diff options
Diffstat (limited to 'libs/ardour/ardour/audio_buffer.h')
| -rw-r--r-- | libs/ardour/ardour/audio_buffer.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/libs/ardour/ardour/audio_buffer.h b/libs/ardour/ardour/audio_buffer.h index 5c04a7f43a..42aba607f9 100644 --- a/libs/ardour/ardour/audio_buffer.h +++ b/libs/ardour/ardour/audio_buffer.h @@ -46,6 +46,28 @@ public: } /** Read @a len frames @a src starting at @a src_offset into self starting at @ dst_offset*/ + void read_from (const Sample* src, framecnt_t len, framecnt_t dst_offset = 0, framecnt_t src_offset = 0) { + assert(src != 0); + assert(_capacity > 0); + assert(len <= _capacity); + memcpy(_data + dst_offset, src + src_offset, sizeof(Sample) * len); + _silent = false; + _written = true; + } + + void read_from_with_gain (const Sample* src, framecnt_t len, gain_t gain, framecnt_t dst_offset = 0, framecnt_t src_offset = 0) { + assert(src != 0); + assert(_capacity > 0); + assert(len <= _capacity); + src += src_offset; + for (framecnt_t n = 0; n < len; ++n) { + _data[dst_offset+n] = src[n] * gain; + } + _silent = false; + _written = true; + } + + /** Read @a len frames @a src starting at @a src_offset into self starting at @ dst_offset*/ void read_from (const Buffer& src, framecnt_t len, framecnt_t dst_offset = 0, framecnt_t src_offset = 0) { assert(&src != this); assert(_capacity > 0); @@ -82,6 +104,20 @@ public: _written = true; } + /** Acumulate (add) @a len frames @a src starting at @a src_offset into self starting at @a dst_offset */ + void accumulate_from (const Sample* src, framecnt_t len, framecnt_t dst_offset = 0, framecnt_t src_offset = 0) { + assert(_capacity > 0); + assert(len <= _capacity); + + Sample* const dst_raw = _data + dst_offset; + const Sample* const src_raw = src + src_offset; + + mix_buffers_no_gain(dst_raw, src_raw, len); + + _silent = false; + _written = true; + } + /** Acumulate (add) @a len frames @a src starting at @a src_offset into self starting at @dst_offset * scaling by @a gain_coeff */ void accumulate_with_gain_from (const AudioBuffer& src, framecnt_t len, gain_t gain_coeff, framecnt_t dst_offset = 0, framecnt_t src_offset = 0) { @@ -171,6 +207,8 @@ public: return _data + offset; } + bool check_silence (pframes_t, pframes_t&) const; + void prepare () { _written = false; _silent = false; } bool written() const { return _written; } void set_written(bool w) { _written = w; } |