diff options
Diffstat (limited to 'src/devices/sound/c140.cpp')
-rw-r--r-- | src/devices/sound/c140.cpp | 40 |
1 files changed, 22 insertions, 18 deletions
diff --git a/src/devices/sound/c140.cpp b/src/devices/sound/c140.cpp index 7f3780c8ed3..0edb1920a8c 100644 --- a/src/devices/sound/c140.cpp +++ b/src/devices/sound/c140.cpp @@ -77,9 +77,9 @@ DEFINE_DEVICE_TYPE(C219, c219_device, "c219", "Namco C219") // LIVE DEVICE //************************************************************************** -static inline int limit(s32 in) +static inline stream_buffer::sample_t limit(stream_buffer::sample_t in) { - return std::max(-0x7fff, std::min(0x8000, in)); + return std::max(-1.0f, std::min(1.0f, in)); } @@ -220,7 +220,7 @@ void c140_device::rom_bank_updated() // sound_stream_update - handle a stream update //------------------------------------------------- -void c140_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) +void c140_device::sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) { s32 dt; @@ -228,6 +228,7 @@ void c140_device::sound_stream_update(sound_stream &stream, stream_sample_t **in s16 *lmix, *rmix; + int samples = outputs[0].samples(); if (samples > m_sample_rate) samples = m_sample_rate; /* zap the contents of the mixer buffer */ @@ -323,21 +324,22 @@ void c140_device::sound_stream_update(sound_stream &stream, stream_sample_t **in lmix = m_mixer_buffer_left.get(); rmix = m_mixer_buffer_right.get(); { - stream_sample_t *dest1 = outputs[0]; - stream_sample_t *dest2 = outputs[1]; + auto &dest1 = outputs[0]; + auto &dest2 = outputs[1]; + constexpr stream_buffer::sample_t sample_scale = 8.0 / 32768.0; for (int i = 0; i < samples; i++) { - s32 val; + stream_buffer::sample_t val; - val = 8 * (*lmix++); - *dest1++ = limit(val); - val = 8 * (*rmix++); - *dest2++ = limit(val); + val = stream_buffer::sample_t(*lmix++) * sample_scale; + dest1.put(i, limit(val)); + val = stream_buffer::sample_t(*rmix++) * sample_scale; + dest2.put(i, limit(val)); } } } -void c219_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) +void c219_device::sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) { s32 dt; @@ -345,6 +347,7 @@ void c219_device::sound_stream_update(sound_stream &stream, stream_sample_t **in s16 *lmix, *rmix; + int samples = outputs[0].samples(); if (samples > m_sample_rate) samples = m_sample_rate; /* zap the contents of the mixer buffer */ @@ -460,16 +463,17 @@ void c219_device::sound_stream_update(sound_stream &stream, stream_sample_t **in lmix = m_mixer_buffer_left.get(); rmix = m_mixer_buffer_right.get(); { - stream_sample_t *dest1 = outputs[0]; - stream_sample_t *dest2 = outputs[1]; + auto &dest1 = outputs[0]; + auto &dest2 = outputs[1]; + constexpr stream_buffer::sample_t sample_scale = 8.0 / 32768.0; for (int i = 0; i < samples; i++) { - s32 val; + stream_buffer::sample_t val; - val = 8 * (*lmix++); - *dest1++ = limit(val); - val = 8 * (*rmix++); - *dest2++ = limit(val); + val = stream_buffer::sample_t(*lmix++) * sample_scale; + dest1.put(i, limit(val)); + val = stream_buffer::sample_t(*rmix++) * sample_scale; + dest2.put(i, limit(val)); } } } |