130 lines
2.9 KiB
C
130 lines
2.9 KiB
C
/**
|
|
* FreeRDP: A Remote Desktop Protocol Implementation
|
|
* Audio Formats
|
|
*
|
|
* Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.com>
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <winpr/crt.h>
|
|
|
|
#include <freerdp/codec/audio.h>
|
|
|
|
UINT32 rdpsnd_compute_audio_time_length(AUDIO_FORMAT* format, int size)
|
|
{
|
|
UINT32 mstime;
|
|
UINT32 wSamples;
|
|
|
|
/**
|
|
* [MSDN-AUDIOFORMAT]:
|
|
* http://msdn.microsoft.com/en-us/library/ms713497.aspx
|
|
*/
|
|
|
|
wSamples = (size * 8) / format->wBitsPerSample;
|
|
mstime = (((wSamples * 1000) / format->nSamplesPerSec) / format->nChannels);
|
|
|
|
return mstime;
|
|
}
|
|
|
|
char* rdpsnd_get_audio_tag_string(UINT16 wFormatTag)
|
|
{
|
|
switch (wFormatTag)
|
|
{
|
|
case WAVE_FORMAT_PCM:
|
|
return "WAVE_FORMAT_PCM";
|
|
|
|
case WAVE_FORMAT_ADPCM:
|
|
return "WAVE_FORMAT_ADPCM";
|
|
|
|
case WAVE_FORMAT_ALAW:
|
|
return "WAVE_FORMAT_ALAW";
|
|
|
|
case WAVE_FORMAT_MULAW:
|
|
return "WAVE_FORMAT_MULAW";
|
|
|
|
case WAVE_FORMAT_DVI_ADPCM:
|
|
return "WAVE_FORMAT_DVI_ADPCM";
|
|
|
|
case WAVE_FORMAT_GSM610:
|
|
return "WAVE_FORMAT_GSM610";
|
|
|
|
case WAVE_FORMAT_MSG723:
|
|
return "WAVE_FORMAT_MSG723";
|
|
|
|
case WAVE_FORMAT_DSPGROUP_TRUESPEECH:
|
|
return "WAVE_FORMAT_DSPGROUP_TRUESPEECH ";
|
|
|
|
case WAVE_FORMAT_MPEGLAYER3:
|
|
return "WAVE_FORMAT_MPEGLAYER3";
|
|
|
|
case WAVE_FORMAT_WMAUDIO2:
|
|
return "WAVE_FORMAT_WMAUDIO2";
|
|
}
|
|
|
|
return "WAVE_FORMAT_UNKNOWN";
|
|
}
|
|
|
|
void rdpsnd_print_audio_format(AUDIO_FORMAT* format)
|
|
{
|
|
printf("%s:\t wFormatTag: 0x%04X nChannels: %d nSamplesPerSec: %d nAvgBytesPerSec: %d "
|
|
"nBlockAlign: %d wBitsPerSample: %d cbSize: %d\n",
|
|
rdpsnd_get_audio_tag_string(format->wFormatTag), format->wFormatTag,
|
|
format->nChannels, format->nSamplesPerSec, format->nAvgBytesPerSec,
|
|
format->nBlockAlign, format->wBitsPerSample, format->cbSize);
|
|
}
|
|
|
|
void rdpsnd_print_audio_formats(AUDIO_FORMAT* formats, UINT16 count)
|
|
{
|
|
int index;
|
|
AUDIO_FORMAT* format;
|
|
|
|
if (formats)
|
|
{
|
|
printf("AUDIO_FORMATS (%d) =\n{\n", count);
|
|
|
|
for (index = 0; index < (int) count; index++)
|
|
{
|
|
format = &formats[index];
|
|
|
|
printf("\t");
|
|
rdpsnd_print_audio_format(format);
|
|
}
|
|
|
|
printf("}\n");
|
|
}
|
|
}
|
|
|
|
void rdpsnd_free_audio_formats(AUDIO_FORMAT* formats, UINT16 count)
|
|
{
|
|
int index;
|
|
AUDIO_FORMAT* format;
|
|
|
|
if (formats)
|
|
{
|
|
for (index = 0; index < (int) count; index++)
|
|
{
|
|
format = &formats[index];
|
|
|
|
if (format->cbSize)
|
|
free(format->data);
|
|
}
|
|
|
|
free(formats);
|
|
}
|
|
}
|