LINUX DVB API Version 3 - Linux TV.org

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42 <strong>DVB</strong> VIDEO DEVICE 4.2.14 VIDEO FAST FORWARD DESCRIPTION This ioctl call asks the Video Device to skip decoding of N number of I-frames. This call can only be used if VIDEO SOURCE MEMORY is selected. SYNOPSIS int ioctl(fd, int request = VIDEO FAST FORWARD, int nFrames); PARAMETERS int fd File descriptor returned by a previous call to open(). int request Equals VIDEO FAST FORWARD for this command. int nFrames The number of frames to skip. ERRORS EBADF fd is not a valid open file descriptor EINTERNAL Internal error. EPERM Mode VIDEO SOURCE MEMORY not selected. EINVAL Illegal parameter format. 4.2.15 VIDEO SLOWMOTION DESCRIPTION This ioctl call asks the video device to repeat decoding frames N number of times. This call can only be used if VIDEO SOURCE MEMORY is selected. SYNOPSIS int ioctl(fd, int request = VIDEO SLOWMOTION, int nFrames); PARAMETERS int fd File descriptor returned by a previous call to open(). int request Equals VIDEO SLOWMOTION for this command. int nFrames The number of times to repeat each frame. ERRORS EBADF fd is not a valid open file descriptor EINTERNAL Internal error. EPERM Mode VIDEO SOURCE MEMORY not selected. EINVAL Illegal parameter format. 4.2.16 VIDEO GET CAPABILITIES DESCRIPTION This ioctl call asks the video device about its decoding capabilities. On success it returns and integer which has bits set according to the defines in section 4.1.8. SYNOPSIS int ioctl(fd, int request = VIDEO GET CAPABILITIES, unsigned int *cap); 42
4.2. Video Function Calls 43 PARAMETERS int fd File descriptor returned by a previous call to open(). int request Equals VIDEO GET CAPABILITIES for this command. unsigned int *cap Pointer to a location where to store the capability information. ERRORS EBADF fd is not a valid open file descriptor EFAULT cap points to an invalid iframe. 4.2.17 VIDEO SET ID DESCRIPTION This ioctl selects which sub-stream is to be decoded if a program or system stream is sent to the video device. SYNOPSIS int ioctl(int fd, int request = VIDEO SET ID, int id); PARAMETERS int fd File descriptor returned by a previous call to open(). int request Equals VIDEO SET ID for this command. int id video sub-stream id ERRORS EBADF fd is not a valid open file descriptor. EINTERNAL Internal error. EINVAL Invalid sub-stream id. 4.2.18 VIDEO CLEAR BUFFER DESCRIPTION This ioctl call clears all video buffers in the driver and in the decoder hardware. SYNOPSIS int ioctl(fd, int request = VIDEO CLEAR BUFFER); PARAMETERS int fd File descriptor returned by a previous call to open(). int request Equals VIDEO CLEAR BUFFER for this command. ERRORS EBADF fd is not a valid open file descriptor 43
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 and 46: 4.2. Video Function Calls 37 4.2.3
Page 47 and 48: 4.2. Video Function Calls 39 int fd
Page 49: 4.2. Video Function Calls 41 4.2.12
Page 53 and 54: 4.2. Video Function Calls 45 PARAME
Page 55 and 56: 4.2. Video Function Calls 47 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
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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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