From 21017aa52663e86d7695c073a8c0a7ad3781efb7 Mon Sep 17 00:00:00 2001
From: rik <rik@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Tue, 12 Feb 2002 15:59:32 +0000
Subject: [PATCH] this file obsoletes zoran.h and contains the Recommended
 interface definition for zr devices

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4670 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 libvo/videodev_mjpeg.h | 118 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 libvo/videodev_mjpeg.h

diff --git a/libvo/videodev_mjpeg.h b/libvo/videodev_mjpeg.h
new file mode 100644
index 0000000000..68fd79c576
--- /dev/null
+++ b/libvo/videodev_mjpeg.h
@@ -0,0 +1,118 @@
+/* These are the MJPEG API extensions for the Video4Linux API,
+   first introduced by the Iomega Buz driver by Rainer Johanni 
+   <rainer@johanni.de>
+*/
+
+/* This is identical with the mgavideo internal params struct, 
+   please tell me if you change this struct here ! <gz@lysator.liu.se) */
+struct mjpeg_params
+{
+
+   /* The following parameters can only be queried */
+
+   int major_version;            /* Major version number of driver */
+   int minor_version;            /* Minor version number of driver */
+
+   /* Main control parameters */
+
+   int input;                    /* Input channel: 0 = Composite, 1 = S-VHS */
+   int norm;                     /* Norm: VIDEO_MODE_PAL or VIDEO_MODE_NTSC */
+   int decimation;               /* decimation of captured video,
+                                    enlargement of video played back.
+                                    Valid values are 1, 2, 4 or 0.
+                                    0 is a special value where the user
+                                    has full control over video scaling */
+
+   /* The following parameters only have to be set if decimation==0,
+      for other values of decimation they provide the data how the image is captured */
+
+   int HorDcm;                    /* Horizontal decimation: 1, 2 or 4 */
+   int VerDcm;                    /* Vertical decimation: 1 or 2 */
+   int TmpDcm;                    /* Temporal decimation: 1 or 2,
+                                     if TmpDcm==2 in capture every second frame is dropped,
+                                     in playback every frame is played twice */
+   int field_per_buff;            /* Number of fields per buffer: 1 or 2 */
+   int img_x;                     /* start of image in x direction */
+   int img_y;                     /* start of image in y direction */
+   int img_width;                 /* image width BEFORE decimation,
+                                     must be a multiple of HorDcm*16 */
+   int img_height;                /* image height BEFORE decimation,
+                                     must be a multiple of VerDcm*8 */
+
+   /* --- End of parameters for decimation==0 only --- */
+
+   /* JPEG control parameters */
+
+   int  quality;                  /* Measure for quality of compressed images.
+                                     Scales linearly with the size of the compressed images.
+                                     Must be beetween 0 and 100, 100 is a compression
+                                     ratio of 1:4 */
+
+   int  odd_even;                 /* Which field should come first ???
+                                     This is more aptly named "top_first",
+                                     i.e. (odd_even==1) --> top-field-first */
+
+   int  APPn;                     /* Number of APP segment to be written, must be 0..15 */
+   int  APP_len;                  /* Length of data in JPEG APPn segment */
+   char APP_data[60];             /* Data in the JPEG APPn segment. */
+
+   int  COM_len;                  /* Length of data in JPEG COM segment */
+   char COM_data[60];             /* Data in JPEG COM segment */
+
+   unsigned long jpeg_markers;    /* Which markers should go into the JPEG output.
+                                     Unless you exactly know what you do, leave them untouched.
+                                     Inluding less markers will make the resulting code
+                                     smaller, but there will be fewer aplications
+                                     which can read it.
+                                     The presence of the APP and COM marker is
+                                     influenced by APP0_len and COM_len ONLY! */
+#define JPEG_MARKER_DHT (1<<3)    /* Define Huffman Tables */
+#define JPEG_MARKER_DQT (1<<4)    /* Define Quantization Tables */
+#define JPEG_MARKER_DRI (1<<5)    /* Define Restart Interval */
+#define JPEG_MARKER_COM (1<<6)    /* Comment segment */
+#define JPEG_MARKER_APP (1<<7)    /* App segment, driver will allways use APP0 */
+
+   int  VFIFO_FB;                 /* Flag for enabling Video Fifo Feedback.
+                                     If this flag is turned on and JPEG decompressing
+                                     is going to the screen, the decompress process
+                                     is stopped every time the Video Fifo is full.
+                                     This enables a smooth decompress to the screen
+                                     but the video output signal will get scrambled */
+
+   /* Misc */
+
+	char reserved[312];  /* Makes 512 bytes for this structure */
+};
+
+struct mjpeg_requestbuffers
+{
+   unsigned long count;      /* Number of buffers for MJPEG grabbing */
+   unsigned long size;       /* Size PER BUFFER in bytes */
+};
+
+struct mjpeg_sync
+{
+   unsigned long frame;      /* Frame (0 - n) for double buffer */
+   unsigned long length;     /* number of code bytes in buffer (capture only) */
+   unsigned long seq;        /* frame sequence number */
+   struct timeval timestamp; /* timestamp */
+};
+
+struct mjpeg_status
+{
+   int input;                /* Input channel, has to be set prior to BUZIOC_G_STATUS */
+   int signal;               /* Returned: 1 if valid video signal detected */
+   int norm;                 /* Returned: VIDEO_MODE_PAL or VIDEO_MODE_NTSC */
+   int color;                /* Returned: 1 if color signal detected */
+};
+
+/*
+Private IOCTL to set up for displaying MJPEG
+*/
+#define MJPIOC_G_PARAMS       _IOR ('v', BASE_VIDIOCPRIVATE+0,  struct mjpeg_params)
+#define MJPIOC_S_PARAMS       _IOWR('v', BASE_VIDIOCPRIVATE+1,  struct mjpeg_params)
+#define MJPIOC_REQBUFS        _IOWR('v', BASE_VIDIOCPRIVATE+2,  struct mjpeg_requestbuffers)
+#define MJPIOC_QBUF_CAPT      _IOW ('v', BASE_VIDIOCPRIVATE+3,  int)
+#define MJPIOC_QBUF_PLAY      _IOW ('v', BASE_VIDIOCPRIVATE+4,  int)
+#define MJPIOC_SYNC           _IOR ('v', BASE_VIDIOCPRIVATE+5,  struct mjpeg_sync)
+#define MJPIOC_G_STATUS       _IOWR('v', BASE_VIDIOCPRIVATE+6,  struct mjpeg_status)