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@ -24,6 +24,8 @@
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* THE SOFTWARE.
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*/
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#include "shared-bindings/audiocore/Mixer.h"
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#include "shared-bindings/audiocore/MixerVoice.h"
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#include "shared-module/audiocore/MixerVoice.h"
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#include <stdint.h>
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@ -43,33 +45,43 @@
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//|
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//| Mixer mixes multiple samples into one sample.
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//|
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//| .. class:: Mixer(channel_count=2, buffer_size=1024)
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//| .. class:: Mixer(voice_count=2, buffer_size=1024, channel_count=2, bits_per_sample=16, samples_signed=True, sample_rate=8000)
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//|
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//| Create a Mixer object that can mix multiple channels with the same sample rate.
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//| Samples are accessed and controlled with the mixer's `audioio.MixerVoice` objects.
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//|
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//| :param int channel_count: The maximum number of samples to mix at once
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//| :param int voice_count: The maximum number of voices to mix
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//| :param int buffer_size: The total size in bytes of the buffers to mix into
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//| :param int channel_count: The maximum number of samples to mix at once
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//| :param int bits_per_sample: The bits per sample of the samples being played
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//| :param bool samples_signed: Samples are signed (True) or unsigned (False)
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//| :param int sample_rate: The sample rate to be used for all samples
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//|
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//| Playing a wave file from flash::
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//|
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//| import board
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//| import audioio
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//| import audiocore
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//| import digitalio
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//|
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//| # Required for CircuitPlayground Express
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//| speaker_enable = digitalio.DigitalInOut(board.SPEAKER_ENABLE)
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//| speaker_enable.switch_to_output(value=True)
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//|
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//| music = audioio.WaveFile(open("cplay-5.1-16bit-16khz.wav", "rb"))
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//| drum = audioio.WaveFile(open("drum.wav", "rb"))
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//| mixer = audioio.Mixer(voice_count=2, sample_rate=16000, channel_count=1, bits_per_sample=16, samples_signed=True)
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//| music = audiocore.WaveFile(open("cplay-5.1-16bit-16khz.wav", "rb"))
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//| drum = audiocore.WaveFile(open("drum.wav", "rb"))
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//| mixer = audiocore.Mixer(voice_count=2, sample_rate=16000, channel_count=1,
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//| bits_per_sample=16, samples_signed=True)
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//| a = audioio.AudioOut(board.A0)
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//|
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//| print("playing")
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//| # Have AudioOut play our Mixer source
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//| a.play(mixer)
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//| mixer.play(music, voice=0)
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//| # Play the first sample voice
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//| mixer.voice[0].play(music)
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//| while mixer.playing:
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//| mixer.play(drum, voice=1)
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//| # Play the second sample voice
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//| mixer.voice[1].play(drum)
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//| time.sleep(1)
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//| print("stopped")
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//|
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@ -151,54 +163,6 @@ STATIC mp_obj_t audioio_mixer_obj___exit__(size_t n_args, const mp_obj_t *args)
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(audioio_mixer___exit___obj, 4, 4, audioio_mixer_obj___exit__);
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//| .. method:: play(sample, *, voice=0, loop=False)
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//|
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//| Plays the sample once when loop=False and continuously when loop=True.
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//| Does not block. Use `playing` to block.
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//|
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//| Sample must be an `audioio.WaveFile`, `audioio.Mixer` or `audioio.RawSample`.
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//|
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//| The sample must match the Mixer's encoding settings given in the constructor.
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//|
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STATIC mp_obj_t audioio_mixer_obj_play(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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enum { ARG_sample, ARG_voice, ARG_loop };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_sample, MP_ARG_OBJ | MP_ARG_REQUIRED },
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{ MP_QSTR_voice, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0} },
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{ MP_QSTR_loop, MP_ARG_BOOL | MP_ARG_KW_ONLY, {.u_bool = false} },
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};
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audioio_mixer_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
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check_for_deinit(self);
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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mp_obj_t sample = args[ARG_sample].u_obj;
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common_hal_audioio_mixer_play(self, sample, args[ARG_voice].u_int, args[ARG_loop].u_bool);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_KW(audioio_mixer_play_obj, 1, audioio_mixer_obj_play);
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//| .. method:: stop_voice(voice=0)
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//|
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//| Stops playback of the sample on the given voice.
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//|
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STATIC mp_obj_t audioio_mixer_obj_stop_voice(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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enum { ARG_voice };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_voice, MP_ARG_INT, {.u_int = 0} },
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};
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audioio_mixer_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
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check_for_deinit(self);
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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common_hal_audioio_mixer_stop_voice(self, args[ARG_voice].u_int);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_KW(audioio_mixer_stop_voice_obj, 1, audioio_mixer_obj_stop_voice);
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//| .. attribute:: playing
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//|
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//| True when any voice is being output. (read-only)
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@ -237,11 +201,15 @@ const mp_obj_property_t audioio_mixer_sample_rate_obj = {
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//| .. attribute:: voice
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//|
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//| tuple of voice objects
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//| A tuple of the mixer's `audioio.MixerVoice` object(s).
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//|
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//| .. code-block:: python
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//|
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//| >>> mixer.voice
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//| (<MixerVoice>,)
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STATIC mp_obj_t audioio_mixer_obj_get_voice(mp_obj_t self_in) {
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audioio_mixer_obj_t *self = MP_OBJ_TO_PTR(self_in);
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raise_error_if_deinited(common_hal_audioio_mixer_deinited(self));
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check_for_deinit(self);
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return self->voice_tuple;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(audioio_mixer_get_voice_obj, audioio_mixer_obj_get_voice);
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sommersoft
4 years ago