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-rw-r--r--dvbapi.c245
1 files changed, 160 insertions, 85 deletions
diff --git a/dvbapi.c b/dvbapi.c
index 991fb193..69ee8ec2 100644
--- a/dvbapi.c
+++ b/dvbapi.c
@@ -7,7 +7,7 @@
* DVD support initially written by Andreas Schultz <aschultz@warp10.net>
* based on dvdplayer-0.5 by Matjaz Thaler <matjaz.thaler@guest.arnes.si>
*
- * $Id: dvbapi.c 1.112 2001/09/08 11:36:12 kls Exp $
+ * $Id: dvbapi.c 1.113 2001/09/09 12:52:41 kls Exp $
*/
//#define DVDDEBUG 1
@@ -630,17 +630,25 @@ int ReadFrame(int f, uchar *b, int Length, int Max)
// --- cPlayBuffer ---------------------------------------------------------
+#define MAX_VIDEO_SLOWMOTION 63 // max. arg to pass to VIDEO_SLOWMOTION // TODO is this value correct?
+
class cPlayBuffer : public cRingBufferFrame {
protected:
+ enum ePlayModes { pmPlay, pmPause, pmSlow, pmFast, pmStill };
+ enum ePlayDirs { pdForward, pdBackward };
+ static int Speeds[];
cDvbApi *dvbApi;
int videoDev, audioDev;
FILE *dolbyDev;
int blockInput, blockOutput;
- bool still, paused, fastForward, fastRewind;
+ ePlayModes playMode;
+ ePlayDirs playDir;
+ int trickSpeed;
int readIndex, writeIndex;
bool canDoTrickMode;
bool canToggleAudioTrack;
uchar audioTrack;
+ void TrickSpeed(int Increment);
virtual void Empty(bool Block = false);
virtual void StripAudioPackets(uchar *b, int Length, uchar Except = 0x00) {}
virtual void Output(void);
@@ -659,6 +667,11 @@ public:
virtual void ToggleAudioTrack(void);
};
+#define NORMAL_SPEED 4 // the index of the '1' entry in the following array
+#define MAX_SPEEDS 3 // the offset of the maximum speed from normal speed in either direction
+#define SPEED_MULT 12 // the speed multiplier
+int cPlayBuffer::Speeds[] = { 0, -2, -4, -8, 1, 2, 4, 12, 0 };
+
cPlayBuffer::cPlayBuffer(cDvbApi *DvbApi, int VideoDev, int AudioDev)
:cRingBufferFrame(VIDEOBUFSIZE)
{
@@ -667,7 +680,9 @@ cPlayBuffer::cPlayBuffer(cDvbApi *DvbApi, int VideoDev, int AudioDev)
audioDev = AudioDev;
dolbyDev = NULL;
blockInput = blockOutput = false;
- still = paused = fastForward = fastRewind = false;
+ playMode = pmPlay;
+ playDir = pdForward;
+ trickSpeed = NORMAL_SPEED;
readIndex = writeIndex = -1;
canDoTrickMode = false;
canToggleAudioTrack = false;
@@ -697,25 +712,23 @@ void cPlayBuffer::Output(void)
}
const cFrame *frame = Get();
if (frame) {
- StripAudioPackets((uchar *)frame->Data(), frame->Count(), (fastForward || fastRewind) ? 0x00 : audioTrack);//XXX
- for (int i = 0; i < ((paused && fastRewind) ? 24 : 1); i++) { // show every I_FRAME 24 times in slow rewind mode to achieve roughly the same speed as in slow forward mode
- const uchar *p = frame->Data();
- int r = frame->Count();
- while (r > 0 && Busy() && !blockOutput) {
- cFile::FileReadyForWriting(videoDev, 100);
- int w = write(videoDev, p, r);
- if (w > 0) {
- p += w;
- r -= w;
- }
- else if (w < 0 && FATALERRNO) {
- LOG_ERROR;
- Stop();
- return;
- }
- }
- writeIndex = frame->Index();
- }
+ StripAudioPackets((uchar *)frame->Data(), frame->Count(), (playMode == pmFast || playMode == pmSlow) ? 0x00 : audioTrack);//XXX
+ const uchar *p = frame->Data();
+ int r = frame->Count();
+ while (r > 0 && Busy() && !blockOutput) {
+ cFile::FileReadyForWriting(videoDev, 100);
+ int w = write(videoDev, p, r);
+ if (w > 0) {
+ p += w;
+ r -= w;
+ }
+ else if (w < 0 && FATALERRNO) {
+ LOG_ERROR;
+ Stop();
+ return;
+ }
+ }
+ writeIndex = frame->Index();
Drop(frame);
}
}
@@ -723,6 +736,26 @@ void cPlayBuffer::Output(void)
dsyslog(LOG_INFO, "output thread ended (pid=%d)", getpid());
}
+void cPlayBuffer::TrickSpeed(int Increment)
+{
+ int nts = trickSpeed + Increment;
+ if (Speeds[nts] == 1) {
+ trickSpeed = nts;
+ if (playMode == pmFast)
+ Play();
+ else
+ Pause();
+ }
+ else if (Speeds[nts]) {
+ trickSpeed = nts;
+ int Mult = (playMode == pmSlow && playDir == pdForward) ? 1 : SPEED_MULT;
+ int sp = (Speeds[nts] > 0) ? Mult / Speeds[nts] : -Speeds[nts] * Mult;
+ if (sp > MAX_VIDEO_SLOWMOTION)
+ sp = MAX_VIDEO_SLOWMOTION;
+ CHECK(ioctl(videoDev, VIDEO_SLOWMOTION, sp));
+ }
+}
+
void cPlayBuffer::Empty(bool Block)
{
if (!(blockInput || blockOutput)) {
@@ -746,67 +779,112 @@ void cPlayBuffer::Empty(bool Block)
void cPlayBuffer::Pause(void)
{
- paused = !paused;
- bool empty = fastForward || fastRewind;
- if (empty)
- Empty(true);
- fastForward = fastRewind = false;
- CHECK(ioctl(videoDev, paused ? VIDEO_FREEZE : VIDEO_CONTINUE));
- //CHECK(ioctl(audioDev, AUDIO_SET_MUTE, paused)); //XXX this caused chirping sound when playing a DVD
- still = false;
- if (empty)
- Empty(false);
+ if (playMode == pmPause || playMode == pmStill)
+ Play();
+ else {
+ bool empty = (playMode == pmFast || (playMode == pmSlow && playDir == pdBackward));
+ if (empty)
+ Empty(true);
+ CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false));
+ CHECK(ioctl(videoDev, VIDEO_FREEZE));
+ playMode = pmPause;
+ if (empty)
+ Empty(false);
+ }
}
void cPlayBuffer::Play(void)
{
- if (fastForward || fastRewind || paused) {
- bool empty = !paused || fastRewind;
+ if (playMode != pmPlay) {
+ bool empty = (playMode == pmStill || playMode == pmFast || (playMode == pmSlow && playDir == pdBackward));
if (empty)
Empty(true);
- still = false;
- CHECK(ioctl(videoDev, paused ? VIDEO_CONTINUE : VIDEO_PLAY));
CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, true));
- //CHECK(ioctl(audioDev, AUDIO_SET_MUTE, false)); //XXX this caused chirping sound when playing a DVD
+ CHECK(ioctl(videoDev, VIDEO_CONTINUE));
+ playMode = pmPlay;
+ playDir = pdForward;
if (empty)
Empty(false);
- fastForward = fastRewind = paused = false;
- }
+ }
}
void cPlayBuffer::Forward(void)
{
- if (canDoTrickMode || paused) {
- bool empty = !paused || fastRewind;
- if (empty) {
- Empty(true);
- if (fastForward)
- readIndex -= 150; // this about compensates for the buffered data, so that we don't get too far ahead
- }
- still = false;
- fastForward = !fastForward;
- fastRewind = false;
- if (paused)
- CHECK(ioctl(videoDev, fastForward ? VIDEO_SLOWMOTION : VIDEO_FREEZE, 2));
- CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, !fastForward));
- CHECK(ioctl(audioDev, AUDIO_SET_MUTE, fastForward || paused));
- if (empty)
- Empty(false);
- }
+ if (canDoTrickMode) {
+ switch (playMode) {
+ case pmPlay:
+ Empty(true);
+ CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false));
+ playMode = pmFast;
+ playDir = pdForward;
+ trickSpeed = NORMAL_SPEED;
+ TrickSpeed(Setup.MultiSpeedMode ? 1 : MAX_SPEEDS);
+ Empty(false);
+ break;
+ case pmStill:
+ case pmPause:
+ CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false));
+ playMode = pmSlow;
+ playDir = pdForward;
+ trickSpeed = NORMAL_SPEED;
+ TrickSpeed(Setup.MultiSpeedMode ? -1 : -MAX_SPEEDS);
+ break;
+ case pmFast:
+ //XXX
+ if (playDir == pdForward)
+ readIndex -= 150; // this about compensates for the buffered data, so that we don't get too far ahead
+ //XXX
+ if (Setup.MultiSpeedMode)
+ TrickSpeed(playDir == pdForward ? 1 : -1);
+ else if (playDir == pdForward)
+ Play();
+ break;
+ case pmSlow:
+ if (Setup.MultiSpeedMode)
+ TrickSpeed(playDir == pdForward ? -1 : 1);
+ else if (playDir == pdForward)
+ Pause();
+ break;
+ }
+ }
}
void cPlayBuffer::Backward(void)
{
if (canDoTrickMode) {
- Empty(true);
- still = false;
- fastRewind = !fastRewind;
- fastForward = false;
- if (paused)
- CHECK(ioctl(videoDev, fastRewind ? VIDEO_CONTINUE : VIDEO_FREEZE));
- CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, !fastRewind));
- CHECK(ioctl(audioDev, AUDIO_SET_MUTE, fastRewind || paused));
- Empty(false);
+ switch (playMode) {
+ case pmPlay:
+ Empty(true);
+ CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false));
+ playMode = pmFast;
+ playDir = pdBackward;
+ trickSpeed = NORMAL_SPEED;
+ TrickSpeed(Setup.MultiSpeedMode ? 1 : MAX_SPEEDS);
+ Empty(false);
+ break;
+ case pmStill:
+ case pmPause:
+ Empty(true);
+ CHECK(ioctl(audioDev, AUDIO_SET_AV_SYNC, false));
+ playMode = pmSlow;
+ playDir = pdBackward;
+ trickSpeed = NORMAL_SPEED;
+ TrickSpeed(Setup.MultiSpeedMode ? -1 : -MAX_SPEEDS);
+ Empty(false);
+ break;
+ case pmFast:
+ if (Setup.MultiSpeedMode)
+ TrickSpeed(playDir == pdBackward ? 1 : -1);
+ else if (playDir == pdBackward)
+ Play();
+ break;
+ case pmSlow:
+ if (Setup.MultiSpeedMode)
+ TrickSpeed(playDir == pdBackward ? -1 : 1);
+ else if (playDir == pdBackward)
+ Pause();
+ break;
+ }
}
}
@@ -890,18 +968,17 @@ void cReplayBuffer::Input(void)
blockInput = 1;
continue;
}
- if (!still) {
+ if (playMode != pmStill) {
int r = 0;
- if (fastForward && !paused || fastRewind) {
+ if (playMode == pmFast || (playMode == pmSlow && playDir == pdBackward)) {
uchar FileNumber;
int FileOffset, Length;
- int Index = index->GetNextIFrame(readIndex, fastForward, &FileNumber, &FileOffset, &Length);
+ int Index = index->GetNextIFrame(readIndex, playDir == pdForward, &FileNumber, &FileOffset, &Length);
if (Index >= 0) {
if (!NextFile(FileNumber, FileOffset))
break;
}
else {
- paused = fastForward = fastRewind = false;
Play();
continue;
}
@@ -1073,23 +1150,21 @@ void cReplayBuffer::Goto(int Index, bool Still)
{
if (index) {
Empty(true);
- if (paused)
- CHECK(ioctl(videoDev, VIDEO_CONTINUE));
if (++Index <= 0)
Index = 1; // not '0', to allow GetNextIFrame() below to work!
uchar FileNumber;
int FileOffset, Length;
Index = index->GetNextIFrame(Index, false, &FileNumber, &FileOffset, &Length);
if (Index >= 0 && NextFile(FileNumber, FileOffset) && Still) {
- still = true;
uchar b[MAXFRAMESIZE];
int r = ReadFrame(replayFile, b, Length, sizeof(b));
- if (r > 0)
+ if (r > 0) {
+ if (playMode == pmPause)
+ CHECK(ioctl(videoDev, VIDEO_CONTINUE));
DisplayFrame(b, r);
- paused = true;
+ }
+ playMode = pmStill;
}
- else
- still = false;
readIndex = writeIndex = Index;
Empty(false);
}
@@ -1098,7 +1173,7 @@ void cReplayBuffer::Goto(int Index, bool Still)
void cReplayBuffer::GetIndex(int &Current, int &Total, bool SnapToIFrame)
{
if (index) {
- if (still)
+ if (playMode == pmStill)
Current = readIndex;
else {
Current = writeIndex;
@@ -1180,7 +1255,7 @@ private:
int is_nav_pack(unsigned char *buffer);
void Close(void);
virtual void Empty(bool Block = false);
- int decode_packet(unsigned char *sector, int iframe);
+ int decode_packet(unsigned char *sector, bool trickmode);
int ScanVideoPacket(const uchar *Data, int Count, uchar *PictureType);
bool PacketStart(uchar **Data, int len);
int GetPacketType(const uchar *Data);
@@ -1460,7 +1535,7 @@ void cDVDplayBuffer::Input(void)
}
// init settings for next state
- if (!fastRewind)
+ if (playDir == pdForward)
cur_pack = cur_pgc->cell_playback[cur_cell].first_sector;
else
cur_pack = cur_pgc->cell_playback[cur_cell].last_vobu_start_sector;
@@ -1478,7 +1553,7 @@ void cDVDplayBuffer::Input(void)
* We loop until we're out of this cell.
*/
- if (!fastRewind) {
+ if (playDir == pdForward) {
if (cur_pack >= cur_pgc->cell_playback[cur_cell].last_sector) {
cur_cell = next_cell;
#ifdef DVDDEBUG
@@ -1573,7 +1648,7 @@ void cDVDplayBuffer::Input(void)
case cREADFRAME:
{
- int trickMode = (fastForward && !paused || fastRewind);
+ bool trickMode = (playMode != pmPlay);
/* FIXME:
* the entire trickMode code relies on the assumtion
@@ -1582,7 +1657,7 @@ void cDVDplayBuffer::Input(void)
* I have no clue wether that is correct or not !!!
*/
if (trickMode && (skipCnt++ % 4 != 0)) {
- cur_pack = (!fastRewind) ? next_vobu : prev_vobu;
+ cur_pack = (playDir == pdForward) ? next_vobu : prev_vobu;
NextState(cOUTPACK);
break;
}
@@ -1609,7 +1684,7 @@ void cDVDplayBuffer::Input(void)
case cOUTFRAMES:
{
- int trickMode = (fastForward && !paused || fastRewind);
+ bool trickMode = (playMode != pmPlay);
/**
* Output cursize packs.
@@ -1624,7 +1699,7 @@ void cDVDplayBuffer::Input(void)
if (decode_packet(&data[pktcnt * DVD_VIDEO_LB_LEN], trickMode) != 1) { //we've got a video packet
if (trickMode) {
//dsyslog(LOG_INFO, "DVD: did pack: %d", pktcnt);
- cur_pack = (!fastRewind) ? next_vobu : prev_vobu;
+ cur_pack = (playDir == pdForward) ? next_vobu : prev_vobu;
NextState(cOUTPACK);
break;
}
@@ -1835,7 +1910,7 @@ void cDVDplayBuffer::putFrame(unsigned char *sector, int length)
;
}
-int cDVDplayBuffer::decode_packet(unsigned char *sector, int trickMode)
+int cDVDplayBuffer::decode_packet(unsigned char *sector, bool trickMode)
{
uchar pt = 1;
#if 0
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 09:28:20 +0000