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audio/utils: Add remux_and_mix_channel()

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Martin Piatka
2024-07-15 14:53:02 +02:00
parent 7f25bb6036
commit bcba7c0056
2 changed files with 23 additions and 0 deletions
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22
src/audio/utils.cpp
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@@ -420,6 +420,28 @@ void mux_and_mix_channel(char *out, const char *in, int bps, int in_len, int out
}
}
void remux_and_mix_channel(char *out, const char *in, int bps, int frames, int in_stream_channels, int out_stream_channels, int in_channel, int out_channel, double scale)
{
int i;
assert (bps <= 4);
out += out_channel * bps;
in += in_channel * bps;
for(i = 0; i < frames; i++) {
int32_t in_value = format_from_in_bps(in, bps);
int32_t out_value = format_from_in_bps(out, bps);
int32_t new_value = (double)in_value * scale + out_value;
format_to_out_bps(out, bps, new_value);
in += in_stream_channels * bps;
out += out_stream_channels * bps;
}
}
template<int BPS>
static double get_avg_volume_helper(const char *data, int sample_count, int stream_channels, int pos_in_stream)
{

1
src/audio/utils.h
View File

@@ -115,6 +115,7 @@ void interleaved2noninterleaved_float(char **out, const char *in, int in_bps,
* @return avareage volume
*/
void mux_and_mix_channel(char *out, const char *in, int bps, int in_len, int out_stream_channels, int chan_pos_stream, double scale);
void remux_and_mix_channel(char *out, const char *in, int bps, int frames, int in_stream_channels, int out_stream_channels, int in_channel, int out_channel, double scale);
double get_avg_volume(char *data, int bps, int in_len, int stream_channels, int chan_pos_stream);
/**