp >> 12) & 0xF; | |
335 | 110712 | tmp &= 0xFFF; | |
336 | 110712 | tmp <<= 2; | |
337 | 110712 | Y[0] = s->ulti_codebook[tmp]; | |
338 | 110712 | Y[1] = s->ulti_codebook[tmp + 1]; | |
339 | 110712 | Y[2] = s->ulti_codebook[tmp + 2]; | |
340 | 110712 | Y[3] = s->ulti_codebook[tmp + 3]; | |
341 | } | ||
342 | 110712 | break; | |
343 | |||
344 | 59468 | case 3: | |
345 |
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59468 | if (modifier) { // all 16 luma samples |
346 | uint8_t Luma[16]; | ||
347 | |||
348 | ✗ | if (bytestream2_get_bytes_left(&s->gb) < 12) | |
349 | ✗ | goto err; | |
350 | ✗ | tmp = bytestream2_get_be24u(&s->gb); | |
351 | ✗ | Luma[0] = (tmp >> 18) & 0x3F; | |
352 | ✗ | Luma[1] = (tmp >> 12) & 0x3F; | |
353 | ✗ | Luma[2] = (tmp >> 6) & 0x3F; | |
354 | ✗ | Luma[3] = tmp & 0x3F; | |
355 | |||
356 | ✗ | tmp = bytestream2_get_be24u(&s->gb); | |
357 | ✗ | Luma[4] = (tmp >> 18) & 0x3F; | |
358 | ✗ | Luma[5] = (tmp >> 12) & 0x3F; | |
359 | ✗ | Luma[6] = (tmp >> 6) & 0x3F; | |
360 | ✗ | Luma[7] = tmp & 0x3F; | |
361 | |||
362 | ✗ | tmp = bytestream2_get_be24u(&s->gb); | |
363 | ✗ | Luma[8] = (tmp >> 18) & 0x3F; | |
364 | ✗ | Luma[9] = (tmp >> 12) & 0x3F; | |
365 | ✗ | Luma[10] = (tmp >> 6) & 0x3F; | |
366 | ✗ | Luma[11] = tmp & 0x3F; | |
367 | |||
368 | ✗ | tmp = bytestream2_get_be24u(&s->gb); | |
369 | ✗ | Luma[12] = (tmp >> 18) & 0x3F; | |
370 | ✗ | Luma[13] = (tmp >> 12) & 0x3F; | |
371 | ✗ | Luma[14] = (tmp >> 6) & 0x3F; | |
372 | ✗ | Luma[15] = tmp & 0x3F; | |
373 | |||
374 | ✗ | ulti_convert_yuv(s->frame, tx, ty, Luma, chroma); | |
375 | } else { | ||
376 |
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59468 | if (bytestream2_get_bytes_left(&s->gb) < 4) |
377 | ✗ | goto err; | |
378 | 59468 | tmp = bytestream2_get_byteu(&s->gb); | |
379 |
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59468 | if(tmp & 0x80) { |
380 | 16328 | angle = (tmp >> 4) & 0x7; | |
381 | 16328 | tmp = (tmp << 8) + bytestream2_get_byteu(&s->gb); | |
382 | 16328 | Y[0] = (tmp >> 6) & 0x3F; | |
383 | 16328 | Y[1] = tmp & 0x3F; | |
384 | 16328 | Y[2] = bytestream2_get_byteu(&s->gb) & 0x3F; | |
385 | 16328 | Y[3] = bytestream2_get_byteu(&s->gb) & 0x3F; | |
386 | 16328 | ulti_grad(s->frame, tx, ty, Y, chroma, angle); //draw block | |
387 | } else { // some patterns | ||
388 | 43140 | int f0 = tmp; | |
389 | 43140 | int f1 = bytestream2_get_byteu(&s->gb); | |
390 | 43140 | Y[0] = bytestream2_get_byteu(&s->gb) & 0x3F; | |
391 | 43140 | Y[1] = bytestream2_get_byteu(&s->gb) & 0x3F; | |
392 | 43140 | ulti_pattern(s->frame, tx, ty, f0, f1, Y[0], Y[1], chroma); | |
393 | } | ||
394 | } | ||
395 | 59468 | break; | |
396 | } | ||
397 |
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206695 | if(code != 3) |
398 | 147227 | ulti_grad(s->frame, tx, ty, Y, chroma, angle); // draw block | |
399 | } | ||
400 | 69147 | blocks++; | |
401 | 69147 | x += 8; | |
402 |
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69147 | if(x >= s->width) { |
403 | 1503 | x = 0; | |
404 | 1503 | y += 8; | |
405 | } | ||
406 | } | ||
407 | } | ||
408 | |||
409 | 62 | *got_frame = 1; | |
410 |
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62 | if ((ret = av_frame_ref(rframe, s->frame)) < 0) |
411 | ✗ | return ret; | |
412 | |||
413 | 62 | return buf_size; | |
414 | |||
415 | ✗ | err: | |
416 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
417 | "Insufficient data\n"); | ||
418 | ✗ | return AVERROR_INVALIDDATA; | |
419 | } | ||
420 | |||
421 | const FFCodec ff_ulti_decoder = { | ||
422 | .p.name = "ultimotion", | ||
423 | .p.long_name = NULL_IF_CONFIG_SMALL("IBM UltiMotion"), | ||
424 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
425 | .p.id = AV_CODEC_ID_ULTI, | ||
426 | .priv_data_size = sizeof(UltimotionDecodeContext), | ||
427 | .init = ulti_decode_init, | ||
428 | .close = ulti_decode_end, | ||
429 | FF_CODEC_DECODE_CB(ulti_decode_frame), | ||
430 | .p.capabilities = AV_CODEC_CAP_DR1, | ||
431 | .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, | ||
432 | }; | ||
433 |