des-test: Pass the proper types to av_des_*() functions
[libav.git] / libavcodec / mpc8.c
CommitLineData
12877faf
KS
1/*
2 * Musepack SV8 decoder
3 * Copyright (c) 2007 Konstantin Shishkov
4 *
2912e87a 5 * This file is part of Libav.
12877faf 6 *
2912e87a 7 * Libav is free software; you can redistribute it and/or
12877faf
KS
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
12877faf
KS
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
2912e87a 18 * License along with Libav; if not, write to the Free Software
12877faf
KS
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22/**
ba87f080 23 * @file
12877faf
KS
24 * MPEG Audio Layer 1/2 -like codec with frames of 1152 samples
25 * divided into 32 subbands.
26 */
27
a903f8f0 28#include "libavutil/channel_layout.h"
74e2a078 29#include "libavutil/lfg.h"
12877faf 30#include "avcodec.h"
9106a698 31#include "get_bits.h"
594d4d5d 32#include "internal.h"
c4f5c2d6 33#include "mpegaudiodsp.h"
12877faf
KS
34
35#include "mpc.h"
12877faf
KS
36#include "mpc8data.h"
37#include "mpc8huff.h"
38
39static VLC band_vlc, scfi_vlc[2], dscf_vlc[2], res_vlc[2];
40static VLC q1_vlc, q2_vlc[2], q3_vlc[2], quant_vlc[4][2], q9up_vlc;
41
42static const int q3_offsets[2] = { MPC8_Q3_OFFSET, MPC8_Q4_OFFSET };
43static const int quant_offsets[6] = { MPC8_Q5_OFFSET, MPC8_Q6_OFFSET, MPC8_Q7_OFFSET, MPC8_Q8_OFFSET };
44
45static inline int mpc8_dec_base(GetBitContext *gb, int k, int n)
46{
0d5390b0
KS
47 int len = mpc8_cnk_len[k-1][n-1] - 1;
48 int code = len ? get_bits_long(gb, len) : 0;
12877faf
KS
49
50 if (code >= mpc8_cnk_lost[k-1][n-1])
51 code = ((code << 1) | get_bits1(gb)) - mpc8_cnk_lost[k-1][n-1];
52
53 return code;
54}
55
56static inline int mpc8_dec_enum(GetBitContext *gb, int k, int n)
57{
58 int bits = 0;
59 const uint32_t * C = mpc8_cnk[k-1];
60 int code = mpc8_dec_base(gb, k, n);
61
62 do {
63 n--;
64 if (code >= C[n]) {
65 bits |= 1 << n;
66 code -= C[n];
67 C -= 32;
68 k--;
69 }
70 } while(k > 0);
71
72 return bits;
73}
74
75static inline int mpc8_get_mod_golomb(GetBitContext *gb, int m)
76{
77 if(mpc8_cnk_len[0][m] < 1) return 0;
78 return mpc8_dec_base(gb, 1, m+1);
79}
80
81static int mpc8_get_mask(GetBitContext *gb, int size, int t)
82{
83 int mask = 0;
84
85 if(t && t != size)
86 mask = mpc8_dec_enum(gb, FFMIN(t, size - t), size);
87 if((t << 1) > size) mask = ~mask;
88
89 return mask;
90}
91
40039717 92static const uint16_t vlc_offsets[13] = {
bd4110f9
KS
93 0, 640, 1184, 1748, 2298, 2426, 2554, 3066, 3578, 4106, 4618, 5196, 5708
94};
95
98a6fff9 96static av_cold int mpc8_decode_init(AVCodecContext * avctx)
12877faf
KS
97{
98 int i;
99 MPCContext *c = avctx->priv_data;
100 GetBitContext gb;
5e534865 101 static int vlc_initialized = 0;
7d3829a8 102 int channels;
12877faf 103
bd4110f9
KS
104 static VLC_TYPE band_table[542][2];
105 static VLC_TYPE q1_table[520][2];
106 static VLC_TYPE q9up_table[524][2];
107 static VLC_TYPE scfi0_table[1 << MPC8_SCFI0_BITS][2];
108 static VLC_TYPE scfi1_table[1 << MPC8_SCFI1_BITS][2];
109 static VLC_TYPE dscf0_table[560][2];
110 static VLC_TYPE dscf1_table[598][2];
111 static VLC_TYPE q3_0_table[512][2];
112 static VLC_TYPE q3_1_table[516][2];
113 static VLC_TYPE codes_table[5708][2];
114
12877faf
KS
115 if(avctx->extradata_size < 2){
116 av_log(avctx, AV_LOG_ERROR, "Too small extradata size (%i)!\n", avctx->extradata_size);
117 return -1;
118 }
119 memset(c->oldDSCF, 0, sizeof(c->oldDSCF));
74e2a078 120 av_lfg_init(&c->rnd, 0xDEADBEEF);
c4f5c2d6 121 ff_mpadsp_init(&c->mpadsp);
12877faf
KS
122
123 ff_mpc_init();
124
125 init_get_bits(&gb, avctx->extradata, 16);
126
127 skip_bits(&gb, 3);//sample rate
128 c->maxbands = get_bits(&gb, 5) + 1;
7d3829a8
KS
129 channels = get_bits(&gb, 4) + 1;
130 if (channels > 2) {
12e25ed2 131 avpriv_request_sample(avctx, "Multichannel MPC SV8");
717addec 132 return AVERROR_PATCHWELCOME;
7d3829a8 133 }
12877faf
KS
134 c->MSS = get_bits1(&gb);
135 c->frames = 1 << (get_bits(&gb, 3) * 2);
136
1a345903 137 avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
c2fcd0a7 138 avctx->channel_layout = (avctx->channels==2) ? AV_CH_LAYOUT_STEREO : AV_CH_LAYOUT_MONO;
76c4a644 139
5e534865 140 if(vlc_initialized) return 0;
12877faf
KS
141 av_log(avctx, AV_LOG_DEBUG, "Initing VLC\n");
142
bd4110f9
KS
143 band_vlc.table = band_table;
144 band_vlc.table_allocated = 542;
12877faf
KS
145 init_vlc(&band_vlc, MPC8_BANDS_BITS, MPC8_BANDS_SIZE,
146 mpc8_bands_bits, 1, 1,
bd4110f9 147 mpc8_bands_codes, 1, 1, INIT_VLC_USE_NEW_STATIC);
12877faf 148
bd4110f9
KS
149 q1_vlc.table = q1_table;
150 q1_vlc.table_allocated = 520;
12877faf
KS
151 init_vlc(&q1_vlc, MPC8_Q1_BITS, MPC8_Q1_SIZE,
152 mpc8_q1_bits, 1, 1,
bd4110f9
KS
153 mpc8_q1_codes, 1, 1, INIT_VLC_USE_NEW_STATIC);
154 q9up_vlc.table = q9up_table;
155 q9up_vlc.table_allocated = 524;
12877faf
KS
156 init_vlc(&q9up_vlc, MPC8_Q9UP_BITS, MPC8_Q9UP_SIZE,
157 mpc8_q9up_bits, 1, 1,
bd4110f9 158 mpc8_q9up_codes, 1, 1, INIT_VLC_USE_NEW_STATIC);
12877faf 159
bd4110f9
KS
160 scfi_vlc[0].table = scfi0_table;
161 scfi_vlc[0].table_allocated = 1 << MPC8_SCFI0_BITS;
12877faf
KS
162 init_vlc(&scfi_vlc[0], MPC8_SCFI0_BITS, MPC8_SCFI0_SIZE,
163 mpc8_scfi0_bits, 1, 1,
bd4110f9
KS
164 mpc8_scfi0_codes, 1, 1, INIT_VLC_USE_NEW_STATIC);
165 scfi_vlc[1].table = scfi1_table;
166 scfi_vlc[1].table_allocated = 1 << MPC8_SCFI1_BITS;
12877faf
KS
167 init_vlc(&scfi_vlc[1], MPC8_SCFI1_BITS, MPC8_SCFI1_SIZE,
168 mpc8_scfi1_bits, 1, 1,
bd4110f9 169 mpc8_scfi1_codes, 1, 1, INIT_VLC_USE_NEW_STATIC);
12877faf 170
bd4110f9
KS
171 dscf_vlc[0].table = dscf0_table;
172 dscf_vlc[0].table_allocated = 560;
12877faf
KS
173 init_vlc(&dscf_vlc[0], MPC8_DSCF0_BITS, MPC8_DSCF0_SIZE,
174 mpc8_dscf0_bits, 1, 1,
bd4110f9
KS
175 mpc8_dscf0_codes, 1, 1, INIT_VLC_USE_NEW_STATIC);
176 dscf_vlc[1].table = dscf1_table;
177 dscf_vlc[1].table_allocated = 598;
12877faf
KS
178 init_vlc(&dscf_vlc[1], MPC8_DSCF1_BITS, MPC8_DSCF1_SIZE,
179 mpc8_dscf1_bits, 1, 1,
bd4110f9 180 mpc8_dscf1_codes, 1, 1, INIT_VLC_USE_NEW_STATIC);
12877faf 181
bd4110f9
KS
182 q3_vlc[0].table = q3_0_table;
183 q3_vlc[0].table_allocated = 512;
e96b4a53 184 ff_init_vlc_sparse(&q3_vlc[0], MPC8_Q3_BITS, MPC8_Q3_SIZE,
12877faf
KS
185 mpc8_q3_bits, 1, 1,
186 mpc8_q3_codes, 1, 1,
bd4110f9
KS
187 mpc8_q3_syms, 1, 1, INIT_VLC_USE_NEW_STATIC);
188 q3_vlc[1].table = q3_1_table;
189 q3_vlc[1].table_allocated = 516;
e96b4a53 190 ff_init_vlc_sparse(&q3_vlc[1], MPC8_Q4_BITS, MPC8_Q4_SIZE,
12877faf
KS
191 mpc8_q4_bits, 1, 1,
192 mpc8_q4_codes, 1, 1,
bd4110f9 193 mpc8_q4_syms, 1, 1, INIT_VLC_USE_NEW_STATIC);
12877faf
KS
194
195 for(i = 0; i < 2; i++){
bd4110f9
KS
196 res_vlc[i].table = &codes_table[vlc_offsets[0+i]];
197 res_vlc[i].table_allocated = vlc_offsets[1+i] - vlc_offsets[0+i];
12877faf
KS
198 init_vlc(&res_vlc[i], MPC8_RES_BITS, MPC8_RES_SIZE,
199 &mpc8_res_bits[i], 1, 1,
bd4110f9 200 &mpc8_res_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
12877faf 201
bd4110f9
KS
202 q2_vlc[i].table = &codes_table[vlc_offsets[2+i]];
203 q2_vlc[i].table_allocated = vlc_offsets[3+i] - vlc_offsets[2+i];
12877faf
KS
204 init_vlc(&q2_vlc[i], MPC8_Q2_BITS, MPC8_Q2_SIZE,
205 &mpc8_q2_bits[i], 1, 1,
bd4110f9 206 &mpc8_q2_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
12877faf 207
bd4110f9
KS
208 quant_vlc[0][i].table = &codes_table[vlc_offsets[4+i]];
209 quant_vlc[0][i].table_allocated = vlc_offsets[5+i] - vlc_offsets[4+i];
12877faf
KS
210 init_vlc(&quant_vlc[0][i], MPC8_Q5_BITS, MPC8_Q5_SIZE,
211 &mpc8_q5_bits[i], 1, 1,
bd4110f9
KS
212 &mpc8_q5_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
213 quant_vlc[1][i].table = &codes_table[vlc_offsets[6+i]];
214 quant_vlc[1][i].table_allocated = vlc_offsets[7+i] - vlc_offsets[6+i];
12877faf
KS
215 init_vlc(&quant_vlc[1][i], MPC8_Q6_BITS, MPC8_Q6_SIZE,
216 &mpc8_q6_bits[i], 1, 1,
bd4110f9
KS
217 &mpc8_q6_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
218 quant_vlc[2][i].table = &codes_table[vlc_offsets[8+i]];
219 quant_vlc[2][i].table_allocated = vlc_offsets[9+i] - vlc_offsets[8+i];
12877faf
KS
220 init_vlc(&quant_vlc[2][i], MPC8_Q7_BITS, MPC8_Q7_SIZE,
221 &mpc8_q7_bits[i], 1, 1,
bd4110f9
KS
222 &mpc8_q7_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
223 quant_vlc[3][i].table = &codes_table[vlc_offsets[10+i]];
224 quant_vlc[3][i].table_allocated = vlc_offsets[11+i] - vlc_offsets[10+i];
12877faf
KS
225 init_vlc(&quant_vlc[3][i], MPC8_Q8_BITS, MPC8_Q8_SIZE,
226 &mpc8_q8_bits[i], 1, 1,
bd4110f9 227 &mpc8_q8_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
12877faf 228 }
5e534865 229 vlc_initialized = 1;
0eea2129 230
12877faf
KS
231 return 0;
232}
233
0eea2129
JR
234static int mpc8_decode_frame(AVCodecContext * avctx, void *data,
235 int *got_frame_ptr, AVPacket *avpkt)
12877faf 236{
3a23752c 237 AVFrame *frame = data;
7a00bbad
TB
238 const uint8_t *buf = avpkt->data;
239 int buf_size = avpkt->size;
12877faf
KS
240 MPCContext *c = avctx->priv_data;
241 GetBitContext gb2, *gb = &gb2;
242 int i, j, k, ch, cnt, res, t;
243 Band *bands = c->bands;
0eea2129 244 int off;
12877faf
KS
245 int maxband, keyframe;
246 int last[2];
247
0eea2129 248 /* get output buffer */
3a23752c 249 frame->nb_samples = MPC_FRAME_SIZE;
759001c5 250 if ((res = ff_get_buffer(avctx, frame, 0)) < 0) {
0eea2129
JR
251 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
252 return res;
5674d4b0
JR
253 }
254
12877faf
KS
255 keyframe = c->cur_frame == 0;
256
257 if(keyframe){
258 memset(c->Q, 0, sizeof(c->Q));
259 c->last_bits_used = 0;
260 }
261 init_get_bits(gb, buf, buf_size * 8);
262 skip_bits(gb, c->last_bits_used & 7);
263
264 if(keyframe)
265 maxband = mpc8_get_mod_golomb(gb, c->maxbands + 1);
266 else{
267 maxband = c->last_max_band + get_vlc2(gb, band_vlc.table, MPC8_BANDS_BITS, 2);
268 if(maxband > 32) maxband -= 33;
269 }
b56825c4 270 if(maxband > c->maxbands + 1)
9bd854b1 271 return AVERROR_INVALIDDATA;
12877faf
KS
272 c->last_max_band = maxband;
273
274 /* read subband indexes */
275 if(maxband){
276 last[0] = last[1] = 0;
277 for(i = maxband - 1; i >= 0; i--){
278 for(ch = 0; ch < 2; ch++){
279 last[ch] = get_vlc2(gb, res_vlc[last[ch] > 2].table, MPC8_RES_BITS, 2) + last[ch];
280 if(last[ch] > 15) last[ch] -= 17;
281 bands[i].res[ch] = last[ch];
282 }
283 }
284 if(c->MSS){
285 int mask;
286
287 cnt = 0;
288 for(i = 0; i < maxband; i++)
289 if(bands[i].res[0] || bands[i].res[1])
290 cnt++;
291 t = mpc8_get_mod_golomb(gb, cnt);
292 mask = mpc8_get_mask(gb, cnt, t);
293 for(i = maxband - 1; i >= 0; i--)
294 if(bands[i].res[0] || bands[i].res[1]){
295 bands[i].msf = mask & 1;
296 mask >>= 1;
297 }
298 }
299 }
300 for(i = maxband; i < c->maxbands; i++)
301 bands[i].res[0] = bands[i].res[1] = 0;
302
303 if(keyframe){
304 for(i = 0; i < 32; i++)
305 c->oldDSCF[0][i] = c->oldDSCF[1][i] = 1;
306 }
307
308 for(i = 0; i < maxband; i++){
309 if(bands[i].res[0] || bands[i].res[1]){
310 cnt = !!bands[i].res[0] + !!bands[i].res[1] - 1;
311 if(cnt >= 0){
312 t = get_vlc2(gb, scfi_vlc[cnt].table, scfi_vlc[cnt].bits, 1);
313 if(bands[i].res[0]) bands[i].scfi[0] = t >> (2 * cnt);
314 if(bands[i].res[1]) bands[i].scfi[1] = t & 3;
315 }
316 }
317 }
318
319 for(i = 0; i < maxband; i++){
320 for(ch = 0; ch < 2; ch++){
321 if(!bands[i].res[ch]) continue;
322
323 if(c->oldDSCF[ch][i]){
324 bands[i].scf_idx[ch][0] = get_bits(gb, 7) - 6;
325 c->oldDSCF[ch][i] = 0;
326 }else{
327 t = get_vlc2(gb, dscf_vlc[1].table, MPC8_DSCF1_BITS, 2);
328 if(t == 64)
329 t += get_bits(gb, 6);
330 bands[i].scf_idx[ch][0] = ((bands[i].scf_idx[ch][2] + t - 25) & 0x7F) - 6;
331 }
332 for(j = 0; j < 2; j++){
333 if((bands[i].scfi[ch] << j) & 2)
334 bands[i].scf_idx[ch][j + 1] = bands[i].scf_idx[ch][j];
335 else{
336 t = get_vlc2(gb, dscf_vlc[0].table, MPC8_DSCF0_BITS, 2);
337 if(t == 31)
338 t = 64 + get_bits(gb, 6);
339 bands[i].scf_idx[ch][j + 1] = ((bands[i].scf_idx[ch][j] + t - 25) & 0x7F) - 6;
340 }
341 }
342 }
343 }
344
345 for(i = 0, off = 0; i < maxband; i++, off += SAMPLES_PER_BAND){
346 for(ch = 0; ch < 2; ch++){
347 res = bands[i].res[ch];
348 switch(res){
349 case -1:
350 for(j = 0; j < SAMPLES_PER_BAND; j++)
74e2a078 351 c->Q[ch][off + j] = (av_lfg_get(&c->rnd) & 0x3FC) - 510;
12877faf
KS
352 break;
353 case 0:
354 break;
355 case 1:
356 for(j = 0; j < SAMPLES_PER_BAND; j += SAMPLES_PER_BAND / 2){
357 cnt = get_vlc2(gb, q1_vlc.table, MPC8_Q1_BITS, 2);
358 t = mpc8_get_mask(gb, 18, cnt);
359 for(k = 0; k < SAMPLES_PER_BAND / 2; k++, t <<= 1)
360 c->Q[ch][off + j + k] = (t & 0x20000) ? (get_bits1(gb) << 1) - 1 : 0;
361 }
362 break;
363 case 2:
364 cnt = 6;//2*mpc8_thres[res]
365 for(j = 0; j < SAMPLES_PER_BAND; j += 3){
366 t = get_vlc2(gb, q2_vlc[cnt > 3].table, MPC8_Q2_BITS, 2);
367 c->Q[ch][off + j + 0] = mpc8_idx50[t];
368 c->Q[ch][off + j + 1] = mpc8_idx51[t];
369 c->Q[ch][off + j + 2] = mpc8_idx52[t];
370 cnt = (cnt >> 1) + mpc8_huffq2[t];
371 }
372 break;
373 case 3:
374 case 4:
375 for(j = 0; j < SAMPLES_PER_BAND; j += 2){
376 t = get_vlc2(gb, q3_vlc[res - 3].table, MPC8_Q3_BITS, 2) + q3_offsets[res - 3];
377 c->Q[ch][off + j + 1] = t >> 4;
378 c->Q[ch][off + j + 0] = (t & 8) ? (t & 0xF) - 16 : (t & 0xF);
379 }
380 break;
381 case 5:
382 case 6:
383 case 7:
384 case 8:
385 cnt = 2 * mpc8_thres[res];
386 for(j = 0; j < SAMPLES_PER_BAND; j++){
387 t = get_vlc2(gb, quant_vlc[res - 5][cnt > mpc8_thres[res]].table, quant_vlc[res - 5][cnt > mpc8_thres[res]].bits, 2) + quant_offsets[res - 5];
388 c->Q[ch][off + j] = t;
389 cnt = (cnt >> 1) + FFABS(c->Q[ch][off + j]);
390 }
391 break;
392 default:
393 for(j = 0; j < SAMPLES_PER_BAND; j++){
394 c->Q[ch][off + j] = get_vlc2(gb, q9up_vlc.table, MPC8_Q9UP_BITS, 2);
395 if(res != 9){
396 c->Q[ch][off + j] <<= res - 9;
397 c->Q[ch][off + j] |= get_bits(gb, res - 9);
398 }
399 c->Q[ch][off + j] -= (1 << (res - 2)) - 1;
400 }
401 }
402 }
403 }
404
1a345903 405 ff_mpc_dequantize_and_synth(c, maxband - 1,
3a23752c 406 (int16_t **)frame->extended_data,
b56825c4 407 avctx->channels);
12877faf
KS
408
409 c->cur_frame++;
410
411 c->last_bits_used = get_bits_count(gb);
8f2aa89a
KS
412 if(get_bits_left(gb) < 8) // we have only padding left
413 c->last_bits_used = buf_size << 3;
12877faf
KS
414 if(c->cur_frame >= c->frames)
415 c->cur_frame = 0;
0eea2129 416
3a23752c 417 *got_frame_ptr = 1;
12877faf
KS
418
419 return c->cur_frame ? c->last_bits_used >> 3 : buf_size;
420}
421
fdbeae44
JR
422static av_cold void mpc8_decode_flush(AVCodecContext *avctx)
423{
424 MPCContext *c = avctx->priv_data;
425 c->cur_frame = 0;
426}
427
d36beb3f 428AVCodec ff_mpc8_decoder = {
ec6402b7 429 .name = "mpc8",
b2bed932 430 .long_name = NULL_IF_CONFIG_SMALL("Musepack SV8"),
ec6402b7 431 .type = AVMEDIA_TYPE_AUDIO,
36ef5369 432 .id = AV_CODEC_ID_MUSEPACK8,
ec6402b7
AK
433 .priv_data_size = sizeof(MPCContext),
434 .init = mpc8_decode_init,
435 .decode = mpc8_decode_frame,
fdbeae44 436 .flush = mpc8_decode_flush,
def97856 437 .capabilities = AV_CODEC_CAP_DR1,
1a345903
JR
438 .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
439 AV_SAMPLE_FMT_NONE },
12877faf 440};