3 * Copyright (c) 2000,2001 Fabrice Bellard.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include "mpegvideo.h"
25 #define DC_VLC_BITS 14 //FIXME find a better solution
27 static const uint16_t rv_lum_code[256] =
29 0x3e7f, 0x0f00, 0x0f01, 0x0f02, 0x0f03, 0x0f04, 0x0f05, 0x0f06,
30 0x0f07, 0x0f08, 0x0f09, 0x0f0a, 0x0f0b, 0x0f0c, 0x0f0d, 0x0f0e,
31 0x0f0f, 0x0f10, 0x0f11, 0x0f12, 0x0f13, 0x0f14, 0x0f15, 0x0f16,
32 0x0f17, 0x0f18, 0x0f19, 0x0f1a, 0x0f1b, 0x0f1c, 0x0f1d, 0x0f1e,
33 0x0f1f, 0x0f20, 0x0f21, 0x0f22, 0x0f23, 0x0f24, 0x0f25, 0x0f26,
34 0x0f27, 0x0f28, 0x0f29, 0x0f2a, 0x0f2b, 0x0f2c, 0x0f2d, 0x0f2e,
35 0x0f2f, 0x0f30, 0x0f31, 0x0f32, 0x0f33, 0x0f34, 0x0f35, 0x0f36,
36 0x0f37, 0x0f38, 0x0f39, 0x0f3a, 0x0f3b, 0x0f3c, 0x0f3d, 0x0f3e,
37 0x0f3f, 0x0380, 0x0381, 0x0382, 0x0383, 0x0384, 0x0385, 0x0386,
38 0x0387, 0x0388, 0x0389, 0x038a, 0x038b, 0x038c, 0x038d, 0x038e,
39 0x038f, 0x0390, 0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396,
40 0x0397, 0x0398, 0x0399, 0x039a, 0x039b, 0x039c, 0x039d, 0x039e,
41 0x039f, 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6,
42 0x00c7, 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce,
43 0x00cf, 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056,
44 0x0057, 0x0020, 0x0021, 0x0022, 0x0023, 0x000c, 0x000d, 0x0004,
45 0x0000, 0x0005, 0x000e, 0x000f, 0x0024, 0x0025, 0x0026, 0x0027,
46 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f,
47 0x00d0, 0x00d1, 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7,
48 0x00d8, 0x00d9, 0x00da, 0x00db, 0x00dc, 0x00dd, 0x00de, 0x00df,
49 0x03a0, 0x03a1, 0x03a2, 0x03a3, 0x03a4, 0x03a5, 0x03a6, 0x03a7,
50 0x03a8, 0x03a9, 0x03aa, 0x03ab, 0x03ac, 0x03ad, 0x03ae, 0x03af,
51 0x03b0, 0x03b1, 0x03b2, 0x03b3, 0x03b4, 0x03b5, 0x03b6, 0x03b7,
52 0x03b8, 0x03b9, 0x03ba, 0x03bb, 0x03bc, 0x03bd, 0x03be, 0x03bf,
53 0x0f40, 0x0f41, 0x0f42, 0x0f43, 0x0f44, 0x0f45, 0x0f46, 0x0f47,
54 0x0f48, 0x0f49, 0x0f4a, 0x0f4b, 0x0f4c, 0x0f4d, 0x0f4e, 0x0f4f,
55 0x0f50, 0x0f51, 0x0f52, 0x0f53, 0x0f54, 0x0f55, 0x0f56, 0x0f57,
56 0x0f58, 0x0f59, 0x0f5a, 0x0f5b, 0x0f5c, 0x0f5d, 0x0f5e, 0x0f5f,
57 0x0f60, 0x0f61, 0x0f62, 0x0f63, 0x0f64, 0x0f65, 0x0f66, 0x0f67,
58 0x0f68, 0x0f69, 0x0f6a, 0x0f6b, 0x0f6c, 0x0f6d, 0x0f6e, 0x0f6f,
59 0x0f70, 0x0f71, 0x0f72, 0x0f73, 0x0f74, 0x0f75, 0x0f76, 0x0f77,
60 0x0f78, 0x0f79, 0x0f7a, 0x0f7b, 0x0f7c, 0x0f7d, 0x0f7e, 0x0f7f,
63 static const uint8_t rv_lum_bits[256] =
65 14, 12, 12, 12, 12, 12, 12, 12,
66 12, 12, 12, 12, 12, 12, 12, 12,
67 12, 12, 12, 12, 12, 12, 12, 12,
68 12, 12, 12, 12, 12, 12, 12, 12,
69 12, 12, 12, 12, 12, 12, 12, 12,
70 12, 12, 12, 12, 12, 12, 12, 12,
71 12, 12, 12, 12, 12, 12, 12, 12,
72 12, 12, 12, 12, 12, 12, 12, 12,
73 12, 10, 10, 10, 10, 10, 10, 10,
74 10, 10, 10, 10, 10, 10, 10, 10,
75 10, 10, 10, 10, 10, 10, 10, 10,
76 10, 10, 10, 10, 10, 10, 10, 10,
77 10, 8, 8, 8, 8, 8, 8, 8,
78 8, 8, 8, 8, 8, 8, 8, 8,
79 8, 7, 7, 7, 7, 7, 7, 7,
80 7, 6, 6, 6, 6, 5, 5, 4,
81 2, 4, 5, 5, 6, 6, 6, 6,
82 7, 7, 7, 7, 7, 7, 7, 7,
83 8, 8, 8, 8, 8, 8, 8, 8,
84 8, 8, 8, 8, 8, 8, 8, 8,
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, 10, 10, 10, 10, 10, 10, 10,
89 12, 12, 12, 12, 12, 12, 12, 12,
90 12, 12, 12, 12, 12, 12, 12, 12,
91 12, 12, 12, 12, 12, 12, 12, 12,
92 12, 12, 12, 12, 12, 12, 12, 12,
93 12, 12, 12, 12, 12, 12, 12, 12,
94 12, 12, 12, 12, 12, 12, 12, 12,
95 12, 12, 12, 12, 12, 12, 12, 12,
96 12, 12, 12, 12, 12, 12, 12, 12,
99 static const uint16_t rv_chrom_code[256] =
101 0xfe7f, 0x3f00, 0x3f01, 0x3f02, 0x3f03, 0x3f04, 0x3f05, 0x3f06,
102 0x3f07, 0x3f08, 0x3f09, 0x3f0a, 0x3f0b, 0x3f0c, 0x3f0d, 0x3f0e,
103 0x3f0f, 0x3f10, 0x3f11, 0x3f12, 0x3f13, 0x3f14, 0x3f15, 0x3f16,
104 0x3f17, 0x3f18, 0x3f19, 0x3f1a, 0x3f1b, 0x3f1c, 0x3f1d, 0x3f1e,
105 0x3f1f, 0x3f20, 0x3f21, 0x3f22, 0x3f23, 0x3f24, 0x3f25, 0x3f26,
106 0x3f27, 0x3f28, 0x3f29, 0x3f2a, 0x3f2b, 0x3f2c, 0x3f2d, 0x3f2e,
107 0x3f2f, 0x3f30, 0x3f31, 0x3f32, 0x3f33, 0x3f34, 0x3f35, 0x3f36,
108 0x3f37, 0x3f38, 0x3f39, 0x3f3a, 0x3f3b, 0x3f3c, 0x3f3d, 0x3f3e,
109 0x3f3f, 0x0f80, 0x0f81, 0x0f82, 0x0f83, 0x0f84, 0x0f85, 0x0f86,
110 0x0f87, 0x0f88, 0x0f89, 0x0f8a, 0x0f8b, 0x0f8c, 0x0f8d, 0x0f8e,
111 0x0f8f, 0x0f90, 0x0f91, 0x0f92, 0x0f93, 0x0f94, 0x0f95, 0x0f96,
112 0x0f97, 0x0f98, 0x0f99, 0x0f9a, 0x0f9b, 0x0f9c, 0x0f9d, 0x0f9e,
113 0x0f9f, 0x03c0, 0x03c1, 0x03c2, 0x03c3, 0x03c4, 0x03c5, 0x03c6,
114 0x03c7, 0x03c8, 0x03c9, 0x03ca, 0x03cb, 0x03cc, 0x03cd, 0x03ce,
115 0x03cf, 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, 0x00e6,
116 0x00e7, 0x0030, 0x0031, 0x0032, 0x0033, 0x0008, 0x0009, 0x0002,
117 0x0000, 0x0003, 0x000a, 0x000b, 0x0034, 0x0035, 0x0036, 0x0037,
118 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef,
119 0x03d0, 0x03d1, 0x03d2, 0x03d3, 0x03d4, 0x03d5, 0x03d6, 0x03d7,
120 0x03d8, 0x03d9, 0x03da, 0x03db, 0x03dc, 0x03dd, 0x03de, 0x03df,
121 0x0fa0, 0x0fa1, 0x0fa2, 0x0fa3, 0x0fa4, 0x0fa5, 0x0fa6, 0x0fa7,
122 0x0fa8, 0x0fa9, 0x0faa, 0x0fab, 0x0fac, 0x0fad, 0x0fae, 0x0faf,
123 0x0fb0, 0x0fb1, 0x0fb2, 0x0fb3, 0x0fb4, 0x0fb5, 0x0fb6, 0x0fb7,
124 0x0fb8, 0x0fb9, 0x0fba, 0x0fbb, 0x0fbc, 0x0fbd, 0x0fbe, 0x0fbf,
125 0x3f40, 0x3f41, 0x3f42, 0x3f43, 0x3f44, 0x3f45, 0x3f46, 0x3f47,
126 0x3f48, 0x3f49, 0x3f4a, 0x3f4b, 0x3f4c, 0x3f4d, 0x3f4e, 0x3f4f,
127 0x3f50, 0x3f51, 0x3f52, 0x3f53, 0x3f54, 0x3f55, 0x3f56, 0x3f57,
128 0x3f58, 0x3f59, 0x3f5a, 0x3f5b, 0x3f5c, 0x3f5d, 0x3f5e, 0x3f5f,
129 0x3f60, 0x3f61, 0x3f62, 0x3f63, 0x3f64, 0x3f65, 0x3f66, 0x3f67,
130 0x3f68, 0x3f69, 0x3f6a, 0x3f6b, 0x3f6c, 0x3f6d, 0x3f6e, 0x3f6f,
131 0x3f70, 0x3f71, 0x3f72, 0x3f73, 0x3f74, 0x3f75, 0x3f76, 0x3f77,
132 0x3f78, 0x3f79, 0x3f7a, 0x3f7b, 0x3f7c, 0x3f7d, 0x3f7e, 0x3f7f,
135 static const uint8_t rv_chrom_bits[256] =
137 16, 14, 14, 14, 14, 14, 14, 14,
138 14, 14, 14, 14, 14, 14, 14, 14,
139 14, 14, 14, 14, 14, 14, 14, 14,
140 14, 14, 14, 14, 14, 14, 14, 14,
141 14, 14, 14, 14, 14, 14, 14, 14,
142 14, 14, 14, 14, 14, 14, 14, 14,
143 14, 14, 14, 14, 14, 14, 14, 14,
144 14, 14, 14, 14, 14, 14, 14, 14,
145 14, 12, 12, 12, 12, 12, 12, 12,
146 12, 12, 12, 12, 12, 12, 12, 12,
147 12, 12, 12, 12, 12, 12, 12, 12,
148 12, 12, 12, 12, 12, 12, 12, 12,
149 12, 10, 10, 10, 10, 10, 10, 10,
150 10, 10, 10, 10, 10, 10, 10, 10,
151 10, 8, 8, 8, 8, 8, 8, 8,
152 8, 6, 6, 6, 6, 4, 4, 3,
153 2, 3, 4, 4, 6, 6, 6, 6,
154 8, 8, 8, 8, 8, 8, 8, 8,
155 10, 10, 10, 10, 10, 10, 10, 10,
156 10, 10, 10, 10, 10, 10, 10, 10,
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, 12, 12, 12, 12, 12, 12, 12,
161 14, 14, 14, 14, 14, 14, 14, 14,
162 14, 14, 14, 14, 14, 14, 14, 14,
163 14, 14, 14, 14, 14, 14, 14, 14,
164 14, 14, 14, 14, 14, 14, 14, 14,
165 14, 14, 14, 14, 14, 14, 14, 14,
166 14, 14, 14, 14, 14, 14, 14, 14,
167 14, 14, 14, 14, 14, 14, 14, 14,
168 14, 14, 14, 14, 14, 14, 14, 14,
171 static VLC rv_dc_lum, rv_dc_chrom;
173 int rv_decode_dc(MpegEncContext *s, int n)
178 code = get_vlc2(&s->gb, rv_dc_lum.table, DC_VLC_BITS, 2);
180 /* XXX: I don't understand why they use LONGER codes than
181 necessary. The following code would be completely useless
182 if they had thought about it !!! */
183 code = get_bits(&s->gb, 7);
185 code = (int8_t)(get_bits(&s->gb, 7) + 1);
186 } else if (code == 0x7d) {
187 code = -128 + get_bits(&s->gb, 7);
188 } else if (code == 0x7e) {
189 if (get_bits(&s->gb, 1) == 0)
190 code = (int8_t)(get_bits(&s->gb, 8) + 1);
192 code = (int8_t)(get_bits(&s->gb, 8));
193 } else if (code == 0x7f) {
194 get_bits(&s->gb, 11);
201 code = get_vlc2(&s->gb, rv_dc_chrom.table, DC_VLC_BITS, 2);
204 code = get_bits(&s->gb, 9);
206 code = (int8_t)(get_bits(&s->gb, 7) + 1);
207 } else if (code == 0x1fd) {
208 code = -128 + get_bits(&s->gb, 7);
209 } else if (code == 0x1fe) {
213 fprintf(stderr, "chroma dc error\n");
223 #ifdef CONFIG_ENCODERS
225 /* write RV 1.0 compatible frame header */
226 void rv10_encode_picture_header(MpegEncContext *s, int picture_number)
230 align_put_bits(&s->pb);
232 put_bits(&s->pb, 1, 1); /* marker */
234 put_bits(&s->pb, 1, (s->pict_type == P_TYPE));
236 put_bits(&s->pb, 1, 0); /* not PB frame */
238 put_bits(&s->pb, 5, s->qscale);
240 if (s->pict_type == I_TYPE) {
241 /* specific MPEG like DC coding not used */
243 /* if multiple packets per frame are sent, the position at which
244 to display the macro blocks is coded here */
246 put_bits(&s->pb, 6, 0); /* mb_x */
247 put_bits(&s->pb, 6, 0); /* mb_y */
248 put_bits(&s->pb, 12, s->mb_width * s->mb_height);
251 put_bits(&s->pb, 3, 0); /* ignored */
254 static int get_num(GetBitContext *gb)
258 n = get_bits(gb, 16);
262 n1 = get_bits(gb, 16);
263 return (n << 16) | n1;
267 #endif //CONFIG_ENCODERS
269 /* read RV 1.0 compatible frame header */
270 static int rv10_decode_picture_header(MpegEncContext *s)
272 int mb_count, pb_frame, marker, full_frame, unk;
274 full_frame= s->avctx->slice_count==1;
275 //printf("ff:%d\n", full_frame);
276 marker = get_bits(&s->gb, 1);
278 if (get_bits(&s->gb, 1))
279 s->pict_type = P_TYPE;
281 s->pict_type = I_TYPE;
282 //printf("h:%X ver:%d\n",h,s->rv10_version);
283 if(!marker) printf("marker missing\n");
284 pb_frame = get_bits(&s->gb, 1);
287 printf("pict_type=%d pb_frame=%d\n", s->pict_type, pb_frame);
291 fprintf(stderr, "pb frame not supported\n");
295 s->qscale = get_bits(&s->gb, 5);
297 fprintf(stderr, "error, qscale:0\n");
301 if (s->pict_type == I_TYPE) {
302 if (s->rv10_version == 3) {
303 /* specific MPEG like DC coding not used */
304 s->last_dc[0] = get_bits(&s->gb, 8);
305 s->last_dc[1] = get_bits(&s->gb, 8);
306 s->last_dc[2] = get_bits(&s->gb, 8);
308 printf("DC:%d %d %d\n",
315 /* if multiple packets per frame are sent, the position at which
316 to display the macro blocks is coded here */
317 if ((!full_frame) || show_bits(&s->gb, 12)==0) {
318 s->mb_x = get_bits(&s->gb, 6); /* mb_x */
319 s->mb_y = get_bits(&s->gb, 6); /* mb_y */
320 mb_count = get_bits(&s->gb, 12);
324 mb_count = s->mb_width * s->mb_height;
326 unk= get_bits(&s->gb, 3); /* ignored */
327 //printf("%d\n", unk);
329 s->unrestricted_mv = 1;
334 static int rv10_decode_init(AVCodecContext *avctx)
336 MpegEncContext *s = avctx->priv_data;
340 s->out_format = FMT_H263;
342 s->width = avctx->width;
343 s->height = avctx->height;
346 switch(avctx->sub_id){
349 s->h263_long_vectors=0;
353 s->h263_long_vectors=1;
357 s->h263_long_vectors=0;
360 fprintf(stderr, "unknown header %X\n", avctx->sub_id);
362 //printf("ver:%X\n", avctx->sub_id);
363 s->flags= avctx->flags;
365 if (MPV_common_init(s) < 0)
368 h263_decode_init_vlc(s);
371 s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
372 s->progressive_sequence=1;
376 init_vlc(&rv_dc_lum, DC_VLC_BITS, 256,
379 init_vlc(&rv_dc_chrom, DC_VLC_BITS, 256,
381 rv_chrom_code, 2, 2);
388 static int rv10_decode_end(AVCodecContext *avctx)
390 MpegEncContext *s = avctx->priv_data;
396 static int rv10_decode_packet(AVCodecContext *avctx,
397 uint8_t *buf, int buf_size)
399 MpegEncContext *s = avctx->priv_data;
400 int i, mb_count, mb_pos, left;
402 init_get_bits(&s->gb, buf, buf_size*8);
404 mb_count = rv10_decode_picture_header(s);
406 fprintf(stderr, "HEADER ERROR\n");
410 if (s->mb_x >= s->mb_width ||
411 s->mb_y >= s->mb_height) {
412 fprintf(stderr, "POS ERROR %d %d\n", s->mb_x, s->mb_y);
415 mb_pos = s->mb_y * s->mb_width + s->mb_x;
416 left = s->mb_width * s->mb_height - mb_pos;
417 if (mb_count > left) {
418 fprintf(stderr, "COUNT ERROR\n");
422 if (s->mb_x == 0 && s->mb_y == 0) {
423 if(MPV_frame_start(s, avctx) < 0)
428 printf("qscale=%d\n", s->qscale);
431 /* default quantization values */
434 s->rv10_first_dc_coded[0] = 0;
435 s->rv10_first_dc_coded[1] = 0;
436 s->rv10_first_dc_coded[2] = 0;
438 if(s->mb_y==0) s->first_slice_line=1;
443 s->block_wrap[3]= s->mb_width*2 + 2;
445 s->block_wrap[5]= s->mb_width + 2;
446 ff_init_block_index(s);
447 /* decode each macroblock */
448 for(i=0;i<mb_count;i++) {
449 ff_update_block_index(s);
451 printf("**mb x=%d y=%d\n", s->mb_x, s->mb_y);
454 s->dsp.clear_blocks(s->block[0]);
455 s->mv_dir = MV_DIR_FORWARD;
456 s->mv_type = MV_TYPE_16X16;
457 if (ff_h263_decode_mb(s, s->block) == SLICE_ERROR) {
458 fprintf(stderr, "ERROR at MB %d %d\n", s->mb_x, s->mb_y);
461 MPV_decode_mb(s, s->block);
462 if (++s->mb_x == s->mb_width) {
465 ff_init_block_index(s);
466 s->first_slice_line=0;
473 static int rv10_decode_frame(AVCodecContext *avctx,
474 void *data, int *data_size,
475 uint8_t *buf, int buf_size)
477 MpegEncContext *s = avctx->priv_data;
479 AVFrame *pict = data;
482 printf("*****frame %d size=%d\n", avctx->frame_number, buf_size);
485 /* no supplementary picture */
491 if(avctx->slice_count){
492 for(i=0; i<avctx->slice_count; i++){
493 int offset= avctx->slice_offset[i];
496 if(i+1 == avctx->slice_count)
497 size= buf_size - offset;
499 size= avctx->slice_offset[i+1] - offset;
501 if( rv10_decode_packet(avctx, buf+offset, size) < 0 )
505 if( rv10_decode_packet(avctx, buf, buf_size) < 0 )
509 if(s->mb_y>=s->mb_height){
512 *pict= *(AVFrame*)&s->current_picture;
514 *data_size = sizeof(AVFrame);
522 AVCodec rv10_decoder = {
526 sizeof(MpegEncContext),