diff options
Diffstat (limited to 'apps/gui/pitchscreen.c')
-rw-r--r-- | apps/gui/pitchscreen.c | 681 |
1 files changed, 552 insertions, 129 deletions
diff --git a/apps/gui/pitchscreen.c b/apps/gui/pitchscreen.c index 16fac0c3b5..a699d4a7b4 100644 --- a/apps/gui/pitchscreen.c +++ b/apps/gui/pitchscreen.c | |||
@@ -22,6 +22,7 @@ | |||
22 | #include <stdbool.h> | 22 | #include <stdbool.h> |
23 | #include <string.h> | 23 | #include <string.h> |
24 | #include <stdio.h> | 24 | #include <stdio.h> |
25 | #include <math.h> | ||
25 | #include "config.h" | 26 | #include "config.h" |
26 | #include "sprintf.h" | 27 | #include "sprintf.h" |
27 | #include "action.h" | 28 | #include "action.h" |
@@ -36,24 +37,27 @@ | |||
36 | #include "system.h" | 37 | #include "system.h" |
37 | #include "misc.h" | 38 | #include "misc.h" |
38 | #include "pitchscreen.h" | 39 | #include "pitchscreen.h" |
40 | #include "settings.h" | ||
39 | #if CONFIG_CODEC == SWCODEC | 41 | #if CONFIG_CODEC == SWCODEC |
40 | #include "tdspeed.h" | 42 | #include "tdspeed.h" |
41 | #endif | 43 | #endif |
42 | 44 | ||
45 | #define ABS(x) ((x) > 0 ? (x) : -(x)) | ||
43 | 46 | ||
44 | #define ICON_BORDER 12 /* icons are currently 7x8, so add ~2 pixels */ | 47 | #define ICON_BORDER 12 /* icons are currently 7x8, so add ~2 pixels */ |
45 | /* on both sides when drawing */ | 48 | /* on both sides when drawing */ |
46 | 49 | ||
47 | #define PITCH_MAX 2000 | 50 | #define PITCH_MAX (200 * PITCH_SPEED_PRECISION) |
48 | #define PITCH_MIN 500 | 51 | #define PITCH_MIN (50 * PITCH_SPEED_PRECISION) |
49 | #define PITCH_SMALL_DELTA 1 | 52 | #define PITCH_SMALL_DELTA (PITCH_SPEED_PRECISION / 10) /* .1% */ |
50 | #define PITCH_BIG_DELTA 10 | 53 | #define PITCH_BIG_DELTA (PITCH_SPEED_PRECISION) /* 1% */ |
51 | #define PITCH_NUDGE_DELTA 20 | 54 | #define PITCH_NUDGE_DELTA (2 * PITCH_SPEED_PRECISION) /* 2% */ |
52 | 55 | ||
53 | static bool pitch_mode_semitone = false; | 56 | #define SPEED_SMALL_DELTA (PITCH_SPEED_PRECISION / 10) /* .1% */ |
54 | #if CONFIG_CODEC == SWCODEC | 57 | #define SPEED_BIG_DELTA (PITCH_SPEED_PRECISION) /* 1% */ |
55 | static bool pitch_mode_timestretch = false; | 58 | |
56 | #endif | 59 | #define SEMITONE_SMALL_DELTA (PITCH_SPEED_PRECISION / 10) /* 10 cents */ |
60 | #define SEMITONE_BIG_DELTA PITCH_SPEED_PRECISION /* 1 semitone */ | ||
57 | 61 | ||
58 | enum | 62 | enum |
59 | { | 63 | { |
@@ -63,25 +67,111 @@ enum | |||
63 | PITCH_ITEM_COUNT, | 67 | PITCH_ITEM_COUNT, |
64 | }; | 68 | }; |
65 | 69 | ||
70 | |||
71 | /* This is a table of semitone percentage values of the appropriate | ||
72 | precision (based on PITCH_SPEED_PRECISION). Note that these are | ||
73 | all constant expressions, which will be evaluated at compile time, | ||
74 | so no need to worry about how complex the expressions look. | ||
75 | That's just to get the precision right. | ||
76 | |||
77 | I calculated these values, starting from 50, as | ||
78 | |||
79 | x(n) = 50 * 2^(n/12) | ||
80 | |||
81 | All that math in each entry simply converts the float constant | ||
82 | to an integer equal to PITCH_SPEED_PRECISION times the float value, | ||
83 | with as little precision loss as possible. | ||
84 | */ | ||
85 | #define SEMITONE_VALUE(x) \ | ||
86 | ( (int)(((x) + 0.5 / PITCH_SPEED_PRECISION) * PITCH_SPEED_PRECISION) ) | ||
87 | |||
88 | static const int semitone_table[] = | ||
89 | { | ||
90 | SEMITONE_VALUE(50), | ||
91 | SEMITONE_VALUE(52.97315472), | ||
92 | SEMITONE_VALUE(56.12310242), | ||
93 | SEMITONE_VALUE(59.46035575), | ||
94 | SEMITONE_VALUE(62.99605249), | ||
95 | SEMITONE_VALUE(66.74199271), | ||
96 | SEMITONE_VALUE(70.71067812), | ||
97 | SEMITONE_VALUE(74.91535384), | ||
98 | SEMITONE_VALUE(79.3700526 ), | ||
99 | SEMITONE_VALUE(84.08964153), | ||
100 | SEMITONE_VALUE(89.08987181), | ||
101 | SEMITONE_VALUE(94.38743127), | ||
102 | SEMITONE_VALUE(100 ), | ||
103 | SEMITONE_VALUE(105.9463094), | ||
104 | SEMITONE_VALUE(112.2462048), | ||
105 | SEMITONE_VALUE(118.9207115), | ||
106 | SEMITONE_VALUE(125.992105 ), | ||
107 | SEMITONE_VALUE(133.4839854), | ||
108 | SEMITONE_VALUE(141.4213562), | ||
109 | SEMITONE_VALUE(149.8307077), | ||
110 | SEMITONE_VALUE(158.7401052), | ||
111 | SEMITONE_VALUE(168.1792831), | ||
112 | SEMITONE_VALUE(178.1797436), | ||
113 | SEMITONE_VALUE(188.7748625), | ||
114 | SEMITONE_VALUE(200 ) | ||
115 | }; | ||
116 | |||
117 | #define NUM_SEMITONES ((int)(sizeof(semitone_table) / sizeof(int))) | ||
118 | #define SEMITONE_START -12 | ||
119 | #define SEMITONE_END 12 | ||
120 | |||
121 | /* A table of values for approximating the cent curve with | ||
122 | linear interpolation. Multipy the next lowest semitone | ||
123 | by this much to find the corresponding cent percentage. | ||
124 | |||
125 | These values were calculated as | ||
126 | x(n) = 100 * 2^(n * 20/1200) | ||
127 | */ | ||
128 | |||
129 | #define CENT_INTERP(x) \ | ||
130 | ( (int)(((x) + 0.5 / PITCH_SPEED_PRECISION) * PITCH_SPEED_PRECISION) ) | ||
131 | |||
132 | |||
133 | static const int cent_interp[] = | ||
134 | { | ||
135 | PITCH_SPEED_100, | ||
136 | CENT_INTERP(101.1619440), | ||
137 | CENT_INTERP(102.3373892), | ||
138 | CENT_INTERP(103.5264924), | ||
139 | CENT_INTERP(104.7294123), | ||
140 | /* this one's the next semitone but we have it here for convenience */ | ||
141 | CENT_INTERP(105.9463094), | ||
142 | }; | ||
143 | |||
144 | /* Number of cents between entries in the cent_interp table */ | ||
145 | #define CENT_INTERP_INTERVAL 20 | ||
146 | #define CENT_INTERP_NUM ((int)(sizeof(cent_interp)/sizeof(int))) | ||
147 | |||
148 | /* This stores whether the pitch and speed are at their own limits */ | ||
149 | /* or that of the timestretching algorithm */ | ||
150 | static bool at_limit = false; | ||
151 | |||
66 | static void pitchscreen_fix_viewports(struct viewport *parent, | 152 | static void pitchscreen_fix_viewports(struct viewport *parent, |
67 | struct viewport pitch_viewports[PITCH_ITEM_COUNT]) | 153 | struct viewport pitch_viewports[PITCH_ITEM_COUNT]) |
68 | { | 154 | { |
69 | int i, height; | 155 | int i, font_height; |
70 | height = font_get(parent->font)->height; | 156 | font_height = font_get(parent->font)->height; |
71 | for (i = 0; i < PITCH_ITEM_COUNT; i++) | 157 | for (i = 0; i < PITCH_ITEM_COUNT; i++) |
72 | { | 158 | { |
73 | pitch_viewports[i] = *parent; | 159 | pitch_viewports[i] = *parent; |
74 | pitch_viewports[i].height = height; | 160 | pitch_viewports[i].height = font_height; |
75 | } | 161 | } |
76 | pitch_viewports[PITCH_TOP].y += ICON_BORDER; | 162 | pitch_viewports[PITCH_TOP].y += ICON_BORDER; |
77 | 163 | ||
78 | pitch_viewports[PITCH_MID].x += ICON_BORDER; | 164 | pitch_viewports[PITCH_MID].x += ICON_BORDER; |
79 | pitch_viewports[PITCH_MID].width = parent->width - ICON_BORDER*2; | 165 | pitch_viewports[PITCH_MID].width = parent->width - ICON_BORDER*2; |
80 | pitch_viewports[PITCH_MID].height = height * 2; | 166 | pitch_viewports[PITCH_MID].height = parent->height - ICON_BORDER*2 |
167 | - font_height * 2; | ||
168 | if(pitch_viewports[PITCH_MID].height < font_height * 2) | ||
169 | pitch_viewports[PITCH_MID].height = font_height * 2; | ||
81 | pitch_viewports[PITCH_MID].y += parent->height / 2 - | 170 | pitch_viewports[PITCH_MID].y += parent->height / 2 - |
82 | pitch_viewports[PITCH_MID].height / 2; | 171 | pitch_viewports[PITCH_MID].height / 2; |
83 | 172 | ||
84 | pitch_viewports[PITCH_BOTTOM].y += parent->height - height - ICON_BORDER; | 173 | pitch_viewports[PITCH_BOTTOM].y += parent->height - font_height |
174 | - ICON_BORDER; | ||
85 | } | 175 | } |
86 | 176 | ||
87 | /* must be called before pitchscreen_draw, or within | 177 | /* must be called before pitchscreen_draw, or within |
@@ -107,9 +197,9 @@ static void pitchscreen_draw_icons(struct screen *display, | |||
107 | 197 | ||
108 | static void pitchscreen_draw(struct screen *display, int max_lines, | 198 | static void pitchscreen_draw(struct screen *display, int max_lines, |
109 | struct viewport pitch_viewports[PITCH_ITEM_COUNT], | 199 | struct viewport pitch_viewports[PITCH_ITEM_COUNT], |
110 | int pitch | 200 | int32_t pitch, int32_t semitone |
111 | #if CONFIG_CODEC == SWCODEC | 201 | #if CONFIG_CODEC == SWCODEC |
112 | ,int speed | 202 | ,int32_t speed |
113 | #endif | 203 | #endif |
114 | ) | 204 | ) |
115 | { | 205 | { |
@@ -123,7 +213,7 @@ static void pitchscreen_draw(struct screen *display, int max_lines, | |||
123 | { | 213 | { |
124 | /* UP: Pitch Up */ | 214 | /* UP: Pitch Up */ |
125 | display->set_viewport(&pitch_viewports[PITCH_TOP]); | 215 | display->set_viewport(&pitch_viewports[PITCH_TOP]); |
126 | if (pitch_mode_semitone) | 216 | if (global_settings.pitch_mode_semitone) |
127 | ptr = str(LANG_PITCH_UP_SEMITONE); | 217 | ptr = str(LANG_PITCH_UP_SEMITONE); |
128 | else | 218 | else |
129 | ptr = str(LANG_PITCH_UP); | 219 | ptr = str(LANG_PITCH_UP); |
@@ -136,7 +226,7 @@ static void pitchscreen_draw(struct screen *display, int max_lines, | |||
136 | 226 | ||
137 | /* DOWN: Pitch Down */ | 227 | /* DOWN: Pitch Down */ |
138 | display->set_viewport(&pitch_viewports[PITCH_BOTTOM]); | 228 | display->set_viewport(&pitch_viewports[PITCH_BOTTOM]); |
139 | if (pitch_mode_semitone) | 229 | if (global_settings.pitch_mode_semitone) |
140 | ptr = str(LANG_PITCH_DOWN_SEMITONE); | 230 | ptr = str(LANG_PITCH_DOWN_SEMITONE); |
141 | else | 231 | else |
142 | ptr = str(LANG_PITCH_DOWN); | 232 | ptr = str(LANG_PITCH_DOWN); |
@@ -157,55 +247,95 @@ static void pitchscreen_draw(struct screen *display, int max_lines, | |||
157 | if ((show_lang_pitch = (max_lines >= 3))) | 247 | if ((show_lang_pitch = (max_lines >= 3))) |
158 | { | 248 | { |
159 | #if CONFIG_CODEC == SWCODEC | 249 | #if CONFIG_CODEC == SWCODEC |
160 | if (!pitch_mode_timestretch) | 250 | if(global_settings.pitch_mode_timestretch) |
161 | { | 251 | { |
162 | #endif | 252 | /* Pitch:XXX.X% */ |
163 | /* LANG_PITCH */ | 253 | if(global_settings.pitch_mode_semitone) |
164 | snprintf(buf, sizeof(buf), "%s", str(LANG_PITCH)); | 254 | { |
165 | #if CONFIG_CODEC == SWCODEC | 255 | snprintf(buf, sizeof(buf), "%s: %s%ld.%02ld", str(LANG_PITCH), |
256 | semitone >= 0 ? "+" : "-", | ||
257 | ABS(semitone / PITCH_SPEED_PRECISION), | ||
258 | ABS((semitone % PITCH_SPEED_PRECISION) / | ||
259 | (PITCH_SPEED_PRECISION / 100)) | ||
260 | ); | ||
261 | } | ||
262 | else | ||
263 | { | ||
264 | snprintf(buf, sizeof(buf), "%s: %ld.%ld%%", str(LANG_PITCH), | ||
265 | pitch / PITCH_SPEED_PRECISION, | ||
266 | (pitch % PITCH_SPEED_PRECISION) / | ||
267 | (PITCH_SPEED_PRECISION / 10)); | ||
268 | } | ||
166 | } | 269 | } |
167 | else | 270 | else |
271 | #endif | ||
168 | { | 272 | { |
169 | /* Pitch:XXX.X% */ | 273 | /* Rate */ |
170 | snprintf(buf, sizeof(buf), "%s:%d.%d%%", str(LANG_PITCH), | 274 | snprintf(buf, sizeof(buf), "%s:", str(LANG_PLAYBACK_RATE)); |
171 | pitch / 10, pitch % 10); | ||
172 | } | 275 | } |
173 | #endif | ||
174 | display->getstringsize(buf, &w, &h); | 276 | display->getstringsize(buf, &w, &h); |
175 | display->putsxy((pitch_viewports[PITCH_MID].width / 2) - (w / 2), | 277 | display->putsxy((pitch_viewports[PITCH_MID].width / 2) - (w / 2), |
176 | 0, buf); | 278 | (pitch_viewports[PITCH_MID].height / 2) - h, buf); |
177 | if (w > width_used) | 279 | if (w > width_used) |
178 | width_used = w; | 280 | width_used = w; |
179 | } | 281 | } |
180 | 282 | ||
181 | /* Middle section lower line */ | 283 | /* Middle section lower line */ |
284 | /* "Speed:XXX%" */ | ||
182 | #if CONFIG_CODEC == SWCODEC | 285 | #if CONFIG_CODEC == SWCODEC |
183 | if (!pitch_mode_timestretch) | 286 | if(global_settings.pitch_mode_timestretch) |
184 | { | 287 | { |
185 | #endif | 288 | snprintf(buf, sizeof(buf), "%s: %ld.%ld%%", str(LANG_SPEED), |
186 | /* "XXX.X%" */ | 289 | speed / PITCH_SPEED_PRECISION, |
187 | snprintf(buf, sizeof(buf), "%d.%d%%", | 290 | (speed % PITCH_SPEED_PRECISION) / (PITCH_SPEED_PRECISION / 10)); |
188 | pitch / 10, pitch % 10); | ||
189 | #if CONFIG_CODEC == SWCODEC | ||
190 | } | 291 | } |
191 | else | 292 | else |
293 | #endif | ||
192 | { | 294 | { |
193 | /* "Speed:XXX%" */ | 295 | if(global_settings.pitch_mode_semitone) |
194 | snprintf(buf, sizeof(buf), "%s:%d%%", str(LANG_SPEED), | 296 | { |
195 | speed / 1000); | 297 | snprintf(buf, sizeof(buf), "%s%ld.%02ld", |
298 | semitone >= 0 ? "+" : "-", | ||
299 | ABS(semitone / PITCH_SPEED_PRECISION), | ||
300 | ABS((semitone % PITCH_SPEED_PRECISION) / | ||
301 | (PITCH_SPEED_PRECISION / 100)) | ||
302 | ); | ||
303 | } | ||
304 | else | ||
305 | { | ||
306 | snprintf(buf, sizeof(buf), "%ld.%ld%%", | ||
307 | pitch / PITCH_SPEED_PRECISION, | ||
308 | (pitch % PITCH_SPEED_PRECISION) / (PITCH_SPEED_PRECISION / 10)); | ||
309 | } | ||
196 | } | 310 | } |
197 | #endif | 311 | |
198 | display->getstringsize(buf, &w, &h); | 312 | display->getstringsize(buf, &w, &h); |
199 | display->putsxy((pitch_viewports[PITCH_MID].width / 2) - (w / 2), | 313 | display->putsxy((pitch_viewports[PITCH_MID].width / 2) - (w / 2), |
200 | (show_lang_pitch ? h : h/2), buf); | 314 | show_lang_pitch ? (pitch_viewports[PITCH_MID].height / 2) : |
315 | (pitch_viewports[PITCH_MID].height / 2) - (h / 2), | ||
316 | buf); | ||
201 | if (w > width_used) | 317 | if (w > width_used) |
202 | width_used = w; | 318 | width_used = w; |
203 | 319 | ||
320 | /* "limit" and "timestretch" labels */ | ||
321 | if (max_lines >= 7) | ||
322 | { | ||
323 | if(at_limit) | ||
324 | { | ||
325 | snprintf(buf, sizeof(buf), "%s", str(LANG_STRETCH_LIMIT)); | ||
326 | display->getstringsize(buf, &w, &h); | ||
327 | display->putsxy((pitch_viewports[PITCH_MID].width / 2) - (w / 2), | ||
328 | (pitch_viewports[PITCH_MID].height / 2) + h, buf); | ||
329 | if (w > width_used) | ||
330 | width_used = w; | ||
331 | } | ||
332 | } | ||
333 | |||
204 | /* Middle section left/right labels */ | 334 | /* Middle section left/right labels */ |
205 | const char *leftlabel = "-2%"; | 335 | const char *leftlabel = "-2%"; |
206 | const char *rightlabel = "+2%"; | 336 | const char *rightlabel = "+2%"; |
207 | #if CONFIG_CODEC == SWCODEC | 337 | #if CONFIG_CODEC == SWCODEC |
208 | if (pitch_mode_timestretch) | 338 | if (global_settings.pitch_mode_timestretch) |
209 | { | 339 | { |
210 | leftlabel = "<<"; | 340 | leftlabel = "<<"; |
211 | rightlabel = ">>"; | 341 | rightlabel = ">>"; |
@@ -220,37 +350,67 @@ static void pitchscreen_draw(struct screen *display, int max_lines, | |||
220 | 350 | ||
221 | if (width_used <= pitch_viewports[PITCH_MID].width) | 351 | if (width_used <= pitch_viewports[PITCH_MID].width) |
222 | { | 352 | { |
223 | display->putsxy(0, h / 2, leftlabel); | 353 | display->putsxy(0, (pitch_viewports[PITCH_MID].height / 2) - (h / 2), |
224 | display->putsxy(pitch_viewports[PITCH_MID].width - w, h /2, rightlabel); | 354 | leftlabel); |
355 | display->putsxy((pitch_viewports[PITCH_MID].width - w), | ||
356 | (pitch_viewports[PITCH_MID].height / 2) - (h / 2), | ||
357 | rightlabel); | ||
225 | } | 358 | } |
226 | display->update_viewport(); | 359 | display->update_viewport(); |
227 | display->set_viewport(NULL); | 360 | display->set_viewport(NULL); |
228 | } | 361 | } |
229 | 362 | ||
230 | static int pitch_increase(int pitch, int pitch_delta, bool allow_cutoff) | 363 | static int32_t pitch_increase(int32_t pitch, int32_t pitch_delta, bool allow_cutoff |
364 | #if CONFIG_CODEC == SWCODEC | ||
365 | /* need this to maintain correct pitch/speed caps */ | ||
366 | , int32_t speed | ||
367 | #endif | ||
368 | ) | ||
231 | { | 369 | { |
232 | int new_pitch; | 370 | int32_t new_pitch; |
371 | #if CONFIG_CODEC == SWCODEC | ||
372 | int32_t new_stretch; | ||
373 | #endif | ||
374 | at_limit = false; | ||
233 | 375 | ||
234 | if (pitch_delta < 0) | 376 | if (pitch_delta < 0) |
235 | { | 377 | { |
236 | if (pitch + pitch_delta >= PITCH_MIN) | 378 | /* for large jumps, snap up to whole numbers */ |
237 | new_pitch = pitch + pitch_delta; | 379 | if(allow_cutoff && pitch_delta <= -PITCH_SPEED_PRECISION && |
238 | else | 380 | (pitch + pitch_delta) % PITCH_SPEED_PRECISION != 0) |
381 | { | ||
382 | pitch_delta += PITCH_SPEED_PRECISION - ((pitch + pitch_delta) % PITCH_SPEED_PRECISION); | ||
383 | } | ||
384 | |||
385 | new_pitch = pitch + pitch_delta; | ||
386 | |||
387 | if (new_pitch < PITCH_MIN) | ||
239 | { | 388 | { |
240 | if (!allow_cutoff) | 389 | if (!allow_cutoff) |
390 | { | ||
241 | return pitch; | 391 | return pitch; |
392 | } | ||
242 | new_pitch = PITCH_MIN; | 393 | new_pitch = PITCH_MIN; |
394 | at_limit = true; | ||
243 | } | 395 | } |
244 | } | 396 | } |
245 | else if (pitch_delta > 0) | 397 | else if (pitch_delta > 0) |
246 | { | 398 | { |
247 | if (pitch + pitch_delta <= PITCH_MAX) | 399 | /* for large jumps, snap down to whole numbers */ |
248 | new_pitch = pitch + pitch_delta; | 400 | if(allow_cutoff && pitch_delta >= PITCH_SPEED_PRECISION && |
249 | else | 401 | (pitch + pitch_delta) % PITCH_SPEED_PRECISION != 0) |
402 | { | ||
403 | pitch_delta -= (pitch + pitch_delta) % PITCH_SPEED_PRECISION; | ||
404 | } | ||
405 | |||
406 | new_pitch = pitch + pitch_delta; | ||
407 | |||
408 | if (new_pitch > PITCH_MAX) | ||
250 | { | 409 | { |
251 | if (!allow_cutoff) | 410 | if (!allow_cutoff) |
252 | return pitch; | 411 | return pitch; |
253 | new_pitch = PITCH_MAX; | 412 | new_pitch = PITCH_MAX; |
413 | at_limit = true; | ||
254 | } | 414 | } |
255 | } | 415 | } |
256 | else | 416 | else |
@@ -258,47 +418,164 @@ static int pitch_increase(int pitch, int pitch_delta, bool allow_cutoff) | |||
258 | /* pitch_delta == 0 -> no real change */ | 418 | /* pitch_delta == 0 -> no real change */ |
259 | return pitch; | 419 | return pitch; |
260 | } | 420 | } |
421 | #if CONFIG_CODEC == SWCODEC | ||
422 | if (dsp_timestretch_available()) | ||
423 | { | ||
424 | /* increase the multiple to increase precision of this calculation */ | ||
425 | new_stretch = GET_STRETCH(new_pitch, speed); | ||
426 | if(new_stretch < STRETCH_MIN) | ||
427 | { | ||
428 | /* we have to ignore allow_cutoff, because we can't have the */ | ||
429 | /* stretch go higher than STRETCH_MAX */ | ||
430 | new_pitch = GET_PITCH(speed, STRETCH_MIN); | ||
431 | } | ||
432 | else if(new_stretch > STRETCH_MAX) | ||
433 | { | ||
434 | /* we have to ignore allow_cutoff, because we can't have the */ | ||
435 | /* stretch go higher than STRETCH_MAX */ | ||
436 | new_pitch = GET_PITCH(speed, STRETCH_MAX); | ||
437 | } | ||
438 | |||
439 | if(new_stretch >= STRETCH_MAX || | ||
440 | new_stretch <= STRETCH_MIN) | ||
441 | { | ||
442 | at_limit = true; | ||
443 | } | ||
444 | } | ||
445 | #endif | ||
446 | |||
261 | sound_set_pitch(new_pitch); | 447 | sound_set_pitch(new_pitch); |
262 | 448 | ||
263 | return new_pitch; | 449 | return new_pitch; |
264 | } | 450 | } |
265 | 451 | ||
266 | /* Factor for changing the pitch one half tone up. | 452 | static int32_t get_semitone_from_pitch(int32_t pitch) |
267 | The exact value is 2^(1/12) = 1.05946309436 | ||
268 | But we use only integer arithmetics, so take | ||
269 | rounded factor multiplied by 10^5=100,000. This is | ||
270 | enough to get the same promille values as if we | ||
271 | had used floating point (checked with a spread | ||
272 | sheet). | ||
273 | */ | ||
274 | #define PITCH_SEMITONE_FACTOR 105946L | ||
275 | |||
276 | /* Some helpful constants. K is the scaling factor for SEMITONE. | ||
277 | N is for more accurate rounding | ||
278 | KN is K * N | ||
279 | */ | ||
280 | #define PITCH_K_FCT 100000UL | ||
281 | #define PITCH_N_FCT 10 | ||
282 | #define PITCH_KN_FCT 1000000UL | ||
283 | |||
284 | static int pitch_increase_semitone(int pitch, bool up) | ||
285 | { | 453 | { |
286 | uint32_t tmp; | 454 | int semitone = 0; |
287 | uint32_t round_fct; /* How much to scale down at the end */ | 455 | int32_t fractional_index = 0; |
288 | tmp = pitch; | 456 | |
289 | if (up) | 457 | while(semitone < NUM_SEMITONES - 1 && |
458 | pitch >= semitone_table[semitone + 1]) | ||
459 | { | ||
460 | semitone++; | ||
461 | } | ||
462 | |||
463 | |||
464 | /* now find the fractional part */ | ||
465 | while(pitch > (cent_interp[fractional_index + 1] * | ||
466 | semitone_table[semitone] / PITCH_SPEED_100)) | ||
290 | { | 467 | { |
291 | tmp = tmp * PITCH_SEMITONE_FACTOR; | 468 | /* Check to make sure fractional_index isn't too big */ |
292 | round_fct = PITCH_K_FCT; | 469 | /* This should never happen. */ |
470 | if(fractional_index >= CENT_INTERP_NUM - 1) | ||
471 | { | ||
472 | break; | ||
473 | } | ||
474 | fractional_index++; | ||
475 | } | ||
476 | |||
477 | int32_t semitone_pitch_a = cent_interp[fractional_index] * | ||
478 | semitone_table[semitone] / | ||
479 | PITCH_SPEED_100; | ||
480 | int32_t semitone_pitch_b = cent_interp[fractional_index + 1] * | ||
481 | semitone_table[semitone] / | ||
482 | PITCH_SPEED_100; | ||
483 | /* this will be the integer offset from the cent_interp entry */ | ||
484 | int32_t semitone_frac_ofs = (pitch - semitone_pitch_a) * CENT_INTERP_INTERVAL / | ||
485 | (semitone_pitch_b - semitone_pitch_a); | ||
486 | semitone = (semitone + SEMITONE_START) * PITCH_SPEED_PRECISION + | ||
487 | fractional_index * CENT_INTERP_INTERVAL + | ||
488 | semitone_frac_ofs; | ||
489 | |||
490 | return semitone; | ||
491 | } | ||
492 | |||
493 | static int32_t get_pitch_from_semitone(int32_t semitone) | ||
494 | { | ||
495 | int32_t adjusted_semitone = semitone - SEMITONE_START * PITCH_SPEED_PRECISION; | ||
496 | |||
497 | /* Find the index into the semitone table */ | ||
498 | int32_t semitone_index = (adjusted_semitone / PITCH_SPEED_PRECISION); | ||
499 | |||
500 | /* set pitch to the semitone's integer part value */ | ||
501 | int32_t pitch = semitone_table[semitone_index]; | ||
502 | /* get the range of the cent modification for future calculation */ | ||
503 | int32_t pitch_mod_a = | ||
504 | cent_interp[(adjusted_semitone % PITCH_SPEED_PRECISION) / | ||
505 | CENT_INTERP_INTERVAL]; | ||
506 | int32_t pitch_mod_b = | ||
507 | cent_interp[(adjusted_semitone % PITCH_SPEED_PRECISION) / | ||
508 | CENT_INTERP_INTERVAL + 1]; | ||
509 | /* figure out the cent mod amount based on the semitone fractional value */ | ||
510 | int32_t pitch_mod = pitch_mod_a + (pitch_mod_b - pitch_mod_a) * | ||
511 | (adjusted_semitone % CENT_INTERP_INTERVAL) / CENT_INTERP_INTERVAL; | ||
512 | |||
513 | /* modify pitch based on the mod amount we just calculated */ | ||
514 | return (pitch * pitch_mod + PITCH_SPEED_100 / 2) / PITCH_SPEED_100; | ||
515 | } | ||
516 | |||
517 | static int32_t pitch_increase_semitone(int32_t pitch, | ||
518 | int32_t current_semitone, | ||
519 | int32_t semitone_delta | ||
520 | #if CONFIG_CODEC == SWCODEC | ||
521 | , int32_t speed | ||
522 | #endif | ||
523 | ) | ||
524 | { | ||
525 | int32_t new_semitone = current_semitone; | ||
526 | |||
527 | /* snap to the delta interval */ | ||
528 | if(current_semitone % semitone_delta != 0) | ||
529 | { | ||
530 | if(current_semitone > 0 && semitone_delta > 0) | ||
531 | new_semitone += semitone_delta; | ||
532 | else if(current_semitone < 0 && semitone_delta < 0) | ||
533 | new_semitone += semitone_delta; | ||
534 | |||
535 | new_semitone -= new_semitone % semitone_delta; | ||
293 | } | 536 | } |
294 | else | 537 | else |
538 | new_semitone += semitone_delta; | ||
539 | |||
540 | /* clamp the pitch so it doesn't go beyond the pitch limits */ | ||
541 | if(new_semitone < (SEMITONE_START * PITCH_SPEED_PRECISION)) | ||
542 | { | ||
543 | new_semitone = SEMITONE_START * PITCH_SPEED_PRECISION; | ||
544 | at_limit = true; | ||
545 | } | ||
546 | else if(new_semitone > (SEMITONE_END * PITCH_SPEED_PRECISION)) | ||
295 | { | 547 | { |
296 | tmp = (tmp * PITCH_KN_FCT) / PITCH_SEMITONE_FACTOR; | 548 | new_semitone = SEMITONE_END * PITCH_SPEED_PRECISION; |
297 | round_fct = PITCH_N_FCT; | 549 | at_limit = true; |
298 | } | 550 | } |
299 | /* Scaling down with rounding */ | 551 | |
300 | tmp = (tmp + round_fct / 2) / round_fct; | 552 | int32_t new_pitch = get_pitch_from_semitone(new_semitone); |
301 | return pitch_increase(pitch, tmp - pitch, false); | 553 | |
554 | #if CONFIG_CODEC == SWCODEC | ||
555 | int32_t new_stretch = GET_STRETCH(new_pitch, speed); | ||
556 | |||
557 | /* clamp the pitch so it doesn't go beyond the stretch limits */ | ||
558 | if( new_stretch > STRETCH_MAX) | ||
559 | { | ||
560 | new_pitch = GET_PITCH(speed, STRETCH_MAX); | ||
561 | new_semitone = get_semitone_from_pitch(new_pitch); | ||
562 | at_limit = true; | ||
563 | } | ||
564 | else if (new_stretch < STRETCH_MIN) | ||
565 | { | ||
566 | new_pitch = GET_PITCH(speed, STRETCH_MIN); | ||
567 | new_semitone = get_semitone_from_pitch(new_pitch); | ||
568 | at_limit = true; | ||
569 | } | ||
570 | #endif | ||
571 | |||
572 | pitch_increase(pitch, new_pitch - pitch, false | ||
573 | #if CONFIG_CODEC == SWCODEC | ||
574 | , speed | ||
575 | #endif | ||
576 | ); | ||
577 | |||
578 | return new_semitone; | ||
302 | } | 579 | } |
303 | 580 | ||
304 | /* | 581 | /* |
@@ -310,13 +587,11 @@ static int pitch_increase_semitone(int pitch, bool up) | |||
310 | int gui_syncpitchscreen_run(void) | 587 | int gui_syncpitchscreen_run(void) |
311 | { | 588 | { |
312 | int button, i; | 589 | int button, i; |
313 | int pitch = sound_get_pitch(); | 590 | int32_t pitch = sound_get_pitch(); |
314 | #if CONFIG_CODEC == SWCODEC | 591 | int32_t semitone; |
315 | int stretch = dsp_get_timestretch(); | 592 | |
316 | int speed = stretch * pitch; /* speed to maintain */ | 593 | int32_t new_pitch; |
317 | #endif | 594 | int32_t pitch_delta; |
318 | int new_pitch; | ||
319 | int pitch_delta; | ||
320 | bool nudged = false; | 595 | bool nudged = false; |
321 | bool exit = false; | 596 | bool exit = false; |
322 | /* should maybe be passed per parameter later, not needed for now */ | 597 | /* should maybe be passed per parameter later, not needed for now */ |
@@ -324,6 +599,31 @@ int gui_syncpitchscreen_run(void) | |||
324 | struct viewport pitch_viewports[NB_SCREENS][PITCH_ITEM_COUNT]; | 599 | struct viewport pitch_viewports[NB_SCREENS][PITCH_ITEM_COUNT]; |
325 | int max_lines[NB_SCREENS]; | 600 | int max_lines[NB_SCREENS]; |
326 | 601 | ||
602 | #if CONFIG_CODEC == SWCODEC | ||
603 | int32_t new_speed = 0, new_stretch; | ||
604 | |||
605 | /* the speed variable holds the apparent speed of the playback */ | ||
606 | int32_t speed; | ||
607 | if (dsp_timestretch_available()) | ||
608 | { | ||
609 | speed = GET_SPEED(pitch, dsp_get_timestretch()); | ||
610 | } | ||
611 | else | ||
612 | { | ||
613 | speed = pitch; | ||
614 | } | ||
615 | |||
616 | /* Figure out whether to be in timestretch mode */ | ||
617 | if (global_settings.pitch_mode_timestretch && !dsp_timestretch_available()) | ||
618 | { | ||
619 | global_settings.pitch_mode_timestretch = false; | ||
620 | settings_save(); | ||
621 | } | ||
622 | #endif | ||
623 | |||
624 | /* set the semitone index based on the current pitch */ | ||
625 | semitone = get_semitone_from_pitch(pitch); | ||
626 | |||
327 | /* initialize pitchscreen vps */ | 627 | /* initialize pitchscreen vps */ |
328 | FOR_NB_SCREENS(i) | 628 | FOR_NB_SCREENS(i) |
329 | { | 629 | { |
@@ -343,49 +643,80 @@ int gui_syncpitchscreen_run(void) | |||
343 | { | 643 | { |
344 | FOR_NB_SCREENS(i) | 644 | FOR_NB_SCREENS(i) |
345 | pitchscreen_draw(&screens[i], max_lines[i], | 645 | pitchscreen_draw(&screens[i], max_lines[i], |
346 | pitch_viewports[i], pitch | 646 | pitch_viewports[i], pitch, semitone |
347 | #if CONFIG_CODEC == SWCODEC | 647 | #if CONFIG_CODEC == SWCODEC |
348 | , speed | 648 | , speed |
349 | #endif | 649 | #endif |
350 | ); | 650 | ); |
351 | pitch_delta = 0; | 651 | pitch_delta = 0; |
652 | #if CONFIG_CODEC == SWCODEC | ||
653 | new_speed = 0; | ||
654 | #endif | ||
352 | button = get_action(CONTEXT_PITCHSCREEN, HZ); | 655 | button = get_action(CONTEXT_PITCHSCREEN, HZ); |
353 | switch (button) | 656 | switch (button) |
354 | { | 657 | { |
355 | case ACTION_PS_INC_SMALL: | 658 | case ACTION_PS_INC_SMALL: |
356 | pitch_delta = PITCH_SMALL_DELTA; | 659 | if(global_settings.pitch_mode_semitone) |
660 | pitch_delta = SEMITONE_SMALL_DELTA; | ||
661 | else | ||
662 | pitch_delta = PITCH_SMALL_DELTA; | ||
357 | break; | 663 | break; |
358 | 664 | ||
359 | case ACTION_PS_INC_BIG: | 665 | case ACTION_PS_INC_BIG: |
360 | pitch_delta = PITCH_BIG_DELTA; | 666 | if(global_settings.pitch_mode_semitone) |
667 | pitch_delta = SEMITONE_BIG_DELTA; | ||
668 | else | ||
669 | pitch_delta = PITCH_BIG_DELTA; | ||
361 | break; | 670 | break; |
362 | 671 | ||
363 | case ACTION_PS_DEC_SMALL: | 672 | case ACTION_PS_DEC_SMALL: |
364 | pitch_delta = -PITCH_SMALL_DELTA; | 673 | if(global_settings.pitch_mode_semitone) |
674 | pitch_delta = -SEMITONE_SMALL_DELTA; | ||
675 | else | ||
676 | pitch_delta = -PITCH_SMALL_DELTA; | ||
365 | break; | 677 | break; |
366 | 678 | ||
367 | case ACTION_PS_DEC_BIG: | 679 | case ACTION_PS_DEC_BIG: |
368 | pitch_delta = -PITCH_BIG_DELTA; | 680 | if(global_settings.pitch_mode_semitone) |
681 | pitch_delta = -SEMITONE_BIG_DELTA; | ||
682 | else | ||
683 | pitch_delta = -PITCH_BIG_DELTA; | ||
369 | break; | 684 | break; |
370 | 685 | ||
371 | case ACTION_PS_NUDGE_RIGHT: | 686 | case ACTION_PS_NUDGE_RIGHT: |
372 | #if CONFIG_CODEC == SWCODEC | 687 | #if CONFIG_CODEC == SWCODEC |
373 | if (!pitch_mode_timestretch) | 688 | if (!global_settings.pitch_mode_timestretch) |
374 | { | 689 | { |
375 | #endif | 690 | #endif |
376 | new_pitch = pitch_increase(pitch, PITCH_NUDGE_DELTA, false); | 691 | new_pitch = pitch_increase(pitch, PITCH_NUDGE_DELTA, false |
692 | #if CONFIG_CODEC == SWCODEC | ||
693 | , speed | ||
694 | #endif | ||
695 | ); | ||
377 | nudged = (new_pitch != pitch); | 696 | nudged = (new_pitch != pitch); |
378 | pitch = new_pitch; | 697 | pitch = new_pitch; |
698 | semitone = get_semitone_from_pitch(pitch); | ||
699 | #if CONFIG_CODEC == SWCODEC | ||
700 | speed = pitch; | ||
701 | #endif | ||
379 | break; | 702 | break; |
380 | #if CONFIG_CODEC == SWCODEC | 703 | #if CONFIG_CODEC == SWCODEC |
381 | } | 704 | } |
705 | else | ||
706 | { | ||
707 | new_speed = speed + SPEED_SMALL_DELTA; | ||
708 | at_limit = false; | ||
709 | } | ||
710 | break; | ||
382 | 711 | ||
383 | case ACTION_PS_FASTER: | 712 | case ACTION_PS_FASTER: |
384 | if (pitch_mode_timestretch && stretch < STRETCH_MAX) | 713 | if (global_settings.pitch_mode_timestretch) |
385 | { | 714 | { |
386 | stretch++; | 715 | new_speed = speed + SPEED_BIG_DELTA; |
387 | dsp_set_timestretch(stretch); | 716 | /* snap to whole numbers */ |
388 | speed = stretch * pitch; | 717 | if(new_speed % PITCH_SPEED_PRECISION != 0) |
718 | new_speed -= new_speed % PITCH_SPEED_PRECISION; | ||
719 | at_limit = false; | ||
389 | } | 720 | } |
390 | break; | 721 | break; |
391 | #endif | 722 | #endif |
@@ -393,29 +724,53 @@ int gui_syncpitchscreen_run(void) | |||
393 | case ACTION_PS_NUDGE_RIGHTOFF: | 724 | case ACTION_PS_NUDGE_RIGHTOFF: |
394 | if (nudged) | 725 | if (nudged) |
395 | { | 726 | { |
396 | pitch = pitch_increase(pitch, -PITCH_NUDGE_DELTA, false); | 727 | pitch = pitch_increase(pitch, -PITCH_NUDGE_DELTA, false |
728 | #if CONFIG_CODEC == SWCODEC | ||
729 | , speed | ||
730 | #endif | ||
731 | ); | ||
732 | #if CONFIG_CODEC == SWCODEC | ||
733 | speed = pitch; | ||
734 | #endif | ||
735 | semitone = get_semitone_from_pitch(pitch); | ||
397 | nudged = false; | 736 | nudged = false; |
398 | } | 737 | } |
399 | break; | 738 | break; |
400 | 739 | ||
401 | case ACTION_PS_NUDGE_LEFT: | 740 | case ACTION_PS_NUDGE_LEFT: |
402 | #if CONFIG_CODEC == SWCODEC | 741 | #if CONFIG_CODEC == SWCODEC |
403 | if (!pitch_mode_timestretch) | 742 | if (!global_settings.pitch_mode_timestretch) |
404 | { | 743 | { |
405 | #endif | 744 | #endif |
406 | new_pitch = pitch_increase(pitch, -PITCH_NUDGE_DELTA, false); | 745 | new_pitch = pitch_increase(pitch, -PITCH_NUDGE_DELTA, false |
746 | #if CONFIG_CODEC == SWCODEC | ||
747 | , speed | ||
748 | #endif | ||
749 | ); | ||
407 | nudged = (new_pitch != pitch); | 750 | nudged = (new_pitch != pitch); |
408 | pitch = new_pitch; | 751 | pitch = new_pitch; |
752 | semitone = get_semitone_from_pitch(pitch); | ||
753 | #if CONFIG_CODEC == SWCODEC | ||
754 | speed = pitch; | ||
755 | #endif | ||
409 | break; | 756 | break; |
410 | #if CONFIG_CODEC == SWCODEC | 757 | #if CONFIG_CODEC == SWCODEC |
411 | } | 758 | } |
759 | else | ||
760 | { | ||
761 | new_speed = speed - SPEED_SMALL_DELTA; | ||
762 | at_limit = false; | ||
763 | } | ||
764 | break; | ||
412 | 765 | ||
413 | case ACTION_PS_SLOWER: | 766 | case ACTION_PS_SLOWER: |
414 | if (pitch_mode_timestretch && stretch > STRETCH_MIN) | 767 | if (global_settings.pitch_mode_timestretch) |
415 | { | 768 | { |
416 | stretch--; | 769 | new_speed = speed - SPEED_BIG_DELTA; |
417 | dsp_set_timestretch(stretch); | 770 | /* snap to whole numbers */ |
418 | speed = stretch * pitch; | 771 | if(new_speed % PITCH_SPEED_PRECISION != 0) |
772 | new_speed += PITCH_SPEED_PRECISION - speed % PITCH_SPEED_PRECISION; | ||
773 | at_limit = false; | ||
419 | } | 774 | } |
420 | break; | 775 | break; |
421 | #endif | 776 | #endif |
@@ -423,27 +778,49 @@ int gui_syncpitchscreen_run(void) | |||
423 | case ACTION_PS_NUDGE_LEFTOFF: | 778 | case ACTION_PS_NUDGE_LEFTOFF: |
424 | if (nudged) | 779 | if (nudged) |
425 | { | 780 | { |
426 | pitch = pitch_increase(pitch, PITCH_NUDGE_DELTA, false); | 781 | pitch = pitch_increase(pitch, PITCH_NUDGE_DELTA, false |
782 | #if CONFIG_CODEC == SWCODEC | ||
783 | , speed | ||
784 | #endif | ||
785 | ); | ||
786 | #if CONFIG_CODEC == SWCODEC | ||
787 | speed = pitch; | ||
788 | #endif | ||
789 | semitone = get_semitone_from_pitch(pitch); | ||
427 | nudged = false; | 790 | nudged = false; |
428 | } | 791 | } |
429 | break; | 792 | break; |
430 | 793 | ||
431 | case ACTION_PS_RESET: | 794 | case ACTION_PS_RESET: |
432 | pitch = 1000; | 795 | pitch = PITCH_SPEED_100; |
433 | sound_set_pitch(pitch); | 796 | sound_set_pitch(pitch); |
434 | #if CONFIG_CODEC == SWCODEC | 797 | #if CONFIG_CODEC == SWCODEC |
435 | stretch = 100; | 798 | speed = PITCH_SPEED_100; |
436 | dsp_set_timestretch(stretch); | 799 | if (dsp_timestretch_available()) |
437 | speed = stretch * pitch; | 800 | { |
801 | dsp_set_timestretch(PITCH_SPEED_100); | ||
802 | at_limit = false; | ||
803 | } | ||
438 | #endif | 804 | #endif |
805 | semitone = get_semitone_from_pitch(pitch); | ||
439 | break; | 806 | break; |
440 | 807 | ||
441 | case ACTION_PS_TOGGLE_MODE: | 808 | case ACTION_PS_TOGGLE_MODE: |
809 | global_settings.pitch_mode_semitone = !global_settings.pitch_mode_semitone; | ||
442 | #if CONFIG_CODEC == SWCODEC | 810 | #if CONFIG_CODEC == SWCODEC |
443 | if (dsp_timestretch_available() && pitch_mode_semitone) | 811 | |
444 | pitch_mode_timestretch = !pitch_mode_timestretch; | 812 | if (dsp_timestretch_available() && !global_settings.pitch_mode_semitone) |
813 | { | ||
814 | global_settings.pitch_mode_timestretch = !global_settings.pitch_mode_timestretch; | ||
815 | if(!global_settings.pitch_mode_timestretch) | ||
816 | { | ||
817 | /* no longer in timestretch mode. Reset speed */ | ||
818 | speed = pitch; | ||
819 | dsp_set_timestretch(PITCH_SPEED_100); | ||
820 | } | ||
821 | } | ||
822 | settings_save(); | ||
445 | #endif | 823 | #endif |
446 | pitch_mode_semitone = !pitch_mode_semitone; | ||
447 | break; | 824 | break; |
448 | 825 | ||
449 | case ACTION_PS_EXIT: | 826 | case ACTION_PS_EXIT: |
@@ -457,27 +834,73 @@ int gui_syncpitchscreen_run(void) | |||
457 | } | 834 | } |
458 | if (pitch_delta) | 835 | if (pitch_delta) |
459 | { | 836 | { |
460 | if (pitch_mode_semitone) | 837 | if (global_settings.pitch_mode_semitone) |
461 | pitch = pitch_increase_semitone(pitch, pitch_delta > 0); | 838 | { |
839 | semitone = pitch_increase_semitone(pitch, semitone, pitch_delta | ||
840 | #if CONFIG_CODEC == SWCODEC | ||
841 | , speed | ||
842 | #endif | ||
843 | ); | ||
844 | pitch = get_pitch_from_semitone(semitone); | ||
845 | } | ||
462 | else | 846 | else |
463 | pitch = pitch_increase(pitch, pitch_delta, true); | 847 | { |
848 | pitch = pitch_increase(pitch, pitch_delta, true | ||
464 | #if CONFIG_CODEC == SWCODEC | 849 | #if CONFIG_CODEC == SWCODEC |
465 | if (pitch_mode_timestretch) | 850 | , speed |
851 | #endif | ||
852 | ); | ||
853 | semitone = get_semitone_from_pitch(pitch); | ||
854 | } | ||
855 | #if CONFIG_CODEC == SWCODEC | ||
856 | if (global_settings.pitch_mode_timestretch) | ||
466 | { | 857 | { |
467 | /* Set stretch to maintain speed */ | 858 | /* do this to make sure we properly obey the stretch limits */ |
468 | /* i.e. increase pitch, reduce stretch */ | 859 | new_speed = speed; |
469 | int new_stretch = speed / pitch; | ||
470 | if (new_stretch >= STRETCH_MIN && new_stretch <= STRETCH_MAX) | ||
471 | { | ||
472 | stretch = new_stretch; | ||
473 | dsp_set_timestretch(stretch); | ||
474 | } | ||
475 | } | 860 | } |
476 | else | 861 | else |
477 | speed = stretch * pitch; | 862 | { |
478 | #endif | 863 | speed = pitch; |
864 | } | ||
865 | #endif | ||
479 | } | 866 | } |
480 | } | 867 | |
868 | #if CONFIG_CODEC == SWCODEC | ||
869 | if(new_speed) | ||
870 | { | ||
871 | new_stretch = GET_STRETCH(pitch, new_speed); | ||
872 | |||
873 | /* limit the amount of stretch */ | ||
874 | if(new_stretch > STRETCH_MAX) | ||
875 | { | ||
876 | new_stretch = STRETCH_MAX; | ||
877 | new_speed = GET_SPEED(pitch, new_stretch); | ||
878 | } | ||
879 | else if(new_stretch < STRETCH_MIN) | ||
880 | { | ||
881 | new_stretch = STRETCH_MIN; | ||
882 | new_speed = GET_SPEED(pitch, new_stretch); | ||
883 | } | ||
884 | |||
885 | new_stretch = GET_STRETCH(pitch, new_speed); | ||
886 | if(new_stretch >= STRETCH_MAX || | ||
887 | new_stretch <= STRETCH_MIN) | ||
888 | { | ||
889 | at_limit = true; | ||
890 | } | ||
891 | |||
892 | /* set the amount of stretch */ | ||
893 | dsp_set_timestretch(new_stretch); | ||
894 | |||
895 | /* update the speed variable with the new speed */ | ||
896 | speed = new_speed; | ||
897 | |||
898 | /* Reset new_speed so we only call dsp_set_timestretch */ | ||
899 | /* when needed */ | ||
900 | new_speed = 0; | ||
901 | } | ||
902 | #endif | ||
903 | } | ||
481 | #if CONFIG_CODEC == SWCODEC | 904 | #if CONFIG_CODEC == SWCODEC |
482 | pcmbuf_set_low_latency(false); | 905 | pcmbuf_set_low_latency(false); |
483 | #endif | 906 | #endif |