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
28 #include "libavutil/imgutils.h"
31 #include "mpegvideo.h"
32 #include "mpeg4video.h"
37 #define RV_GET_MAJOR_VER(x) ((x) >> 28)
38 #define RV_GET_MINOR_VER(x) (((x) >> 20) & 0xFF)
39 #define RV_GET_MICRO_VER(x) (((x) >> 12) & 0xFF)
41 #define DC_VLC_BITS 14 //FIXME find a better solution
43 static const uint16_t rv_lum_code[256] =
45 0x3e7f, 0x0f00, 0x0f01, 0x0f02, 0x0f03, 0x0f04, 0x0f05, 0x0f06,
46 0x0f07, 0x0f08, 0x0f09, 0x0f0a, 0x0f0b, 0x0f0c, 0x0f0d, 0x0f0e,
47 0x0f0f, 0x0f10, 0x0f11, 0x0f12, 0x0f13, 0x0f14, 0x0f15, 0x0f16,
48 0x0f17, 0x0f18, 0x0f19, 0x0f1a, 0x0f1b, 0x0f1c, 0x0f1d, 0x0f1e,
49 0x0f1f, 0x0f20, 0x0f21, 0x0f22, 0x0f23, 0x0f24, 0x0f25, 0x0f26,
50 0x0f27, 0x0f28, 0x0f29, 0x0f2a, 0x0f2b, 0x0f2c, 0x0f2d, 0x0f2e,
51 0x0f2f, 0x0f30, 0x0f31, 0x0f32, 0x0f33, 0x0f34, 0x0f35, 0x0f36,
52 0x0f37, 0x0f38, 0x0f39, 0x0f3a, 0x0f3b, 0x0f3c, 0x0f3d, 0x0f3e,
53 0x0f3f, 0x0380, 0x0381, 0x0382, 0x0383, 0x0384, 0x0385, 0x0386,
54 0x0387, 0x0388, 0x0389, 0x038a, 0x038b, 0x038c, 0x038d, 0x038e,
55 0x038f, 0x0390, 0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396,
56 0x0397, 0x0398, 0x0399, 0x039a, 0x039b, 0x039c, 0x039d, 0x039e,
57 0x039f, 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6,
58 0x00c7, 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce,
59 0x00cf, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056,
60 0x0057, 0x0020, 0x0021, 0x0022, 0x0023, 0x000c, 0x000d, 0x0004,
61 0x0000, 0x0005, 0x000e, 0x000f, 0x0024, 0x0025, 0x0026, 0x0027,
62 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f,
63 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7,
64 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df,
65 0x03a0, 0x03a1, 0x03a2, 0x03a3, 0x03a4, 0x03a5, 0x03a6, 0x03a7,
66 0x03a8, 0x03a9, 0x03aa, 0x03ab, 0x03ac, 0x03ad, 0x03ae, 0x03af,
67 0x03b0, 0x03b1, 0x03b2, 0x03b3, 0x03b4, 0x03b5, 0x03b6, 0x03b7,
68 0x03b8, 0x03b9, 0x03ba, 0x03bb, 0x03bc, 0x03bd, 0x03be, 0x03bf,
69 0x0f40, 0x0f41, 0x0f42, 0x0f43, 0x0f44, 0x0f45, 0x0f46, 0x0f47,
70 0x0f48, 0x0f49, 0x0f4a, 0x0f4b, 0x0f4c, 0x0f4d, 0x0f4e, 0x0f4f,
71 0x0f50, 0x0f51, 0x0f52, 0x0f53, 0x0f54, 0x0f55, 0x0f56, 0x0f57,
72 0x0f58, 0x0f59, 0x0f5a, 0x0f5b, 0x0f5c, 0x0f5d, 0x0f5e, 0x0f5f,
73 0x0f60, 0x0f61, 0x0f62, 0x0f63, 0x0f64, 0x0f65, 0x0f66, 0x0f67,
74 0x0f68, 0x0f69, 0x0f6a, 0x0f6b, 0x0f6c, 0x0f6d, 0x0f6e, 0x0f6f,
75 0x0f70, 0x0f71, 0x0f72, 0x0f73, 0x0f74, 0x0f75, 0x0f76, 0x0f77,
76 0x0f78, 0x0f79, 0x0f7a, 0x0f7b, 0x0f7c, 0x0f7d, 0x0f7e, 0x0f7f,
79 static const uint8_t rv_lum_bits[256] =
81 14, 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, 12, 12, 12, 12, 12, 12, 12,
85 12, 12, 12, 12, 12, 12, 12, 12,
86 12, 12, 12, 12, 12, 12, 12, 12,
87 12, 12, 12, 12, 12, 12, 12, 12,
88 12, 12, 12, 12, 12, 12, 12, 12,
89 12, 10, 10, 10, 10, 10, 10, 10,
90 10, 10, 10, 10, 10, 10, 10, 10,
91 10, 10, 10, 10, 10, 10, 10, 10,
92 10, 10, 10, 10, 10, 10, 10, 10,
93 10, 8, 8, 8, 8, 8, 8, 8,
94 8, 8, 8, 8, 8, 8, 8, 8,
95 8, 7, 7, 7, 7, 7, 7, 7,
96 7, 6, 6, 6, 6, 5, 5, 4,
97 2, 4, 5, 5, 6, 6, 6, 6,
98 7, 7, 7, 7, 7, 7, 7, 7,
99 8, 8, 8, 8, 8, 8, 8, 8,
100 8, 8, 8, 8, 8, 8, 8, 8,
101 10, 10, 10, 10, 10, 10, 10, 10,
102 10, 10, 10, 10, 10, 10, 10, 10,
103 10, 10, 10, 10, 10, 10, 10, 10,
104 10, 10, 10, 10, 10, 10, 10, 10,
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,
108 12, 12, 12, 12, 12, 12, 12, 12,
109 12, 12, 12, 12, 12, 12, 12, 12,
110 12, 12, 12, 12, 12, 12, 12, 12,
111 12, 12, 12, 12, 12, 12, 12, 12,
112 12, 12, 12, 12, 12, 12, 12, 12,
115 static const uint16_t rv_chrom_code[256] =
117 0xfe7f, 0x3f00, 0x3f01, 0x3f02, 0x3f03, 0x3f04, 0x3f05, 0x3f06,
118 0x3f07, 0x3f08, 0x3f09, 0x3f0a, 0x3f0b, 0x3f0c, 0x3f0d, 0x3f0e,
119 0x3f0f, 0x3f10, 0x3f11, 0x3f12, 0x3f13, 0x3f14, 0x3f15, 0x3f16,
120 0x3f17, 0x3f18, 0x3f19, 0x3f1a, 0x3f1b, 0x3f1c, 0x3f1d, 0x3f1e,
121 0x3f1f, 0x3f20, 0x3f21, 0x3f22, 0x3f23, 0x3f24, 0x3f25, 0x3f26,
122 0x3f27, 0x3f28, 0x3f29, 0x3f2a, 0x3f2b, 0x3f2c, 0x3f2d, 0x3f2e,
123 0x3f2f, 0x3f30, 0x3f31, 0x3f32, 0x3f33, 0x3f34, 0x3f35, 0x3f36,
124 0x3f37, 0x3f38, 0x3f39, 0x3f3a, 0x3f3b, 0x3f3c, 0x3f3d, 0x3f3e,
125 0x3f3f, 0x0f80, 0x0f81, 0x0f82, 0x0f83, 0x0f84, 0x0f85, 0x0f86,
126 0x0f87, 0x0f88, 0x0f89, 0x0f8a, 0x0f8b, 0x0f8c, 0x0f8d, 0x0f8e,
127 0x0f8f, 0x0f90, 0x0f91, 0x0f92, 0x0f93, 0x0f94, 0x0f95, 0x0f96,
128 0x0f97, 0x0f98, 0x0f99, 0x0f9a, 0x0f9b, 0x0f9c, 0x0f9d, 0x0f9e,
129 0x0f9f, 0x03c0, 0x03c1, 0x03c2, 0x03c3, 0x03c4, 0x03c5, 0x03c6,
130 0x03c7, 0x03c8, 0x03c9, 0x03ca, 0x03cb, 0x03cc, 0x03cd, 0x03ce,
131 0x03cf, 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6,
132 0x00e7, 0x0030, 0x0031, 0x0032, 0x0033, 0x0008, 0x0009, 0x0002,
133 0x0000, 0x0003, 0x000a, 0x000b, 0x0034, 0x0035, 0x0036, 0x0037,
134 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef,
135 0x03d0, 0x03d1, 0x03d2, 0x03d3, 0x03d4, 0x03d5, 0x03d6, 0x03d7,
136 0x03d8, 0x03d9, 0x03da, 0x03db, 0x03dc, 0x03dd, 0x03de, 0x03df,
137 0x0fa0, 0x0fa1, 0x0fa2, 0x0fa3, 0x0fa4, 0x0fa5, 0x0fa6, 0x0fa7,
138 0x0fa8, 0x0fa9, 0x0faa, 0x0fab, 0x0fac, 0x0fad, 0x0fae, 0x0faf,
139 0x0fb0, 0x0fb1, 0x0fb2, 0x0fb3, 0x0fb4, 0x0fb5, 0x0fb6, 0x0fb7,
140 0x0fb8, 0x0fb9, 0x0fba, 0x0fbb, 0x0fbc, 0x0fbd, 0x0fbe, 0x0fbf,
141 0x3f40, 0x3f41, 0x3f42, 0x3f43, 0x3f44, 0x3f45, 0x3f46, 0x3f47,
142 0x3f48, 0x3f49, 0x3f4a, 0x3f4b, 0x3f4c, 0x3f4d, 0x3f4e, 0x3f4f,
143 0x3f50, 0x3f51, 0x3f52, 0x3f53, 0x3f54, 0x3f55, 0x3f56, 0x3f57,
144 0x3f58, 0x3f59, 0x3f5a, 0x3f5b, 0x3f5c, 0x3f5d, 0x3f5e, 0x3f5f,
145 0x3f60, 0x3f61, 0x3f62, 0x3f63, 0x3f64, 0x3f65, 0x3f66, 0x3f67,
146 0x3f68, 0x3f69, 0x3f6a, 0x3f6b, 0x3f6c, 0x3f6d, 0x3f6e, 0x3f6f,
147 0x3f70, 0x3f71, 0x3f72, 0x3f73, 0x3f74, 0x3f75, 0x3f76, 0x3f77,
148 0x3f78, 0x3f79, 0x3f7a, 0x3f7b, 0x3f7c, 0x3f7d, 0x3f7e, 0x3f7f,
151 static const uint8_t rv_chrom_bits[256] =
153 16, 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, 14, 14, 14, 14, 14, 14, 14,
157 14, 14, 14, 14, 14, 14, 14, 14,
158 14, 14, 14, 14, 14, 14, 14, 14,
159 14, 14, 14, 14, 14, 14, 14, 14,
160 14, 14, 14, 14, 14, 14, 14, 14,
161 14, 12, 12, 12, 12, 12, 12, 12,
162 12, 12, 12, 12, 12, 12, 12, 12,
163 12, 12, 12, 12, 12, 12, 12, 12,
164 12, 12, 12, 12, 12, 12, 12, 12,
165 12, 10, 10, 10, 10, 10, 10, 10,
166 10, 10, 10, 10, 10, 10, 10, 10,
167 10, 8, 8, 8, 8, 8, 8, 8,
168 8, 6, 6, 6, 6, 4, 4, 3,
169 2, 3, 4, 4, 6, 6, 6, 6,
170 8, 8, 8, 8, 8, 8, 8, 8,
171 10, 10, 10, 10, 10, 10, 10, 10,
172 10, 10, 10, 10, 10, 10, 10, 10,
173 12, 12, 12, 12, 12, 12, 12, 12,
174 12, 12, 12, 12, 12, 12, 12, 12,
175 12, 12, 12, 12, 12, 12, 12, 12,
176 12, 12, 12, 12, 12, 12, 12, 12,
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,
180 14, 14, 14, 14, 14, 14, 14, 14,
181 14, 14, 14, 14, 14, 14, 14, 14,
182 14, 14, 14, 14, 14, 14, 14, 14,
183 14, 14, 14, 14, 14, 14, 14, 14,
184 14, 14, 14, 14, 14, 14, 14, 14,
187 static VLC rv_dc_lum, rv_dc_chrom;
189 int rv_decode_dc(MpegEncContext *s, int n)
194 code = get_vlc2(&s->gb, rv_dc_lum.table, DC_VLC_BITS, 2);
196 /* XXX: I don't understand why they use LONGER codes than
197 necessary. The following code would be completely useless
198 if they had thought about it !!! */
199 code = get_bits(&s->gb, 7);
201 code = (int8_t)(get_bits(&s->gb, 7) + 1);
202 } else if (code == 0x7d) {
203 code = -128 + get_bits(&s->gb, 7);
204 } else if (code == 0x7e) {
205 if (get_bits1(&s->gb) == 0)
206 code = (int8_t)(get_bits(&s->gb, 8) + 1);
208 code = (int8_t)(get_bits(&s->gb, 8));
209 } else if (code == 0x7f) {
210 skip_bits(&s->gb, 11);
217 code = get_vlc2(&s->gb, rv_dc_chrom.table, DC_VLC_BITS, 2);
220 code = get_bits(&s->gb, 9);
222 code = (int8_t)(get_bits(&s->gb, 7) + 1);
223 } else if (code == 0x1fd) {
224 code = -128 + get_bits(&s->gb, 7);
225 } else if (code == 0x1fe) {
226 skip_bits(&s->gb, 9);
229 av_log(s->avctx, AV_LOG_ERROR, "chroma dc error\n");
239 /* read RV 1.0 compatible frame header */
240 static int rv10_decode_picture_header(MpegEncContext *s)
242 int mb_count, pb_frame, marker, mb_xy;
244 marker = get_bits1(&s->gb);
246 if (get_bits1(&s->gb))
247 s->pict_type = AV_PICTURE_TYPE_P;
249 s->pict_type = AV_PICTURE_TYPE_I;
250 if(!marker) av_log(s->avctx, AV_LOG_ERROR, "marker missing\n");
251 pb_frame = get_bits1(&s->gb);
253 av_dlog(s->avctx, "pict_type=%d pb_frame=%d\n", s->pict_type, pb_frame);
256 av_log(s->avctx, AV_LOG_ERROR, "pb frame not supported\n");
260 s->qscale = get_bits(&s->gb, 5);
262 av_log(s->avctx, AV_LOG_ERROR, "error, qscale:0\n");
266 if (s->pict_type == AV_PICTURE_TYPE_I) {
267 if (s->rv10_version == 3) {
268 /* specific MPEG like DC coding not used */
269 s->last_dc[0] = get_bits(&s->gb, 8);
270 s->last_dc[1] = get_bits(&s->gb, 8);
271 s->last_dc[2] = get_bits(&s->gb, 8);
272 av_dlog(s->avctx, "DC:%d %d %d\n", s->last_dc[0],
273 s->last_dc[1], s->last_dc[2]);
276 /* if multiple packets per frame are sent, the position at which
277 to display the macroblocks is coded here */
279 mb_xy= s->mb_x + s->mb_y*s->mb_width;
280 if(show_bits(&s->gb, 12)==0 || (mb_xy && mb_xy < s->mb_num)){
281 s->mb_x = get_bits(&s->gb, 6); /* mb_x */
282 s->mb_y = get_bits(&s->gb, 6); /* mb_y */
283 mb_count = get_bits(&s->gb, 12);
287 mb_count = s->mb_width * s->mb_height;
289 skip_bits(&s->gb, 3); /* ignored */
291 s->unrestricted_mv = 1;
296 static int rv20_decode_picture_header(MpegEncContext *s)
302 GetBitContext gb= s->gb;
304 av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&gb));
305 if(i%4==3) av_log(s->avctx, AV_LOG_DEBUG, " ");
307 av_log(s->avctx, AV_LOG_DEBUG, "\n");
310 av_log(s->avctx, AV_LOG_DEBUG, "%3dx%03d/%02Xx%02X ", s->width, s->height, s->width/4, s->height/4);
311 for(i=0; i<s->avctx->extradata_size; i++){
312 av_log(s->avctx, AV_LOG_DEBUG, "%02X ", ((uint8_t*)s->avctx->extradata)[i]);
313 if(i%4==3) av_log(s->avctx, AV_LOG_DEBUG, " ");
315 av_log(s->avctx, AV_LOG_DEBUG, "\n");
318 i= get_bits(&s->gb, 2);
320 case 0: s->pict_type= AV_PICTURE_TYPE_I; break;
321 case 1: s->pict_type= AV_PICTURE_TYPE_I; break; //hmm ...
322 case 2: s->pict_type= AV_PICTURE_TYPE_P; break;
323 case 3: s->pict_type= AV_PICTURE_TYPE_B; break;
325 av_log(s->avctx, AV_LOG_ERROR, "unknown frame type\n");
329 if(s->last_picture_ptr==NULL && s->pict_type==AV_PICTURE_TYPE_B){
330 av_log(s->avctx, AV_LOG_ERROR, "early B pix\n");
334 if (get_bits1(&s->gb)){
335 av_log(s->avctx, AV_LOG_ERROR, "reserved bit set\n");
339 s->qscale = get_bits(&s->gb, 5);
341 av_log(s->avctx, AV_LOG_ERROR, "error, qscale:0\n");
345 if(RV_GET_MINOR_VER(s->avctx->sub_id) >= 2)
346 s->loop_filter = get_bits1(&s->gb);
348 if(RV_GET_MINOR_VER(s->avctx->sub_id) <= 1)
349 seq = get_bits(&s->gb, 8) << 7;
351 seq = get_bits(&s->gb, 13) << 2;
353 rpr_bits = s->avctx->extradata[1] & 7;
356 rpr_bits = FFMIN((rpr_bits >> 1) + 1, 3);
358 f = get_bits(&s->gb, rpr_bits);
361 new_w= 4*((uint8_t*)s->avctx->extradata)[6+2*f];
362 new_h= 4*((uint8_t*)s->avctx->extradata)[7+2*f];
364 new_w= s->orig_width ;
365 new_h= s->orig_height;
367 if(new_w != s->width || new_h != s->height){
368 av_log(s->avctx, AV_LOG_DEBUG, "attempting to change resolution to %dx%d\n", new_w, new_h);
369 if (av_image_check_size(new_w, new_h, 0, s->avctx) < 0)
372 avcodec_set_dimensions(s->avctx, new_w, new_h);
375 if (MPV_common_init(s) < 0)
379 if(s->avctx->debug & FF_DEBUG_PICT_INFO){
380 av_log(s->avctx, AV_LOG_DEBUG, "F %d/%d\n", f, rpr_bits);
384 mb_pos = ff_h263_decode_mba(s);
386 //av_log(s->avctx, AV_LOG_DEBUG, "%d\n", seq);
387 seq |= s->time &~0x7FFF;
388 if(seq - s->time > 0x4000) seq -= 0x8000;
389 if(seq - s->time < -0x4000) seq += 0x8000;
391 if(s->pict_type!=AV_PICTURE_TYPE_B){
393 s->pp_time= s->time - s->last_non_b_time;
394 s->last_non_b_time= s->time;
397 s->pb_time= s->pp_time - (s->last_non_b_time - s->time);
398 if(s->pp_time <=s->pb_time || s->pp_time <= s->pp_time - s->pb_time || s->pp_time<=0){
399 av_log(s->avctx, AV_LOG_DEBUG, "messed up order, possible from seeking? skipping current b frame\n");
400 return FRAME_SKIPPED;
402 ff_mpeg4_init_direct_mv(s);
405 // printf("%d %d %d %d %d\n", seq, (int)s->time, (int)s->last_non_b_time, s->pp_time, s->pb_time);
406 /*for(i=0; i<32; i++){
407 av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&s->gb));
409 av_log(s->avctx, AV_LOG_DEBUG, "\n");*/
410 s->no_rounding= get_bits1(&s->gb);
412 if(RV_GET_MINOR_VER(s->avctx->sub_id) <= 1 && s->pict_type == AV_PICTURE_TYPE_B)
413 skip_bits(&s->gb, 5); // binary decoder reads 3+2 bits here but they don't seem to be used
416 s->unrestricted_mv = 1;
417 s->h263_aic= s->pict_type == AV_PICTURE_TYPE_I;
418 // s->alt_inter_vlc=1;
422 if(!s->avctx->lowres)
425 if(s->avctx->debug & FF_DEBUG_PICT_INFO){
426 av_log(s->avctx, AV_LOG_INFO, "num:%5d x:%2d y:%2d type:%d qscale:%2d rnd:%d\n",
427 seq, s->mb_x, s->mb_y, s->pict_type, s->qscale, s->no_rounding);
430 assert(s->pict_type != AV_PICTURE_TYPE_B || !s->low_delay);
432 return s->mb_width*s->mb_height - mb_pos;
435 static av_cold int rv10_decode_init(AVCodecContext *avctx)
437 MpegEncContext *s = avctx->priv_data;
439 int major_ver, minor_ver, micro_ver;
441 if (avctx->extradata_size < 8) {
442 av_log(avctx, AV_LOG_ERROR, "Extradata is too small.\n");
446 MPV_decode_defaults(s);
449 s->out_format = FMT_H263;
450 s->codec_id= avctx->codec_id;
452 s->orig_width = s->width = avctx->coded_width;
453 s->orig_height= s->height = avctx->coded_height;
455 s->h263_long_vectors= ((uint8_t*)avctx->extradata)[3] & 1;
456 avctx->sub_id= AV_RB32((uint8_t*)avctx->extradata + 4);
458 major_ver = RV_GET_MAJOR_VER(avctx->sub_id);
459 minor_ver = RV_GET_MINOR_VER(avctx->sub_id);
460 micro_ver = RV_GET_MICRO_VER(avctx->sub_id);
465 s->rv10_version = micro_ver ? 3 : 1;
466 s->obmc = micro_ver == 2;
469 if (minor_ver >= 2) {
471 s->avctx->has_b_frames = 1;
475 av_log(s->avctx, AV_LOG_ERROR, "unknown header %X\n", avctx->sub_id);
476 av_log_missing_feature(avctx, "RV1/2 version", 1);
477 return AVERROR_PATCHWELCOME;
480 if(avctx->debug & FF_DEBUG_PICT_INFO){
481 av_log(avctx, AV_LOG_DEBUG, "ver:%X ver0:%X\n", avctx->sub_id, avctx->extradata_size >= 4 ? ((uint32_t*)avctx->extradata)[0] : -1);
484 avctx->pix_fmt = PIX_FMT_YUV420P;
486 if (MPV_common_init(s) < 0)
489 h263_decode_init_vlc(s);
493 INIT_VLC_STATIC(&rv_dc_lum, DC_VLC_BITS, 256,
495 rv_lum_code, 2, 2, 16384);
496 INIT_VLC_STATIC(&rv_dc_chrom, DC_VLC_BITS, 256,
498 rv_chrom_code, 2, 2, 16388);
505 static av_cold int rv10_decode_end(AVCodecContext *avctx)
507 MpegEncContext *s = avctx->priv_data;
513 static int rv10_decode_packet(AVCodecContext *avctx,
514 const uint8_t *buf, int buf_size, int buf_size2)
516 MpegEncContext *s = avctx->priv_data;
517 int mb_count, mb_pos, left, start_mb_x;
519 init_get_bits(&s->gb, buf, buf_size*8);
520 if(s->codec_id ==CODEC_ID_RV10)
521 mb_count = rv10_decode_picture_header(s);
523 mb_count = rv20_decode_picture_header(s);
525 av_log(s->avctx, AV_LOG_ERROR, "HEADER ERROR\n");
529 if (s->mb_x >= s->mb_width ||
530 s->mb_y >= s->mb_height) {
531 av_log(s->avctx, AV_LOG_ERROR, "POS ERROR %d %d\n", s->mb_x, s->mb_y);
534 mb_pos = s->mb_y * s->mb_width + s->mb_x;
535 left = s->mb_width * s->mb_height - mb_pos;
536 if (mb_count > left) {
537 av_log(s->avctx, AV_LOG_ERROR, "COUNT ERROR\n");
541 if ((s->mb_x == 0 && s->mb_y == 0) || s->current_picture_ptr==NULL) {
542 if(s->current_picture_ptr){ //FIXME write parser so we always have complete frames?
545 s->mb_x= s->mb_y = s->resync_mb_x = s->resync_mb_y= 0;
547 if(MPV_frame_start(s, avctx) < 0)
549 ff_er_frame_start(s);
551 if (s->current_picture_ptr->f.pict_type != s->pict_type)
556 av_dlog(avctx, "qscale=%d\n", s->qscale);
558 /* default quantization values */
559 if(s->codec_id== CODEC_ID_RV10){
560 if(s->mb_y==0) s->first_slice_line=1;
562 s->first_slice_line=1;
563 s->resync_mb_x= s->mb_x;
566 s->resync_mb_y= s->mb_y;
569 s->c_dc_scale_table= ff_aic_dc_scale_table;
572 s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
575 if(s->modified_quant)
576 s->chroma_qscale_table= ff_h263_chroma_qscale_table;
578 ff_set_qscale(s, s->qscale);
580 s->rv10_first_dc_coded[0] = 0;
581 s->rv10_first_dc_coded[1] = 0;
582 s->rv10_first_dc_coded[2] = 0;
586 s->block_wrap[3]= s->b8_stride;
588 s->block_wrap[5]= s->mb_stride;
589 ff_init_block_index(s);
590 /* decode each macroblock */
592 for(s->mb_num_left= mb_count; s->mb_num_left>0; s->mb_num_left--) {
594 ff_update_block_index(s);
595 av_dlog(avctx, "**mb x=%d y=%d\n", s->mb_x, s->mb_y);
597 s->mv_dir = MV_DIR_FORWARD;
598 s->mv_type = MV_TYPE_16X16;
599 ret=ff_h263_decode_mb(s, s->block);
601 if (ret != SLICE_ERROR && s->gb.size_in_bits < get_bits_count(&s->gb) && 8*buf_size2 >= get_bits_count(&s->gb)){
602 av_log(avctx, AV_LOG_DEBUG, "update size from %d to %d\n", s->gb.size_in_bits, 8*buf_size2);
603 s->gb.size_in_bits= 8*buf_size2;
607 if (ret == SLICE_ERROR || s->gb.size_in_bits < get_bits_count(&s->gb)) {
608 av_log(s->avctx, AV_LOG_ERROR, "ERROR at MB %d %d\n", s->mb_x, s->mb_y);
611 if(s->pict_type != AV_PICTURE_TYPE_B)
612 ff_h263_update_motion_val(s);
613 MPV_decode_mb(s, s->block);
615 ff_h263_loop_filter(s);
617 if (++s->mb_x == s->mb_width) {
620 ff_init_block_index(s);
622 if(s->mb_x == s->resync_mb_x)
623 s->first_slice_line=0;
624 if(ret == SLICE_END) break;
627 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);
629 return s->gb.size_in_bits;
632 static int get_slice_offset(AVCodecContext *avctx, const uint8_t *buf, int n)
634 if(avctx->slice_count) return avctx->slice_offset[n];
635 else return AV_RL32(buf + n*8);
638 static int rv10_decode_frame(AVCodecContext *avctx,
639 void *data, int *data_size,
642 const uint8_t *buf = avpkt->data;
643 int buf_size = avpkt->size;
644 MpegEncContext *s = avctx->priv_data;
646 AVFrame *pict = data;
648 const uint8_t *slices_hdr = NULL;
650 av_dlog(avctx, "*****frame %d size=%d\n", avctx->frame_number, buf_size);
651 s->flags = avctx->flags;
652 s->flags2 = avctx->flags2;
654 /* no supplementary picture */
659 if(!avctx->slice_count){
660 slice_count = (*buf++) + 1;
661 slices_hdr = buf + 4;
662 buf += 8 * slice_count;
664 slice_count = avctx->slice_count;
666 for(i=0; i<slice_count; i++){
667 int offset= get_slice_offset(avctx, slices_hdr, i);
670 if(i+1 == slice_count)
671 size= buf_size - offset;
673 size= get_slice_offset(avctx, slices_hdr, i+1) - offset;
675 if(i+2 >= slice_count)
676 size2= buf_size - offset;
678 size2= get_slice_offset(avctx, slices_hdr, i+2) - offset;
680 if(rv10_decode_packet(avctx, buf+offset, size, size2) > 8*size)
684 if(s->current_picture_ptr != NULL && s->mb_y>=s->mb_height){
688 if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
689 *pict= *(AVFrame*)s->current_picture_ptr;
690 } else if (s->last_picture_ptr != NULL) {
691 *pict= *(AVFrame*)s->last_picture_ptr;
694 if(s->last_picture_ptr || s->low_delay){
695 *data_size = sizeof(AVFrame);
696 ff_print_debug_info(s, pict);
698 s->current_picture_ptr= NULL; //so we can detect if frame_end wasnt called (find some nicer solution...)
704 AVCodec ff_rv10_decoder = {
706 .type = AVMEDIA_TYPE_VIDEO,
708 .priv_data_size = sizeof(MpegEncContext),
709 .init = rv10_decode_init,
710 .close = rv10_decode_end,
711 .decode = rv10_decode_frame,
712 .capabilities = CODEC_CAP_DR1,
714 .long_name = NULL_IF_CONFIG_SMALL("RealVideo 1.0"),
715 .pix_fmts= ff_pixfmt_list_420,
718 AVCodec ff_rv20_decoder = {
720 .type = AVMEDIA_TYPE_VIDEO,
722 .priv_data_size = sizeof(MpegEncContext),
723 .init = rv10_decode_init,
724 .close = rv10_decode_end,
725 .decode = rv10_decode_frame,
726 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
727 .flush= ff_mpeg_flush,
729 .long_name = NULL_IF_CONFIG_SMALL("RealVideo 2.0"),
730 .pix_fmts= ff_pixfmt_list_420,