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
24 * @file libavcodec/rv10.c
30 #include "mpegvideo.h"
34 #define DC_VLC_BITS 14 //FIXME find a better solution
36 static const uint16_t rv_lum_code[256] =
38 0x3e7f, 0x0f00, 0x0f01, 0x0f02, 0x0f03, 0x0f04, 0x0f05, 0x0f06,
39 0x0f07, 0x0f08, 0x0f09, 0x0f0a, 0x0f0b, 0x0f0c, 0x0f0d, 0x0f0e,
40 0x0f0f, 0x0f10, 0x0f11, 0x0f12, 0x0f13, 0x0f14, 0x0f15, 0x0f16,
41 0x0f17, 0x0f18, 0x0f19, 0x0f1a, 0x0f1b, 0x0f1c, 0x0f1d, 0x0f1e,
42 0x0f1f, 0x0f20, 0x0f21, 0x0f22, 0x0f23, 0x0f24, 0x0f25, 0x0f26,
43 0x0f27, 0x0f28, 0x0f29, 0x0f2a, 0x0f2b, 0x0f2c, 0x0f2d, 0x0f2e,
44 0x0f2f, 0x0f30, 0x0f31, 0x0f32, 0x0f33, 0x0f34, 0x0f35, 0x0f36,
45 0x0f37, 0x0f38, 0x0f39, 0x0f3a, 0x0f3b, 0x0f3c, 0x0f3d, 0x0f3e,
46 0x0f3f, 0x0380, 0x0381, 0x0382, 0x0383, 0x0384, 0x0385, 0x0386,
47 0x0387, 0x0388, 0x0389, 0x038a, 0x038b, 0x038c, 0x038d, 0x038e,
48 0x038f, 0x0390, 0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396,
49 0x0397, 0x0398, 0x0399, 0x039a, 0x039b, 0x039c, 0x039d, 0x039e,
50 0x039f, 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6,
51 0x00c7, 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce,
52 0x00cf, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056,
53 0x0057, 0x0020, 0x0021, 0x0022, 0x0023, 0x000c, 0x000d, 0x0004,
54 0x0000, 0x0005, 0x000e, 0x000f, 0x0024, 0x0025, 0x0026, 0x0027,
55 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f,
56 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7,
57 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df,
58 0x03a0, 0x03a1, 0x03a2, 0x03a3, 0x03a4, 0x03a5, 0x03a6, 0x03a7,
59 0x03a8, 0x03a9, 0x03aa, 0x03ab, 0x03ac, 0x03ad, 0x03ae, 0x03af,
60 0x03b0, 0x03b1, 0x03b2, 0x03b3, 0x03b4, 0x03b5, 0x03b6, 0x03b7,
61 0x03b8, 0x03b9, 0x03ba, 0x03bb, 0x03bc, 0x03bd, 0x03be, 0x03bf,
62 0x0f40, 0x0f41, 0x0f42, 0x0f43, 0x0f44, 0x0f45, 0x0f46, 0x0f47,
63 0x0f48, 0x0f49, 0x0f4a, 0x0f4b, 0x0f4c, 0x0f4d, 0x0f4e, 0x0f4f,
64 0x0f50, 0x0f51, 0x0f52, 0x0f53, 0x0f54, 0x0f55, 0x0f56, 0x0f57,
65 0x0f58, 0x0f59, 0x0f5a, 0x0f5b, 0x0f5c, 0x0f5d, 0x0f5e, 0x0f5f,
66 0x0f60, 0x0f61, 0x0f62, 0x0f63, 0x0f64, 0x0f65, 0x0f66, 0x0f67,
67 0x0f68, 0x0f69, 0x0f6a, 0x0f6b, 0x0f6c, 0x0f6d, 0x0f6e, 0x0f6f,
68 0x0f70, 0x0f71, 0x0f72, 0x0f73, 0x0f74, 0x0f75, 0x0f76, 0x0f77,
69 0x0f78, 0x0f79, 0x0f7a, 0x0f7b, 0x0f7c, 0x0f7d, 0x0f7e, 0x0f7f,
72 static const uint8_t rv_lum_bits[256] =
74 14, 12, 12, 12, 12, 12, 12, 12,
75 12, 12, 12, 12, 12, 12, 12, 12,
76 12, 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, 10, 10, 10, 10, 10, 10, 10,
83 10, 10, 10, 10, 10, 10, 10, 10,
84 10, 10, 10, 10, 10, 10, 10, 10,
85 10, 10, 10, 10, 10, 10, 10, 10,
86 10, 8, 8, 8, 8, 8, 8, 8,
87 8, 8, 8, 8, 8, 8, 8, 8,
88 8, 7, 7, 7, 7, 7, 7, 7,
89 7, 6, 6, 6, 6, 5, 5, 4,
90 2, 4, 5, 5, 6, 6, 6, 6,
91 7, 7, 7, 7, 7, 7, 7, 7,
92 8, 8, 8, 8, 8, 8, 8, 8,
93 8, 8, 8, 8, 8, 8, 8, 8,
94 10, 10, 10, 10, 10, 10, 10, 10,
95 10, 10, 10, 10, 10, 10, 10, 10,
96 10, 10, 10, 10, 10, 10, 10, 10,
97 10, 10, 10, 10, 10, 10, 10, 10,
98 12, 12, 12, 12, 12, 12, 12, 12,
99 12, 12, 12, 12, 12, 12, 12, 12,
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,
108 static const uint16_t rv_chrom_code[256] =
110 0xfe7f, 0x3f00, 0x3f01, 0x3f02, 0x3f03, 0x3f04, 0x3f05, 0x3f06,
111 0x3f07, 0x3f08, 0x3f09, 0x3f0a, 0x3f0b, 0x3f0c, 0x3f0d, 0x3f0e,
112 0x3f0f, 0x3f10, 0x3f11, 0x3f12, 0x3f13, 0x3f14, 0x3f15, 0x3f16,
113 0x3f17, 0x3f18, 0x3f19, 0x3f1a, 0x3f1b, 0x3f1c, 0x3f1d, 0x3f1e,
114 0x3f1f, 0x3f20, 0x3f21, 0x3f22, 0x3f23, 0x3f24, 0x3f25, 0x3f26,
115 0x3f27, 0x3f28, 0x3f29, 0x3f2a, 0x3f2b, 0x3f2c, 0x3f2d, 0x3f2e,
116 0x3f2f, 0x3f30, 0x3f31, 0x3f32, 0x3f33, 0x3f34, 0x3f35, 0x3f36,
117 0x3f37, 0x3f38, 0x3f39, 0x3f3a, 0x3f3b, 0x3f3c, 0x3f3d, 0x3f3e,
118 0x3f3f, 0x0f80, 0x0f81, 0x0f82, 0x0f83, 0x0f84, 0x0f85, 0x0f86,
119 0x0f87, 0x0f88, 0x0f89, 0x0f8a, 0x0f8b, 0x0f8c, 0x0f8d, 0x0f8e,
120 0x0f8f, 0x0f90, 0x0f91, 0x0f92, 0x0f93, 0x0f94, 0x0f95, 0x0f96,
121 0x0f97, 0x0f98, 0x0f99, 0x0f9a, 0x0f9b, 0x0f9c, 0x0f9d, 0x0f9e,
122 0x0f9f, 0x03c0, 0x03c1, 0x03c2, 0x03c3, 0x03c4, 0x03c5, 0x03c6,
123 0x03c7, 0x03c8, 0x03c9, 0x03ca, 0x03cb, 0x03cc, 0x03cd, 0x03ce,
124 0x03cf, 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6,
125 0x00e7, 0x0030, 0x0031, 0x0032, 0x0033, 0x0008, 0x0009, 0x0002,
126 0x0000, 0x0003, 0x000a, 0x000b, 0x0034, 0x0035, 0x0036, 0x0037,
127 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef,
128 0x03d0, 0x03d1, 0x03d2, 0x03d3, 0x03d4, 0x03d5, 0x03d6, 0x03d7,
129 0x03d8, 0x03d9, 0x03da, 0x03db, 0x03dc, 0x03dd, 0x03de, 0x03df,
130 0x0fa0, 0x0fa1, 0x0fa2, 0x0fa3, 0x0fa4, 0x0fa5, 0x0fa6, 0x0fa7,
131 0x0fa8, 0x0fa9, 0x0faa, 0x0fab, 0x0fac, 0x0fad, 0x0fae, 0x0faf,
132 0x0fb0, 0x0fb1, 0x0fb2, 0x0fb3, 0x0fb4, 0x0fb5, 0x0fb6, 0x0fb7,
133 0x0fb8, 0x0fb9, 0x0fba, 0x0fbb, 0x0fbc, 0x0fbd, 0x0fbe, 0x0fbf,
134 0x3f40, 0x3f41, 0x3f42, 0x3f43, 0x3f44, 0x3f45, 0x3f46, 0x3f47,
135 0x3f48, 0x3f49, 0x3f4a, 0x3f4b, 0x3f4c, 0x3f4d, 0x3f4e, 0x3f4f,
136 0x3f50, 0x3f51, 0x3f52, 0x3f53, 0x3f54, 0x3f55, 0x3f56, 0x3f57,
137 0x3f58, 0x3f59, 0x3f5a, 0x3f5b, 0x3f5c, 0x3f5d, 0x3f5e, 0x3f5f,
138 0x3f60, 0x3f61, 0x3f62, 0x3f63, 0x3f64, 0x3f65, 0x3f66, 0x3f67,
139 0x3f68, 0x3f69, 0x3f6a, 0x3f6b, 0x3f6c, 0x3f6d, 0x3f6e, 0x3f6f,
140 0x3f70, 0x3f71, 0x3f72, 0x3f73, 0x3f74, 0x3f75, 0x3f76, 0x3f77,
141 0x3f78, 0x3f79, 0x3f7a, 0x3f7b, 0x3f7c, 0x3f7d, 0x3f7e, 0x3f7f,
144 static const uint8_t rv_chrom_bits[256] =
146 16, 14, 14, 14, 14, 14, 14, 14,
147 14, 14, 14, 14, 14, 14, 14, 14,
148 14, 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, 12, 12, 12, 12, 12, 12, 12,
155 12, 12, 12, 12, 12, 12, 12, 12,
156 12, 12, 12, 12, 12, 12, 12, 12,
157 12, 12, 12, 12, 12, 12, 12, 12,
158 12, 10, 10, 10, 10, 10, 10, 10,
159 10, 10, 10, 10, 10, 10, 10, 10,
160 10, 8, 8, 8, 8, 8, 8, 8,
161 8, 6, 6, 6, 6, 4, 4, 3,
162 2, 3, 4, 4, 6, 6, 6, 6,
163 8, 8, 8, 8, 8, 8, 8, 8,
164 10, 10, 10, 10, 10, 10, 10, 10,
165 10, 10, 10, 10, 10, 10, 10, 10,
166 12, 12, 12, 12, 12, 12, 12, 12,
167 12, 12, 12, 12, 12, 12, 12, 12,
168 12, 12, 12, 12, 12, 12, 12, 12,
169 12, 12, 12, 12, 12, 12, 12, 12,
170 14, 14, 14, 14, 14, 14, 14, 14,
171 14, 14, 14, 14, 14, 14, 14, 14,
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,
180 static VLC rv_dc_lum, rv_dc_chrom;
182 int rv_decode_dc(MpegEncContext *s, int n)
187 code = get_vlc2(&s->gb, rv_dc_lum.table, DC_VLC_BITS, 2);
189 /* XXX: I don't understand why they use LONGER codes than
190 necessary. The following code would be completely useless
191 if they had thought about it !!! */
192 code = get_bits(&s->gb, 7);
194 code = (int8_t)(get_bits(&s->gb, 7) + 1);
195 } else if (code == 0x7d) {
196 code = -128 + get_bits(&s->gb, 7);
197 } else if (code == 0x7e) {
198 if (get_bits1(&s->gb) == 0)
199 code = (int8_t)(get_bits(&s->gb, 8) + 1);
201 code = (int8_t)(get_bits(&s->gb, 8));
202 } else if (code == 0x7f) {
203 skip_bits(&s->gb, 11);
210 code = get_vlc2(&s->gb, rv_dc_chrom.table, DC_VLC_BITS, 2);
213 code = get_bits(&s->gb, 9);
215 code = (int8_t)(get_bits(&s->gb, 7) + 1);
216 } else if (code == 0x1fd) {
217 code = -128 + get_bits(&s->gb, 7);
218 } else if (code == 0x1fe) {
219 skip_bits(&s->gb, 9);
222 av_log(s->avctx, AV_LOG_ERROR, "chroma dc error\n");
232 /* read RV 1.0 compatible frame header */
233 static int rv10_decode_picture_header(MpegEncContext *s)
235 int mb_count, pb_frame, marker, unk, mb_xy;
237 marker = get_bits1(&s->gb);
239 if (get_bits1(&s->gb))
240 s->pict_type = FF_P_TYPE;
242 s->pict_type = FF_I_TYPE;
243 if(!marker) av_log(s->avctx, AV_LOG_ERROR, "marker missing\n");
244 pb_frame = get_bits1(&s->gb);
246 dprintf(s->avctx, "pict_type=%d pb_frame=%d\n", s->pict_type, pb_frame);
249 av_log(s->avctx, AV_LOG_ERROR, "pb frame not supported\n");
253 s->qscale = get_bits(&s->gb, 5);
255 av_log(s->avctx, AV_LOG_ERROR, "error, qscale:0\n");
259 if (s->pict_type == FF_I_TYPE) {
260 if (s->rv10_version == 3) {
261 /* specific MPEG like DC coding not used */
262 s->last_dc[0] = get_bits(&s->gb, 8);
263 s->last_dc[1] = get_bits(&s->gb, 8);
264 s->last_dc[2] = get_bits(&s->gb, 8);
265 dprintf(s->avctx, "DC:%d %d %d\n", s->last_dc[0],
266 s->last_dc[1], s->last_dc[2]);
269 /* if multiple packets per frame are sent, the position at which
270 to display the macroblocks is coded here */
272 mb_xy= s->mb_x + s->mb_y*s->mb_width;
273 if(show_bits(&s->gb, 12)==0 || (mb_xy && mb_xy < s->mb_num)){
274 s->mb_x = get_bits(&s->gb, 6); /* mb_x */
275 s->mb_y = get_bits(&s->gb, 6); /* mb_y */
276 mb_count = get_bits(&s->gb, 12);
280 mb_count = s->mb_width * s->mb_height;
282 unk= get_bits(&s->gb, 3); /* ignored */
284 s->unrestricted_mv = 1;
289 static int rv20_decode_picture_header(MpegEncContext *s)
294 GetBitContext gb= s->gb;
296 av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&gb));
297 if(i%4==3) av_log(s->avctx, AV_LOG_DEBUG, " ");
299 av_log(s->avctx, AV_LOG_DEBUG, "\n");
302 av_log(s->avctx, AV_LOG_DEBUG, "%3dx%03d/%02Xx%02X ", s->width, s->height, s->width/4, s->height/4);
303 for(i=0; i<s->avctx->extradata_size; i++){
304 av_log(s->avctx, AV_LOG_DEBUG, "%02X ", ((uint8_t*)s->avctx->extradata)[i]);
305 if(i%4==3) av_log(s->avctx, AV_LOG_DEBUG, " ");
307 av_log(s->avctx, AV_LOG_DEBUG, "\n");
310 if(s->avctx->sub_id == 0x30202002 || s->avctx->sub_id == 0x30203002){
311 if (get_bits(&s->gb, 3)){
312 av_log(s->avctx, AV_LOG_ERROR, "unknown triplet set\n");
317 i= get_bits(&s->gb, 2);
319 case 0: s->pict_type= FF_I_TYPE; break;
320 case 1: s->pict_type= FF_I_TYPE; break; //hmm ...
321 case 2: s->pict_type= FF_P_TYPE; break;
322 case 3: s->pict_type= FF_B_TYPE; break;
324 av_log(s->avctx, AV_LOG_ERROR, "unknown frame type\n");
328 if(s->last_picture_ptr==NULL && s->pict_type==FF_B_TYPE){
329 av_log(s->avctx, AV_LOG_ERROR, "early B pix\n");
333 if (get_bits1(&s->gb)){
334 av_log(s->avctx, AV_LOG_ERROR, "unknown bit set\n");
338 s->qscale = get_bits(&s->gb, 5);
340 av_log(s->avctx, AV_LOG_ERROR, "error, qscale:0\n");
343 if(s->avctx->sub_id == 0x30203002){
344 if (get_bits1(&s->gb)){
345 av_log(s->avctx, AV_LOG_ERROR, "unknown bit2 set\n");
350 if(s->avctx->has_b_frames){
352 int v= s->avctx->extradata_size >= 4 ? 7&((uint8_t*)s->avctx->extradata)[1] : 0;
354 if (get_bits1(&s->gb)){
355 av_log(s->avctx, AV_LOG_ERROR, "unknown bit3 set\n");
357 seq= get_bits(&s->gb, 13)<<2;
359 f= get_bits(&s->gb, av_log2(v)+1);
362 new_w= 4*((uint8_t*)s->avctx->extradata)[6+2*f];
363 new_h= 4*((uint8_t*)s->avctx->extradata)[7+2*f];
365 new_w= s->orig_width ;
366 new_h= s->orig_height;
368 if(new_w != s->width || new_h != s->height){
369 av_log(s->avctx, AV_LOG_DEBUG, "attempting to change resolution to %dx%d\n", new_w, new_h);
370 if (avcodec_check_dimensions(s->avctx, new_w, new_h) < 0)
373 avcodec_set_dimensions(s->avctx, new_w, new_h);
376 if (MPV_common_init(s) < 0)
380 if(s->avctx->debug & FF_DEBUG_PICT_INFO){
381 av_log(s->avctx, AV_LOG_DEBUG, "F %d/%d\n", f, v);
384 seq= get_bits(&s->gb, 8)*128;
387 // if(s->avctx->sub_id <= 0x20201002){ //0x20201002 definitely needs this
388 mb_pos= ff_h263_decode_mba(s);
390 mb_pos= get_bits(&s->gb, av_log2(s->mb_num-1)+1);
391 s->mb_x= mb_pos % s->mb_width;
392 s->mb_y= mb_pos / s->mb_width;
394 //av_log(s->avctx, AV_LOG_DEBUG, "%d\n", seq);
395 seq |= s->time &~0x7FFF;
396 if(seq - s->time > 0x4000) seq -= 0x8000;
397 if(seq - s->time < -0x4000) seq += 0x8000;
399 if(s->pict_type!=FF_B_TYPE){
401 s->pp_time= s->time - s->last_non_b_time;
402 s->last_non_b_time= s->time;
405 s->pb_time= s->pp_time - (s->last_non_b_time - s->time);
406 if(s->pp_time <=s->pb_time || s->pp_time <= s->pp_time - s->pb_time || s->pp_time<=0){
407 av_log(s->avctx, AV_LOG_DEBUG, "messed up order, possible from seeking? skipping current b frame\n");
408 return FRAME_SKIPPED;
410 ff_mpeg4_init_direct_mv(s);
413 // printf("%d %d %d %d %d\n", seq, (int)s->time, (int)s->last_non_b_time, s->pp_time, s->pb_time);
414 /*for(i=0; i<32; i++){
415 av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&s->gb));
417 av_log(s->avctx, AV_LOG_DEBUG, "\n");*/
418 s->no_rounding= get_bits1(&s->gb);
421 s->unrestricted_mv = 1;
422 s->h263_aic= s->pict_type == FF_I_TYPE;
423 // s->alt_inter_vlc=1;
427 if(!s->avctx->lowres)
430 if(s->avctx->debug & FF_DEBUG_PICT_INFO){
431 av_log(s->avctx, AV_LOG_INFO, "num:%5d x:%2d y:%2d type:%d qscale:%2d rnd:%d\n",
432 seq, s->mb_x, s->mb_y, s->pict_type, s->qscale, s->no_rounding);
435 assert(s->pict_type != FF_B_TYPE || !s->low_delay);
437 return s->mb_width*s->mb_height - mb_pos;
440 static av_cold int rv10_decode_init(AVCodecContext *avctx)
442 MpegEncContext *s = avctx->priv_data;
445 if (avctx->extradata_size < 8) {
446 av_log(avctx, AV_LOG_ERROR, "Extradata is too small.\n");
450 MPV_decode_defaults(s);
453 s->out_format = FMT_H263;
454 s->codec_id= avctx->codec_id;
456 s->orig_width = s->width = avctx->coded_width;
457 s->orig_height= s->height = avctx->coded_height;
459 s->h263_long_vectors= ((uint8_t*)avctx->extradata)[3] & 1;
460 avctx->sub_id= AV_RB32((uint8_t*)avctx->extradata + 4);
462 if (avctx->sub_id == 0x10000000) {
465 } else if (avctx->sub_id == 0x10001000) {
468 } else if (avctx->sub_id == 0x10002000) {
472 } else if (avctx->sub_id == 0x10003000) {
475 } else if (avctx->sub_id == 0x10003001) {
478 } else if ( avctx->sub_id == 0x20001000
479 || (avctx->sub_id >= 0x20100000 && avctx->sub_id < 0x201a0000)) {
481 } else if ( avctx->sub_id == 0x30202002
482 || avctx->sub_id == 0x30203002
483 || (avctx->sub_id >= 0x20200002 && avctx->sub_id < 0x20300000)) {
485 s->avctx->has_b_frames=1;
487 av_log(s->avctx, AV_LOG_ERROR, "unknown header %X\n", avctx->sub_id);
489 if(avctx->debug & FF_DEBUG_PICT_INFO){
490 av_log(avctx, AV_LOG_DEBUG, "ver:%X ver0:%X\n", avctx->sub_id, avctx->extradata_size >= 4 ? ((uint32_t*)avctx->extradata)[0] : -1);
493 avctx->pix_fmt = PIX_FMT_YUV420P;
495 if (MPV_common_init(s) < 0)
498 h263_decode_init_vlc(s);
502 INIT_VLC_STATIC(&rv_dc_lum, DC_VLC_BITS, 256,
504 rv_lum_code, 2, 2, 16384);
505 INIT_VLC_STATIC(&rv_dc_chrom, DC_VLC_BITS, 256,
507 rv_chrom_code, 2, 2, 16388);
514 static av_cold int rv10_decode_end(AVCodecContext *avctx)
516 MpegEncContext *s = avctx->priv_data;
522 static int rv10_decode_packet(AVCodecContext *avctx,
523 const uint8_t *buf, int buf_size, int buf_size2)
525 MpegEncContext *s = avctx->priv_data;
526 int mb_count, mb_pos, left, start_mb_x;
528 init_get_bits(&s->gb, buf, buf_size*8);
529 if(s->codec_id ==CODEC_ID_RV10)
530 mb_count = rv10_decode_picture_header(s);
532 mb_count = rv20_decode_picture_header(s);
534 av_log(s->avctx, AV_LOG_ERROR, "HEADER ERROR\n");
538 if (s->mb_x >= s->mb_width ||
539 s->mb_y >= s->mb_height) {
540 av_log(s->avctx, AV_LOG_ERROR, "POS ERROR %d %d\n", s->mb_x, s->mb_y);
543 mb_pos = s->mb_y * s->mb_width + s->mb_x;
544 left = s->mb_width * s->mb_height - mb_pos;
545 if (mb_count > left) {
546 av_log(s->avctx, AV_LOG_ERROR, "COUNT ERROR\n");
550 if ((s->mb_x == 0 && s->mb_y == 0) || s->current_picture_ptr==NULL) {
551 if(s->current_picture_ptr){ //FIXME write parser so we always have complete frames?
554 s->mb_x= s->mb_y = s->resync_mb_x = s->resync_mb_y= 0;
556 if(MPV_frame_start(s, avctx) < 0)
558 ff_er_frame_start(s);
561 dprintf(avctx, "qscale=%d\n", s->qscale);
563 /* default quantization values */
564 if(s->codec_id== CODEC_ID_RV10){
565 if(s->mb_y==0) s->first_slice_line=1;
567 s->first_slice_line=1;
568 s->resync_mb_x= s->mb_x;
571 s->resync_mb_y= s->mb_y;
574 s->c_dc_scale_table= ff_aic_dc_scale_table;
577 s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
580 if(s->modified_quant)
581 s->chroma_qscale_table= ff_h263_chroma_qscale_table;
583 ff_set_qscale(s, s->qscale);
585 s->rv10_first_dc_coded[0] = 0;
586 s->rv10_first_dc_coded[1] = 0;
587 s->rv10_first_dc_coded[2] = 0;
591 s->block_wrap[3]= s->b8_stride;
593 s->block_wrap[5]= s->mb_stride;
594 ff_init_block_index(s);
595 /* decode each macroblock */
597 for(s->mb_num_left= mb_count; s->mb_num_left>0; s->mb_num_left--) {
599 ff_update_block_index(s);
600 dprintf(avctx, "**mb x=%d y=%d\n", s->mb_x, s->mb_y);
602 s->mv_dir = MV_DIR_FORWARD;
603 s->mv_type = MV_TYPE_16X16;
604 ret=ff_h263_decode_mb(s, s->block);
606 if (ret != SLICE_ERROR && s->gb.size_in_bits < get_bits_count(&s->gb) && 8*buf_size2 >= get_bits_count(&s->gb)){
607 av_log(avctx, AV_LOG_DEBUG, "update size from %d to %d\n", s->gb.size_in_bits, 8*buf_size2);
608 s->gb.size_in_bits= 8*buf_size2;
612 if (ret == SLICE_ERROR || s->gb.size_in_bits < get_bits_count(&s->gb)) {
613 av_log(s->avctx, AV_LOG_ERROR, "ERROR at MB %d %d\n", s->mb_x, s->mb_y);
616 if(s->pict_type != FF_B_TYPE)
617 ff_h263_update_motion_val(s);
618 MPV_decode_mb(s, s->block);
620 ff_h263_loop_filter(s);
622 if (++s->mb_x == s->mb_width) {
625 ff_init_block_index(s);
627 if(s->mb_x == s->resync_mb_x)
628 s->first_slice_line=0;
629 if(ret == SLICE_END) break;
632 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);
634 return s->gb.size_in_bits;
637 static int get_slice_offset(AVCodecContext *avctx, const uint8_t *buf, int n)
639 if(avctx->slice_count) return avctx->slice_offset[n];
640 else return AV_RL32(buf + n*8);
643 static int rv10_decode_frame(AVCodecContext *avctx,
644 void *data, int *data_size,
647 const uint8_t *buf = avpkt->data;
648 int buf_size = avpkt->size;
649 MpegEncContext *s = avctx->priv_data;
651 AVFrame *pict = data;
653 const uint8_t *slices_hdr = NULL;
655 dprintf(avctx, "*****frame %d size=%d\n", avctx->frame_number, buf_size);
657 /* no supplementary picture */
662 if(!avctx->slice_count){
663 slice_count = (*buf++) + 1;
664 slices_hdr = buf + 4;
665 buf += 8 * slice_count;
667 slice_count = avctx->slice_count;
669 for(i=0; i<slice_count; i++){
670 int offset= get_slice_offset(avctx, slices_hdr, i);
673 if(i+1 == slice_count)
674 size= buf_size - offset;
676 size= get_slice_offset(avctx, slices_hdr, i+1) - offset;
678 if(i+2 >= slice_count)
679 size2= buf_size - offset;
681 size2= get_slice_offset(avctx, slices_hdr, i+2) - offset;
683 if(rv10_decode_packet(avctx, buf+offset, size, size2) > 8*size)
687 if(s->current_picture_ptr != NULL && s->mb_y>=s->mb_height){
691 if (s->pict_type == FF_B_TYPE || s->low_delay) {
692 *pict= *(AVFrame*)s->current_picture_ptr;
693 } else if (s->last_picture_ptr != NULL) {
694 *pict= *(AVFrame*)s->last_picture_ptr;
697 if(s->last_picture_ptr || s->low_delay){
698 *data_size = sizeof(AVFrame);
699 ff_print_debug_info(s, pict);
701 s->current_picture_ptr= NULL; //so we can detect if frame_end wasnt called (find some nicer solution...)
707 AVCodec rv10_decoder = {
711 sizeof(MpegEncContext),
717 .long_name = NULL_IF_CONFIG_SMALL("RealVideo 1.0"),
718 .pix_fmts= ff_pixfmt_list_420,
721 AVCodec rv20_decoder = {
725 sizeof(MpegEncContext),
730 CODEC_CAP_DR1 | CODEC_CAP_DELAY,
731 .flush= ff_mpeg_flush,
732 .long_name = NULL_IF_CONFIG_SMALL("RealVideo 2.0"),
733 .pix_fmts= ff_pixfmt_list_420,