diff options
Diffstat (limited to 'channels/tsmf/client/oss/tsmf_oss.c')
| -rw-r--r-- | channels/tsmf/client/oss/tsmf_oss.c | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/channels/tsmf/client/oss/tsmf_oss.c b/channels/tsmf/client/oss/tsmf_oss.c new file mode 100644 index 0000000..666b419 --- /dev/null +++ b/channels/tsmf/client/oss/tsmf_oss.c @@ -0,0 +1,248 @@ +/** + * 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. + */ + +#include <freerdp/config.h> + +#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 +{ + 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) \ + do \ + { \ + if ((_error) != 0) \ + { \ + char ebuffer[256] = { 0 }; \ + WLog_ERR(TAG, "%s: %i - %s", (_text), (_error), \ + winpr_strerror((_error), ebuffer, sizeof(ebuffer))); \ + } \ + } while (0) + +static BOOL tsmf_oss_open(ITSMFAudioDevice* audio, const char* device) +{ + int tmp = 0; + 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. */ + 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 + const int rc = ioctl(oss->pcm_handle, SNDCTL_DSP_GETFMTS, &tmp); + if (rc == -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 = 0; + 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 = 0; + UINT32 offset = 0; + 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); +} + +FREERDP_ENTRY_POINT(ITSMFAudioDevice* oss_freerdp_tsmf_client_audio_subsystem_entry(void)) +{ + TSMFOssAudioDevice* oss = calloc(1, sizeof(TSMFOssAudioDevice)); + if (!oss) + return NULL; + + 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 &oss->iface; +} |