3 * Copyright (c) 2000,2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
30 #include "mpegvideo.h"
31 #include "mpeg4video.h"
36 #define DC_VLC_BITS 14 //FIXME find a better solution
38 static const uint16_t rv_lum_code[256] =
40 0x3e7f, 0x0f00, 0x0f01, 0x0f02, 0x0f03, 0x0f04, 0x0f05, 0x0f06,
41 0x0f07, 0x0f08, 0x0f09, 0x0f0a, 0x0f0b, 0x0f0c, 0x0f0d, 0x0f0e,
42 0x0f0f, 0x0f10, 0x0f11, 0x0f12, 0x0f13, 0x0f14, 0x0f15, 0x0f16,
43 0x0f17, 0x0f18, 0x0f19, 0x0f1a, 0x0f1b, 0x0f1c, 0x0f1d, 0x0f1e,
44 0x0f1f, 0x0f20, 0x0f21, 0x0f22, 0x0f23, 0x0f24, 0x0f25, 0x0f26,
45 0x0f27, 0x0f28, 0x0f29, 0x0f2a, 0x0f2b, 0x0f2c, 0x0f2d, 0x0f2e,
46 0x0f2f, 0x0f30, 0x0f31, 0x0f32, 0x0f33, 0x0f34, 0x0f35, 0x0f36,
47 0x0f37, 0x0f38, 0x0f39, 0x0f3a, 0x0f3b, 0x0f3c, 0x0f3d, 0x0f3e,
48 0x0f3f, 0x0380, 0x0381, 0x0382, 0x0383, 0x0384, 0x0385, 0x0386,
49 0x0387, 0x0388, 0x0389, 0x038a, 0x038b, 0x038c, 0x038d, 0x038e,
50 0x038f, 0x0390, 0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396,
51 0x0397, 0x0398, 0x0399, 0x039a, 0x039b, 0x039c, 0x039d, 0x039e,
52 0x039f, 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6,
53 0x00c7, 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce,
54 0x00cf, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056,
55 0x0057, 0x0020, 0x0021, 0x0022, 0x0023, 0x000c, 0x000d, 0x0004,
56 0x0000, 0x0005, 0x000e, 0x000f, 0x0024, 0x0025, 0x0026, 0x0027,
57 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f,
58 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7,
59 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df,
60 0x03a0, 0x03a1, 0x03a2, 0x03a3, 0x03a4, 0x03a5, 0x03a6, 0x03a7,
61 0x03a8, 0x03a9, 0x03aa, 0x03ab, 0x03ac, 0x03ad, 0x03ae, 0x03af,
62 0x03b0, 0x03b1, 0x03b2, 0x03b3, 0x03b4, 0x03b5, 0x03b6, 0x03b7,
63 0x03b8, 0x03b9, 0x03ba, 0x03bb, 0x03bc, 0x03bd, 0x03be, 0x03bf,
64 0x0f40, 0x0f41, 0x0f42, 0x0f43, 0x0f44, 0x0f45, 0x0f46, 0x0f47,
65 0x0f48, 0x0f49, 0x0f4a, 0x0f4b, 0x0f4c, 0x0f4d, 0x0f4e, 0x0f4f,
66 0x0f50, 0x0f51, 0x0f52, 0x0f53, 0x0f54, 0x0f55, 0x0f56, 0x0f57,
67 0x0f58, 0x0f59, 0x0f5a, 0x0f5b, 0x0f5c, 0x0f5d, 0x0f5e, 0x0f5f,
68 0x0f60, 0x0f61, 0x0f62, 0x0f63, 0x0f64, 0x0f65, 0x0f66, 0x0f67,
69 0x0f68, 0x0f69, 0x0f6a, 0x0f6b, 0x0f6c, 0x0f6d, 0x0f6e, 0x0f6f,
70 0x0f70, 0x0f71, 0x0f72, 0x0f73, 0x0f74, 0x0f75, 0x0f76, 0x0f77,
71 0x0f78, 0x0f79, 0x0f7a, 0x0f7b, 0x0f7c, 0x0f7d, 0x0f7e, 0x0f7f,
74 static const uint8_t rv_lum_bits[256] =
76 14, 12, 12, 12, 12, 12, 12, 12,
77 12, 12, 12, 12, 12, 12, 12, 12,
78 12, 12, 12, 12, 12, 12, 12, 12,
79 12, 12, 12, 12, 12, 12, 12, 12,
80 12, 12, 12, 12, 12, 12, 12, 12,
81 12, 12, 12, 12, 12, 12, 12, 12,
82 12, 12, 12, 12, 12, 12, 12, 12,
83 12, 12, 12, 12, 12, 12, 12, 12,
84 12, 10, 10, 10, 10, 10, 10, 10,
85 10, 10, 10, 10, 10, 10, 10, 10,
86 10, 10, 10, 10, 10, 10, 10, 10,
87 10, 10, 10, 10, 10, 10, 10, 10,
88 10, 8, 8, 8, 8, 8, 8, 8,
89 8, 8, 8, 8, 8, 8, 8, 8,
90 8, 7, 7, 7, 7, 7, 7, 7,
91 7, 6, 6, 6, 6, 5, 5, 4,
92 2, 4, 5, 5, 6, 6, 6, 6,
93 7, 7, 7, 7, 7, 7, 7, 7,
94 8, 8, 8, 8, 8, 8, 8, 8,
95 8, 8, 8, 8, 8, 8, 8, 8,
96 10, 10, 10, 10, 10, 10, 10, 10,
97 10, 10, 10, 10, 10, 10, 10, 10,
98 10, 10, 10, 10, 10, 10, 10, 10,
99 10, 10, 10, 10, 10, 10, 10, 10,
100 12, 12, 12, 12, 12, 12, 12, 12,
101 12, 12, 12, 12, 12, 12, 12, 12,
102 12, 12, 12, 12, 12, 12, 12, 12,
103 12, 12, 12, 12, 12, 12, 12, 12,
104 12, 12, 12, 12, 12, 12, 12, 12,
105 12, 12, 12, 12, 12, 12, 12, 12,
106 12, 12, 12, 12, 12, 12, 12, 12,
107 12, 12, 12, 12, 12, 12, 12, 12,
110 static const uint16_t rv_chrom_code[256] =
112 0xfe7f, 0x3f00, 0x3f01, 0x3f02, 0x3f03, 0x3f04, 0x3f05, 0x3f06,
113 0x3f07, 0x3f08, 0x3f09, 0x3f0a, 0x3f0b, 0x3f0c, 0x3f0d, 0x3f0e,
114 0x3f0f, 0x3f10, 0x3f11, 0x3f12, 0x3f13, 0x3f14, 0x3f15, 0x3f16,
115 0x3f17, 0x3f18, 0x3f19, 0x3f1a, 0x3f1b, 0x3f1c, 0x3f1d, 0x3f1e,
116 0x3f1f, 0x3f20, 0x3f21, 0x3f22, 0x3f23, 0x3f24, 0x3f25, 0x3f26,
117 0x3f27, 0x3f28, 0x3f29, 0x3f2a, 0x3f2b, 0x3f2c, 0x3f2d, 0x3f2e,
118 0x3f2f, 0x3f30, 0x3f31, 0x3f32, 0x3f33, 0x3f34, 0x3f35, 0x3f36,
119 0x3f37, 0x3f38, 0x3f39, 0x3f3a, 0x3f3b, 0x3f3c, 0x3f3d, 0x3f3e,
120 0x3f3f, 0x0f80, 0x0f81, 0x0f82, 0x0f83, 0x0f84, 0x0f85, 0x0f86,
121 0x0f87, 0x0f88, 0x0f89, 0x0f8a, 0x0f8b, 0x0f8c, 0x0f8d, 0x0f8e,
122 0x0f8f, 0x0f90, 0x0f91, 0x0f92, 0x0f93, 0x0f94, 0x0f95, 0x0f96,
123 0x0f97, 0x0f98, 0x0f99, 0x0f9a, 0x0f9b, 0x0f9c, 0x0f9d, 0x0f9e,
124 0x0f9f, 0x03c0, 0x03c1, 0x03c2, 0x03c3, 0x03c4, 0x03c5, 0x03c6,
125 0x03c7, 0x03c8, 0x03c9, 0x03ca, 0x03cb, 0x03cc, 0x03cd, 0x03ce,
126 0x03cf, 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6,
127 0x00e7, 0x0030, 0x0031, 0x0032, 0x0033, 0x0008, 0x0009, 0x0002,
128 0x0000, 0x0003, 0x000a, 0x000b, 0x0034, 0x0035, 0x0036, 0x0037,
129 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef,
130 0x03d0, 0x03d1, 0x03d2, 0x03d3, 0x03d4, 0x03d5, 0x03d6, 0x03d7,
131 0x03d8, 0x03d9, 0x03da, 0x03db, 0x03dc, 0x03dd, 0x03de, 0x03df,
132 0x0fa0, 0x0fa1, 0x0fa2, 0x0fa3, 0x0fa4, 0x0fa5, 0x0fa6, 0x0fa7,
133 0x0fa8, 0x0fa9, 0x0faa, 0x0fab, 0x0fac, 0x0fad, 0x0fae, 0x0faf,
134 0x0fb0, 0x0fb1, 0x0fb2, 0x0fb3, 0x0fb4, 0x0fb5, 0x0fb6, 0x0fb7,
135 0x0fb8, 0x0fb9, 0x0fba, 0x0fbb, 0x0fbc, 0x0fbd, 0x0fbe, 0x0fbf,
136 0x3f40, 0x3f41, 0x3f42, 0x3f43, 0x3f44, 0x3f45, 0x3f46, 0x3f47,
137 0x3f48, 0x3f49, 0x3f4a, 0x3f4b, 0x3f4c, 0x3f4d, 0x3f4e, 0x3f4f,
138 0x3f50, 0x3f51, 0x3f52, 0x3f53, 0x3f54, 0x3f55, 0x3f56, 0x3f57,
139 0x3f58, 0x3f59, 0x3f5a, 0x3f5b, 0x3f5c, 0x3f5d, 0x3f5e, 0x3f5f,
140 0x3f60, 0x3f61, 0x3f62, 0x3f63, 0x3f64, 0x3f65, 0x3f66, 0x3f67,
141 0x3f68, 0x3f69, 0x3f6a, 0x3f6b, 0x3f6c, 0x3f6d, 0x3f6e, 0x3f6f,
142 0x3f70, 0x3f71, 0x3f72, 0x3f73, 0x3f74, 0x3f75, 0x3f76, 0x3f77,
143 0x3f78, 0x3f79, 0x3f7a, 0x3f7b, 0x3f7c, 0x3f7d, 0x3f7e, 0x3f7f,
146 static const uint8_t rv_chrom_bits[256] =
148 16, 14, 14, 14, 14, 14, 14, 14,
149 14, 14, 14, 14, 14, 14, 14, 14,
150 14, 14, 14, 14, 14, 14, 14, 14,
151 14, 14, 14, 14, 14, 14, 14, 14,
152 14, 14, 14, 14, 14, 14, 14, 14,
153 14, 14, 14, 14, 14, 14, 14, 14,
154 14, 14, 14, 14, 14, 14, 14, 14,
155 14, 14, 14, 14, 14, 14, 14, 14,
156 14, 12, 12, 12, 12, 12, 12, 12,
157 12, 12, 12, 12, 12, 12, 12, 12,
158 12, 12, 12, 12, 12, 12, 12, 12,
159 12, 12, 12, 12, 12, 12, 12, 12,
160 12, 10, 10, 10, 10, 10, 10, 10,
161 10, 10, 10, 10, 10, 10, 10, 10,
162 10, 8, 8, 8, 8, 8, 8, 8,
163 8, 6, 6, 6, 6, 4, 4, 3,
164 2, 3, 4, 4, 6, 6, 6, 6,
165 8, 8, 8, 8, 8, 8, 8, 8,
166 10, 10, 10, 10, 10, 10, 10, 10,
167 10, 10, 10, 10, 10, 10, 10, 10,
168 12, 12, 12, 12, 12, 12, 12, 12,
169 12, 12, 12, 12, 12, 12, 12, 12,
170 12, 12, 12, 12, 12, 12, 12, 12,
171 12, 12, 12, 12, 12, 12, 12, 12,
172 14, 14, 14, 14, 14, 14, 14, 14,
173 14, 14, 14, 14, 14, 14, 14, 14,
174 14, 14, 14, 14, 14, 14, 14, 14,
175 14, 14, 14, 14, 14, 14, 14, 14,
176 14, 14, 14, 14, 14, 14, 14, 14,
177 14, 14, 14, 14, 14, 14, 14, 14,
178 14, 14, 14, 14, 14, 14, 14, 14,
179 14, 14, 14, 14, 14, 14, 14, 14,
182 static VLC rv_dc_lum, rv_dc_chrom;
184 int rv_decode_dc(MpegEncContext *s, int n)
189 code = get_vlc2(&s->gb, rv_dc_lum.table, DC_VLC_BITS, 2);
191 /* XXX: I don't understand why they use LONGER codes than
192 necessary. The following code would be completely useless
193 if they had thought about it !!! */
194 code = get_bits(&s->gb, 7);
196 code = (int8_t)(get_bits(&s->gb, 7) + 1);
197 } else if (code == 0x7d) {
198 code = -128 + get_bits(&s->gb, 7);
199 } else if (code == 0x7e) {
200 if (get_bits1(&s->gb) == 0)
201 code = (int8_t)(get_bits(&s->gb, 8) + 1);
203 code = (int8_t)(get_bits(&s->gb, 8));
204 } else if (code == 0x7f) {
205 skip_bits(&s->gb, 11);
212 code = get_vlc2(&s->gb, rv_dc_chrom.table, DC_VLC_BITS, 2);
215 code = get_bits(&s->gb, 9);
217 code = (int8_t)(get_bits(&s->gb, 7) + 1);
218 } else if (code == 0x1fd) {
219 code = -128 + get_bits(&s->gb, 7);
220 } else if (code == 0x1fe) {
221 skip_bits(&s->gb, 9);
224 av_log(s->avctx, AV_LOG_ERROR, "chroma dc error\n");
234 /* read RV 1.0 compatible frame header */
235 static int rv10_decode_picture_header(MpegEncContext *s)
237 int mb_count, pb_frame, marker, unk, mb_xy;
239 marker = get_bits1(&s->gb);
241 if (get_bits1(&s->gb))
242 s->pict_type = FF_P_TYPE;
244 s->pict_type = FF_I_TYPE;
245 if(!marker) av_log(s->avctx, AV_LOG_ERROR, "marker missing\n");
246 pb_frame = get_bits1(&s->gb);
248 dprintf(s->avctx, "pict_type=%d pb_frame=%d\n", s->pict_type, pb_frame);
251 av_log(s->avctx, AV_LOG_ERROR, "pb frame not supported\n");
255 s->qscale = get_bits(&s->gb, 5);
257 av_log(s->avctx, AV_LOG_ERROR, "error, qscale:0\n");
261 if (s->pict_type == FF_I_TYPE) {
262 if (s->rv10_version == 3) {
263 /* specific MPEG like DC coding not used */
264 s->last_dc[0] = get_bits(&s->gb, 8);
265 s->last_dc[1] = get_bits(&s->gb, 8);
266 s->last_dc[2] = get_bits(&s->gb, 8);
267 dprintf(s->avctx, "DC:%d %d %d\n", s->last_dc[0],
268 s->last_dc[1], s->last_dc[2]);
271 /* if multiple packets per frame are sent, the position at which
272 to display the macroblocks is coded here */
274 mb_xy= s->mb_x + s->mb_y*s->mb_width;
275 if(show_bits(&s->gb, 12)==0 || (mb_xy && mb_xy < s->mb_num)){
276 s->mb_x = get_bits(&s->gb, 6); /* mb_x */
277 s->mb_y = get_bits(&s->gb, 6); /* mb_y */
278 mb_count = get_bits(&s->gb, 12);
282 mb_count = s->mb_width * s->mb_height;
284 unk= get_bits(&s->gb, 3); /* ignored */
286 s->unrestricted_mv = 1;
291 static int rv20_decode_picture_header(MpegEncContext *s)
296 GetBitContext gb= s->gb;
298 av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&gb));
299 if(i%4==3) av_log(s->avctx, AV_LOG_DEBUG, " ");
301 av_log(s->avctx, AV_LOG_DEBUG, "\n");
304 av_log(s->avctx, AV_LOG_DEBUG, "%3dx%03d/%02Xx%02X ", s->width, s->height, s->width/4, s->height/4);
305 for(i=0; i<s->avctx->extradata_size; i++){
306 av_log(s->avctx, AV_LOG_DEBUG, "%02X ", ((uint8_t*)s->avctx->extradata)[i]);
307 if(i%4==3) av_log(s->avctx, AV_LOG_DEBUG, " ");
309 av_log(s->avctx, AV_LOG_DEBUG, "\n");
312 if(s->avctx->sub_id == 0x30202002 || s->avctx->sub_id == 0x30203002){
313 if (get_bits(&s->gb, 3)){
314 av_log(s->avctx, AV_LOG_ERROR, "unknown triplet set\n");
319 i= get_bits(&s->gb, 2);
321 case 0: s->pict_type= FF_I_TYPE; break;
322 case 1: s->pict_type= FF_I_TYPE; break; //hmm ...
323 case 2: s->pict_type= FF_P_TYPE; break;
324 case 3: s->pict_type= FF_B_TYPE; break;
326 av_log(s->avctx, AV_LOG_ERROR, "unknown frame type\n");
330 if(s->last_picture_ptr==NULL && s->pict_type==FF_B_TYPE){
331 av_log(s->avctx, AV_LOG_ERROR, "early B pix\n");
335 if (get_bits1(&s->gb)){
336 av_log(s->avctx, AV_LOG_ERROR, "unknown bit set\n");
340 s->qscale = get_bits(&s->gb, 5);
342 av_log(s->avctx, AV_LOG_ERROR, "error, qscale:0\n");
345 if(s->avctx->sub_id == 0x30203002){
346 if (get_bits1(&s->gb)){
347 av_log(s->avctx, AV_LOG_ERROR, "unknown bit2 set\n");
352 if(s->avctx->has_b_frames){
354 int v= s->avctx->extradata_size >= 4 ? 7&((uint8_t*)s->avctx->extradata)[1] : 0;
356 if (get_bits1(&s->gb)){
357 av_log(s->avctx, AV_LOG_ERROR, "unknown bit3 set\n");
359 seq= get_bits(&s->gb, 13)<<2;
361 f= get_bits(&s->gb, av_log2(v)+1);
364 new_w= 4*((uint8_t*)s->avctx->extradata)[6+2*f];
365 new_h= 4*((uint8_t*)s->avctx->extradata)[7+2*f];
367 new_w= s->orig_width ;
368 new_h= s->orig_height;
370 if(new_w != s->width || new_h != s->height){
371 av_log(s->avctx, AV_LOG_DEBUG, "attempting to change resolution to %dx%d\n", new_w, new_h);
372 if (avcodec_check_dimensions(s->avctx, new_w, new_h) < 0)
375 avcodec_set_dimensions(s->avctx, new_w, new_h);
378 if (MPV_common_init(s) < 0)
382 if(s->avctx->debug & FF_DEBUG_PICT_INFO){
383 av_log(s->avctx, AV_LOG_DEBUG, "F %d/%d\n", f, v);
386 seq= get_bits(&s->gb, 8)*128;
389 // if(s->avctx->sub_id <= 0x20201002){ //0x20201002 definitely needs this
390 mb_pos= ff_h263_decode_mba(s);
392 mb_pos= get_bits(&s->gb, av_log2(s->mb_num-1)+1);
393 s->mb_x= mb_pos % s->mb_width;
394 s->mb_y= mb_pos / s->mb_width;
396 //av_log(s->avctx, AV_LOG_DEBUG, "%d\n", seq);
397 seq |= s->time &~0x7FFF;
398 if(seq - s->time > 0x4000) seq -= 0x8000;
399 if(seq - s->time < -0x4000) seq += 0x8000;
401 if(s->pict_type!=FF_B_TYPE){
403 s->pp_time= s->time - s->last_non_b_time;
404 s->last_non_b_time= s->time;
407 s->pb_time= s->pp_time - (s->last_non_b_time - s->time);
408 if(s->pp_time <=s->pb_time || s->pp_time <= s->pp_time - s->pb_time || s->pp_time<=0){
409 av_log(s->avctx, AV_LOG_DEBUG, "messed up order, possible from seeking? skipping current b frame\n");
410 return FRAME_SKIPPED;
412 ff_mpeg4_init_direct_mv(s);
415 // printf("%d %d %d %d %d\n", seq, (int)s->time, (int)s->last_non_b_time, s->pp_time, s->pb_time);
416 /*for(i=0; i<32; i++){
417 av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&s->gb));
419 av_log(s->avctx, AV_LOG_DEBUG, "\n");*/
420 s->no_rounding= get_bits1(&s->gb);
423 s->unrestricted_mv = 1;
424 s->h263_aic= s->pict_type == FF_I_TYPE;
425 // s->alt_inter_vlc=1;
429 if(!s->avctx->lowres)
432 if(s->avctx->debug & FF_DEBUG_PICT_INFO){
433 av_log(s->avctx, AV_LOG_INFO, "num:%5d x:%2d y:%2d type:%d qscale:%2d rnd:%d\n",
434 seq, s->mb_x, s->mb_y, s->pict_type, s->qscale, s->no_rounding);
437 assert(s->pict_type != FF_B_TYPE || !s->low_delay);
439 return s->mb_width*s->mb_height - mb_pos;
442 static av_cold int rv10_decode_init(AVCodecContext *avctx)
444 MpegEncContext *s = avctx->priv_data;
447 if (avctx->extradata_size < 8) {
448 av_log(avctx, AV_LOG_ERROR, "Extradata is too small.\n");
452 MPV_decode_defaults(s);
455 s->out_format = FMT_H263;
456 s->codec_id= avctx->codec_id;
458 s->orig_width = s->width = avctx->coded_width;
459 s->orig_height= s->height = avctx->coded_height;
461 s->h263_long_vectors= ((uint8_t*)avctx->extradata)[3] & 1;
462 avctx->sub_id= AV_RB32((uint8_t*)avctx->extradata + 4);
464 if (avctx->sub_id == 0x10000000) {
467 } else if (avctx->sub_id == 0x10001000) {
470 } else if (avctx->sub_id == 0x10002000) {
474 } else if (avctx->sub_id == 0x10003000) {
477 } else if (avctx->sub_id == 0x10003001) {
480 } else if ( avctx->sub_id == 0x20001000
481 || (avctx->sub_id >= 0x20100000 && avctx->sub_id < 0x201a0000)) {
483 } else if ( avctx->sub_id == 0x30202002
484 || avctx->sub_id == 0x30203002
485 || (avctx->sub_id >= 0x20200002 && avctx->sub_id < 0x20300000)) {
487 s->avctx->has_b_frames=1;
489 av_log(s->avctx, AV_LOG_ERROR, "unknown header %X\n", avctx->sub_id);
491 if(avctx->debug & FF_DEBUG_PICT_INFO){
492 av_log(avctx, AV_LOG_DEBUG, "ver:%X ver0:%X\n", avctx->sub_id, avctx->extradata_size >= 4 ? ((uint32_t*)avctx->extradata)[0] : -1);
495 avctx->pix_fmt = PIX_FMT_YUV420P;
497 if (MPV_common_init(s) < 0)
500 h263_decode_init_vlc(s);
504 INIT_VLC_STATIC(&rv_dc_lum, DC_VLC_BITS, 256,
506 rv_lum_code, 2, 2, 16384);
507 INIT_VLC_STATIC(&rv_dc_chrom, DC_VLC_BITS, 256,
509 rv_chrom_code, 2, 2, 16388);
516 static av_cold int rv10_decode_end(AVCodecContext *avctx)
518 MpegEncContext *s = avctx->priv_data;
524 static int rv10_decode_packet(AVCodecContext *avctx,
525 const uint8_t *buf, int buf_size, int buf_size2)
527 MpegEncContext *s = avctx->priv_data;
528 int mb_count, mb_pos, left, start_mb_x;
530 init_get_bits(&s->gb, buf, buf_size*8);
531 if(s->codec_id ==CODEC_ID_RV10)
532 mb_count = rv10_decode_picture_header(s);
534 mb_count = rv20_decode_picture_header(s);
536 av_log(s->avctx, AV_LOG_ERROR, "HEADER ERROR\n");
540 if (s->mb_x >= s->mb_width ||
541 s->mb_y >= s->mb_height) {
542 av_log(s->avctx, AV_LOG_ERROR, "POS ERROR %d %d\n", s->mb_x, s->mb_y);
545 mb_pos = s->mb_y * s->mb_width + s->mb_x;
546 left = s->mb_width * s->mb_height - mb_pos;
547 if (mb_count > left) {
548 av_log(s->avctx, AV_LOG_ERROR, "COUNT ERROR\n");
552 if ((s->mb_x == 0 && s->mb_y == 0) || s->current_picture_ptr==NULL) {
553 if(s->current_picture_ptr){ //FIXME write parser so we always have complete frames?
556 s->mb_x= s->mb_y = s->resync_mb_x = s->resync_mb_y= 0;
558 if(MPV_frame_start(s, avctx) < 0)
560 ff_er_frame_start(s);
563 dprintf(avctx, "qscale=%d\n", s->qscale);
565 /* default quantization values */
566 if(s->codec_id== CODEC_ID_RV10){
567 if(s->mb_y==0) s->first_slice_line=1;
569 s->first_slice_line=1;
570 s->resync_mb_x= s->mb_x;
573 s->resync_mb_y= s->mb_y;
576 s->c_dc_scale_table= ff_aic_dc_scale_table;
579 s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
582 if(s->modified_quant)
583 s->chroma_qscale_table= ff_h263_chroma_qscale_table;
585 ff_set_qscale(s, s->qscale);
587 s->rv10_first_dc_coded[0] = 0;
588 s->rv10_first_dc_coded[1] = 0;
589 s->rv10_first_dc_coded[2] = 0;
593 s->block_wrap[3]= s->b8_stride;
595 s->block_wrap[5]= s->mb_stride;
596 ff_init_block_index(s);
597 /* decode each macroblock */
599 for(s->mb_num_left= mb_count; s->mb_num_left>0; s->mb_num_left--) {
601 ff_update_block_index(s);
602 dprintf(avctx, "**mb x=%d y=%d\n", s->mb_x, s->mb_y);
604 s->mv_dir = MV_DIR_FORWARD;
605 s->mv_type = MV_TYPE_16X16;
606 ret=ff_h263_decode_mb(s, s->block);
608 if (ret != SLICE_ERROR && s->gb.size_in_bits < get_bits_count(&s->gb) && 8*buf_size2 >= get_bits_count(&s->gb)){
609 av_log(avctx, AV_LOG_DEBUG, "update size from %d to %d\n", s->gb.size_in_bits, 8*buf_size2);
610 s->gb.size_in_bits= 8*buf_size2;
614 if (ret == SLICE_ERROR || s->gb.size_in_bits < get_bits_count(&s->gb)) {
615 av_log(s->avctx, AV_LOG_ERROR, "ERROR at MB %d %d\n", s->mb_x, s->mb_y);
618 if(s->pict_type != FF_B_TYPE)
619 ff_h263_update_motion_val(s);
620 MPV_decode_mb(s, s->block);
622 ff_h263_loop_filter(s);
624 if (++s->mb_x == s->mb_width) {
627 ff_init_block_index(s);
629 if(s->mb_x == s->resync_mb_x)
630 s->first_slice_line=0;
631 if(ret == SLICE_END) break;
634 ff_er_add_slice(s, start_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END|DC_END|MV_END);
636 return s->gb.size_in_bits;
639 static int get_slice_offset(AVCodecContext *avctx, const uint8_t *buf, int n)
641 if(avctx->slice_count) return avctx->slice_offset[n];
642 else return AV_RL32(buf + n*8);
645 static int rv10_decode_frame(AVCodecContext *avctx,
646 void *data, int *data_size,
649 const uint8_t *buf = avpkt->data;
650 int buf_size = avpkt->size;
651 MpegEncContext *s = avctx->priv_data;
653 AVFrame *pict = data;
655 const uint8_t *slices_hdr = NULL;
657 dprintf(avctx, "*****frame %d size=%d\n", avctx->frame_number, buf_size);
659 /* no supplementary picture */
664 if(!avctx->slice_count){
665 slice_count = (*buf++) + 1;
666 slices_hdr = buf + 4;
667 buf += 8 * slice_count;
669 slice_count = avctx->slice_count;
671 for(i=0; i<slice_count; i++){
672 int offset= get_slice_offset(avctx, slices_hdr, i);
675 if(i+1 == slice_count)
676 size= buf_size - offset;
678 size= get_slice_offset(avctx, slices_hdr, i+1) - offset;
680 if(i+2 >= slice_count)
681 size2= buf_size - offset;
683 size2= get_slice_offset(avctx, slices_hdr, i+2) - offset;
685 if(rv10_decode_packet(avctx, buf+offset, size, size2) > 8*size)
689 if(s->current_picture_ptr != NULL && s->mb_y>=s->mb_height){
693 if (s->pict_type == FF_B_TYPE || s->low_delay) {
694 *pict= *(AVFrame*)s->current_picture_ptr;
695 } else if (s->last_picture_ptr != NULL) {
696 *pict= *(AVFrame*)s->last_picture_ptr;
699 if(s->last_picture_ptr || s->low_delay){
700 *data_size = sizeof(AVFrame);
701 ff_print_debug_info(s, pict);
703 s->current_picture_ptr= NULL; //so we can detect if frame_end wasnt called (find some nicer solution...)
709 AVCodec rv10_decoder = {
713 sizeof(MpegEncContext),
720 .long_name = NULL_IF_CONFIG_SMALL("RealVideo 1.0"),
721 .pix_fmts= ff_pixfmt_list_420,
724 AVCodec rv20_decoder = {
728 sizeof(MpegEncContext),
733 CODEC_CAP_DR1 | CODEC_CAP_DELAY,
734 .flush= ff_mpeg_flush,
736 .long_name = NULL_IF_CONFIG_SMALL("RealVideo 2.0"),
737 .pix_fmts= ff_pixfmt_list_420,