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Add pulseaudio, parse command line args

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dec05eba
2020-04-02 23:43:56 +02:00
parent 2fcd3ee3e5
commit 32b66c95ff
6 changed files with 102 additions and 18 deletions
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58
src/sound.cpp
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@@ -3,6 +3,55 @@
#include <stdlib.h>
#include <stdio.h>
#ifdef PULSEAUDIO
#include <pulse/simple.h>
#include <pulse/error.h>
int sound_device_get_by_name(SoundDevice *device, const char *name, unsigned int num_channels, unsigned int period_frame_size) {
pa_sample_spec ss;
ss.format = PA_SAMPLE_S16LE;
ss.rate = 48000;
ss.channels = num_channels;
int error;
pa_simple *pa_handle = pa_simple_new(nullptr, "gpu-screen-recorder", PA_STREAM_RECORD, name, "record", &ss, nullptr, nullptr, &error);
if(!pa_handle) {
fprintf(stderr, "pa_simple_new() failed: %s\n", pa_strerror(error));
return -1;
}
int buffer_size = period_frame_size * 2 * num_channels; // 2 bytes/sample, @num_channels channels
void *buffer = malloc(buffer_size);
if(!buffer) {
fprintf(stderr, "failed to allocate buffer for audio\n");
pa_simple_free(pa_handle);
return -1;
}
fprintf(stderr, "Using pulseaudio\n");
device->handle = pa_handle;
device->buffer = buffer;
device->buffer_size = buffer_size;
device->frames = period_frame_size;
return 0;
}
void sound_device_close(SoundDevice *device) {
pa_simple_free((pa_simple*)device->handle);
free(device->buffer);
}
int sound_device_read_next_chunk(SoundDevice *device, void **buffer) {
int error;
if(pa_simple_read((pa_simple*)device->handle, device->buffer, device->buffer_size, &error) < 0) {
fprintf(stderr, "pa_simple_read() failed: %s\n", pa_strerror(error));
return -1;
}
*buffer = device->buffer;
return device->frames;
}
#else
#define ALSA_PCM_NEW_HW_PARAMS_API
#include <alsa/asoundlib.h>
@@ -52,7 +101,9 @@ int sound_device_get_by_name(SoundDevice *device, const char *name, unsigned int
return -1;
}
device->handle = (void*)handle;
fprintf(stderr, "Using alsa\n");
device->handle = handle;
device->buffer = buffer;
device->buffer_size = buffer_size;
device->frames = frames;
@@ -83,7 +134,4 @@ int sound_device_read_next_chunk(SoundDevice *device, void **buffer) {
*buffer = device->buffer;
return rc;
}
int sound_device_get_buffer_size(SoundDevice *device) {
return device->buffer_size;
}
#endif