253 lines
5.9 KiB
C
253 lines
5.9 KiB
C
|
/**
|
||
|
* FreeRDP: A Remote Desktop Protocol Implementation
|
||
|
* Video Redirection Virtual Channel - OSS Audio Device
|
||
|
*
|
||
|
* Copyright (c) 2015 Rozhuk Ivan <rozhuk.im@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 <stdio.h>
|
||
|
#include <stdlib.h>
|
||
|
#include <string.h>
|
||
|
#include <unistd.h>
|
||
|
|
||
|
#include <winpr/crt.h>
|
||
|
|
||
|
#include <err.h>
|
||
|
#include <errno.h>
|
||
|
#include <fcntl.h>
|
||
|
#include <libgen.h>
|
||
|
#include <limits.h>
|
||
|
#include <unistd.h>
|
||
|
#if defined(__OpenBSD__)
|
||
|
#include <soundcard.h>
|
||
|
#else
|
||
|
#include <sys/soundcard.h>
|
||
|
#endif
|
||
|
#include <sys/ioctl.h>
|
||
|
|
||
|
#include <freerdp/types.h>
|
||
|
#include <freerdp/codec/dsp.h>
|
||
|
|
||
|
#include "tsmf_audio.h"
|
||
|
|
||
|
typedef struct _TSMFOSSAudioDevice
|
||
|
{
|
||
|
ITSMFAudioDevice iface;
|
||
|
|
||
|
char dev_name[PATH_MAX];
|
||
|
int pcm_handle;
|
||
|
|
||
|
UINT32 sample_rate;
|
||
|
UINT32 channels;
|
||
|
UINT32 bits_per_sample;
|
||
|
|
||
|
UINT32 data_size_last;
|
||
|
} TSMFOssAudioDevice;
|
||
|
|
||
|
#define OSS_LOG_ERR(_text, _error) \
|
||
|
if (_error != 0) \
|
||
|
WLog_ERR(TAG, "%s: %i - %s", _text, _error, strerror(_error));
|
||
|
|
||
|
static BOOL tsmf_oss_open(ITSMFAudioDevice* audio, const char* device)
|
||
|
{
|
||
|
int tmp;
|
||
|
TSMFOssAudioDevice* oss = (TSMFOssAudioDevice*)audio;
|
||
|
|
||
|
if (oss == NULL || oss->pcm_handle != -1)
|
||
|
return FALSE;
|
||
|
|
||
|
if (device == NULL) /* Default device. */
|
||
|
{
|
||
|
strncpy(oss->dev_name, "/dev/dsp", sizeof(oss->dev_name));
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
strncpy(oss->dev_name, device, sizeof(oss->dev_name) - 1);
|
||
|
}
|
||
|
|
||
|
if ((oss->pcm_handle = open(oss->dev_name, O_WRONLY)) < 0)
|
||
|
{
|
||
|
OSS_LOG_ERR("sound dev open failed", errno);
|
||
|
oss->pcm_handle = -1;
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
#if 0 /* FreeBSD OSS implementation at this moment (2015.03) does not set PCM_CAP_OUTPUT flag. */
|
||
|
tmp = 0;
|
||
|
|
||
|
if (ioctl(oss->pcm_handle, SNDCTL_DSP_GETCAPS, &mask) == -1)
|
||
|
{
|
||
|
OSS_LOG_ERR("SNDCTL_DSP_GETCAPS failed, try ignory", errno);
|
||
|
}
|
||
|
else if ((mask & PCM_CAP_OUTPUT) == 0)
|
||
|
{
|
||
|
OSS_LOG_ERR("Device does not supports playback", EOPNOTSUPP);
|
||
|
close(oss->pcm_handle);
|
||
|
oss->pcm_handle = -1;
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
#endif
|
||
|
tmp = 0;
|
||
|
|
||
|
if (ioctl(oss->pcm_handle, SNDCTL_DSP_GETFMTS, &tmp) == -1)
|
||
|
{
|
||
|
OSS_LOG_ERR("SNDCTL_DSP_GETFMTS failed", errno);
|
||
|
close(oss->pcm_handle);
|
||
|
oss->pcm_handle = -1;
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
if ((AFMT_S16_LE & tmp) == 0)
|
||
|
{
|
||
|
OSS_LOG_ERR("SNDCTL_DSP_GETFMTS - AFMT_S16_LE", EOPNOTSUPP);
|
||
|
close(oss->pcm_handle);
|
||
|
oss->pcm_handle = -1;
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
WLog_INFO(TAG, "open: %s", oss->dev_name);
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
static BOOL tsmf_oss_set_format(ITSMFAudioDevice* audio, UINT32 sample_rate, UINT32 channels,
|
||
|
UINT32 bits_per_sample)
|
||
|
{
|
||
|
int tmp;
|
||
|
TSMFOssAudioDevice* oss = (TSMFOssAudioDevice*)audio;
|
||
|
|
||
|
if (oss == NULL || oss->pcm_handle == -1)
|
||
|
return FALSE;
|
||
|
|
||
|
oss->sample_rate = sample_rate;
|
||
|
oss->channels = channels;
|
||
|
oss->bits_per_sample = bits_per_sample;
|
||
|
tmp = AFMT_S16_LE;
|
||
|
|
||
|
if (ioctl(oss->pcm_handle, SNDCTL_DSP_SETFMT, &tmp) == -1)
|
||
|
OSS_LOG_ERR("SNDCTL_DSP_SETFMT failed", errno);
|
||
|
|
||
|
tmp = channels;
|
||
|
|
||
|
if (ioctl(oss->pcm_handle, SNDCTL_DSP_CHANNELS, &tmp) == -1)
|
||
|
OSS_LOG_ERR("SNDCTL_DSP_CHANNELS failed", errno);
|
||
|
|
||
|
tmp = sample_rate;
|
||
|
|
||
|
if (ioctl(oss->pcm_handle, SNDCTL_DSP_SPEED, &tmp) == -1)
|
||
|
OSS_LOG_ERR("SNDCTL_DSP_SPEED failed", errno);
|
||
|
|
||
|
tmp = ((bits_per_sample / 8) * channels * sample_rate);
|
||
|
|
||
|
if (ioctl(oss->pcm_handle, SNDCTL_DSP_SETFRAGMENT, &tmp) == -1)
|
||
|
OSS_LOG_ERR("SNDCTL_DSP_SETFRAGMENT failed", errno);
|
||
|
|
||
|
DEBUG_TSMF("sample_rate %" PRIu32 " channels %" PRIu32 " bits_per_sample %" PRIu32 "",
|
||
|
sample_rate, channels, bits_per_sample);
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
static BOOL tsmf_oss_play(ITSMFAudioDevice* audio, const BYTE* data, UINT32 data_size)
|
||
|
{
|
||
|
int status;
|
||
|
UINT32 offset;
|
||
|
TSMFOssAudioDevice* oss = (TSMFOssAudioDevice*)audio;
|
||
|
DEBUG_TSMF("tsmf_oss_play: data_size %" PRIu32 "", data_size);
|
||
|
|
||
|
if (oss == NULL || oss->pcm_handle == -1)
|
||
|
return FALSE;
|
||
|
|
||
|
if (data == NULL || data_size == 0)
|
||
|
return TRUE;
|
||
|
|
||
|
offset = 0;
|
||
|
oss->data_size_last = data_size;
|
||
|
|
||
|
while (offset < data_size)
|
||
|
{
|
||
|
status = write(oss->pcm_handle, &data[offset], (data_size - offset));
|
||
|
|
||
|
if (status < 0)
|
||
|
{
|
||
|
OSS_LOG_ERR("write fail", errno);
|
||
|
return FALSE;
|
||
|
}
|
||
|
|
||
|
offset += status;
|
||
|
}
|
||
|
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
static UINT64 tsmf_oss_get_latency(ITSMFAudioDevice* audio)
|
||
|
{
|
||
|
UINT64 latency = 0;
|
||
|
TSMFOssAudioDevice* oss = (TSMFOssAudioDevice*)audio;
|
||
|
|
||
|
if (oss == NULL)
|
||
|
return 0;
|
||
|
|
||
|
// latency = ((oss->data_size_last / (oss->bits_per_sample / 8)) * oss->sample_rate);
|
||
|
// WLog_INFO(TAG, "latency: %zu", latency);
|
||
|
return latency;
|
||
|
}
|
||
|
|
||
|
static BOOL tsmf_oss_flush(ITSMFAudioDevice* audio)
|
||
|
{
|
||
|
return TRUE;
|
||
|
}
|
||
|
|
||
|
static void tsmf_oss_free(ITSMFAudioDevice* audio)
|
||
|
{
|
||
|
TSMFOssAudioDevice* oss = (TSMFOssAudioDevice*)audio;
|
||
|
|
||
|
if (oss == NULL)
|
||
|
return;
|
||
|
|
||
|
if (oss->pcm_handle != -1)
|
||
|
{
|
||
|
WLog_INFO(TAG, "close: %s", oss->dev_name);
|
||
|
close(oss->pcm_handle);
|
||
|
}
|
||
|
|
||
|
free(oss);
|
||
|
}
|
||
|
|
||
|
#ifdef BUILTIN_CHANNELS
|
||
|
#define freerdp_tsmf_client_audio_subsystem_entry oss_freerdp_tsmf_client_audio_subsystem_entry
|
||
|
#else
|
||
|
#define freerdp_tsmf_client_audio_subsystem_entry \
|
||
|
FREERDP_API freerdp_tsmf_client_audio_subsystem_entry
|
||
|
#endif
|
||
|
|
||
|
ITSMFAudioDevice* freerdp_tsmf_client_audio_subsystem_entry(void)
|
||
|
{
|
||
|
TSMFOssAudioDevice* oss;
|
||
|
oss = (TSMFOssAudioDevice*)malloc(sizeof(TSMFOssAudioDevice));
|
||
|
ZeroMemory(oss, sizeof(TSMFOssAudioDevice));
|
||
|
oss->iface.Open = tsmf_oss_open;
|
||
|
oss->iface.SetFormat = tsmf_oss_set_format;
|
||
|
oss->iface.Play = tsmf_oss_play;
|
||
|
oss->iface.GetLatency = tsmf_oss_get_latency;
|
||
|
oss->iface.Flush = tsmf_oss_flush;
|
||
|
oss->iface.Free = tsmf_oss_free;
|
||
|
oss->pcm_handle = -1;
|
||
|
return (ITSMFAudioDevice*)oss;
|
||
|
}
|