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vdr/dvbdevice.c

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/*
* dvbdevice.c: The DVB device interface
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: dvbdevice.c 1.5 2002/08/15 11:13:46 kls Exp $
*/
#include "dvbdevice.h"
#include <errno.h>
extern "C" {
#ifdef boolean
#define HAVE_BOOLEAN
#endif
#include <jpeglib.h>
#undef boolean
}
#include <limits.h>
#include <linux/videodev.h>
#ifdef NEWSTRUCT
#include <linux/dvb/audio.h>
#include <linux/dvb/frontend.h>
#include <linux/dvb/video.h>
#else
#include <ost/audio.h>
#include <ost/sec.h>
#include <ost/video.h>
#endif
#include <poll.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include "dvbosd.h"
#include "player.h"
#include "receiver.h"
#include "status.h"
#include "transfer.h"
#define MAXDVBDEVICES 4
#define DEV_VIDEO "/dev/video"
#ifdef NEWSTRUCT
#define DEV_DVB_ADAPTER "/dev/dvb/adapter"
#define DEV_DVB_OSD "osd"
#define DEV_DVB_FRONTEND "frontend"
#define DEV_DVB_DVR "dvr"
#define DEV_DVB_DEMUX "demux"
#define DEV_DVB_VIDEO "video"
#define DEV_DVB_AUDIO "audio"
#else
#define DEV_DVB_OSD "/dev/ost/osd"
#define DEV_DVB_FRONTEND "/dev/ost/frontend"
#define DEV_DVB_SEC "/dev/ost/sec"
#define DEV_DVB_DVR "/dev/ost/dvr"
#define DEV_DVB_DEMUX "/dev/ost/demux"
#define DEV_DVB_VIDEO "/dev/ost/video"
#define DEV_DVB_AUDIO "/dev/ost/audio"
#endif
static const char *DvbName(const char *Name, int n)
{
static char buffer[PATH_MAX];
#ifdef NEWSTRUCT
snprintf(buffer, sizeof(buffer), "%s%d/%s%d", DEV_DVB_ADAPTER, n, Name, 0);
#else
snprintf(buffer, sizeof(buffer), "%s%d", Name, n);
#endif
return buffer;
}
static int DvbOpen(const char *Name, int n, int Mode, bool ReportError = false)
{
const char *FileName = DvbName(Name, n);
int fd = open(FileName, Mode);
if (fd < 0 && ReportError)
LOG_ERROR_STR(FileName);
return fd;
}
cDvbDevice::cDvbDevice(int n)
{
frontendType = FrontendType(-1); // don't know how else to initialize this - there is no FE_UNKNOWN
siProcessor = NULL;
playMode = pmNone;
// Devices that are present on all card types:
fd_frontend = DvbOpen(DEV_DVB_FRONTEND, n, O_RDWR | O_NONBLOCK);
// Devices that are only present on cards with decoders:
fd_osd = DvbOpen(DEV_DVB_OSD, n, O_RDWR);
fd_video = DvbOpen(DEV_DVB_VIDEO, n, O_RDWR | O_NONBLOCK);
fd_audio = DvbOpen(DEV_DVB_AUDIO, n, O_RDWR | O_NONBLOCK);
#ifndef NEWSTRUCT
// Devices that are only present on DVB-S cards:
fd_sec = DvbOpen(DEV_DVB_SEC, n, O_RDWR);
#endif
// The DVR device (will be opened and closed as needed):
fd_dvr = -1;
// Video format:
SetVideoFormat(Setup.VideoFormat ? VIDEO_FORMAT_16_9 : VIDEO_FORMAT_4_3);
// We only check the devices that must be present - the others will be checked before accessing them://XXX
if (fd_frontend >= 0) {
#ifdef NEWSTRUCT
dvb_frontend_info feinfo;
#else
FrontendInfo feinfo;
#endif
siProcessor = new cSIProcessor(DvbName(DEV_DVB_DEMUX, n));
if (ioctl(fd_frontend, FE_GET_INFO, &feinfo) >= 0)
frontendType = feinfo.type;
else
LOG_ERROR;
}
else
esyslog("ERROR: can't open DVB device %d", n);
frequency = 0;
}
cDvbDevice::~cDvbDevice()
{
delete siProcessor;
// We're not explicitly closing any device files here, since this sometimes
// caused segfaults. Besides, the program is about to terminate anyway...
}
bool cDvbDevice::Probe(const char *FileName)
{
if (access(FileName, F_OK) == 0) {
dsyslog("probing %s", FileName);
int f = open(FileName, O_RDONLY);
if (f >= 0) {
close(f);
return true;
}
else if (errno != ENODEV && errno != EINVAL)
LOG_ERROR_STR(FileName);
}
else if (errno != ENOENT)
LOG_ERROR_STR(FileName);
return false;
}
bool cDvbDevice::Initialize(void)
{
int found = 0;
int i;
for (i = 0; i < MAXDVBDEVICES; i++) {
if (UseDevice(NextCardIndex())) {
if (Probe(DvbName(DEV_DVB_FRONTEND, i))) {
new cDvbDevice(i);
found++;
}
else
break;
}
else
NextCardIndex(1); // skips this one
}
NextCardIndex(MAXDVBDEVICES - i); // skips the rest
if (found > 0)
isyslog("found %d video device%s", found, found > 1 ? "s" : "");
else
isyslog("no DVB device found");
return found > 0;
}
void cDvbDevice::MakePrimaryDevice(bool On)
{
cDvbOsd::SetDvbDevice(On ? this : NULL);
}
bool cDvbDevice::CanBeReUsed(int Frequency, int Vpid)
{
return Receiving() // to be reused the DVB device must already be receiving...
&& frequency == Frequency // ...and tuned to the requested frequency...
&& (!HasDecoder() // ...and either be a "budget card" which can receive multiple channels...
|| pidHandles[ptVideo].pid == Vpid // ...or be a "full featured card" that's already tuned to the requested video PID
);
}
bool cDvbDevice::HasDecoder(void) const
{
return fd_video >= 0 && fd_audio >= 0;
}
bool cDvbDevice::GrabImage(const char *FileName, bool Jpeg, int Quality, int SizeX, int SizeY)
{
int videoDev = DvbOpen(DEV_VIDEO, CardIndex(), O_RDWR, true);
if (videoDev >= 0) {
int result = 0;
struct video_mbuf mbuf;
result |= ioctl(videoDev, VIDIOCGMBUF, &mbuf);
if (result == 0) {
int msize = mbuf.size;
unsigned char *mem = (unsigned char *)mmap(0, msize, PROT_READ | PROT_WRITE, MAP_SHARED, videoDev, 0);
if (mem && mem != (unsigned char *)-1) {
// set up the size and RGB
struct video_capability vc;
result |= ioctl(videoDev, VIDIOCGCAP, &vc);
struct video_mmap vm;
vm.frame = 0;
if ((SizeX > 0) && (SizeX <= vc.maxwidth) &&
(SizeY > 0) && (SizeY <= vc.maxheight)) {
vm.width = SizeX;
vm.height = SizeY;
}
else {
vm.width = vc.maxwidth;
vm.height = vc.maxheight;
}
vm.format = VIDEO_PALETTE_RGB24;
result |= ioctl(videoDev, VIDIOCMCAPTURE, &vm);
result |= ioctl(videoDev, VIDIOCSYNC, &vm.frame);
// make RGB out of BGR:
int memsize = vm.width * vm.height;
unsigned char *mem1 = mem;
for (int i = 0; i < memsize; i++) {
unsigned char tmp = mem1[2];
mem1[2] = mem1[0];
mem1[0] = tmp;
mem1 += 3;
}
if (Quality < 0)
Quality = 255; //XXX is this 'best'???
isyslog("grabbing to %s (%s %d %d %d)", FileName, Jpeg ? "JPEG" : "PNM", Quality, vm.width, vm.height);
FILE *f = fopen(FileName, "wb");
if (f) {
if (Jpeg) {
// write JPEG file:
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_compress(&cinfo);
jpeg_stdio_dest(&cinfo, f);
cinfo.image_width = vm.width;
cinfo.image_height = vm.height;
cinfo.input_components = 3;
cinfo.in_color_space = JCS_RGB;
jpeg_set_defaults(&cinfo);
jpeg_set_quality(&cinfo, Quality, true);
jpeg_start_compress(&cinfo, true);
int rs = vm.width * 3;
JSAMPROW rp[vm.height];
for (int k = 0; k < vm.height; k++)
rp[k] = &mem[rs * k];
jpeg_write_scanlines(&cinfo, rp, vm.height);
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
}
else {
// write PNM file:
if (fprintf(f, "P6\n%d\n%d\n255\n", vm.width, vm.height) < 0 ||
fwrite(mem, vm.width * vm.height * 3, 1, f) < 0) {
LOG_ERROR_STR(FileName);
result |= 1;
}
}
fclose(f);
}
else {
LOG_ERROR_STR(FileName);
result |= 1;
}
munmap(mem, msize);
}
else
result |= 1;
}
close(videoDev);
return result == 0;
}
return false;
}
void cDvbDevice::SetVideoFormat(bool VideoFormat16_9)
{
if (HasDecoder())
CHECK(ioctl(fd_video, VIDEO_SET_FORMAT, VideoFormat16_9 ? VIDEO_FORMAT_16_9 : VIDEO_FORMAT_4_3));
}
// ptVideo ptAudio ptTeletext ptDolby ptOther
dmxPesType_t PesTypes[] = { DMX_PES_VIDEO, DMX_PES_AUDIO, DMX_PES_TELETEXT, DMX_PES_OTHER, DMX_PES_OTHER };
bool cDvbDevice::SetPid(cPidHandle *Handle, int Type, bool On)
{
if (Handle->pid) {
if (On) {
if (Handle->handle < 0) {
Handle->handle = DvbOpen(DEV_DVB_DEMUX, CardIndex(), O_RDWR | O_NONBLOCK, true);
if (Handle->handle < 0)
return false;
}
}
else {
CHECK(ioctl(Handle->handle, DMX_STOP));
if (Handle->used == 0) {
close(Handle->handle);
Handle->handle = -1;
return true;
}
}
if (Handle->pid != 0x1FFF) {
dmxPesFilterParams pesFilterParams;
memset(&pesFilterParams, 0, sizeof(pesFilterParams));
pesFilterParams.pid = Handle->pid;
pesFilterParams.input = DMX_IN_FRONTEND;
pesFilterParams.output = (Type <= ptTeletext && Handle->used <= 1) ? DMX_OUT_DECODER : DMX_OUT_TS_TAP;
pesFilterParams.pesType = PesTypes[Type < ptOther ? Type : ptOther];
pesFilterParams.flags = DMX_IMMEDIATE_START;
//XXX+ pesFilterParams.flags = DMX_CHECK_CRC;//XXX
if (ioctl(Handle->handle, DMX_SET_PES_FILTER, &pesFilterParams) < 0) {
LOG_ERROR;
return false;
}
//XXX+ CHECK(ioctl(Handle->handle, DMX_SET_BUFFER_SIZE, KILOBYTE(32)));//XXX
//XXX+ CHECK(ioctl(Handle->handle, DMX_START));//XXX
}
}
return true;
}
bool cDvbDevice::SetChannelDevice(const cChannel *Channel)
{
// Avoid noise while switching:
if (HasDecoder()) {
CHECK(ioctl(fd_audio, AUDIO_SET_MUTE, true));
CHECK(ioctl(fd_video, VIDEO_SET_BLANK, true));
CHECK(ioctl(fd_audio, AUDIO_CLEAR_BUFFER));
CHECK(ioctl(fd_video, VIDEO_CLEAR_BUFFER));
}
// Stop setting system time:
if (siProcessor)
siProcessor->SetCurrentTransponder(0);
// Turn off current PIDs:
if (HasDecoder()) {
DelPid(pidHandles[ptVideo].pid);
DelPid(pidHandles[ptAudio].pid);
DelPid(pidHandles[ptTeletext].pid);
DelPid(pidHandles[ptDolby].pid);
}
#ifdef NEWSTRUCT
dvb_frontend_parameters Frontend;
#else
FrontendParameters Frontend;
#endif
memset(&Frontend, 0, sizeof(Frontend));
switch (frontendType) {
case FE_QPSK: { // DVB-S
// Frequency offsets:
unsigned int freq = Channel->frequency;
int tone = SEC_TONE_OFF;
if (freq < (unsigned int)Setup.LnbSLOF) {
freq -= Setup.LnbFrequLo;
tone = SEC_TONE_OFF;
}
else {
freq -= Setup.LnbFrequHi;
tone = SEC_TONE_ON;
}
#ifdef NEWSTRUCT
Frontend.frequency = freq * 1000UL;
Frontend.inversion = INVERSION_AUTO;
Frontend.u.qpsk.symbol_rate = Channel->srate * 1000UL;
Frontend.u.qpsk.fec_inner = FEC_AUTO;
#else
Frontend.Frequency = freq * 1000UL;
Frontend.Inversion = INVERSION_AUTO;
Frontend.u.qpsk.SymbolRate = Channel->srate * 1000UL;
Frontend.u.qpsk.FEC_inner = FEC_AUTO;
#endif
int volt = (Channel->polarization == 'v' || Channel->polarization == 'V') ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18;
// DiSEqC:
#ifdef NEWSTRUCT
struct dvb_diseqc_master_cmd cmd = { {0xE0, 0x10, 0x38, 0xF0, 0x00, 0x00}, 4};
cmd.msg[3] = 0xF0 | (((Channel->diseqc * 4) & 0x0F) | (tone == SEC_TONE_ON ? 1 : 0) | (volt == SEC_VOLTAGE_18 ? 2 : 0));
if (Setup.DiSEqC)
CHECK(ioctl(fd_frontend, FE_SET_TONE, SEC_TONE_OFF));
CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, volt));
if (Setup.DiSEqC) {
usleep(15 * 1000);
CHECK(ioctl(fd_frontend, FE_DISEQC_SEND_MASTER_CMD, &cmd));
usleep(15 * 1000);
CHECK(ioctl(fd_frontend, FE_DISEQC_SEND_BURST, (Channel->diseqc / 4) % 2 ? SEC_MINI_B : SEC_MINI_A));
usleep(15 * 1000);
}
CHECK(ioctl(fd_frontend, FE_SET_TONE, tone));
#else
secCommand scmd;
scmd.type = 0;
scmd.u.diseqc.addr = 0x10;
scmd.u.diseqc.cmd = 0x38;
scmd.u.diseqc.numParams = 1;
scmd.u.diseqc.params[0] = 0xF0 | ((Channel->diseqc * 4) & 0x0F) | (tone == SEC_TONE_ON ? 1 : 0) | (volt == SEC_VOLTAGE_18 ? 2 : 0);
secCmdSequence scmds;
scmds.voltage = volt;
scmds.miniCommand = SEC_MINI_NONE;
scmds.continuousTone = tone;
scmds.numCommands = Setup.DiSEqC ? 1 : 0;
scmds.commands = &scmd;
CHECK(ioctl(fd_sec, SEC_SEND_SEQUENCE, &scmds));
#endif
}
break;
case FE_QAM: { // DVB-C
// Frequency and symbol rate:
#ifdef NEWSTRUCT
Frontend.frequency = Channel->frequency * 1000000UL;
Frontend.inversion = INVERSION_AUTO;
Frontend.u.qam.symbol_rate = Channel->srate * 1000UL;
Frontend.u.qam.fec_inner = FEC_AUTO;
Frontend.u.qam.modulation = QAM_64;
#else
Frontend.Frequency = Channel->frequency * 1000000UL;
Frontend.Inversion = INVERSION_AUTO;
Frontend.u.qam.SymbolRate = Channel->srate * 1000UL;
Frontend.u.qam.FEC_inner = FEC_AUTO;
Frontend.u.qam.QAM = QAM_64;
#endif
}
break;
case FE_OFDM: { // DVB-T
// Frequency and OFDM paramaters:
#ifdef NEWSTRUCT
Frontend.frequency = Channel->frequency * 1000UL;
Frontend.inversion = INVERSION_AUTO;
Frontend.u.ofdm.bandwidth=BANDWIDTH_8_MHZ;
Frontend.u.ofdm.code_rate_HP = FEC_2_3;
Frontend.u.ofdm.code_rate_LP = FEC_1_2;
Frontend.u.ofdm.constellation = QAM_64;
Frontend.u.ofdm.transmission_mode = TRANSMISSION_MODE_2K;
Frontend.u.ofdm.guard_interval = GUARD_INTERVAL_1_32;
Frontend.u.ofdm.hierarchy_information = HIERARCHY_NONE;
#else
Frontend.Frequency = Channel->frequency * 1000UL;
Frontend.Inversion = INVERSION_AUTO;
Frontend.u.ofdm.bandWidth=BANDWIDTH_8_MHZ;
Frontend.u.ofdm.HP_CodeRate=FEC_2_3;
Frontend.u.ofdm.LP_CodeRate=FEC_1_2;
Frontend.u.ofdm.Constellation=QAM_64;
Frontend.u.ofdm.TransmissionMode=TRANSMISSION_MODE_2K;
Frontend.u.ofdm.guardInterval=GUARD_INTERVAL_1_32;
Frontend.u.ofdm.HierarchyInformation=HIERARCHY_NONE;
#endif
}
break;
default:
esyslog("ERROR: attempt to set channel with unknown DVB frontend type");
return false;
}
#ifdef NEWSTRUCT
// Discard stale events:
for (;;) {
dvb_frontend_event event;
if (ioctl(fd_frontend, FE_GET_EVENT, &event) < 0)
break;
}
#endif
// Tuning:
CHECK(ioctl(fd_frontend, FE_SET_FRONTEND, &Frontend));
// Wait for channel lock:
#ifdef NEWSTRUCT
FrontendStatus status = FrontendStatus(0);
for (int i = 0; i < 100; i++) {
CHECK(ioctl(fd_frontend, FE_READ_STATUS, &status));
if (status & FE_HAS_LOCK)
break;
usleep(10 * 1000);
}
if (!(status & FE_HAS_LOCK)) {
esyslog("ERROR: channel %d not locked on DVB card %d!", Channel->number, CardIndex() + 1);
if (IsPrimaryDevice())
cThread::RaisePanic();
return false;
}
#else
if (cFile::FileReady(fd_frontend, 5000)) {
FrontendEvent event;
if (ioctl(fd_frontend, FE_GET_EVENT, &event) >= 0) {
if (event.type != FE_COMPLETION_EV) {
esyslog("ERROR: channel %d not sync'ed on DVB card %d!", Channel->number, CardIndex() + 1);
if (IsPrimaryDevice())
cThread::RaisePanic();
return false;
}
}
else
esyslog("ERROR in frontend get event (channel %d, card %d): %m", Channel->number, CardIndex() + 1);
}
else
esyslog("ERROR: timeout while tuning on DVB card %d", CardIndex() + 1);
#endif
frequency = Channel->frequency;
// PID settings:
if (HasDecoder()) {
if (!(AddPid(Channel->vpid, ptVideo) && AddPid(Channel->apid1, ptAudio))) {//XXX+ dolby dpid1!!! (if audio plugins are attached)
esyslog("ERROR: failed to set PIDs for channel %d", Channel->number);
return false;
}
if (IsPrimaryDevice())
AddPid(Channel->tpid, ptTeletext);
CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, true));
}
if (HasDecoder()) {
CHECK(ioctl(fd_audio, AUDIO_SET_MUTE, false));
CHECK(ioctl(fd_video, VIDEO_SET_BLANK, false));
}
// Start setting system time:
if (siProcessor)
siProcessor->SetCurrentTransponder(Channel->frequency);
return true;
}
void cDvbDevice::SetVolumeDevice(int Volume)
{
if (HasDecoder()) {
audioMixer_t am;
am.volume_left = am.volume_right = Volume;
CHECK(ioctl(fd_audio, AUDIO_SET_MIXER, &am));
}
}
bool cDvbDevice::SetPlayMode(ePlayMode PlayMode)
{
if (PlayMode != pmExtern_THIS_SHOULD_BE_AVOIDED && fd_video < 0 && fd_audio < 0) {
// reopen the devices
fd_video = DvbOpen(DEV_DVB_VIDEO, CardIndex(), O_RDWR | O_NONBLOCK);
fd_audio = DvbOpen(DEV_DVB_AUDIO, CardIndex(), O_RDWR | O_NONBLOCK);
SetVideoFormat(Setup.VideoFormat);
}
switch (PlayMode) {
case pmNone:
if (playMode == pmAudioOnly) {
// special "handling" to return from PCM replay
CHECK(ioctl(fd_video, VIDEO_SET_BLANK, true));
CHECK(ioctl(fd_video, VIDEO_SELECT_SOURCE, VIDEO_SOURCE_MEMORY));
CHECK(ioctl(fd_video, VIDEO_PLAY));
}
CHECK(ioctl(fd_video, VIDEO_STOP, true));
CHECK(ioctl(fd_audio, AUDIO_STOP, true));
CHECK(ioctl(fd_video, VIDEO_CLEAR_BUFFER));
CHECK(ioctl(fd_audio, AUDIO_CLEAR_BUFFER));
CHECK(ioctl(fd_video, VIDEO_SELECT_SOURCE, VIDEO_SOURCE_DEMUX));
CHECK(ioctl(fd_audio, AUDIO_SELECT_SOURCE, AUDIO_SOURCE_DEMUX));
CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, true));
CHECK(ioctl(fd_audio, AUDIO_SET_MUTE, false));
if (siProcessor)
siProcessor->SetStatus(true);
break;
case pmAudioVideo:
if (siProcessor)
siProcessor->SetStatus(false);
CHECK(ioctl(fd_video, VIDEO_SET_BLANK, true));
CHECK(ioctl(fd_audio, AUDIO_SELECT_SOURCE, AUDIO_SOURCE_MEMORY));
CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, true));
CHECK(ioctl(fd_audio, AUDIO_PLAY));
CHECK(ioctl(fd_video, VIDEO_SELECT_SOURCE, VIDEO_SOURCE_MEMORY));
CHECK(ioctl(fd_video, VIDEO_PLAY));
break;
case pmAudioOnly:
if (siProcessor)
siProcessor->SetStatus(false);
CHECK(ioctl(fd_video, VIDEO_SET_BLANK, true));
CHECK(ioctl(fd_audio, AUDIO_STOP, true));
CHECK(ioctl(fd_audio, AUDIO_CLEAR_BUFFER));
CHECK(ioctl(fd_audio, AUDIO_SELECT_SOURCE, AUDIO_SOURCE_MEMORY));
CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, false));
CHECK(ioctl(fd_audio, AUDIO_PLAY));
CHECK(ioctl(fd_video, VIDEO_SET_BLANK, false));
break;
case pmExtern_THIS_SHOULD_BE_AVOIDED:
if (siProcessor)
siProcessor->SetStatus(false);
close(fd_video);
close(fd_audio);
fd_video = fd_audio = -1;
break;
}
playMode = PlayMode;
return true;
}
void cDvbDevice::TrickSpeed(int Speed)
{
if (fd_video >= 0)
CHECK(ioctl(fd_video, VIDEO_SLOWMOTION, Speed));
}
void cDvbDevice::Clear(void)
{
if (fd_video >= 0)
CHECK(ioctl(fd_video, VIDEO_CLEAR_BUFFER));
if (fd_audio >= 0)
CHECK(ioctl(fd_audio, AUDIO_CLEAR_BUFFER));
}
void cDvbDevice::Play(void)
{
if (fd_audio >= 0)
CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, true));
if (fd_video >= 0)
CHECK(ioctl(fd_video, VIDEO_CONTINUE));
}
void cDvbDevice::Freeze(void)
{
if (fd_audio >= 0)
CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, false));
if (fd_video >= 0)
CHECK(ioctl(fd_video, VIDEO_FREEZE));
}
void cDvbDevice::Mute(void)
{
if (fd_audio >= 0) {
CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, false));
CHECK(ioctl(fd_audio, AUDIO_SET_MUTE, true));
}
}
void cDvbDevice::StillPicture(const uchar *Data, int Length)
{
Mute();
/* Using the VIDEO_STILLPICTURE ioctl call would be the
correct way to display a still frame, but unfortunately this
doesn't work with frames from VDR. So let's do pretty much the
same here as in DVB/driver/dvb.c's play_iframe() - I have absolutely
no idea why it works this way, but doesn't work with VIDEO_STILLPICTURE.
If anybody ever finds out what could be changed so that VIDEO_STILLPICTURE
could be used, please let me know!
kls 2002-03-23
*/
//#define VIDEO_STILLPICTURE_WORKS_WITH_VDR_FRAMES
#ifdef VIDEO_STILLPICTURE_WORKS_WITH_VDR_FRAMES
videoDisplayStillPicture sp = { (char *)Data, Length };
CHECK(ioctl(fd_video, VIDEO_STILLPICTURE, &sp));
#else
#define MIN_IFRAME 400000
for (int i = MIN_IFRAME / Length + 1; i > 0; i--) {
safe_write(fd_video, Data, Length);
usleep(1); // allows the buffer to be displayed in case the progress display is active
}
#endif
}
bool cDvbDevice::NeedsData(int Wait)
{
return cFile::FileReadyForWriting(fd_video, Wait);
}
int cDvbDevice::PlayVideo(const uchar *Data, int Length)
{
int fd = playMode == pmAudioOnly ? fd_audio : fd_video;
if (fd >= 0)
return write(fd, Data, Length);
return -1;
}
int cDvbDevice::PlayAudio(const uchar *Data, int Length)
{
//XXX+
return -1;
}
bool cDvbDevice::OpenDvr(void)
{
CloseDvr();
fd_dvr = DvbOpen(DEV_DVB_DVR, CardIndex(), O_RDONLY | O_NONBLOCK, true);
return fd_dvr >= 0;
}
void cDvbDevice::CloseDvr(void)
{
if (fd_dvr >= 0) {
close(fd_dvr);
fd_dvr = -1;
}
}
int cDvbDevice::GetTSPacket(uchar *Data)
{
if (fd_dvr >= 0) {
pollfd pfd;
pfd.fd = fd_dvr;
pfd.events = POLLIN;
poll(&pfd, 1, 100);
if (pfd.revents & POLLIN != 0) {
int r = read(fd_dvr, Data, TS_SIZE);
if (r >= 0)
return r;
else if (FATALERRNO) {
if (errno == EBUFFEROVERFLOW) // this error code is not defined in the library
esyslog("ERROR: DVB driver buffer overflow on device %d", CardIndex() + 1);
else {
LOG_ERROR;
return -1;
}
}
}
return 0;
}
else
return -1;
}
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