diff options
Diffstat (limited to 'shared-module/audiocore/WaveFile.c')
| -rw-r--r-- | shared-module/audiocore/WaveFile.c | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/shared-module/audiocore/WaveFile.c b/shared-module/audiocore/WaveFile.c index 810d9c33b..df5d4b61d 100644 --- a/shared-module/audiocore/WaveFile.c +++ b/shared-module/audiocore/WaveFile.c @@ -46,7 +46,9 @@ struct wave_format_chunk { }; void common_hal_audioio_wavefile_construct(audioio_wavefile_obj_t* self, - pyb_file_obj_t* file) { + pyb_file_obj_t* file, + uint8_t *buffer, + size_t buffer_size) { // Load the wave self->file = file; uint8_t chunk_header[16]; @@ -84,7 +86,6 @@ void common_hal_audioio_wavefile_construct(audioio_wavefile_obj_t* self, } // Get the sample_rate self->sample_rate = format.sample_rate; - self->len = 256; self->channel_count = format.num_channels; self->bits_per_sample = format.bits_per_sample; @@ -111,21 +112,31 @@ void common_hal_audioio_wavefile_construct(audioio_wavefile_obj_t* self, // Try to allocate two buffers, one will be loaded from file and the other // DMAed to DAC. - self->buffer = m_malloc(self->len, false); - if (self->buffer == NULL) { - common_hal_audioio_wavefile_deinit(self); - mp_raise_msg(&mp_type_MemoryError, translate("Couldn't allocate first buffer")); - } + if (buffer_size) { + self->len = buffer_size / 2; + self->buffer = buffer; + self->second_buffer = buffer + self->len; + } else { + self->len = 256; + self->buffer = m_malloc(self->len, false); + if (self->buffer == NULL) { + common_hal_audioio_wavefile_deinit(self); + mp_raise_msg(&mp_type_MemoryError, + translate("Couldn't allocate first buffer")); + } - self->second_buffer = m_malloc(self->len, false); - if (self->second_buffer == NULL) { - common_hal_audioio_wavefile_deinit(self); - mp_raise_msg(&mp_type_MemoryError, translate("Couldn't allocate second buffer")); + self->second_buffer = m_malloc(self->len, false); + if (self->second_buffer == NULL) { + common_hal_audioio_wavefile_deinit(self); + mp_raise_msg(&mp_type_MemoryError, + translate("Couldn't allocate second buffer")); + } } } void common_hal_audioio_wavefile_deinit(audioio_wavefile_obj_t* self) { self->buffer = NULL; + self->second_buffer = NULL; } bool common_hal_audioio_wavefile_deinited(audioio_wavefile_obj_t* self) { |