private void ConvertAudioSample(ref WaveDataType input, IntPtr sample)
{
int ret;
IntPtr swr = AV.swr_alloc_set_opts(IntPtr.Zero,
AV.av_get_default_channel_layout(codecCtx.channels),
AV.AVSampleFormat.AV_SAMPLE_FMT_S16,
codecCtx.sample_rate,
AV.av_get_default_channel_layout(codecCtx.channels),
codecCtx.sample_fmt,
codecCtx.sample_rate,
0,
IntPtr.Zero);
ret = AV.swr_init(swr);
int needed_buf_size = AV.av_samples_get_buffer_size(IntPtr.Zero,
codecCtx.channels,
input.nb_samples,
AV.AVSampleFormat.AV_SAMPLE_FMT_S16, 0);
IntPtr pOutput = Marshal.AllocCoTaskMem(needed_buf_size);
IntPtr ppOutput = Marshal.AllocCoTaskMem(Marshal.SizeOf(pOutput));
Marshal.WriteIntPtr(ppOutput, pOutput);
int len = AV.swr_convert(swr, ppOutput, input.nb_samples, sample, input.nb_samples);
int output_len = len * 2 * AV.av_get_bytes_per_sample(AV.AVSampleFormat.AV_SAMPLE_FMT_S16);
input.managedData = new byte[output_len];
Marshal.Copy(pOutput, input.managedData, 0, output_len);
Marshal.FreeCoTaskMem(pOutput);
Marshal.FreeCoTaskMem(ppOutput);
IntPtr ppSwr = Marshal.AllocCoTaskMem(Marshal.SizeOf(swr));
Marshal.WriteIntPtr(ppSwr, swr);
AV.swr_free(ppSwr);
Marshal.FreeCoTaskMem(ppSwr);
input.bit_per_sample = AV.av_get_bits_per_sample_fmt(AV.AVSampleFormat.AV_SAMPLE_FMT_S16);
input.channel = codecCtx.channels;
input.fmt = AV.AVSampleFormat.AV_SAMPLE_FMT_S16;
input.size = needed_buf_size;
}
public void PutSample(WaveDataType type)
{
int ret;
int size = type.size;
int rate = type.sample_rate == 0 ? 44100 : type.sample_rate;
int bit = type.bit_per_sample == 0 ? 16 : type.bit_per_sample;
int channel = type.channel == 0 ? 2 : type.channel;
if (waveOut == IntPtr.Zero)
{
WaveLib.WaveFormat fmt = new WaveLib.WaveFormat(rate, bit, channel);
ret = WaveNative.waveOutOpen(out waveOut, -1, fmt, null, 0, WaveNative.CALLBACK_NULL);
if (ret != WaveNative.MMSYSERR_NOERROR)
throw new Exception("can not open wave device");
}
queue.Enqueue(type);
}
public void PutSample(WaveDataType type)
{
int ret;
int size = type.size;
int rate = type.sample_rate == 0 ? 44100 : type.sample_rate;
int bit = type.bit_per_sample == 0 ? 16 : type.bit_per_sample;
int channel = type.channel == 0 ? 2 : type.channel;
if (pcm == IntPtr.Zero)
{
int dir;
string device = "default";
ret = Asound.snd_pcm_open(out pcm, device,
Asound.snd_pcm_stream_t.SND_PCM_STREAM_PLAYBACK,
0);
if (ret < 0)
{
string err = Asound._snd_strerror(ret);
Console.WriteLine(err);
pcm = IntPtr.Zero;
return;
}
else
{
Console.WriteLine("open audio device ok, pcm is {0}", pcm);
}
IntPtr param = Asound.snd_pcm_hw_params_alloca();
ret = Asound.snd_pcm_hw_params_any(pcm, param);
ret = Asound.snd_pcm_hw_params_set_access(pcm, param, Asound.snd_pcm_access_t.SND_PCM_ACCESS_RW_INTERLEAVED);
ret = Asound.snd_pcm_hw_params_set_format(pcm, param, Asound.snd_pcm_format_t.SND_PCM_FORMAT_S16_LE);
ret = Asound.snd_pcm_hw_params_set_channels(pcm, param, channel);
int val = rate;
ret = Asound.snd_pcm_hw_params_set_rate_near(pcm, param, ref val, out dir);
ulong frames = (ulong)type.nb_samples;
ret = Asound.snd_pcm_hw_params_set_period_size_near(pcm, param, ref frames, out dir);
ret = Asound.snd_pcm_hw_params(pcm, param);
Asound.snd_pcm_params_free(param);
}
queue.Enqueue(type);
}
public void PutSample(WaveDataType type)
{
int ret;
int size = type.size;
int rate = type.sample_rate == 0 ? 44100 : type.sample_rate;
int bit = type.bit_per_sample == 0 ? 16 : type.bit_per_sample;
int channel = type.channel == 0 ? 2 : type.channel;
if (pcm == IntPtr.Zero)
{
int dir;
string device = "default";
ret = Asound.snd_pcm_open (out pcm, device,
Asound.snd_pcm_stream_t.SND_PCM_STREAM_PLAYBACK,
0);
if (ret < 0) {
string err = Asound._snd_strerror(ret);
Console.WriteLine(err);
pcm = IntPtr.Zero;
return;
}
else
{
Console.WriteLine("open audio device ok, pcm is {0}", pcm);
}
IntPtr param = Asound.snd_pcm_hw_params_alloca ();
ret = Asound.snd_pcm_hw_params_any (pcm, param);
ret = Asound.snd_pcm_hw_params_set_access (pcm, param, Asound.snd_pcm_access_t.SND_PCM_ACCESS_RW_INTERLEAVED);
ret = Asound.snd_pcm_hw_params_set_format (pcm, param, Asound.snd_pcm_format_t.SND_PCM_FORMAT_S16_LE);
ret = Asound.snd_pcm_hw_params_set_channels (pcm, param, channel);
int val = rate;
ret = Asound.snd_pcm_hw_params_set_rate_near (pcm, param, ref val, out dir);
ulong frames = (ulong)type.nb_samples;
ret = Asound.snd_pcm_hw_params_set_period_size_near (pcm, param, ref frames, out dir);
ret = Asound.snd_pcm_hw_params (pcm, param);
Asound.snd_pcm_params_free(param);
}
queue.Enqueue(type);
}
public void PutSample(WaveDataType type)
{
int ret;
int size = type.size;
int rate = type.sample_rate == 0 ? 44100 : type.sample_rate;
int bit = type.bit_per_sample == 0 ? 16 : type.bit_per_sample;
int channel = type.channel == 0 ? 2 : type.channel;
if (waveOut == IntPtr.Zero)
{
WaveLib.WaveFormat fmt = new WaveLib.WaveFormat(rate, bit, channel);
ret = WaveNative.waveOutOpen(out waveOut, -1, fmt, null, 0, WaveNative.CALLBACK_NULL);
if (ret != WaveNative.MMSYSERR_NOERROR)
{
throw new Exception("can not open wave device");
}
}
queue.Enqueue(type);
}
private void ConvertAudioSample(ref WaveDataType input, IntPtr sample)
{
int ret;
IntPtr swr = AV.swr_alloc_set_opts(IntPtr.Zero,
AV.av_get_default_channel_layout(codecCtx.channels),
AV.AVSampleFormat.AV_SAMPLE_FMT_S16,
codecCtx.sample_rate,
AV.av_get_default_channel_layout(codecCtx.channels),
codecCtx.sample_fmt,
codecCtx.sample_rate,
0,
IntPtr.Zero);
ret = AV.swr_init(swr);
int needed_buf_size = AV.av_samples_get_buffer_size(IntPtr.Zero,
codecCtx.channels,
input.nb_samples,
AV.AVSampleFormat.AV_SAMPLE_FMT_S16, 0);
IntPtr pOutput = Marshal.AllocCoTaskMem(needed_buf_size);
IntPtr ppOutput = Marshal.AllocCoTaskMem(Marshal.SizeOf(pOutput));
Marshal.WriteIntPtr(ppOutput, pOutput);
int len = AV.swr_convert(swr, ppOutput, input.nb_samples, sample, input.nb_samples);
int output_len = len * 2 * AV.av_get_bytes_per_sample(AV.AVSampleFormat.AV_SAMPLE_FMT_S16);
input.managedData = new byte[output_len];
Marshal.Copy(pOutput, input.managedData, 0, output_len);
Marshal.FreeCoTaskMem(pOutput);
Marshal.FreeCoTaskMem(ppOutput);
IntPtr ppSwr = Marshal.AllocCoTaskMem(Marshal.SizeOf(swr));
Marshal.WriteIntPtr(ppSwr, swr);
AV.swr_free(ppSwr);
Marshal.FreeCoTaskMem(ppSwr);
input.bit_per_sample = AV.av_get_bits_per_sample_fmt(AV.AVSampleFormat.AV_SAMPLE_FMT_S16);
input.channel = codecCtx.channels;
input.fmt = AV.AVSampleFormat.AV_SAMPLE_FMT_S16;
input.size = needed_buf_size;
}
