mirror of
https://github.com/tuxbox-neutrino/libstb-hal.git
synced 2025-08-26 23:13:16 +02:00
310 lines
7.2 KiB
C++
310 lines
7.2 KiB
C++
#include <cstdio>
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#include <cstdlib>
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#include <sys/fcntl.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <hardware/tddevices.h>
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#define AUDIO_DEVICE "/dev/" DEVICE_NAME_AUDIO
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#include "audio_td.h"
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#include "lt_debug.h"
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#define lt_debug(args...) _lt_debug(TRIPLE_DEBUG_AUDIO, this, args)
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#define lt_info(args...) _lt_info(TRIPLE_DEBUG_AUDIO, this, args)
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#include <linux/soundcard.h>
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cAudio * audioDecoder = NULL;
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cAudio::cAudio(void *, void *, void *)
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{
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fd = -1;
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clipfd = -1;
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openDevice();
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Muted = false;
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}
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cAudio::~cAudio(void)
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{
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closeDevice();
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}
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void cAudio::openDevice(void)
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{
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if (fd < 0)
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{
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if ((fd = open(AUDIO_DEVICE, O_RDWR)) < 0)
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lt_info("openDevice: open failed (%m)\n");
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}
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else
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lt_info("openDevice: already open (fd = %d)\n", fd);
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}
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void cAudio::closeDevice(void)
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{
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if (fd >= 0)
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close(fd);
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fd = -1;
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if (clipfd >= 0)
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close(clipfd);
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clipfd = -1;
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}
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int cAudio::do_mute(bool enable, bool remember)
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{
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lt_debug("%s(%d, %d)\n", __FUNCTION__, enable, remember);
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int ret;
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if (remember)
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Muted = enable;
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ret = ioctl(fd, MPEG_AUD_SET_MUTE, enable);
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if (ret < 0)
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lt_info("%s(%d) failed (%m)\n", __FUNCTION__, (int)enable);
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return ret;
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}
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int map_volume(const int volume)
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{
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unsigned char vol = volume;
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if (vol > 100)
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vol = 100;
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// vol = (invlog63[volume] + 1) / 2;
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vol = 31 - vol * 31 / 100;
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return vol;
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}
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int cAudio::setVolume(unsigned int left, unsigned int right)
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{
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// int avsfd;
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int ret;
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int vl = map_volume(left);
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int vr = map_volume(right);
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int v = map_volume((left + right) / 2);
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// if (settings.volume_type == CControld::TYPE_OST || forcetype == (int)CControld::TYPE_OST)
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{
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AUDVOL vol;
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vol.frontleft = vl;
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vol.frontright = vr;
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vol.rearleft = vl;
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vol.rearright = vr;
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vol.center = v;
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vol.lfe = v;
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ret = ioctl(fd, MPEG_AUD_SET_VOL, &vol);
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if (ret < 0)
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lt_info("setVolume MPEG_AUD_SET_VOL failed (%m)\n");
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return ret;
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}
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#if 0
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else if (settings.volume_type == CControld::TYPE_AVS || forcetype == (int)CControld::TYPE_AVS)
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{
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if ((avsfd = open(AVS_DEVICE, O_RDWR)) < 0)
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perror("[controld] " AVS_DEVICE);
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else {
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if (ioctl(avsfd, IOC_AVS_SET_VOLUME, v))
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perror("[controld] IOC_AVS_SET_VOLUME");
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close(avsfd);
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return 0;
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}
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}
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fprintf(stderr, "CAudio::setVolume: invalid settings.volume_type = %d\n", settings.volume_type);
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return -1;
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#endif
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}
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int cAudio::Start(void)
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{
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int ret;
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ret = ioctl(fd, MPEG_AUD_PLAY);
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/* this seems to be not strictly necessary since neutrino
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re-mutes all the time, but is certainly more correct */
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ioctl(fd, MPEG_AUD_SET_MUTE, Muted);
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return ret;
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}
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int cAudio::Stop(void)
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{
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return ioctl(fd, MPEG_AUD_STOP);
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}
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bool cAudio::Pause(bool /*Pcm*/)
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{
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return true;
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};
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void cAudio::SetSyncMode(AVSYNC_TYPE Mode)
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{
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lt_debug("%s %d\n", __FUNCTION__, Mode);
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switch (Mode)
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{
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case 0:
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ioctl(fd, MPEG_AUD_SYNC_OFF);
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break;
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default:
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ioctl(fd, MPEG_AUD_SYNC_ON);
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break;
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}
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};
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void cAudio::SetStreamType(AUDIO_FORMAT type)
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{
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int bypass_disable;
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lt_debug("%s %d\n", __FUNCTION__, type);
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StreamType = type;
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if (StreamType != AUDIO_FMT_DOLBY_DIGITAL && StreamType != AUDIO_FMT_MPEG && StreamType != AUDIO_FMT_MPG1)
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lt_info("%s unhandled AUDIO_FORMAT %d\n", __FUNCTION__, StreamType);
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bypass_disable = (StreamType != AUDIO_FMT_DOLBY_DIGITAL);
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setBypassMode(bypass_disable);
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if (StreamType == AUDIO_FMT_MPEG)
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ioctl(fd, MPEG_AUD_SET_STREAM_TYPE, AUD_STREAM_TYPE_PES);
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if (StreamType == AUDIO_FMT_MPG1)
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ioctl(fd, MPEG_AUD_SET_STREAM_TYPE, AUD_STREAM_TYPE_MPEG1);
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};
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int cAudio::setChannel(int channel)
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{
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lt_debug("%s %d\n", __FUNCTION__, channel);
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return 0;
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};
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int cAudio::PrepareClipPlay(int ch, int srate, int bits, int little_endian)
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{
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int fmt;
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lt_debug("%s ch %d srate %d bits %d le %d\n", __FUNCTION__, ch, srate, bits, little_endian);
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if (clipfd >= 0) {
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lt_info("%s: clipfd already opened (%d)\n", __FUNCTION__, clipfd);
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return -1;
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}
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/* the dsp driver seems to work only on the second open(). really. */
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clipfd = open("/dev/sound/dsp", O_WRONLY);
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close(clipfd);
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clipfd = open("/dev/sound/dsp", O_WRONLY);
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if (clipfd < 0) {
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lt_info("%s open /dev/sound/dsp: %m\n", __FUNCTION__);
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return -1;
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}
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/* no idea if we ever get little_endian == 0 */
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if (little_endian)
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fmt = AFMT_S16_BE;
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else
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fmt = AFMT_S16_LE;
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if (ioctl(clipfd, SNDCTL_DSP_SETFMT, &fmt))
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perror("SNDCTL_DSP_SETFMT");
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if (ioctl(clipfd, SNDCTL_DSP_CHANNELS, &ch))
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perror("SNDCTL_DSP_CHANNELS");
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if (ioctl(clipfd, SNDCTL_DSP_SPEED, &srate))
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perror("SNDCTL_DSP_SPEED");
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if (ioctl(clipfd, SNDCTL_DSP_RESET))
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perror("SNDCTL_DSP_RESET");
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return 0;
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};
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int cAudio::WriteClip(unsigned char *buffer, int size)
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{
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int ret;
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// lt_debug("cAudio::%s\n", __FUNCTION__);
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if (clipfd <= 0) {
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lt_info("%s: clipfd not yet opened\n", __FUNCTION__);
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return -1;
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}
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ret = write(clipfd, buffer, size);
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if (ret < 0)
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lt_info("%s: write error (%m)\n", __FUNCTION__);
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return ret;
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};
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int cAudio::StopClip()
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{
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lt_debug("%s\n", __FUNCTION__);
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if (clipfd <= 0) {
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lt_info("%s: clipfd not yet opened\n", __FUNCTION__);
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return -1;
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}
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close(clipfd);
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clipfd = -1;
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return 0;
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};
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void cAudio::getAudioInfo(int &type, int &layer, int &freq, int &bitrate, int &mode)
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{
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lt_debug("%s\n", __FUNCTION__);
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unsigned int atype;
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static const int freq_mpg[] = {44100, 48000, 32000, 0};
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static const int freq_ac3[] = {48000, 44100, 32000, 0};
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scratchl2 i;
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if (ioctl(fd, MPEG_AUD_GET_DECTYP, &atype) < 0)
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perror("cAudio::getAudioInfo MPEG_AUD_GET_DECTYP");
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if (ioctl(fd, MPEG_AUD_GET_STATUS, &i) < 0)
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perror("cAudio::getAudioInfo MPEG_AUD_GET_STATUS");
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type = atype;
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#if 0
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/* this does not work, some of the values are negative?? */
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AMPEGStatus A;
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memcpy(&A, &i.word00, sizeof(i.word00));
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layer = A.audio_mpeg_layer;
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mode = A.audio_mpeg_mode;
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bitrate = A.audio_mpeg_bitrate;
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switch(A.audio_mpeg_frequency)
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#endif
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/* layer and bitrate are not used anyway... */
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layer = 0; //(i.word00 >> 17) & 3;
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bitrate = 0; //(i.word00 >> 12) & 3;
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switch (type)
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{
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case 0: /* MPEG */
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mode = (i.word00 >> 6) & 3;
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freq = freq_mpg[(i.word00 >> 10) & 3];
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break;
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case 1: /* AC3 */
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mode = (i.word00 >> 28) & 7;
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freq = freq_ac3[(i.word00 >> 16) & 3];
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break;
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default:
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mode = 0;
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freq = 0;
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}
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//fprintf(stderr, "type: %d layer: %d freq: %d bitrate: %d mode: %d\n", type, layer, freq, bitrate, mode);
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};
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void cAudio::SetSRS(int /*iq_enable*/, int /*nmgr_enable*/, int /*iq_mode*/, int /*iq_level*/)
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{
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lt_debug("%s\n", __FUNCTION__);
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};
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void cAudio::SetSpdifDD(bool enable)
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{
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lt_debug("%s %d\n", __FUNCTION__, enable);
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};
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void cAudio::ScheduleMute(bool On)
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{
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lt_debug("%s %d\n", __FUNCTION__, On);
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};
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void cAudio::EnableAnalogOut(bool enable)
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{
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lt_debug("%s %d\n", __FUNCTION__, enable);
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};
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void cAudio::setBypassMode(bool disable)
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{
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lt_debug("%s %d\n", __FUNCTION__, disable);
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/* disable = true: audio is MPEG, disable = false: audio is AC3 */
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if (disable)
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{
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ioctl(fd, MPEG_AUD_SET_MODE, AUD_MODE_MPEG);
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return;
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}
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/* dvb2001 does always set AUD_MODE_DTS before setting AUD_MODE_AC3,
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this might be some workaround, so we do the same... */
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ioctl(fd, MPEG_AUD_SET_MODE, AUD_MODE_DTS);
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ioctl(fd, MPEG_AUD_SET_MODE, AUD_MODE_AC3);
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return;
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/* all those ioctl aways return "invalid argument", but they seem to
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work anyway, so there's no use in checking the return value */
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}
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