diff options
Diffstat (limited to 'shared-bindings/audiocore/WaveFile.c')
| -rw-r--r-- | shared-bindings/audiocore/WaveFile.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/shared-bindings/audiocore/WaveFile.c b/shared-bindings/audiocore/WaveFile.c index 4c1993b7c..7398353b0 100644 --- a/shared-bindings/audiocore/WaveFile.c +++ b/shared-bindings/audiocore/WaveFile.c @@ -39,13 +39,15 @@ //| ======================================================== //| //| A .wav file prepped for audio playback. Only mono and stereo files are supported. Samples must -//| be 8 bit unsigned or 16 bit signed. +//| be 8 bit unsigned or 16 bit signed. If a buffer is provided, it will be used instead of allocating +//| an internal buffer. //| -//| .. class:: WaveFile(file) +//| .. class:: WaveFile(file[, buffer]) //| //| Load a .wav file for playback with `audioio.AudioOut` or `audiobusio.I2SOut`. //| //| :param typing.BinaryIO file: Already opened wave file +//| :param bytearray buffer: Optional pre-allocated buffer //| //| Playing a wave file from flash:: //| @@ -68,15 +70,23 @@ //| print("stopped") //| STATIC mp_obj_t audioio_wavefile_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) { - mp_arg_check_num(n_args, kw_args, 1, 1, false); + mp_arg_check_num(n_args, kw_args, 1, 2, false); audioio_wavefile_obj_t *self = m_new_obj(audioio_wavefile_obj_t); self->base.type = &audioio_wavefile_type; - if (MP_OBJ_IS_TYPE(args[0], &mp_type_fileio)) { - common_hal_audioio_wavefile_construct(self, MP_OBJ_TO_PTR(args[0])); - } else { + if (!MP_OBJ_IS_TYPE(args[0], &mp_type_fileio)) { mp_raise_TypeError(translate("file must be a file opened in byte mode")); } + uint8_t *buffer = NULL; + size_t buffer_size = 0; + if (n_args >= 2) { + mp_buffer_info_t bufinfo; + mp_get_buffer_raise(args[1], &bufinfo, MP_BUFFER_WRITE); + buffer = bufinfo.buf; + buffer_size = bufinfo.len; + } + common_hal_audioio_wavefile_construct(self, MP_OBJ_TO_PTR(args[0]), + buffer, buffer_size); return MP_OBJ_FROM_PTR(self); } |