LINUX DVB API Version 3 - Linux TV.org

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38 DVB VIDEO DEVICE 4.2.5 VIDEO PLAY DESCRIPTION This ioctl call asks the Video Device to start playing a video stream from the selected source. SYNOPSIS int ioctl(fd, int request = VIDEO PLAY); PARAMETERS int fd File descriptor returned by a previous call to open(). int request Equals VIDEO PLAY for this command. ERRORS EBADF fd is not a valid open file descriptor EINTERNAL Internal error, possibly in the communication with the DVB subsystem. 4.2.6 VIDEO FREEZE DESCRIPTION This ioctl call suspends the live video stream being played. Decoding and playing are frozen. It is then possible to restart the decoding and playing process of the video stream using the VIDEO CONTINUE command. If VIDEO SOURCE MEMORY is selected in the ioctl call VIDEO SELECT SOURCE, the DVB subsystem will not decode any more data until the ioctl call VIDEO CONTINUE or VIDEO PLAY is performed. SYNOPSIS int ioctl(fd, int request = VIDEO FREEZE); PARAMETERS int fd File descriptor returned by a previous call to open(). int request Equals VIDEO FREEZE for this command. ERRORS EBADF fd is not a valid open file descriptor EINTERNAL Internal error, possibly in the communication with the DVB subsystem. 4.2.7 VIDEO CONTINUE DESCRIPTION This ioctl call restarts decoding and playing processes of the video stream which was played before a call to VIDEO FREEZE was made. SYNOPSIS int ioctl(fd, int request = VIDEO CONTINUE); PARAMETERS 38
4.2. Video Function Calls 39 int fd File descriptor returned by a previous call to open(). int request Equals VIDEO CONTINUE for this command. ERRORS EBADF fd is not a valid open file descriptor EINTERNAL Internal error, possibly in the communication with the DVB subsystem. 4.2.8 VIDEO SELECT SOURCE DESCRIPTION This ioctl call informs the video device which source shall be used for the input data. The possible sources are demux or memory. If memory is selected, the data is fed to the video device through the write command. SYNOPSIS int ioctl(fd, int request = VIDEO SELECT SOURCE, video stream source t source); PARAMETERS int fd File descriptor returned by a previous call to open(). int request Equals VIDEO SELECT SOURCE for this command. video stream source t source Indicates which source shall be used for the Video stream. ERRORS EBADF fd is not a valid open file descriptor EINTERNAL Internal error, possibly in the communication with the DVB subsystem. 4.2.9 VIDEO SET BLANK DESCRIPTION This ioctl call asks the Video Device to blank out the picture. SYNOPSIS int ioctl(fd, int request = VIDEO SET BLANK, boolean mode); PARAMETERS int fd File descriptor returned by a previous call to open(). int request Equals VIDEO SET BLANK for this command. boolean mode TRUE: Blank screen when stop. FALSE: Show last decoded frame. ERRORS EBADF fd is not a valid open file descriptor EINTERNAL Internal error, possibly in the communication with the DVB subsystem. EINVAL Illegal input parameter 39
Page 1 and 2: LINUX DVB API Version 3 Copyright 2
Page 3 and 4: Contents 1 Introduction 1 1.1 What
Page 5 and 6: CONTENTS CONTENTS 4.2.7 VIDEO CONTI
Page 7 and 8: CONTENTS CONTENTS 8.6 Section Feed
Page 9 and 10: Chapter 1 Introduction 1.1 What you
Page 11 and 12: 1.4. Linux DVB Devices 3 1.4 Linux
Page 13 and 14: Chapter 2 DVB Frontend API The DVB
Page 15 and 16: 2.1. Frontend Data Types 7 2.1.5 di
Page 17 and 18: 2.1. Frontend Data Types 9 }; fe_gu
Page 19 and 20: 2.2. Frontend Function Calls 11 2.2
Page 29 and 30: Chapter 3 DVB Demux Device The DVB
Page 31 and 32: 3.1. Demux Data Types 23 }; dmx_pes
Page 33 and 34: 3.2. Demux Function Calls 25 3.2.3
Page 39 and 40: Chapter 4 DVB Video Device The DVB
Page 41 and 42: 4.1. Video Data Types 33 struct vid
Page 43 and 44: 4.1. Video Data Types 35 typedef st
Page 45: 4.2. Video Function Calls 37 4.2.3
Page 49 and 50: 4.2. Video Function Calls 41 4.2.12
Page 51 and 52: 4.2. Video Function Calls 43 PARAME
Page 57 and 58: Chapter 5 DVB Audio Device The DVB
Page 59 and 60: 5.1. Audio Data Types 51 5.1.7 stru
Page 61 and 62: 5.2. Audio Function Calls 53 5.2.3
Page 63 and 64: 5.2. Audio Function Calls 55 5.2.8
Page 65 and 66: 5.2. Audio Function Calls 57 int fd
Page 67 and 68: 5.2. Audio Function Calls 59 int io
Page 69 and 70: Chapter 6 DVB CA Device The DVB CA
Page 71 and 72: 6.2. CA Function Calls 63 6.2 CA Fu
Page 73 and 74: Chapter 7 DVB Network API The DVB n
Page 75 and 76: Chapter 8 Kernel Demux API The kern
Page 77 and 78: 8.1. Kernel Demux Data Types 69 int
Page 79 and 80: 8.1. Kernel Demux Data Types 71 #de
Page 81 and 82: 8.2. Demux Directory API 73 8.2 Dem
Page 83 and 84: 8.3. Demux API 75 8.3 Demux API The
Page 85 and 86: 8.3. Demux API 77 8.3.4 allocate ts
Page 87 and 88: 8.3. Demux API 79 dmx demux t mux*d
Page 89 and 90: 8.3. Demux API 81 8.3.11 remove fro
Page 91 and 92: 8.4. Demux Callback API 83 8.4 Demu
Page 93 and 94: 8.4. Demux Callback API 85 u8* buff
Page 95 and 96: 8.5. TS Feed API 87 8.5 TS Feed API
Page 97 and 98:
8.6. Section Feed API 89 8.6 Sectio
Page 99 and 100:
8.6. Section Feed API 91 This funct
Page 101 and 102:
Chapter 9 Examples In this section
Page 103 and 104:
9.1. Tuning 95 } } return -1; if (d
Page 105 and 106:
9.2. The DVR device 97 } pesFilterP
Page 107 and 108:
9.2. The DVR device 99 } } return -
Page 109 and 110:
Appendix A GNU Free Documentation L
Page 111 and 112:
A.3. Copying in Quantity 103 You ma
Page 113 and 114:
A.5. Combining Documents 105 You ma
Page 115 and 116:
A.10. Future Revisions of This Lice
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