How to change the volume in PulseAudio (libpulse)

Question

I am writing a program to play audio using 'libpulse' on linux. I have successfully played the audio, but need to know how to change the volume. I am able to start the stream using

v = PA_VOLUME_NORM;
pa_cvolume_set(&m_lcvolume, 1, v);
pa_stream_connect_playback(s, NULL, &attr, PA_STREAM_NOFLAGS, &m_lcvolume, NULL)

with pacific volume but need to know how to change the volume after connecting to stream. Dont want to call pa_stream_connect_playback function again and again to change the volume.

Answer 1

Finally I am able to change the volume of each channel by calling pa_context_set_sink_input_volume. The pa_cvolume parameter can be used to specify the volume and channel in pa_context_set_sink_input_volume.