diff options
author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-25 10:09:31 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-25 10:09:31 -0700 |
commit | 25581ad107be24b89d805da51a03d616f8f3d1be (patch) | |
tree | 36e2bd32667b5dd5a39e1939c1c5162f18967715 /Documentation | |
parent | 72cf2709bf8e0410800f118c4298bfbf8715b303 (diff) | |
parent | 7477ddaa4d2d69bbcd49e12990af158dbb03f2f2 (diff) |
Merge master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb
* master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (244 commits)
V4L/DVB (4210b): git-dvb: tea575x-tuner build fix
V4L/DVB (4210a): git-dvb versus matroxfb
V4L/DVB (4209): Added some BTTV PCI IDs for newer boards
Fixes some sync issues between V4L/DVB development and GIT
V4L/DVB (4206): Cx88-blackbird: always set encoder height based on tvnorm->id
V4L/DVB (4205): Merge tda9887 module into tuner.
V4L/DVB (4203): Explicitly set the enum values.
V4L/DVB (4202): allow selecting CX2341x port mode
V4L/DVB (4200): Disable bitrate_mode when encoding mpeg-1.
V4L/DVB (4199): Add cx2341x-specific control array to cx2341x.c
V4L/DVB (4198): Avoid newer usages of obsoleted experimental MPEGCOMP API
V4L/DVB (4197): Port new MPEG API to saa7134-empress with saa6752hs
V4L/DVB (4196): Port cx88-blackbird to the new MPEG API.
V4L/DVB (4193): Update cx2341x fw encoding API doc.
V4L/DVB (4192): Use control helpers for saa7115, cx25840, msp3400.
V4L/DVB (4191): Add CX2341X MPEG encoder module.
V4L/DVB (4190): Add helper functions for control processing to v4l2-common.
V4L/DVB (4189): Add videodev support for VIDIOC_S/G/TRY_EXT_CTRLS.
V4L/DVB (4188): Add new MPEG control/ioctl definitions to videodev2.h
V4L/DVB (4186): Add support for the DNTV Live! mini DVB-T card.
...
Diffstat (limited to 'Documentation')
22 files changed, 2290 insertions, 487 deletions
diff --git a/Documentation/video4linux/CARDLIST.bttv b/Documentation/video4linux/CARDLIST.bttv index b72706c58a4..4efa4645885 100644 --- a/Documentation/video4linux/CARDLIST.bttv +++ b/Documentation/video4linux/CARDLIST.bttv @@ -87,7 +87,7 @@ 86 -> Osprey 101/151 w/ svid 87 -> Osprey 200/201/250/251 88 -> Osprey 200/250 [0070:ff01] - 89 -> Osprey 210/220 + 89 -> Osprey 210/220/230 90 -> Osprey 500 [0070:ff02] 91 -> Osprey 540 [0070:ff04] 92 -> Osprey 2000 [0070:ff03] @@ -111,7 +111,7 @@ 110 -> IVC-100 [ff00:a132] 111 -> IVC-120G [ff00:a182,ff01:a182,ff02:a182,ff03:a182,ff04:a182,ff05:a182,ff06:a182,ff07:a182,ff08:a182,ff09:a182,ff0a:a182,ff0b:a182,ff0c:a182,ff0d:a182,ff0e:a182,ff0f:a182] 112 -> pcHDTV HD-2000 TV [7063:2000] -113 -> Twinhan DST + clones [11bd:0026,1822:0001,270f:fc00] +113 -> Twinhan DST + clones [11bd:0026,1822:0001,270f:fc00,1822:0026] 114 -> Winfast VC100 [107d:6607] 115 -> Teppro TEV-560/InterVision IV-560 116 -> SIMUS GVC1100 [aa6a:82b2] diff --git a/Documentation/video4linux/CARDLIST.cx88 b/Documentation/video4linux/CARDLIST.cx88 index 3b39a91b24b..6cb63ddf616 100644 --- a/Documentation/video4linux/CARDLIST.cx88 +++ b/Documentation/video4linux/CARDLIST.cx88 @@ -15,7 +15,7 @@ 14 -> KWorld/VStream XPert DVB-T [17de:08a6] 15 -> DViCO FusionHDTV DVB-T1 [18ac:db00] 16 -> KWorld LTV883RF - 17 -> DViCO FusionHDTV 3 Gold-Q [18ac:d810] + 17 -> DViCO FusionHDTV 3 Gold-Q [18ac:d810,18ac:d800] 18 -> Hauppauge Nova-T DVB-T [0070:9002,0070:9001] 19 -> Conexant DVB-T reference design [14f1:0187] 20 -> Provideo PV259 [1540:2580] @@ -40,8 +40,13 @@ 39 -> KWorld DVB-S 100 [17de:08b2] 40 -> Hauppauge WinTV-HVR1100 DVB-T/Hybrid [0070:9400,0070:9402] 41 -> Hauppauge WinTV-HVR1100 DVB-T/Hybrid (Low Profile) [0070:9800,0070:9802] - 42 -> digitalnow DNTV Live! DVB-T Pro [1822:0025] + 42 -> digitalnow DNTV Live! DVB-T Pro [1822:0025,1822:0019] 43 -> KWorld/VStream XPert DVB-T with cx22702 [17de:08a1] 44 -> DViCO FusionHDTV DVB-T Dual Digital [18ac:db50,18ac:db54] 45 -> KWorld HardwareMpegTV XPert [17de:0840] 46 -> DViCO FusionHDTV DVB-T Hybrid [18ac:db40,18ac:db44] + 47 -> pcHDTV HD5500 HDTV [7063:5500] + 48 -> Kworld MCE 200 Deluxe [17de:0841] + 49 -> PixelView PlayTV P7000 [1554:4813] + 50 -> NPG Tech Real TV FM Top 10 [14f1:0842] + 51 -> WinFast DTV2000 H [107d:665e] diff --git a/Documentation/video4linux/CARDLIST.saa7134 b/Documentation/video4linux/CARDLIST.saa7134 index bca50903233..9068b669f5e 100644 --- a/Documentation/video4linux/CARDLIST.saa7134 +++ b/Documentation/video4linux/CARDLIST.saa7134 @@ -93,3 +93,4 @@ 92 -> AVerMedia A169 B1 [1461:6360] 93 -> Medion 7134 Bridge #2 [16be:0005] 94 -> LifeView FlyDVB-T Hybrid Cardbus [5168:3306,5168:3502] + 95 -> LifeView FlyVIDEO3000 (NTSC) [5169:0138] diff --git a/Documentation/video4linux/CARDLIST.tuner b/Documentation/video4linux/CARDLIST.tuner index 1bcdac67dd8..44134f04b82 100644 --- a/Documentation/video4linux/CARDLIST.tuner +++ b/Documentation/video4linux/CARDLIST.tuner @@ -62,7 +62,7 @@ tuner=60 - Thomson DTT 761X (ATSC/NTSC) tuner=61 - Tena TNF9533-D/IF/TNF9533-B/DF tuner=62 - Philips TEA5767HN FM Radio tuner=63 - Philips FMD1216ME MK3 Hybrid Tuner -tuner=64 - LG TDVS-H062F/TUA6034 +tuner=64 - LG TDVS-H06xF tuner=65 - Ymec TVF66T5-B/DFF tuner=66 - LG TALN series tuner=67 - Philips TD1316 Hybrid Tuner @@ -71,3 +71,4 @@ tuner=69 - Tena TNF 5335 and similar models tuner=70 - Samsung TCPN 2121P30A tuner=71 - Xceive xc3028 tuner=72 - Thomson FE6600 +tuner=73 - Samsung TCPG 6121P30A diff --git a/Documentation/video4linux/CQcam.txt b/Documentation/video4linux/CQcam.txt index 464e4cec94c..ade8651e244 100644 --- a/Documentation/video4linux/CQcam.txt +++ b/Documentation/video4linux/CQcam.txt @@ -185,207 +185,10 @@ this work is documented at the video4linux2 site listed below. 9.0 --- A sample program using v4lgrabber, -This program is a simple image grabber that will copy a frame from the +v4lgrab is a simple image grabber that will copy a frame from the first video device, /dev/video0 to standard output in portable pixmap -format (.ppm) Using this like: 'v4lgrab | convert - c-qcam.jpg' -produced this picture of me at - http://mug.sys.virginia.edu/~drf5n/extras/c-qcam.jpg - --------------------- 8< ---------------- 8< ----------------------------- - -/* Simple Video4Linux image grabber. */ -/* - * Video4Linux Driver Test/Example Framegrabbing Program - * - * Compile with: - * gcc -s -Wall -Wstrict-prototypes v4lgrab.c -o v4lgrab - * Use as: - * v4lgrab >image.ppm - * - * Copyright (C) 1998-05-03, Phil Blundell <philb@gnu.org> - * Copied from http://www.tazenda.demon.co.uk/phil/vgrabber.c - * with minor modifications (Dave Forrest, drf5n@virginia.edu). - * - */ - -#include <unistd.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <stdio.h> -#include <sys/ioctl.h> -#include <stdlib.h> - -#include <linux/types.h> -#include <linux/videodev.h> - -#define FILE "/dev/video0" - -/* Stole this from tvset.c */ - -#define READ_VIDEO_PIXEL(buf, format, depth, r, g, b) \ -{ \ - switch (format) \ - { \ - case VIDEO_PALETTE_GREY: \ - switch (depth) \ - { \ - case 4: \ - case 6: \ - case 8: \ - (r) = (g) = (b) = (*buf++ << 8);\ - break; \ - \ - case 16: \ - (r) = (g) = (b) = \ - *((unsigned short *) buf); \ - buf += 2; \ - break; \ - } \ - break; \ - \ - \ - case VIDEO_PALETTE_RGB565: \ - { \ - unsigned short tmp = *(unsigned short *)buf; \ - (r) = tmp&0xF800; \ - (g) = (tmp<<5)&0xFC00; \ - (b) = (tmp<<11)&0xF800; \ - buf += 2; \ - } \ - break; \ - \ - case VIDEO_PALETTE_RGB555: \ - (r) = (buf[0]&0xF8)<<8; \ - (g) = ((buf[0] << 5 | buf[1] >> 3)&0xF8)<<8; \ - (b) = ((buf[1] << 2 ) & 0xF8)<<8; \ - buf += 2; \ - break; \ - \ - case VIDEO_PALETTE_RGB24: \ - (r) = buf[0] << 8; (g) = buf[1] << 8; \ - (b) = buf[2] << 8; \ - buf += 3; \ - break; \ - \ - default: \ - fprintf(stderr, \ - "Format %d not yet supported\n", \ - format); \ - } \ -} - -int get_brightness_adj(unsigned char *image, long size, int *brightness) { - long i, tot = 0; - for (i=0;i<size*3;i++) - tot += image[i]; - *brightness = (128 - tot/(size*3))/3; - return !((tot/(size*3)) >= 126 && (tot/(size*3)) <= 130); -} - -int main(int argc, char ** argv) -{ - int fd = open(FILE, O_RDONLY), f; - struct video_capability cap; - struct video_window win; - struct video_picture vpic; - - unsigned char *buffer, *src; - int bpp = 24, r, g, b; - unsigned int i, src_depth; - - if (fd < 0) { - perror(FILE); - exit(1); - } - - if (ioctl(fd, VIDIOCGCAP, &cap) < 0) { - perror("VIDIOGCAP"); - fprintf(stderr, "(" FILE " not a video4linux device?)\n"); - close(fd); - exit(1); - } - - if (ioctl(fd, VIDIOCGWIN, &win) < 0) { - perror("VIDIOCGWIN"); - close(fd); - exit(1); - } - - if (ioctl(fd, VIDIOCGPICT, &vpic) < 0) { - perror("VIDIOCGPICT"); - close(fd); - exit(1); - } - - if (cap.type & VID_TYPE_MONOCHROME) { - vpic.depth=8; - vpic.palette=VIDEO_PALETTE_GREY; /* 8bit grey */ - if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) { - vpic.depth=6; - if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) { - vpic.depth=4; - if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) { - fprintf(stderr, "Unable to find a supported capture format.\n"); - close(fd); - exit(1); - } - } - } - } else { - vpic.depth=24; - vpic.palette=VIDEO_PALETTE_RGB24; - - if(ioctl(fd, VIDIOCSPICT, &vpic) < 0) { - vpic.palette=VIDEO_PALETTE_RGB565; - vpic.depth=16; - - if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) { - vpic.palette=VIDEO_PALETTE_RGB555; - vpic.depth=15; - - if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) { - fprintf(stderr, "Unable to find a supported capture format.\n"); - return -1; - } - } - } - } - - buffer = malloc(win.width * win.height * bpp); - if (!buffer) { - fprintf(stderr, "Out of memory.\n"); - exit(1); - } - - do { - int newbright; - read(fd, buffer, win.width * win.height * bpp); - f = get_brightness_adj(buffer, win.width * win.height, &newbright); - if (f) { - vpic.brightness += (newbright << 8); - if(ioctl(fd, VIDIOCSPICT, &vpic)==-1) { - perror("VIDIOSPICT"); - break; - } - } - } while (f); - - fprintf(stdout, "P6\n%d %d 255\n", win.width, win.height); - - src = buffer; - - for (i = 0; i < win.width * win.height; i++) { - READ_VIDEO_PIXEL(src, vpic.palette, src_depth, r, g, b); - fputc(r>>8, stdout); - fputc(g>>8, stdout); - fputc(b>>8, stdout); - } - - close(fd); - return 0; -} --------------------- 8< ---------------- 8< ----------------------------- +format (.ppm) To produce .jpg output, you can use it like this: +'v4lgrab | convert - c-qcam.jpg' 10.0 --- Other Information diff --git a/Documentation/video4linux/Zoran b/Documentation/video4linux/Zoran index be9f21b8455..040a2c841ae 100644 --- a/Documentation/video4linux/Zoran +++ b/Documentation/video4linux/Zoran @@ -33,6 +33,21 @@ Inputs/outputs: Composite and S-video Norms: PAL, SECAM (720x576 @ 25 fps), NTSC (720x480 @ 29.97 fps) Card number: 7 +AverMedia 6 Eyes AVS6EYES: +* Zoran zr36067 PCI controller +* Zoran zr36060 MJPEG codec +* Samsung ks0127 TV decoder +* Conexant bt866 TV encoder +Drivers to use: videodev, i2c-core, i2c-algo-bit, + videocodec, ks0127, bt866, zr36060, zr36067 +Inputs/outputs: Six physical inputs. 1-6 are composite, + 1-2, 3-4, 5-6 doubles as S-video, + 1-3 triples as component. + One composite output. +Norms: PAL, SECAM (720x576 @ 25 fps), NTSC (720x480 @ 29.97 fps) +Card number: 8 +Not autodetected, card=8 is necessary. + Linux Media Labs LML33: * Zoran zr36067 PCI controller * Zoran zr36060 MJPEG codec @@ -192,6 +207,10 @@ Micronas vpx3220a TV decoder was introduced in 1996, is used in the DC30 and DC30+ and can handle: PAL B/G/H/I, PAL N, PAL M, NTSC M, NTSC 44, PAL 60, SECAM,NTSC Comb +Samsung ks0127 TV decoder +is used in the AVS6EYES card and +can handle: NTSC-M/N/44, PAL-M/N/B/G/H/I/D/K/L and SECAM + =========================== 1.2 What the TV encoder can do an what not @@ -221,6 +240,10 @@ ITT mse3000 TV encoder was introduced in 1991, is used in the DC10 old can generate: PAL , NTSC , SECAM +Conexant bt866 TV encoder +is used in AVS6EYES, and +can generate: NTSC/PAL, PALM, PALN + The adv717x, should be able to produce PAL N. But you find nothing PAL N specific in the registers. Seem that you have to reuse a other standard to generate PAL N, maybe it would work if you use the PAL M settings. diff --git a/Documentation/video4linux/bttv/CONTRIBUTORS b/Documentation/video4linux/bttv/CONTRIBUTORS index aef49db8847..8aad6dd93d6 100644 --- a/Documentation/video4linux/bttv/CONTRIBUTORS +++ b/Documentation/video4linux/bttv/CONTRIBUTORS @@ -1,4 +1,4 @@ -Contributors to bttv: +Contributors to bttv: Michael Chu <mmchu@pobox.com> AverMedia fix and more flexible card recognition @@ -8,8 +8,8 @@ Alan Cox <alan@redhat.com> Chris Kleitsch Hardware I2C - -Gerd Knorr <kraxel@cs.tu-berlin.de> + +Gerd Knorr <kraxel@cs.tu-berlin.de> Radio card (ITT sound processor) bigfoot <bigfoot@net-way.net> @@ -18,7 +18,7 @@ Ragnar Hojland Espinosa <ragnar@macula.net> + many more (please mail me if you are missing in this list and would - like to be mentioned) + like to be mentioned) diff --git a/Documentation/video4linux/cx2341x/fw-calling.txt b/Documentation/video4linux/cx2341x/fw-calling.txt new file mode 100644 index 00000000000..8d21181de53 --- /dev/null +++ b/Documentation/video4linux/cx2341x/fw-calling.txt @@ -0,0 +1,69 @@ +This page describes how to make calls to the firmware api. + +How to call +=========== + +The preferred calling convention is known as the firmware mailbox. The +mailboxes are basically a fixed length array that serves as the call-stack. + +Firmware mailboxes can be located by searching the encoder and decoder memory +for a 16 byte signature. That signature will be located on a 256-byte boundary. + +Signature: +0x78, 0x56, 0x34, 0x12, 0x12, 0x78, 0x56, 0x34, +0x34, 0x12, 0x78, 0x56, 0x56, 0x34, 0x12, 0x78 + +The firmware implements 20 mailboxes of 20 32-bit words. The first 10 are +reserved for API calls. The second 10 are used by the firmware for event +notification. + + Index Name + ----- ---- + 0 Flags + 1 Command + 2 Return value + 3 Timeout + 4-19 Parameter/Result + + +The flags are defined in the following table. The direction is from the +perspective of the firmware. + + Bit Direction Purpose + --- --------- ------- + 2 O Firmware has processed the command. + 1 I Driver has finished setting the parameters. + 0 I Driver is using this mailbox. + + +The command is a 32-bit enumerator. The API specifics may be found in the +fw-*-api.txt documents. + +The return value is a 32-bit enumerator. Only two values are currently defined: +0=success and -1=command undefined. + +There are 16 parameters/results 32-bit fields. The driver populates these fields +with values for all the parameters required by the call. The driver overwrites +these fields with result values returned by the call. The API specifics may be +found in the fw-*-api.txt documents. + +The timeout value protects the card from a hung driver thread. If the driver +doesn't handle the completed call within the timeout specified, the firmware +will reset that mailbox. + +To make an API call, the driver iterates over each mailbox looking for the +first one available (bit 0 has been cleared). The driver sets that bit, fills +in the command enumerator, the timeout value and any required parameters. The +driver then sets the parameter ready bit (bit 1). The firmware scans the +mailboxes for pending commands, processes them, sets the result code, populates +the result value array with that call's return values and sets the call +complete bit (bit 2). Once bit 2 is set, the driver should retrieve the results +and clear all the flags. If the driver does not perform this task within the +time set in the timeout register, the firmware will reset that mailbox. + +Event notifications are sent from the firmware to the host. The host tells the +firmware which events it is interested in via an API call. That call tells the +firmware which notification mailbox to use. The firmware signals the host via +an interrupt. Only the 16 Results fields are used, the Flags, Command, Return +value and Timeout words are not used. + diff --git a/Documentation/video4linux/cx2341x/fw-decoder-api.txt b/Documentation/video4linux/cx2341x/fw-decoder-api.txt new file mode 100644 index 00000000000..9df4fb3ea0f --- /dev/null +++ b/Documentation/video4linux/cx2341x/fw-decoder-api.txt @@ -0,0 +1,319 @@ +Decoder firmware API description +================================ + +Note: this API is part of the decoder firmware, so it's cx23415 only. + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_PING_FW +Enum 0/0x00 +Description + This API call does nothing. It may be used to check if the firmware + is responding. + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_START_PLAYBACK +Enum 1/0x01 +Description + Begin or resume playback. +Param[0] + 0 based frame number in GOP to begin playback from. +Param[1] + Specifies the number of muted audio frames to play before normal + audio resumes. + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_STOP_PLAYBACK +Enum 2/0x02 +Description + Ends playback and clears all decoder buffers. If PTS is not zero, + playback stops at specified PTS. +Param[0] + Display 0=last frame, 1=black +Param[1] + PTS low +Param[2] + PTS high + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_SET_PLAYBACK_SPEED +Enum 3/0x03 +Description + Playback stream at speed other than normal. There are two modes of + operation: + Smooth: host transfers entire stream and firmware drops unused + frames. + Coarse: host drops frames based on indexing as required to achieve + desired speed. +Param[0] + Bitmap: + 0:7 0 normal + 1 fast only "1.5 times" + n nX fast, 1/nX slow + 30 Framedrop: + '0' during 1.5 times play, every other B frame is dropped + '1' during 1.5 times play, stream is unchanged (bitrate + must not exceed 8mbps) + 31 Speed: + '0' slow + '1' fast +Param[1] + Direction: 0=forward, 1=reverse +Param[2] + Picture mask: + 1=I frames + 3=I, P frames + 7=I, P, B frames +Param[3] + B frames per GOP (for reverse play only) +Param[4] + Mute audio: 0=disable, 1=enable +Param[5] + Display 0=frame, 1=field +Param[6] + Specifies the number of muted audio frames to play before normal audio + resumes. + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_STEP_VIDEO +Enum 5/0x05 +Description + Each call to this API steps the playback to the next unit defined below + in the current playback direction. +Param[0] + 0=frame, 1=top field, 2=bottom field + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_SET_DMA_BLOCK_SIZE +Enum 8/0x08 +Description + Set DMA transfer block size. Counterpart to API 0xC9 +Param[0] + DMA transfer block size in bytes. A different size may be specified + when issuing the DMA transfer command. + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_GET_XFER_INFO +Enum 9/0x09 +Description + This API call may be used to detect an end of stream condtion. +Result[0] + Stream type +Result[1] + Address offset +Result[2] + Maximum bytes to transfer +Result[3] + Buffer fullness + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_GET_DMA_STATUS +Enum 10/0x0A +Description + Status of the last DMA transfer +Result[0] + Bit 1 set means transfer complete + Bit 2 set means DMA error + Bit 3 set means linked list error +Result[1] + DMA type: 0=MPEG, 1=OSD, 2=YUV + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_SCHED_DMA_FROM_HOST +Enum 11/0x0B +Description + Setup DMA from host operation. Counterpart to API 0xCC +Param[0] + Memory address of link list +Param[1] + Total # of bytes to transfer +Param[2] + DMA type (0=MPEG, 1=OSD, 2=YUV) + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_PAUSE_PLAYBACK +Enum 13/0x0D +Description + Freeze playback immediately. In this mode, when internal buffers are + full, no more data will be accepted and data request IRQs will be + masked. +Param[0] + Display: 0=last frame, 1=black + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_HALT_FW +Enum 14/0x0E +Description + The firmware is halted and no further API calls are serviced until + the firmware is uploaded again. + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_SET_STANDARD +Enum 16/0x10 +Description + Selects display standard +Param[0] + 0=NTSC, 1=PAL + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_GET_VERSION +Enum 17/0x11 +Description + Returns decoder firmware version information +Result[0] + Version bitmask: + Bits 0:15 build + Bits 16:23 minor + Bits 24:31 major + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_SET_STREAM_INPUT +Enum 20/0x14 +Description + Select decoder stream input port +Param[0] + 0=memory (default), 1=streaming + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_GET_TIMING_INFO +Enum 21/0x15 +Description + Returns timing information from start of playback +Result[0] + Frame count by decode order +Result[1] + Video PTS bits 0:31 by display order +Result[2] + Video PTS bit 32 by display order +Result[3] + SCR bits 0:31 by display order +Result[4] + SCR bit 32 by display order + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_SET_AUDIO_MODE +Enum 22/0x16 +Description + Select audio mode +Param[0] + Dual mono mode action +Param[1] + Stereo mode action: + 0=Stereo, 1=Left, 2=Right, 3=Mono, 4=Swap, -1=Unchanged + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_SET_EVENT_NOTIFICATION +Enum 23/0x17 +Description + Setup firmware to notify the host about a particular event. + Counterpart to API 0xD5 +Param[0] + Event: 0=Audio mode change between stereo and dual channel +Param[1] + Notification 0=disabled, 1=enabled +Param[2] + Interrupt bit +Param[3] + Mailbox slot, -1 if no mailbox required. + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_SET_DISPLAY_BUFFERS +Enum 24/0x18 +Description + Number of display buffers. To decode all frames in reverse playback you + must use nine buffers. +Param[0] + 0=six buffers, 1=nine buffers + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_EXTRACT_VBI +Enum 25/0x19 +Description + Extracts VBI data +Param[0] + 0=extract from extension & user data, 1=extract from private packets +Result[0] + VBI table location +Result[1] + VBI table size + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_SET_DECODER_SOURCE +Enum 26/0x1A +Description + Selects decoder source. Ensure that the parameters passed to this + API match the encoder settings. +Param[0] + Mode: 0=MPEG from host, 1=YUV from encoder, 2=YUV from host +Param[1] + YUV picture width +Param[2] + YUV picture height +Param[3] + Bitmap: see Param[0] of API 0xBD + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_SET_AUDIO_OUTPUT +Enum 27/0x1B +Description + Select audio output format +Param[0] + Bitmask: + 0:1 Data size: + '00' 16 bit + '01' 20 bit + '10' 24 bit + 2:7 Unused + 8:9 Mode: + '00' 2 channels + '01' 4 channels + '10' 6 channels + '11' 6 channels with one line data mode + (for left justified MSB first mode, 20 bit only) + 10:11 Unused + 12:13 Channel format: + '00' right justified MSB first mode + '01' left justified MSB first mode + '10' I2S mode + 14:15 Unused + 16:21 Right justify bit count + 22:31 Unused + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_SET_AV_DELAY +Enum 28/0x1C +Description + Set audio/video delay in 90Khz ticks +Param[0] + 0=A/V in sync, negative=audio lags, positive=video lags + +------------------------------------------------------------------------------- + +Name CX2341X_DEC_SET_PREBUFFERING +Enum 30/0x1E +Description + Decoder prebuffering, when enabled up to 128KB are buffered for + streams <8mpbs or 640KB for streams >8mbps +Param[0] + 0=off, 1=on diff --git a/Documentation/video4linux/cx2341x/fw-dma.txt b/Documentation/video4linux/cx2341x/fw-dma.txt new file mode 100644 index 00000000000..8123e262d5b --- /dev/null +++ b/Documentation/video4linux/cx2341x/fw-dma.txt @@ -0,0 +1,94 @@ +This page describes the structures and procedures used by the cx2341x DMA +engine. + +Introduction +============ + +The cx2341x PCI interface is busmaster capable. This means it has a DMA +engine to efficiently transfer large volumes of data between the card and main +memory without requiring help from a CPU. Like most hardware, it must operate +on contiguous physical memory. This is difficult to come by in large quantities +on virtual memory machines. + +Therefore, it also supports a technique called "scatter-gather". The card can +transfer multiple buffers in one operation. Instead of allocating one large +contiguous buffer, the driver can allocate several smaller buffers. + +In practice, I've seen the average transfer to be roughly 80K, but transfers +above 128K were not uncommon, particularly at startup. The 128K figure is +important, because that is the largest block that the kernel can normally +allocate. Even still, 128K blocks are hard to come by, so the driver writer is +urged to choose a smaller block size and learn the scatter-gather technique. + +Mailbox #10 is reserved for DMA transfer information. + +Flow +==== + +This section describes, in general, the order of events when handling DMA +transfers. Detailed information follows this section. + +- The card raises the Encoder interrupt. +- The driver reads the transfer type, offset and size from Mailbox #10. +- The driver constructs the scatter-gather array from enough free dma buffers + to cover the size. +- The driver schedules the DMA transfer via the ScheduleDMAtoHost API call. +- The card raises the DMA Complete interrupt. +- The driver checks the DMA status register for any errors. +- The driver post-processes the newly transferred buffers. + +NOTE! It is possible that the Encoder and DMA Complete interrupts get raised < |