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cb04b8167c
the added sampr_changed callback can be used to notify the mixer user of frequency changes Change-Id: I309db76576090fd5c019a1ba082af446129dd4a3
90 lines
1.8 KiB
C
90 lines
1.8 KiB
C
#include "rockmacros.h"
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#include "defs.h"
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#include "pcm.h"
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struct pcm pcm IBSS_ATTR;
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#define N_BUFS 2
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#define BUF_SIZE 2048
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bool doneplay=1;
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bool bufnum=0;
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static unsigned short *buf=0, *hwbuf=0;
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static bool newly_started;
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static void get_more(const void** start, size_t* size)
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{
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memcpy(hwbuf, &buf[pcm.len*doneplay], BUF_SIZE*sizeof(short));
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*start = hwbuf;
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*size = BUF_SIZE*sizeof(short);
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doneplay=1;
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}
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void rockboy_pcm_init(void)
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{
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if(plugbuf)
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return;
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newly_started = true;
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#if defined(HW_HAVE_11) && !defined(TOSHIBA_GIGABEAT_F)
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pcm.hz = SAMPR_11;
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#else
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pcm.hz = SAMPR_44;
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#endif
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pcm.stereo = 1;
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pcm.len = BUF_SIZE;
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if(!buf)
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{
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buf = my_malloc(pcm.len * N_BUFS *sizeof(short));
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hwbuf = my_malloc(pcm.len *sizeof(short));
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pcm.buf = buf;
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pcm.pos = 0;
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memset(buf, 0, pcm.len * N_BUFS*sizeof(short));
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}
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rb->audio_stop();
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#if INPUT_SRC_CAPS != 0
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/* Select playback */
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rb->audio_set_input_source(AUDIO_SRC_PLAYBACK, SRCF_PLAYBACK);
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rb->audio_set_output_source(AUDIO_SRC_PLAYBACK);
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#endif
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rb->mixer_set_frequency(pcm.hz); /* 44100 22050 11025 */
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}
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void rockboy_pcm_close(void)
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{
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memset(&pcm, 0, sizeof pcm);
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newly_started = true;
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rb->mixer_channel_stop(PCM_MIXER_CHAN_PLAYBACK);
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rb->mixer_set_frequency(HW_SAMPR_DEFAULT);
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}
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int rockboy_pcm_submit(void)
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{
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if (!pcm.buf) return 0;
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if (pcm.pos < pcm.len) return 1;
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if(newly_started)
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{
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static const struct mixer_play_cbs cbs = {
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.get_more = get_more,
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};
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rb->mixer_channel_play_data(PCM_MIXER_CHAN_PLAYBACK, &cbs, NULL, 0);
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newly_started = false;
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}
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while (!doneplay)
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{rb->yield();}
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doneplay=0;
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pcm.pos = 0;
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return 1;
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}
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