#define __ardour_audio_buffer_h__
#include <cstring>
+
#include "ardour/buffer.h"
+#include "ardour/runtime_functions.h"
namespace ARDOUR {
/** Buffer containing audio data. */
-class AudioBuffer : public Buffer
+class LIBARDOUR_API AudioBuffer : public Buffer
{
public:
AudioBuffer(size_t capacity);
_written = true;
}
+ /** 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(src.type() == DataType::AUDIO);
assert(len <= _capacity);
assert( src_offset <= ((framecnt_t) src.capacity()-len));
- memcpy(_data + dst_offset, ((AudioBuffer&)src).data() + src_offset, sizeof(Sample) * len);
+ memcpy(_data + dst_offset, ((const AudioBuffer&)src).data() + src_offset, sizeof(Sample) * len);
if (dst_offset == 0 && src_offset == 0 && len == _capacity) {
_silent = src.silent();
} else {
_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) {
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; }
private:
bool _owns_data;