Lines Matching +full:convert +full:- +full:channels
1 // SPDX-License-Identifier: GPL-2.0-or-later
17 * define the following if you want to use this pcm with non-interleaved mode
21 /* NOTE: for using the non-interleaved mode with alsa-lib, you have to set
34 * besides, for the time being, the non-interleaved mode doesn't work well on
35 * alsa-lib...
65 * open up channels for the simultaneous data transfer and playback
68 emu8k_open_dram_for_pcm(struct snd_emu8000 *emu, int channels) in emu8k_open_dram_for_pcm() argument
73 snd_emux_lock_voice(emu->emu, 0); in emu8k_open_dram_for_pcm()
74 if (channels > 1) in emu8k_open_dram_for_pcm()
75 snd_emux_lock_voice(emu->emu, 1); in emu8k_open_dram_for_pcm()
78 for (i = channels + 1; i < EMU8000_DRAM_VOICES; i++) { in emu8k_open_dram_for_pcm()
80 snd_emux_lock_voice(emu->emu, i); in emu8k_open_dram_for_pcm()
82 if (channels > 1 && (i & 1) != 0) in emu8k_open_dram_for_pcm()
116 * close all channels
124 snd_emux_unlock_voice(emu->emu, i); in emu8k_close_dram()
127 snd_emux_unlock_voice(emu->emu, i); in emu8k_close_dram()
132 * convert Hz to AWE32 rate offset (see emux/soundfont.c)
173 int val = EMU8000_CCCA_READ(rec->emu, ch) & 0xfffffff; in emu8k_get_curpos()
174 val -= rec->loop_start[ch] - 1; in emu8k_get_curpos()
188 spin_lock(&rec->timer_lock); in emu8k_pcm_timer_func()
191 if (ptr < rec->last_ptr) in emu8k_pcm_timer_func()
192 delta = ptr + rec->buf_size - rec->last_ptr; in emu8k_pcm_timer_func()
194 delta = ptr - rec->last_ptr; in emu8k_pcm_timer_func()
195 rec->period_pos += delta; in emu8k_pcm_timer_func()
196 rec->last_ptr = ptr; in emu8k_pcm_timer_func()
199 mod_timer(&rec->timer, jiffies + 1); in emu8k_pcm_timer_func()
202 if (rec->period_pos >= (int)rec->period_size) { in emu8k_pcm_timer_func()
203 rec->period_pos %= rec->period_size; in emu8k_pcm_timer_func()
204 spin_unlock(&rec->timer_lock); in emu8k_pcm_timer_func()
205 snd_pcm_period_elapsed(rec->substream); in emu8k_pcm_timer_func()
208 spin_unlock(&rec->timer_lock); in emu8k_pcm_timer_func()
220 struct snd_pcm_runtime *runtime = subs->runtime; in emu8k_pcm_open()
224 return -ENOMEM; in emu8k_pcm_open()
226 rec->emu = emu; in emu8k_pcm_open()
227 rec->substream = subs; in emu8k_pcm_open()
228 runtime->private_data = rec; in emu8k_pcm_open()
230 spin_lock_init(&rec->timer_lock); in emu8k_pcm_open()
231 timer_setup(&rec->timer, emu8k_pcm_timer_func, 0); in emu8k_pcm_open()
233 runtime->hw = emu8k_pcm_hw; in emu8k_pcm_open()
234 runtime->hw.buffer_bytes_max = emu->mem_size - LOOP_BLANK_SIZE * 3; in emu8k_pcm_open()
235 runtime->hw.period_bytes_max = runtime->hw.buffer_bytes_max / 2; in emu8k_pcm_open()
239 (1000000 + HZ - 1) / HZ, UINT_MAX); in emu8k_pcm_open()
246 struct snd_emu8k_pcm *rec = subs->runtime->private_data; in emu8k_pcm_close()
248 subs->runtime->private_data = NULL; in emu8k_pcm_close()
271 struct snd_emu8000 *hw = rec->emu; in setup_voice()
282 EMU8000_IP_WRITE(hw, ch, rec->pitch); in setup_voice()
303 temp = rec->panning[ch]; in setup_voice()
304 temp = (temp <<24) | ((unsigned int)rec->loop_start[ch] - 1); in setup_voice()
308 temp = (temp << 24) | ((unsigned int)rec->loop_start[ch] + rec->buf_size - 1); in setup_voice()
312 temp = (temp << 28) | ((unsigned int)rec->loop_start[ch] - 1); in setup_voice()
325 struct snd_emu8000 *hw = rec->emu; in start_voice()
327 int pt = calc_pitch_target(rec->pitch); in start_voice()
337 if (rec->panning[ch] == 0) in start_voice()
340 aux = (-rec->panning[ch]) & 0xff; in start_voice()
346 spin_lock_irqsave(&rec->timer_lock, flags); in start_voice()
347 if (! rec->timer_running) { in start_voice()
348 mod_timer(&rec->timer, jiffies + 1); in start_voice()
349 rec->timer_running = 1; in start_voice()
351 spin_unlock_irqrestore(&rec->timer_lock, flags); in start_voice()
360 struct snd_emu8000 *hw = rec->emu; in stop_voice()
365 spin_lock_irqsave(&rec->timer_lock, flags); in stop_voice()
366 if (rec->timer_running) { in stop_voice()
367 del_timer(&rec->timer); in stop_voice()
368 rec->timer_running = 0; in stop_voice()
370 spin_unlock_irqrestore(&rec->timer_lock, flags); in stop_voice()
375 struct snd_emu8k_pcm *rec = subs->runtime->private_data; in emu8k_pcm_trigger()
380 for (ch = 0; ch < rec->voices; ch++) in emu8k_pcm_trigger()
382 rec->running = 1; in emu8k_pcm_trigger()
385 rec->running = 0; in emu8k_pcm_trigger()
386 for (ch = 0; ch < rec->voices; ch++) in emu8k_pcm_trigger()
390 return -EINVAL; in emu8k_pcm_trigger()
409 return -EAGAIN;\
427 return -EFAULT; \
437 struct snd_emu8000 *emu = (rec)->emu; \
446 count--; \
455 struct snd_emu8k_pcm *rec = subs->runtime->private_data; in emu8k_pcm_copy()
457 /* convert to word unit */ in emu8k_pcm_copy()
458 pos = (pos << 1) + rec->loop_start[voice]; in emu8k_pcm_copy()
468 struct snd_emu8k_pcm *rec = subs->runtime->private_data; in emu8k_pcm_copy_kernel()
470 /* convert to word unit */ in emu8k_pcm_copy_kernel()
471 pos = (pos << 1) + rec->loop_start[voice]; in emu8k_pcm_copy_kernel()
481 struct snd_emu8k_pcm *rec = subs->runtime->private_data; in emu8k_pcm_silence()
483 /* convert to word unit */ in emu8k_pcm_silence()
484 pos = (pos << 1) + rec->loop_start[voice]; in emu8k_pcm_silence()
494 struct snd_emu8000 *emu = rec->emu; \
497 EMU8000_SMALW_WRITE(emu, pos + rec->loop_start[0]); \
498 if (rec->voices > 1) \
499 EMU8000_SMARW_WRITE(emu, pos + rec->loop_start[1]); \
505 if (rec->voices > 1) { \
510 count--; \
517 * DMA "left" and "right" channels on emu8k engine.
523 struct snd_emu8k_pcm *rec = subs->runtime->private_data; in emu8k_pcm_copy()
525 /* convert to frames */ in emu8k_pcm_copy()
526 pos = bytes_to_frames(subs->runtime, pos); in emu8k_pcm_copy()
527 count = bytes_to_frames(subs->runtime, count); in emu8k_pcm_copy()
536 struct snd_emu8k_pcm *rec = subs->runtime->private_data; in emu8k_pcm_copy_kernel()
538 /* convert to frames */ in emu8k_pcm_copy_kernel()
539 pos = bytes_to_frames(subs->runtime, pos); in emu8k_pcm_copy_kernel()
540 count = bytes_to_frames(subs->runtime, count); in emu8k_pcm_copy_kernel()
548 struct snd_emu8k_pcm *rec = subs->runtime->private_data; in emu8k_pcm_silence()
550 /* convert to frames */ in emu8k_pcm_silence()
551 pos = bytes_to_frames(subs->runtime, pos); in emu8k_pcm_silence()
552 count = bytes_to_frames(subs->runtime, count); in emu8k_pcm_silence()
565 struct snd_emu8k_pcm *rec = subs->runtime->private_data; in emu8k_pcm_hw_params()
567 if (rec->block) { in emu8k_pcm_hw_params()
568 /* reallocation - release the old block */ in emu8k_pcm_hw_params()
569 snd_util_mem_free(rec->emu->memhdr, rec->block); in emu8k_pcm_hw_params()
570 rec->block = NULL; in emu8k_pcm_hw_params()
573 rec->allocated_bytes = params_buffer_bytes(hw_params) + LOOP_BLANK_SIZE * 4; in emu8k_pcm_hw_params()
574 rec->block = snd_util_mem_alloc(rec->emu->memhdr, rec->allocated_bytes); in emu8k_pcm_hw_params()
575 if (! rec->block) in emu8k_pcm_hw_params()
576 return -ENOMEM; in emu8k_pcm_hw_params()
577 rec->offset = EMU8000_DRAM_OFFSET + (rec->block->offset >> 1); /* in word */ in emu8k_pcm_hw_params()
578 /* at least dma_bytes must be set for non-interleaved mode */ in emu8k_pcm_hw_params()
579 subs->dma_buffer.bytes = params_buffer_bytes(hw_params); in emu8k_pcm_hw_params()
589 struct snd_emu8k_pcm *rec = subs->runtime->private_data; in emu8k_pcm_hw_free()
591 if (rec->block) { in emu8k_pcm_hw_free()
593 for (ch = 0; ch < rec->voices; ch++) in emu8k_pcm_hw_free()
595 if (rec->dram_opened) in emu8k_pcm_hw_free()
596 emu8k_close_dram(rec->emu); in emu8k_pcm_hw_free()
597 snd_util_mem_free(rec->emu->memhdr, rec->block); in emu8k_pcm_hw_free()
598 rec->block = NULL; in emu8k_pcm_hw_free()
607 struct snd_emu8k_pcm *rec = subs->runtime->private_data; in emu8k_pcm_prepare()
609 rec->pitch = 0xe000 + calc_rate_offset(subs->runtime->rate); in emu8k_pcm_prepare()
610 rec->last_ptr = 0; in emu8k_pcm_prepare()
611 rec->period_pos = 0; in emu8k_pcm_prepare()
613 rec->buf_size = subs->runtime->buffer_size; in emu8k_pcm_prepare()
614 rec->period_size = subs->runtime->period_size; in emu8k_pcm_prepare()
615 rec->voices = subs->runtime->channels; in emu8k_pcm_prepare()
616 rec->loop_start[0] = rec->offset + LOOP_BLANK_SIZE; in emu8k_pcm_prepare()
617 if (rec->voices > 1) in emu8k_pcm_prepare()
618 rec->loop_start[1] = rec->loop_start[0] + rec->buf_size + LOOP_BLANK_SIZE; in emu8k_pcm_prepare()
619 if (rec->voices > 1) { in emu8k_pcm_prepare()
620 rec->panning[0] = 0xff; in emu8k_pcm_prepare()
621 rec->panning[1] = 0x00; in emu8k_pcm_prepare()
623 rec->panning[0] = 0x80; in emu8k_pcm_prepare()
625 if (! rec->dram_opened) { in emu8k_pcm_prepare()
628 snd_emux_terminate_all(rec->emu->emu); in emu8k_pcm_prepare()
629 if ((err = emu8k_open_dram_for_pcm(rec->emu, rec->voices)) != 0) in emu8k_pcm_prepare()
631 rec->dram_opened = 1; in emu8k_pcm_prepare()
634 snd_emu8000_write_wait(rec->emu, 0); in emu8k_pcm_prepare()
635 EMU8000_SMALW_WRITE(rec->emu, rec->offset); in emu8k_pcm_prepare()
637 EMU8000_SMLD_WRITE(rec->emu, 0); in emu8k_pcm_prepare()
638 for (ch = 0; ch < rec->voices; ch++) { in emu8k_pcm_prepare()
639 EMU8000_SMALW_WRITE(rec->emu, rec->loop_start[ch] + rec->buf_size); in emu8k_pcm_prepare()
641 EMU8000_SMLD_WRITE(rec->emu, 0); in emu8k_pcm_prepare()
646 if (rec->voices > 1) in emu8k_pcm_prepare()
653 struct snd_emu8k_pcm *rec = subs->runtime->private_data; in emu8k_pcm_pointer()
654 if (rec->running) in emu8k_pcm_pointer()
676 struct snd_emu8000 *emu = pcm->private_data; in snd_emu8000_pcm_free()
677 emu->pcm = NULL; in snd_emu8000_pcm_free()
687 pcm->private_data = emu; in snd_emu8000_pcm_new()
688 pcm->private_free = snd_emu8000_pcm_free; in snd_emu8000_pcm_new()
690 emu->pcm = pcm; in snd_emu8000_pcm_new()