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);
382 } else if (av_image_check_size(s->width, s->height, 0, s->avctx) < 0)
383 return AVERROR_INVALIDDATA;
385 mb_pos = ff_h263_decode_mba(s);
387 //av_log(s->avctx, AV_LOG_DEBUG, "%d\n", seq);
388 seq |= s->time &~0x7FFF;
389 if(seq - s->time > 0x4000) seq -= 0x8000;
390 if(seq - s->time < -0x4000) seq += 0x8000;
392 if(s->pict_type!=AV_PICTURE_TYPE_B){
394 s->pp_time= s->time - s->last_non_b_time;
395 s->last_non_b_time= s->time;
398 s->pb_time= s->pp_time - (s->last_non_b_time - s->time);
399 if(s->pp_time <=s->pb_time || s->pp_time <= s->pp_time - s->pb_time || s->pp_time<=0){
400 av_log(s->avctx, AV_LOG_DEBUG, "messed up order, possible from seeking? skipping current b frame\n");
401 return FRAME_SKIPPED;
403 ff_mpeg4_init_direct_mv(s);
406 // printf("%d %d %d %d %d\n", seq, (int)s->time, (int)s->last_non_b_time, s->pp_time, s->pb_time);
407 /*for(i=0; i<32; i++){
408 av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&s->gb));
410 av_log(s->avctx, AV_LOG_DEBUG, "\n");*/
411 s->no_rounding= get_bits1(&s->gb);
413 if(RV_GET_MINOR_VER(s->avctx->sub_id) <= 1 && s->pict_type == AV_PICTURE_TYPE_B)
414 skip_bits(&s->gb, 5); // binary decoder reads 3+2 bits here but they don't seem to be used
417 s->unrestricted_mv = 1;
418 s->h263_aic= s->pict_type == AV_PICTURE_TYPE_I;
419 // s->alt_inter_vlc=1;
423 if(!s->avctx->lowres)
426 if(s->avctx->debug & FF_DEBUG_PICT_INFO){
427 av_log(s->avctx, AV_LOG_INFO, "num:%5d x:%2d y:%2d type:%d qscale:%2d rnd:%d\n",
428 seq, s->mb_x, s->mb_y, s->pict_type, s->qscale, s->no_rounding);
431 assert(s->pict_type != AV_PICTURE_TYPE_B || !s->low_delay);
433 return s->mb_width*s->mb_height - mb_pos;
436 static av_cold int rv10_decode_init(AVCodecContext *avctx)
438 MpegEncContext *s = avctx->priv_data;
440 int major_ver, minor_ver, micro_ver;
442 if (avctx->extradata_size < 8) {
443 av_log(avctx, AV_LOG_ERROR, "Extradata is too small.\n");
447 MPV_decode_defaults(s);
450 s->out_format = FMT_H263;
451 s->codec_id= avctx->codec_id;
453 s->orig_width = s->width = avctx->coded_width;
454 s->orig_height= s->height = avctx->coded_height;
456 s->h263_long_vectors= ((uint8_t*)avctx->extradata)[3] & 1;
457 avctx->sub_id= AV_RB32((uint8_t*)avctx->extradata + 4);
459 major_ver = RV_GET_MAJOR_VER(avctx->sub_id);
460 minor_ver = RV_GET_MINOR_VER(avctx->sub_id);
461 micro_ver = RV_GET_MICRO_VER(avctx->sub_id);
466 s->rv10_version = micro_ver ? 3 : 1;
467 s->obmc = micro_ver == 2;
470 if (minor_ver >= 2) {
472 s->avctx->has_b_frames = 1;
476 av_log(s->avctx, AV_LOG_ERROR, "unknown header %X\n", avctx->sub_id);
477 av_log_missing_feature(avctx, "RV1/2 version", 1);
478 return AVERROR_PATCHWELCOME;
481 if(avctx->debug & FF_DEBUG_PICT_INFO){
482 av_log(avctx, AV_LOG_DEBUG, "ver:%X ver0:%X\n", avctx->sub_id, avctx->extradata_size >= 4 ? ((uint32_t*)avctx->extradata)[0] : -1);
485 avctx->pix_fmt = PIX_FMT_YUV420P;
487 if (MPV_common_init(s) < 0)
490 h263_decode_init_vlc(s);
494 INIT_VLC_STATIC(&rv_dc_lum, DC_VLC_BITS, 256,
496 rv_lum_code, 2, 2, 16384);
497 INIT_VLC_STATIC(&rv_dc_chrom, DC_VLC_BITS, 256,
499 rv_chrom_code, 2, 2, 16388);
506 static av_cold int rv10_decode_end(AVCodecContext *avctx)
508 MpegEncContext *s = avctx->priv_data;
514 static int rv10_decode_packet(AVCodecContext *avctx,
515 const uint8_t *buf, int buf_size, int buf_size2)
517 MpegEncContext *s = avctx->priv_data;
518 int mb_count, mb_pos, left, start_mb_x;
520 init_get_bits(&s->gb, buf, buf_size*8);
521 if(s->codec_id ==CODEC_ID_RV10)
522 mb_count = rv10_decode_picture_header(s);
524 mb_count = rv20_decode_picture_header(s);
526 av_log(s->avctx, AV_LOG_ERROR, "HEADER ERROR\n");
530 if (s->mb_x >= s->mb_width ||
531 s->mb_y >= s->mb_height) {
532 av_log(s->avctx, AV_LOG_ERROR, "POS ERROR %d %d\n", s->mb_x, s->mb_y);
535 mb_pos = s->mb_y * s->mb_width + s->mb_x;
536 left = s->mb_width * s->mb_height - mb_pos;
537 if (mb_count > left) {
538 av_log(s->avctx, AV_LOG_ERROR, "COUNT ERROR\n");
542 if ((s->mb_x == 0 && s->mb_y == 0) || s->current_picture_ptr==NULL) {
543 if(s->current_picture_ptr){ //FIXME write parser so we always have complete frames?
546 s->mb_x= s->mb_y = s->resync_mb_x = s->resync_mb_y= 0;
548 if(MPV_frame_start(s, avctx) < 0)
550 ff_er_frame_start(s);
552 if (s->current_picture_ptr->f.pict_type != s->pict_type) {
553 av_log(s->avctx, AV_LOG_ERROR, "Slice type mismatch\n");
559 av_dlog(avctx, "qscale=%d\n", s->qscale);
561 /* default quantization values */
562 if(s->codec_id== CODEC_ID_RV10){
563 if(s->mb_y==0) s->first_slice_line=1;
565 s->first_slice_line=1;
566 s->resync_mb_x= s->mb_x;
569 s->resync_mb_y= s->mb_y;
572 s->c_dc_scale_table= ff_aic_dc_scale_table;
575 s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
578 if(s->modified_quant)
579 s->chroma_qscale_table= ff_h263_chroma_qscale_table;
581 ff_set_qscale(s, s->qscale);
583 s->rv10_first_dc_coded[0] = 0;
584 s->rv10_first_dc_coded[1] = 0;
585 s->rv10_first_dc_coded[2] = 0;
589 s->block_wrap[3]= s->b8_stride;
591 s->block_wrap[5]= s->mb_stride;
592 ff_init_block_index(s);
593 /* decode each macroblock */
595 for(s->mb_num_left= mb_count; s->mb_num_left>0; s->mb_num_left--) {
597 ff_update_block_index(s);
598 av_dlog(avctx, "**mb x=%d y=%d\n", s->mb_x, s->mb_y);
600 s->mv_dir = MV_DIR_FORWARD;
601 s->mv_type = MV_TYPE_16X16;
602 ret=ff_h263_decode_mb(s, s->block);
604 if (ret != SLICE_ERROR && s->gb.size_in_bits < get_bits_count(&s->gb) && 8*buf_size2 >= get_bits_count(&s->gb)){
605 av_log(avctx, AV_LOG_DEBUG, "update size from %d to %d\n", s->gb.size_in_bits, 8*buf_size2);
606 s->gb.size_in_bits= 8*buf_size2;
610 if (ret == SLICE_ERROR || s->gb.size_in_bits < get_bits_count(&s->gb)) {
611 av_log(s->avctx, AV_LOG_ERROR, "ERROR at MB %d %d\n", s->mb_x, s->mb_y);
614 if(s->pict_type != AV_PICTURE_TYPE_B)
615 ff_h263_update_motion_val(s);
616 MPV_decode_mb(s, s->block);
618 ff_h263_loop_filter(s);
620 if (++s->mb_x == s->mb_width) {
623 ff_init_block_index(s);
625 if(s->mb_x == s->resync_mb_x)
626 s->first_slice_line=0;
627 if(ret == SLICE_END) break;
630 ff_er_add_slice(s, start_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_END);
632 return s->gb.size_in_bits;
635 static int get_slice_offset(AVCodecContext *avctx, const uint8_t *buf, int n)
637 if(avctx->slice_count) return avctx->slice_offset[n];
638 else return AV_RL32(buf + n*8);
641 static int rv10_decode_frame(AVCodecContext *avctx,
642 void *data, int *data_size,
645 const uint8_t *buf = avpkt->data;
646 int buf_size = avpkt->size;
647 MpegEncContext *s = avctx->priv_data;
649 AVFrame *pict = data;
651 const uint8_t *slices_hdr = NULL;
653 av_dlog(avctx, "*****frame %d size=%d\n", avctx->frame_number, buf_size);
654 s->flags = avctx->flags;
655 s->flags2 = avctx->flags2;
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 unsigned offset = get_slice_offset(avctx, slices_hdr, i);
673 if (offset >= buf_size)
674 return AVERROR_INVALIDDATA;
676 if(i+1 == slice_count)
677 size= buf_size - offset;
679 size= get_slice_offset(avctx, slices_hdr, i+1) - offset;
681 if(i+2 >= slice_count)
682 size2= buf_size - offset;
684 size2= get_slice_offset(avctx, slices_hdr, i+2) - offset;
686 if (size <= 0 || size2 <= 0 ||
687 offset + FFMAX(size, size2) > buf_size)
688 return AVERROR_INVALIDDATA;
690 if(rv10_decode_packet(avctx, buf+offset, size, size2) > 8*size)
694 if(s->current_picture_ptr != NULL && s->mb_y>=s->mb_height){
698 if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
699 *pict= *(AVFrame*)s->current_picture_ptr;
700 } else if (s->last_picture_ptr != NULL) {
701 *pict= *(AVFrame*)s->last_picture_ptr;
704 if(s->last_picture_ptr || s->low_delay){
705 *data_size = sizeof(AVFrame);
706 ff_print_debug_info(s, pict);
708 s->current_picture_ptr= NULL; //so we can detect if frame_end wasnt called (find some nicer solution...)
714 AVCodec ff_rv10_decoder = {
716 .type = AVMEDIA_TYPE_VIDEO,
718 .priv_data_size = sizeof(MpegEncContext),
719 .init = rv10_decode_init,
720 .close = rv10_decode_end,
721 .decode = rv10_decode_frame,
722 .capabilities = CODEC_CAP_DR1,
724 .long_name = NULL_IF_CONFIG_SMALL("RealVideo 1.0"),
725 .pix_fmts= ff_pixfmt_list_420,
728 AVCodec ff_rv20_decoder = {
730 .type = AVMEDIA_TYPE_VIDEO,
732 .priv_data_size = sizeof(MpegEncContext),
733 .init = rv10_decode_init,
734 .close = rv10_decode_end,
735 .decode = rv10_decode_frame,
736 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
737 .flush= ff_mpeg_flush,
739 .long_name = NULL_IF_CONFIG_SMALL("RealVideo 2.0"),
740 .pix_fmts= ff_pixfmt_list_420,