diff options
Diffstat (limited to 'device.h')
| -rw-r--r-- | device.h | 37 |
1 files changed, 30 insertions, 7 deletions
@@ -4,7 +4,7 @@ * See the main source file 'vdr.c' for copyright information and * how to reach the author. * - * $Id: device.h 1.5 2002/08/04 14:02:19 kls Exp $ + * $Id: device.h 1.9 2002/08/16 08:52:27 kls Exp $ */ #ifndef __DEVICE_H @@ -26,6 +26,23 @@ enum eSetChannelResult { scrOk, scrNoTransfer, scrFailed }; +enum ePlayMode { pmNone, // audio/video from decoder + pmAudioVideo, // audio/video from player + pmAudioOnly, // audio only from player, video from decoder + pmExtern_THIS_SHOULD_BE_AVOIDED + // external player (e.g. MPlayer), release the device + // WARNING: USE THIS MODE ONLY AS A LAST RESORT, IF YOU + // ABSOLUTELY, POSITIVELY CAN'T IMPLEMENT YOUR PLAYER + // THE WAY IT IS SUPPOSED TO WORK. FORCING THE DEVICE + // TO RELEASE ITS FILES HANDLES (OR WHATEVER RESOURCES + // IT MAY USE) TO ALLOW AN EXTERNAL PLAYER TO ACCESS + // THEM MEANS THAT SUCH A PLAYER WILL NEED TO HAVE + // DETAILED KNOWLEDGE ABOUT THE INTERNALS OF THE DEVICE + // IN USE. AS A CONSEQUENCE, YOUR PLAYER MAY NOT WORK + // IF A PARTICULAR VDR INSTALLATION USES A DEVICE NOT + // KNOWN TO YOUR PLAYER. + }; + class cChannel; class cPlayer; class cReceiver; @@ -97,7 +114,9 @@ public: bool IsPrimaryDevice(void) const { return this == primaryDevice; } int CardIndex(void) const { return cardIndex; } // Returns the card index of this device (0 ... MAXDEVICES - 1). - int ProvidesCa(int Ca); + virtual int ProvidesCa(int Ca); + //XXX TODO temporarily made this function virtual - until a general + //XXX mechanism has been implemented // Checks whether this device provides the given value in its // caCaps. Returns 0 if the value is not provided, 1 if only this // value is provided, and > 1 if this and other values are provided. @@ -188,11 +207,9 @@ public: private: cPlayer *player; protected: - virtual int SetPlayMode(bool On); - // Sets the device into play mode (On = true) or normal - // viewing mode (On = false). If On is true, it may return a file - // handle that a player can use to poll this device when replaying. - //XXX TODO should be implemented differently + virtual bool SetPlayMode(ePlayMode PlayMode); + // Sets the device into the given play mode. + // Returns true if the operation was successful. public: virtual void TrickSpeed(int Speed); // Sets the device into a mode where replay is done slower. @@ -209,6 +226,12 @@ public: // Turns off audio while replaying. virtual void StillPicture(const uchar *Data, int Length); // Displays the given I-frame as a still picture. + virtual bool Poll(cPoller &Poller, int TimeoutMs = 0); + // Returns true if the device itself or any of the file handles in + // Poller is ready for further action. + // If TimeoutMs is not zero, the device will wait up to the given number + // of milleseconds before returning in case there is no immediate + // need for data. virtual int PlayVideo(const uchar *Data, int Length); // Actually plays the given data block as video. The data must be // part of a PES (Packetized Elementary Stream) which can contain |