--- /dev/null
+/*
+ * interface to the v4l driver
+ *
+ * (c) 1997-99 Gerd Knorr <kraxel@goldbach.in-berlin.de>
+ *
+ */
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <math.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <signal.h>
+#include <endian.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+#include <X11/Intrinsic.h>
+
+#include <asm/types.h> /* XXX glibc */
+#include <linux/videodev.h>
+
+#include "grab.h"
+
+#define SYNC_TIMEOUT 1
+
+/* ---------------------------------------------------------------------- */
+
+/* experimental, interface might change */
+#ifndef VIDIOCSWIN2
+#define VIDIOCSWIN2 _IOW('v',28,struct video_window2)
+struct video_window2
+{
+ __u16 palette; /* Palette (aka video format) in use */
+ __u32 start; /* start address, relative to video_buffer.base */
+ __u32 pitch;
+ __u32 width;
+ __u32 height;
+ __u32 flags;
+
+ struct video_clip *clips;
+ int clipcount;
+};
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+/* open+close */
+static int grab_open(struct GRABBER *grab_v4l, char *filename);
+static int grab_close(struct GRABBER *grab_v4l);
+
+/* overlay */
+static int grab_setupfb(struct GRABBER *grab_v4l, int sw, int sh, int format, void *base, int width);
+static int grab_overlay(struct GRABBER *grab_v4l, int x, int y, int width, int height, int format,
+ OverlayClip *oc, int count);
+static int grab_offscreen(struct GRABBER *grab_v4l, int start, int pitch, int width, int height,
+ int format);
+
+/* capture */
+static int grab_mm_setparams(struct GRABBER *grab_v4l, int format, int *width, int *height,
+ int *linelength);
+static void* grab_mm_capture(struct GRABBER *grab_v4l, int single);
+static void grab_mm_cleanup(struct GRABBER *grab_v4l);
+static int grab_read_setparams(struct GRABBER *grab_v4l, int format, int *width, int *height,
+ int *linelength);
+static void* grab_read_capture(struct GRABBER *grab_v4l, int single);
+static void grab_read_cleanup(struct GRABBER *grab_v4l);
+
+/* control */
+static int grab_tune(struct GRABBER *grab_v4l, unsigned long freq);
+static int grab_tuned(struct GRABBER *grab_v4l);
+static int grab_input(struct GRABBER *grab_v4l, int input, int norm);
+static int grab_hasattr(struct GRABBER *grab_v4l, int id);
+static int grab_getattr(struct GRABBER *grab_v4l, int id);
+static int grab_setattr(struct GRABBER *grab_v4l, int id, int val);
+
+/* internal helpers */
+static int grab_wait(struct GRABBER *grab_v4l, struct video_mmap *gb);
+
+/* ---------------------------------------------------------------------- */
+
+static const char *device_cap[] = {
+ "capture", "tuner", "teletext", "overlay", "chromakey", "clipping",
+ "frameram", "scales", "monochrome", NULL
+};
+
+static const char *device_pal[] = {
+ "-", "grey", "hi240", "rgb16", "rgb24", "rgb32", "rgb15",
+ "yuv422", "yuyv", "uyvy", "yuv420", "yuv411", "raw",
+ "yuv422p", "yuv411p", "yuv420p", "yuv410p"
+};
+#define PALETTE(x) ((x < sizeof(device_pal)/sizeof(char*)) ? device_pal[x] : "UNKNOWN")
+
+static const struct STRTAB stereo[] = {
+ { 0, "auto" },
+ { 1, "mono" },
+ { 2, "stereo" },
+ { 4, "lang1" },
+ { 8, "lang2" },
+ { -1, NULL, },
+ };
+static struct STRTAB norms[] = {
+ { 0, "PAL" },
+ { 1, "NTSC" },
+ { 2, "SECAM" },
+ { 3, "AUTO" },
+ { -1, NULL }
+ };
+static const struct STRTAB norms_bttv[] = {
+ { 0, "PAL" },
+ { 1, "NTSC" },
+ { 2, "SECAM" },
+ { 3, "PAL-NC" },
+ { 4, "PAL-M" },
+ { 5, "PAL-N" },
+ { 6, "NTSC-JP" },
+ { -1, NULL }
+ };
+static int gb_pal[] = {
+ 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0
+};
+
+static const unsigned short format2palette[] = {
+ 0,/* unused */
+ VIDEO_PALETTE_HI240,/* RGB8 */
+ VIDEO_PALETTE_GREY,/* GRAY8 */
+#if __BYTE_ORDER == __BIG_ENDIAN
+ 0,
+ 0,
+ VIDEO_PALETTE_RGB555,/* RGB15_BE */
+ VIDEO_PALETTE_RGB565,/* RGB16_BE */
+ 0,
+ 0,
+ VIDEO_PALETTE_RGB24,/* RGB24 */
+ VIDEO_PALETTE_RGB32,/* RGB32 */
+#else
+ VIDEO_PALETTE_RGB555,/* RGB15_LE */
+ VIDEO_PALETTE_RGB565,/* RGB16_LE */
+ 0,
+ 0,
+ VIDEO_PALETTE_RGB24,/* BGR24 */
+ VIDEO_PALETTE_RGB32,/* BGR32 */
+ 0,
+ 0,
+#endif
+ 0, /* LUT 2 */
+ 0, /* LUT 4 */
+ VIDEO_PALETTE_YUV422, /* YUV422 */
+ VIDEO_PALETTE_YUV422P, /* YUV422P */
+ VIDEO_PALETTE_YUV420P, /* YUV420P */
+};
+
+static const unsigned int format2depth[] = {
+ 0, /* unused */
+ 8, /* RGB8 */
+ 8, /* GRAY8 */
+ 16, /* RGB15 LE */
+ 16, /* RGB16 LE */
+ 16, /* RGB15 BE */
+ 16, /* RGB16 BE */
+ 24, /* BGR24 */
+ 32, /* BGR32 */
+ 24, /* RGB24 */
+ 32, /* RGB32 */
+ 16, /* LUT2 */
+ 32, /* LUT4 */
+ 16, /* YUV422 */
+ 16, /* YUV422P */
+ 12, /* YUV420P */
+ 0, /* MJPEG */
+};
+
+static const unsigned char* format_desc[] = {
+ "",
+ "8 bit PseudoColor (dithering)",
+ "8 bit StaticGray",
+ "15 bit TrueColor (LE)",
+ "16 bit TrueColor (LE)",
+ "15 bit TrueColor (BE)",
+ "16 bit TrueColor (BE)",
+ "24 bit TrueColor (LE: bgr)",
+ "32 bit TrueColor (LE: bgr-)",
+ "24 bit TrueColor (BE: rgb)",
+ "32 bit TrueColor (BE: -rgb)",
+ "16 bit TrueColor (lut)",
+ "32 bit TrueColor (lut)",
+ "16 bit YUV 4:2:2",
+ "16 bit YUV 4:2:2 (planar)",
+ "12 bit YUV 4:2:0 (planar)",
+ "MJPEG"
+};
+
+
+/* pass 0/1 by reference */
+static const int one = 1, zero = 0;
+
+/* ---------------------------------------------------------------------- */
+static const struct GRAB_ATTR init_grab_attr[] =
+ {
+ { GRAB_ATTR_VOLUME, 1, VIDIOCGAUDIO, VIDIOCSAUDIO, NULL },
+ { GRAB_ATTR_MUTE, 1, VIDIOCGAUDIO, VIDIOCSAUDIO, NULL },
+ { GRAB_ATTR_MODE, 1, VIDIOCGAUDIO, VIDIOCSAUDIO, NULL },
+
+ { GRAB_ATTR_COLOR, 1, VIDIOCGPICT, VIDIOCSPICT, NULL },
+ { GRAB_ATTR_BRIGHT, 1, VIDIOCGPICT, VIDIOCSPICT, NULL },
+ { GRAB_ATTR_HUE, 1, VIDIOCGPICT, VIDIOCSPICT, NULL },
+ { GRAB_ATTR_CONTRAST, 1, VIDIOCGPICT, VIDIOCSPICT, NULL },
+ };
+
+struct GRABBER *grab_init()
+{
+ struct GRABBER *new_grabber;
+
+ new_grabber = malloc(sizeof(struct GRABBER));
+
+ new_grabber->name = "v4l";
+ new_grabber->flags = 0;
+ new_grabber->norms = norms;
+ new_grabber->inputs = NULL;
+ new_grabber->opened = 0;
+ new_grabber->fd = -1;
+ new_grabber->overlay = 0;
+ new_grabber->audio_modes = stereo;
+ new_grabber->grab_open = grab_open;
+ new_grabber->grab_close = grab_close;
+ new_grabber->grab_setupfb = grab_setupfb;
+ new_grabber->grab_overlay = NULL;
+ new_grabber->grab_offscreen = NULL;
+ new_grabber->grab_setparams = NULL;
+ new_grabber->grab_capture = NULL;
+ new_grabber->grab_cleanup = NULL;
+ new_grabber->grab_tune = grab_tune;
+ new_grabber->grab_tuned = grab_tuned;
+ new_grabber->grab_input = grab_input;
+ new_grabber->grab_hasattr = grab_hasattr;
+ new_grabber->grab_getattr = grab_getattr;
+ new_grabber->grab_setattr = grab_setattr;
+
+ memcpy(new_grabber->grab_attr, init_grab_attr, sizeof(init_grab_attr));
+
+ new_grabber->grab_attr[0].arg = &new_grabber->audio;
+ new_grabber->grab_attr[1].arg = &new_grabber->audio;
+ new_grabber->grab_attr[2].arg = &new_grabber->audio;
+ new_grabber->grab_attr[3].arg = &new_grabber->pict;
+ new_grabber->grab_attr[4].arg = &new_grabber->pict;
+ new_grabber->grab_attr[5].arg = &new_grabber->pict;
+ new_grabber->grab_attr[6].arg = &new_grabber->pict;
+
+ return new_grabber;
+}
+
+/* FIXME this isn't used (yet?)
+static void grab_cleanup(struct GRABBER *grab_v4l)
+{
+}
+*/
+
+static int grab_open(struct GRABBER *grab_v4l, char *filename)
+{
+ int i;
+
+ if (-1 != grab_v4l->fd)
+ goto err;
+
+ if (-1 == (grab_v4l->fd = open(filename ? filename : "/dev/video",O_RDWR))) {
+ fprintf(stderr,"v4l: open %s: %s\n",
+ filename ? filename : "/dev/video",strerror(errno));
+ goto err;
+ }
+
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCGCAP,&grab_v4l->capability)) {
+ perror("v4l: open\n");
+ goto err;
+ }
+
+ fprintf(stderr, "v4l: open\n");
+
+ fcntl(grab_v4l->fd,F_SETFD,FD_CLOEXEC);
+
+ fprintf(stderr,"v4l: device is %s\n",grab_v4l->capability.name);
+
+ sprintf(grab_v4l->name = malloc(strlen(grab_v4l->capability.name)+8),
+ "v4l: %s",grab_v4l->capability.name);
+
+ fprintf(stderr,"v4l: capabilities: ");
+ for (i = 0; device_cap[i] != NULL; i++)
+ if (grab_v4l->capability.type & (1 << i))
+ fprintf(stderr," %s",device_cap[i]);
+ fprintf(stderr,"\n");
+
+ /* input sources */
+ fprintf(stderr,"v4l: channels: %d\n",grab_v4l->capability.channels);
+
+ grab_v4l->channels = malloc(sizeof(struct video_channel)*grab_v4l->capability.channels);
+ memset(grab_v4l->channels,0,sizeof(struct video_channel)*grab_v4l->capability.channels);
+
+ grab_v4l->inputs = malloc(sizeof(struct STRTAB)*(grab_v4l->capability.channels+1));
+ memset(grab_v4l->inputs,0,sizeof(struct STRTAB)*(grab_v4l->capability.channels+1));
+
+ for (i = 0; i < grab_v4l->capability.channels; i++) {
+ grab_v4l->channels[i].channel = i;
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCGCHAN,&grab_v4l->channels[i]))
+ perror("v4l: ioctl VIDIOCGCHAN"), exit(0);
+ grab_v4l->inputs[i].nr = i;
+ grab_v4l->inputs[i].str = grab_v4l->channels[i].name;
+ fprintf(stderr,"v4l: %s: %d %s%s %s%s\n",
+ grab_v4l->channels[i].name,
+ grab_v4l->channels[i].tuners,
+ (grab_v4l->channels[i].flags & VIDEO_VC_TUNER) ? "tuner " : "",
+ (grab_v4l->channels[i].flags & VIDEO_VC_AUDIO) ? "audio " : "",
+ (grab_v4l->channels[i].type & VIDEO_TYPE_TV) ? "tv " : "",
+ (grab_v4l->channels[i].type & VIDEO_TYPE_CAMERA) ? "camera " : "");
+ }
+ grab_v4l->inputs[i].nr = -1;
+ grab_v4l->inputs[i].str = NULL;
+
+ /* ioctl probe, switch to input 0 */
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCSCHAN,&grab_v4l->channels[0])) {
+ fprintf(stderr,"v4l: you need a newer bttv version (>= 0.5.14)\n");
+ goto err;
+ }
+
+ /* audios */
+ fprintf(stderr,"v4l: audios : %d\n",grab_v4l->capability.audios);
+
+ if (grab_v4l->capability.audios) {
+ grab_v4l->audio.audio = 0;
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCGAUDIO,&grab_v4l->audio))
+ perror("v4l: ioctl VIDIOCGCAUDIO") /* , exit(0) */ ;
+ fprintf(stderr,"v4l: %d (%s): ",i,grab_v4l->audio.name);
+ if (grab_v4l->audio.flags & VIDEO_AUDIO_MUTABLE)
+ fprintf(stderr,"muted=%s ",
+ (grab_v4l->audio.flags&VIDEO_AUDIO_MUTE) ? "yes":"no");
+ if (grab_v4l->audio.flags & VIDEO_AUDIO_VOLUME)
+ fprintf(stderr,"volume=%d ",grab_v4l->audio.volume);
+ if (grab_v4l->audio.flags & VIDEO_AUDIO_BASS)
+ fprintf(stderr,"bass=%d ",grab_v4l->audio.bass);
+ if (grab_v4l->audio.flags & VIDEO_AUDIO_TREBLE)
+ fprintf(stderr,"treble=%d ",grab_v4l->audio.treble);
+ fprintf(stderr,"\n");
+
+ if (!(grab_v4l->audio.flags & VIDEO_AUDIO_VOLUME)) {
+ grab_v4l->grab_attr[0].have = 0; /* volume */
+ }
+ } else {
+ grab_v4l->grab_attr[0].have = 0; /* volume */
+ grab_v4l->grab_attr[1].have = 0; /* mute */
+ grab_v4l->grab_attr[2].have = 0; /* audio mode */
+ }
+
+ fprintf(stderr,"v4l: size : %dx%d => %dx%d\n",
+ grab_v4l->capability.minwidth,grab_v4l->capability.minheight,
+ grab_v4l->capability.maxwidth,grab_v4l->capability.maxheight);
+
+ /* tuner (more than one???) */
+ if (grab_v4l->capability.type & VID_TYPE_TUNER) {
+ grab_v4l->tuner = malloc(sizeof(struct video_tuner));
+ memset(grab_v4l->tuner,0,sizeof(struct video_tuner));
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCGTUNER,grab_v4l->tuner))
+ perror("v4l: ioctl VIDIOCGTUNER");
+ fprintf(stderr,"v4l: tuner : %s %lu-%lu",
+ grab_v4l->tuner->name,grab_v4l->tuner->rangelow,grab_v4l->tuner->rangehigh);
+ for (i = 0; norms[i].str != NULL; i++) {
+ if (grab_v4l->tuner->flags & (1<<i)) {
+ fprintf(stderr," %s",norms[i].str);
+ } else
+ norms[i].nr = -1;
+ }
+ fprintf(stderr,"\n");
+ } else {
+ struct video_channel vchan;
+
+ memcpy(&vchan, &grab_v4l->channels[0], sizeof(struct video_channel));
+ for (i = 0; norms[i].str != NULL; i++) {
+ vchan.norm = i;
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCSCHAN,&vchan))
+ norms[i].nr = -1;
+ fprintf(stderr," %s",norms[i].str);
+ }
+ fprintf(stderr,"\n");
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCSCHAN,&grab_v4l->channels[0])) {
+ fprintf(stderr,"v4l: you need a newer bttv version (>= 0.5.14)\n");
+ goto err;
+ }
+ grab_v4l->grab_tune = NULL;
+ grab_v4l->grab_tuned = NULL;
+ }
+#if 1
+#define BTTV_VERSION _IOR('v' , BASE_VIDIOCPRIVATE+6, int)
+ /* dirty hack time / v4l design flaw -- works with bttv only
+ * this adds support for a few less common PAL versions */
+ if (-1 != ioctl(grab_v4l->fd,BTTV_VERSION,0)) {
+ grab_v4l->norms = norms_bttv;
+ }
+#endif
+
+ /* frame buffer */
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCGFBUF,&grab_v4l->ov_fbuf))
+ perror("v4l: ioctl VIDIOCGFBUF");
+ fprintf(stderr,"v4l: fbuffer : base=0x%p size=%dx%d depth=%d bpl=%d\n",
+ grab_v4l->ov_fbuf.base, grab_v4l->ov_fbuf.width, grab_v4l->ov_fbuf.height,
+ grab_v4l->ov_fbuf.depth, grab_v4l->ov_fbuf.bytesperline);
+
+ /* picture parameters */
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCGPICT,&grab_v4l->pict))
+ perror("v4l: ioctl VIDIOCGPICT");
+
+ fprintf(stderr,
+ "v4l: picture : brightness=%d hue=%d colour=%d contrast=%d\n",
+ grab_v4l->pict.brightness, grab_v4l->pict.hue, grab_v4l->pict.colour, grab_v4l->pict.contrast);
+ fprintf(stderr,
+ "v4l: picture : whiteness=%d depth=%d palette=%s\n",
+ grab_v4l->pict.whiteness, grab_v4l->pict.depth, PALETTE(grab_v4l->pict.palette));
+
+ /* map grab buffer */
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCGMBUF,&grab_v4l->gb_buffers)) {
+ perror("v4l: ioctl VIDIOCGMBUF");
+ }
+ grab_v4l->map = mmap(0,grab_v4l->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_SHARED,grab_v4l->fd,0);
+ if ((char*)-1 != grab_v4l->map) {
+ grab_v4l->grab_setparams = grab_mm_setparams;
+ grab_v4l->grab_capture = grab_mm_capture;
+ grab_v4l->grab_cleanup = grab_mm_cleanup;
+ } else {
+ perror("v4l: mmap");
+ grab_v4l->grab_setparams = grab_read_setparams;
+ grab_v4l->grab_capture = grab_read_capture;
+ grab_v4l->grab_cleanup = grab_read_cleanup;
+ }
+ grab_v4l->opened = 1;
+
+ return grab_v4l->fd;
+
+ err:
+ if (grab_v4l->fd != -1) {
+ close(grab_v4l->fd);
+ grab_v4l->fd = -1;
+ }
+ return -1;
+}
+
+static int
+ grab_close(struct GRABBER *grab_v4l)
+{
+ if (-1 == grab_v4l->fd)
+ return 0;
+
+ if (grab_v4l->gb_grab > grab_v4l->gb_sync)
+ grab_wait(grab_v4l, grab_v4l->even ? &grab_v4l->gb_even : &grab_v4l->gb_odd);
+
+ if ((char*)-1 != grab_v4l->map)
+ munmap(grab_v4l->map,grab_v4l->gb_buffers.size);
+
+ fprintf(stderr, "v4l: close\n");
+
+ close(grab_v4l->fd);
+ grab_v4l->fd = -1;
+ grab_v4l->opened = 0;
+ return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+/* do overlay */
+
+static int
+ grab_setupfb(struct GRABBER *grab_v4l, int sw, int sh, int format, void *base, int bpl)
+{
+ int settings_ok = 1;
+ grab_v4l->swidth = sw;
+ grab_v4l->sheight = sh;
+
+ /* double-check settings */
+ fprintf(stderr,"v4l: %dx%d, %d bit/pixel, %d byte/scanline\n",
+ grab_v4l->ov_fbuf.width,grab_v4l->ov_fbuf.height,
+ grab_v4l->ov_fbuf.depth,grab_v4l->ov_fbuf.bytesperline);
+ if ((bpl > 0 && grab_v4l->ov_fbuf.bytesperline != bpl) ||
+ (grab_v4l->ov_fbuf.width != sw) ||
+ (grab_v4l->ov_fbuf.height != sh)) {
+ fprintf(stderr,"v4l: WARNING: v4l and dga disagree about the screen size\n");
+ fprintf(stderr,"v4l: WARNING: Is v4l-conf installed correctly?\n");
+ settings_ok = 0;
+ }
+ if (format2depth[format] != ((grab_v4l->ov_fbuf.depth+7)&0xf8)) {
+ fprintf(stderr,"v4l: WARNING: v4l and dga disagree about the color depth\n");
+ fprintf(stderr,"v4l: WARNING: Is v4l-conf installed correctly?\n");
+ fprintf(stderr,"%d %d\n",format2depth[format],grab_v4l->ov_fbuf.depth);
+ settings_ok = 0;
+ }
+ if (settings_ok) {
+ grab_v4l->grab_overlay = grab_overlay;
+ grab_v4l->grab_offscreen = grab_offscreen;
+ return 0;
+ } else {
+ fprintf(stderr,"v4l: WARNING: overlay mode disabled\n");
+ return -1;
+ }
+}
+
+static int
+ grab_overlay(struct GRABBER *grab_v4l, int x, int y, int width, int height, int format,
+ OverlayClip *oc, int count)
+ {
+ int i,xadjust=0,yadjust=0;
+
+ //fprintf(stderr,"v4l: overlay %d %d\n", x, y);
+
+ if (width == 0 || height == 0) {
+ //fprintf(stderr,"v4l: overlay off\n");
+ ioctl(grab_v4l->fd, VIDIOCCAPTURE, &zero);
+ grab_v4l->overlay = 0;
+ return 0;
+ }
+
+ grab_v4l->ov_win.x = x;
+ grab_v4l->ov_win.y = y;
+ grab_v4l->ov_win.width = width;
+ grab_v4l->ov_win.height = height;
+ grab_v4l->ov_win.flags = 0;
+
+ /* check against max. size */
+ ioctl(grab_v4l->fd,VIDIOCGCAP,&grab_v4l->capability);
+ if (grab_v4l->ov_win.width > grab_v4l->capability.maxwidth) {
+ grab_v4l->ov_win.width = grab_v4l->capability.maxwidth;
+ grab_v4l->ov_win.x += (width - grab_v4l->ov_win.width)/2;
+ }
+ if (grab_v4l->ov_win.height > grab_v4l->capability.maxheight) {
+ grab_v4l->ov_win.height = grab_v4l->capability.maxheight;
+ grab_v4l->ov_win.y += (height - grab_v4l->ov_win.height)/2;
+ }
+
+ /* pass aligned values -- the driver does'nt get it right yet */
+ grab_v4l->ov_win.width &= ~3;
+ grab_v4l->ov_win.height &= ~3;
+ grab_v4l->ov_win.x &= ~3;
+ if (grab_v4l->ov_win.x < x) grab_v4l->ov_win.x += 4;
+ if (grab_v4l->ov_win.x+grab_v4l->ov_win.width > x+width) grab_v4l->ov_win.width -= 4;
+
+ /* fixups */
+ xadjust = grab_v4l->ov_win.x - x;
+ yadjust = grab_v4l->ov_win.y - y;
+
+ if (grab_v4l->capability.type & VID_TYPE_CLIPPING) {
+ grab_v4l->ov_win.clips = grab_v4l->ov_clips;
+ grab_v4l->ov_win.clipcount = count;
+
+ for (i = 0; i < count; i++) {
+ grab_v4l->ov_clips[i].x = oc[i].x1 - xadjust;
+ grab_v4l->ov_clips[i].y = oc[i].y1 - yadjust;
+ grab_v4l->ov_clips[i].width = oc[i].x2-oc[i].x1 /* XXX */;
+ grab_v4l->ov_clips[i].height = oc[i].y2-oc[i].y1;
+ //fprintf(stderr,"v4l: clip=%dx%d+%d+%d\n",
+ //grab_v4l->ov_clips[i].width,grab_v4l->ov_clips[i].height,
+ //grab_v4l->ov_clips[i].x,grab_v4l->ov_clips[i].y);
+ }
+ }
+ if (grab_v4l->capability.type & VID_TYPE_CHROMAKEY) {
+ grab_v4l->ov_win.chromakey = 0; /* XXX */
+ }
+ if (-1 == ioctl(grab_v4l->fd, VIDIOCSWIN, &grab_v4l->ov_win))
+ perror("v4l: ioctl VIDIOCSWIN");
+
+ if (!grab_v4l->overlay) {
+ grab_v4l->pict.palette =
+ (format < sizeof(format2palette)/sizeof(unsigned short))?
+ format2palette[format]: 0;
+ if(grab_v4l->pict.palette == 0) {
+ fprintf(stderr,"v4l: unsupported overlay video format: %s\n",
+ format_desc[format]);
+ return -1;
+ }
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCSPICT,&grab_v4l->pict))
+ perror("v4l: ioctl VIDIOCSPICT");
+ if (-1 == ioctl(grab_v4l->fd, VIDIOCCAPTURE, &one))
+ perror("v4l: ioctl VIDIOCCAPTURE");
+ grab_v4l->overlay = 1;
+ }
+
+ //fprintf(stderr,"v4l: overlay win=%dx%d+%d+%d, %d clips\n",
+ // width,height,x,y, count);
+
+ return 0;
+ }
+
+static int
+ grab_offscreen(struct GRABBER *grab_v4l, int start, int pitch, int width, int height, int format)
+{
+ struct video_window2 vo;
+
+ if (width == 0 || height == 0) {
+ fprintf(stderr,"v4l: offscreen off\n");
+ ioctl(grab_v4l->fd, VIDIOCCAPTURE, &zero);
+ grab_v4l->overlay = 0;
+ return 0;
+ }
+
+ vo.palette = VIDEO_PALETTE_YUV422; /* FIXME */
+ vo.start = start;
+ vo.pitch = pitch;
+ vo.width = width;
+ vo.height = height;
+ vo.flags = 0;
+ vo.clips = NULL;
+ vo.clipcount = 0;
+
+ if (-1 == ioctl(grab_v4l->fd_grab,VIDIOCSWIN2,&vo))
+ perror("v4l: ioctl VIDIOCSOFFSCREEN");
+ if (-1 == ioctl(grab_v4l->fd_grab,VIDIOCCAPTURE,&one))
+ perror("v4l: ioctl VIDIOCCAPTURE");
+ fprintf(stderr,"v4l: offscreen size=%dx%d\n",
+ width,height);
+ return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+/* capture using mmaped buffers (with double-buffering, ...) */
+
+static int
+ grab_queue(struct GRABBER *grab_v4l, struct video_mmap *gb, int probe)
+{
+ //fprintf(stderr,"g%d",gb->frame);
+#if 0
+ /* might be useful for debugging driver problems */
+ memset(map + grab_v4l->gb_buffers.offsets[gb->frame],0,
+ grab_v4l->gb_buffers.size/grab_v4l->gb_buffers.frames);
+#endif
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCMCAPTURE,gb)) {
+ if (errno == EAGAIN)
+ fprintf(stderr,"v4l: grabber chip can't sync (no station tuned in?)\n");
+ else
+ if (!probe)
+ fprintf(stderr,"v4l: ioctl VIDIOCMCAPTURE(%d,%s,%dx%d): %s\n",
+ gb->frame,PALETTE(gb->format),gb->width,gb->height,
+ strerror(errno));
+ return -1;
+ }
+ //fprintf(stderr,"* ");
+ grab_v4l->gb_grab++;
+ return 0;
+}
+
+static int
+ grab_wait(struct GRABBER *grab_v4l, struct video_mmap *gb)
+{
+ int ret = 0;
+
+ //alarm(SYNC_TIMEOUT);
+ //fprintf(stderr,"s%d",gb->frame);
+
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCSYNC,&(gb->frame))) {
+ //perror("v4l: ioctl VIDIOCSYNC");
+ ret = -1;
+ }
+ grab_v4l->gb_sync++;
+ //fprintf(stderr,"* ");
+ //alarm(0);
+ return ret;
+}
+
+static int
+ grab_probe(struct GRABBER *grab_v4l, int format)
+{
+ struct video_mmap gb;
+
+ if (0 != gb_pal[format])
+ goto done;
+
+ gb.frame = 0;
+ gb.width = 64;
+ gb.height = 48;
+
+ fprintf(stderr, "v4l: capture probe %s...\t", device_pal[format]);
+ gb.format = format;
+ if (-1 == grab_queue(grab_v4l, &gb,1)) {
+ gb_pal[format] = 2;
+ goto done;
+ }
+ if (-1 == grab_wait(grab_v4l, &gb)) {
+ gb_pal[format] = 2;
+ goto done;
+ }
+ gb_pal[format] = 1;
+ fprintf(stderr, "ok\n");
+
+ done:
+ return gb_pal[format] == 1;
+}
+
+static int
+ grab_mm_setparams(struct GRABBER *grab_v4l, int format, int *width, int *height, int *linelength)
+{
+ //if (!grab_v4l->opened) return -1;
+
+ /* finish old stuff */
+ if (grab_v4l->gb_grab > grab_v4l->gb_sync)
+ grab_wait(grab_v4l, grab_v4l->even ? &grab_v4l->gb_even : &grab_v4l->gb_odd);
+
+ /* verify parameters */
+ ioctl(grab_v4l->fd,VIDIOCGCAP,&grab_v4l->capability);
+ if (*width > grab_v4l->capability.maxwidth)
+ *width = grab_v4l->capability.maxwidth;
+ if (*height > grab_v4l->capability.maxheight)
+ *height = grab_v4l->capability.maxheight;
+ *linelength = *width * format2depth[format] / 8;
+
+#if 1
+ /* XXX bttv bug workaround - it returns a larger size than it can handle */
+ if (*width > 768+76) {
+ *width = 768+76;
+ *linelength = *width * format2depth[format] / 8;
+ }
+#endif
+
+ /* initialize everything */
+ grab_v4l->gb_even.format = grab_v4l->gb_odd.format =
+ (format < sizeof(format2palette)/sizeof(unsigned short)) ?
+ format2palette[format] : 0;
+ if (grab_v4l->gb_even.format == 0 || !grab_probe(grab_v4l, grab_v4l->gb_even.format)) {
+ return -1;
+ }
+ grab_v4l->pixmap_bytes = format2depth[format] / 8;
+ grab_v4l->gb_even.frame = 0;
+ grab_v4l->gb_odd.frame = 1;
+ grab_v4l->gb_even.width = *width;
+ grab_v4l->gb_even.height = *height;
+ grab_v4l->gb_odd.width = *width;
+ grab_v4l->gb_odd.height = *height;
+ grab_v4l->even = 0;
+
+ return 0;
+}
+
+static void*
+ grab_mm_capture(struct GRABBER *grab_v4l, int single)
+{
+ void *buf;
+
+ if (!single && grab_v4l->gb_grab == grab_v4l->gb_sync)
+ /* streaming capture started */
+ if (-1 == grab_queue(grab_v4l, grab_v4l->even ? &grab_v4l->gb_even : &grab_v4l->gb_odd,0))
+ return NULL;
+
+ if (single && grab_v4l->gb_grab > grab_v4l->gb_sync)
+ /* clear streaming capture */
+ grab_wait(grab_v4l, grab_v4l->even ? &grab_v4l->gb_even : &grab_v4l->gb_odd);
+
+ /* queue */
+ if (-1 == grab_queue(grab_v4l, grab_v4l->even ? &grab_v4l->gb_odd : &grab_v4l->gb_even,0))
+ return NULL;
+ if (grab_v4l->gb_grab > grab_v4l->gb_sync+1) {
+ /* wait -- streaming */
+ //fprintf(stderr, "v4lsrc: 1 %d %d\n", grab_v4l->gb_grab, gb_sync);
+ grab_wait(grab_v4l, grab_v4l->even ? &grab_v4l->gb_even : &grab_v4l->gb_odd);
+ buf = grab_v4l->map + grab_v4l->gb_buffers.offsets[grab_v4l->even ? 0 : 1];
+ } else {
+ /* wait -- single */
+ //fprintf(stderr, "v4lsrc: 2 %d %d %d\n", grab_v4l->gb_grab, gb_sync, even);
+ grab_wait(grab_v4l, grab_v4l->even ? &grab_v4l->gb_odd : &grab_v4l->gb_even);
+ buf = grab_v4l->map + grab_v4l->gb_buffers.offsets[grab_v4l->even ? 1 : 0];
+ }
+ grab_v4l->even = !grab_v4l->even;
+ //fprintf(stderr, "v4lsrc: even %d\n", even);
+
+ return buf;
+}
+
+static void
+ grab_mm_cleanup(struct GRABBER *grab_v4l)
+{
+ if (grab_v4l->gb_grab > grab_v4l->gb_sync)
+ grab_wait(grab_v4l, grab_v4l->even ? &grab_v4l->gb_even : &grab_v4l->gb_odd);
+}
+
+/* ---------------------------------------------------------------------- */
+/* capture using simple read() */
+
+static int
+ grab_read_setparams(struct GRABBER *grab_v4l, int format, int *width, int *height, int *linelength)
+{
+ struct video_window win;
+
+ grab_v4l->pict.depth = format2depth[format];
+ grab_v4l->pict.palette = format2palette[format];
+
+ /* set format */
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCSPICT,&grab_v4l->pict)) {
+ perror("v4l: ioctl VIDIOCSPICT");
+ return -1;
+ }
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCGPICT,&grab_v4l->pict)) {
+ perror("v4l: ioctl VIDIOCGPICT");
+ return -1;
+ }
+
+ /* set size */
+ ioctl(grab_v4l->fd,VIDIOCGCAP,&grab_v4l->capability);
+ if (*width > grab_v4l->capability.maxwidth)
+ *width = grab_v4l->capability.maxwidth;
+ if (*height > grab_v4l->capability.maxheight)
+ *height = grab_v4l->capability.maxheight;
+ memset(&win,0,sizeof(struct video_window));
+ win.width = *width;
+ win.height = *height;
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCSWIN,&win)) {
+ perror("v4l: ioctl VIDIOCSWIN");
+ return -1;
+ }
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCGWIN,&win)) {
+ perror("v4l: ioctl VIDIOCGWIN");
+ return -1;
+ }
+
+ *width = win.width;
+ *height = win.height;
+ *linelength = *width * format2depth[format] / 8;
+
+ /* alloc buffer */
+ grab_v4l->grab_read_size = *linelength * *height;
+ if (grab_v4l->grab_read_buf)
+ free(grab_v4l->grab_read_buf);
+ grab_v4l->grab_read_buf = malloc(grab_v4l->grab_read_size);
+ if (NULL == grab_v4l->grab_read_buf)
+ return -1;
+
+
+ return 0;
+}
+
+static void*
+grab_read_capture(struct GRABBER *grab_v4l, int single)
+{
+ int rc;
+
+ rc = read(grab_v4l->fd,grab_v4l->grab_read_buf,grab_v4l->grab_read_size);
+ if (grab_v4l->grab_read_size != rc) {
+ fprintf(stderr,"v4l: grabber read error (rc=%d)\n",rc);
+ return NULL;
+ }
+ return grab_v4l->grab_read_buf;
+}
+
+static void
+grab_read_cleanup(struct GRABBER *grab_v4l)
+{
+ if (grab_v4l->grab_read_buf) {
+ free(grab_v4l->grab_read_buf);
+ grab_v4l->grab_read_buf = NULL;
+ }
+}
+
+/* ---------------------------------------------------------------------- */
+
+static int
+ grab_tune(struct GRABBER *grab_v4l, unsigned long freq)
+{
+ freq = freq*16/1000;
+ fprintf(stderr,"v4l: freq: %.3f\n",(float)freq/16);
+ if (-1 == ioctl(grab_v4l->fd, VIDIOCSFREQ, &freq))
+ perror("v4l: ioctl VIDIOCSFREQ");
+ return 0;
+}
+
+static int
+ grab_tuned(struct GRABBER *grab_v4l)
+{
+ usleep(10000);
+ if (-1 == ioctl(grab_v4l->fd,VIDIOCGTUNER,grab_v4l->tuner)) {
+ perror("v4l: ioctl VIDIOCGTUNER");
+ return 0;
+ }
+ return grab_v4l->tuner->signal ? 1 : 0;
+}
+
+static int
+ grab_input(struct GRABBER *grab_v4l, int input, int norm)
+{
+ if (-1 != input) {
+ fprintf(stderr,"v4l: input: %d\n",input);
+ grab_v4l->cur_input = input;
+ }
+ if (-1 != norm) {
+ fprintf(stderr,"v4l: norm : %d\n",norm);
+ grab_v4l->cur_norm = norm;
+ }
+
+ grab_v4l->channels[grab_v4l->cur_input].norm = grab_v4l->cur_norm;
+ if (-1 == ioctl(grab_v4l->fd, VIDIOCSCHAN, &grab_v4l->channels[grab_v4l->cur_input]))
+ perror("v4l: ioctl VIDIOCSCHAN");
+ return 0;
+}
+
+/* ---------------------------------------------------------------------- */
+
+int grab_hasattr(struct GRABBER *grab_v4l, int id)
+{
+ int i;
+
+ for (i = 0; i < NUM_ATTR; i++)
+ if (id == grab_v4l->grab_attr[i].id && grab_v4l->grab_attr[i].have)
+ break;
+ if (i == NUM_ATTR)
+ return 0;
+ return 1;
+}
+
+int grab_getattr(struct GRABBER *grab_v4l, int id)
+{
+ int i;
+
+ for (i = 0; i < NUM_ATTR; i++)
+ if (id == grab_v4l->grab_attr[i].id && grab_v4l->grab_attr[i].have)
+ break;
+ if (i == NUM_ATTR)
+ return -1;
+ if (-1 == ioctl(grab_v4l->fd,grab_v4l->grab_attr[i].get,grab_v4l->grab_attr[i].arg))
+ perror("v4l: ioctl get");
+
+ switch (id) {
+ case GRAB_ATTR_VOLUME: return grab_v4l->audio.volume;
+ case GRAB_ATTR_MUTE: return grab_v4l->audio.flags & VIDEO_AUDIO_MUTE;
+ case GRAB_ATTR_MODE: return grab_v4l->audio.mode;
+ case GRAB_ATTR_COLOR: return grab_v4l->pict.contrast;
+ case GRAB_ATTR_BRIGHT: return grab_v4l->pict.contrast;
+ case GRAB_ATTR_HUE: return grab_v4l->pict.contrast;
+ case GRAB_ATTR_CONTRAST: return grab_v4l->pict.contrast;
+ default: return -1;
+ }
+}
+
+int grab_setattr(struct GRABBER *grab_v4l, int id, int val)
+{
+ int i;
+
+ /* read ... */
+ for (i = 0; i < NUM_ATTR; i++)
+ if (id == grab_v4l->grab_attr[i].id && grab_v4l->grab_attr[i].have)
+ break;
+ if (i == NUM_ATTR)
+ return -1;
+ if (-1 == ioctl(grab_v4l->fd,grab_v4l->grab_attr[i].set,grab_v4l->grab_attr[i].arg))
+ perror("v4l: ioctl get");
+
+ /* ... modify ... */
+ switch (id) {
+ case GRAB_ATTR_VOLUME: grab_v4l->audio.volume = val; break;
+ case GRAB_ATTR_MUTE:
+ if (val)
+ grab_v4l->audio.flags |= VIDEO_AUDIO_MUTE;
+ else
+ grab_v4l->audio.flags &= ~VIDEO_AUDIO_MUTE;
+ break;
+ case GRAB_ATTR_MODE: grab_v4l->audio.mode = val; break;
+ case GRAB_ATTR_COLOR: grab_v4l->pict.colour = val; break;
+ case GRAB_ATTR_BRIGHT: grab_v4l->pict.brightness = val; break;
+ case GRAB_ATTR_HUE: grab_v4l->pict.hue = val; break;
+ case GRAB_ATTR_CONTRAST: grab_v4l->pict.contrast = val; break;
+ default: return -1;
+ }
+
+ /* ... write */
+ if (-1 == ioctl(grab_v4l->fd,grab_v4l->grab_attr[i].set,grab_v4l->grab_attr[i].arg))
+ perror("v4l: ioctl set");
+ return 0;
+}
+
--- /dev/null
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <string.h>
+
+//#define DEBUG_ENABLED
+#include <gstv4lsrc.h>
+
+#include <linux/videodev.h>
+
+static GstElementDetails gst_v4lsrc_details = {
+ "Video (v4l) Source",
+ "Source/Video",
+ "Read from a Video for Linux capture device",
+ VERSION,
+ "Wim Taymans <wim.taymans@tvd.be>",
+ "(C) 2000",
+};
+
+/* V4lSrc signals and args */
+enum {
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum {
+ ARG_0,
+ ARG_WIDTH,
+ ARG_HEIGHT,
+ ARG_FORMAT,
+ ARG_TUNE,
+ ARG_TUNED,
+ ARG_INPUT,
+ ARG_NORM,
+ ARG_VOLUME,
+ ARG_MUTE,
+ ARG_AUDIO_MODE,
+ ARG_COLOR,
+ ARG_BRIGHT,
+ ARG_HUE,
+ ARG_CONTRAST,
+ ARG_DEVICE,
+};
+
+
+static void gst_v4lsrc_class_init (GstV4lSrcClass *klass);
+static void gst_v4lsrc_init (GstV4lSrc *v4lsrc);
+
+static void gst_v4lsrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
+static void gst_v4lsrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
+
+static GstElementStateReturn gst_v4lsrc_change_state (GstElement *element);
+static void gst_v4lsrc_close_v4l (GstV4lSrc *src);
+static gboolean gst_v4lsrc_open_v4l (GstV4lSrc *src);
+
+static GstBuffer* gst_v4lsrc_get (GstPad *pad);
+static GstPadNegotiateReturn gst_v4lsrc_negotiate (GstPad *pad, GstCaps **caps, gpointer *user_data);
+
+static gboolean gst_v4lsrc_sync_parms (GstV4lSrc *v4lsrc);
+
+static GstElementClass *parent_class = NULL;
+////static guint gst_v4lsrc_signals[LAST_SIGNAL] = { 0 };
+
+GType
+gst_v4lsrc_get_type (void)
+{
+ static GType v4lsrc_type = 0;
+
+ if (!v4lsrc_type) {
+ static const GTypeInfo v4lsrc_info = {
+ sizeof(GstV4lSrcClass), NULL,
+ NULL,
+ (GClassInitFunc)gst_v4lsrc_class_init,
+ NULL,
+ NULL,
+ sizeof(GstV4lSrc),
+ 0,
+ (GInstanceInitFunc)gst_v4lsrc_init,
+ NULL
+ };
+ v4lsrc_type = g_type_register_static(GST_TYPE_ELEMENT, "GstV4lSrc", &v4lsrc_info, 0);
+ }
+ return v4lsrc_type;
+}
+
+static void
+gst_v4lsrc_class_init (GstV4lSrcClass *klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass*)klass;
+ gstelement_class = (GstElementClass*)klass;
+
+ parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
+
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_WIDTH,
+ g_param_spec_int("width","width","width",
+ G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HEIGHT,
+ g_param_spec_int("height","height","height",
+ G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FORMAT,
+ g_param_spec_int("format","format","format",
+ G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
+
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TUNE,
+ g_param_spec_ulong("tune","tune","tune",
+ 0,G_MAXULONG,0,G_PARAM_WRITABLE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TUNED,
+ g_param_spec_boolean("tuned","tuned","tuned",
+ TRUE,G_PARAM_READABLE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_INPUT,
+ g_param_spec_int("input","input","input",
+ G_MININT,G_MAXINT,0,G_PARAM_WRITABLE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_NORM,
+ g_param_spec_int("norm","norm","norm",
+ G_MININT,G_MAXINT,0,G_PARAM_WRITABLE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_VOLUME,
+ g_param_spec_int("volume","volume","volume",
+ G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_MUTE,
+ g_param_spec_boolean("mute","mute","mute",
+ TRUE,G_PARAM_READWRITE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_AUDIO_MODE,
+ g_param_spec_int("mode","mode","mode",
+ G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_COLOR,
+ g_param_spec_int("color","color","color",
+ G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BRIGHT,
+ g_param_spec_int("bright","bright","bright",
+ G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HUE,
+ g_param_spec_int("hue","hue","hue",
+ G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CONTRAST,
+ g_param_spec_int("contrast","contrast","contrast",
+ G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE,
+ g_param_spec_string("device","device","device",
+ NULL, G_PARAM_READWRITE)); // CHECKME
+
+ gobject_class->set_property = gst_v4lsrc_set_property;
+ gobject_class->get_property = gst_v4lsrc_get_property;
+
+ gstelement_class->change_state = gst_v4lsrc_change_state;
+}
+
+static void
+gst_v4lsrc_init (GstV4lSrc *v4lsrc)
+{
+ v4lsrc->srcpad = gst_pad_new("src",GST_PAD_SRC);
+ gst_element_add_pad(GST_ELEMENT(v4lsrc),v4lsrc->srcpad);
+
+ gst_pad_set_get_function (v4lsrc->srcpad,gst_v4lsrc_get);
+ gst_pad_set_negotiate_function (v4lsrc->srcpad,gst_v4lsrc_negotiate);
+
+ /* if the destination cannot say what it wants, we give this */
+ v4lsrc->width = 100;
+ v4lsrc->height = 100;
+ v4lsrc->format = 0;
+ v4lsrc->buffer_size = v4lsrc->width * v4lsrc->height * 3;
+ // make a grbber
+ v4lsrc->grabber = grab_init();
+ v4lsrc->device = NULL;
+ v4lsrc->init = TRUE;
+}
+
+static GstPadNegotiateReturn
+gst_v4lsrc_negotiate (GstPad *pad, GstCaps **caps, gpointer *user_data)
+{
+ GstV4lSrc *v4lsrc;
+
+ GST_DEBUG (0, "v4lsrc: negotiate %p\n", user_data);
+
+ v4lsrc = GST_V4LSRC (gst_pad_get_parent (pad));
+
+ if (!*caps) {
+ return GST_PAD_NEGOTIATE_FAIL;
+ }
+ else {
+ gint width, height;
+ gulong format;
+
+ GST_DEBUG (0, "%08lx\n", gst_caps_get_fourcc_int (*caps, "format"));
+
+ width = gst_caps_get_int (*caps, "width");
+ height = gst_caps_get_int (*caps, "height");
+
+ format = gst_caps_get_fourcc_int (*caps, "format");
+
+ g_print ("v4lsrc: got format %08lx\n", format);
+
+ switch (format) {
+ case GST_MAKE_FOURCC ('R','G','B',' '):
+ {
+ gint depth, endianness, bpp;
+
+ depth = gst_caps_get_int (*caps, "depth");
+ bpp = gst_caps_get_int (*caps, "bpp");
+ endianness = gst_caps_get_int (*caps, "endianness");
+
+ GST_DEBUG (0, "%d\n", depth);
+ g_print ("v4lsrc: got depth %d, bpp %d, endianness %d\n", depth, bpp, endianness);
+ switch (depth) {
+ case 15:
+ v4lsrc->format = (endianness == G_LITTLE_ENDIAN ?
+ VIDEO_RGB15_LE:
+ VIDEO_RGB15_BE);
+ v4lsrc->buffer_size = width * height * 2;
+ break;
+ case 16:
+ v4lsrc->format = (endianness == G_LITTLE_ENDIAN ?
+ VIDEO_RGB16_LE:
+ VIDEO_RGB16_BE);
+ v4lsrc->buffer_size = width * height * 2;
+ break;
+ case 24:
+ v4lsrc->format = (endianness == G_LITTLE_ENDIAN ?
+ VIDEO_BGR24:
+ VIDEO_RGB24);
+ v4lsrc->buffer_size = width * height * 3;
+ break;
+ case 32:
+ v4lsrc->format = (endianness == G_LITTLE_ENDIAN ?
+ VIDEO_BGR32:
+ VIDEO_RGB32);
+ v4lsrc->buffer_size = width * height * 4;
+ break;
+ default:
+ *caps = NULL;
+ return GST_PAD_NEGOTIATE_TRY;
+ }
+ break;
+ }
+ case GST_MAKE_FOURCC ('I','4','2','0'):
+ v4lsrc->format = VIDEO_YUV420P;
+ v4lsrc->buffer_size = width * height +
+ width * height / 2;
+ break;
+ case GST_MAKE_FOURCC ('U','Y','V','Y'):
+ if (G_BYTE_ORDER == G_BIG_ENDIAN) {
+ v4lsrc->format = VIDEO_YUV422;
+ v4lsrc->buffer_size = width * height * 2;
+ break;
+ }
+ else {
+ *caps = NULL;
+ return GST_PAD_NEGOTIATE_TRY;
+ }
+ case GST_MAKE_FOURCC ('Y','U','Y','2'):
+ if (G_BYTE_ORDER == G_LITTLE_ENDIAN) {
+ v4lsrc->format = VIDEO_YUV422;
+ v4lsrc->buffer_size = width * height * 2;
+ break;
+ }
+ else {
+ *caps = NULL;
+ return GST_PAD_NEGOTIATE_TRY;
+ }
+ default:
+ *caps = NULL;
+ return GST_PAD_NEGOTIATE_TRY;
+ }
+ v4lsrc->width = width;
+ v4lsrc->height = height;
+
+ if (gst_v4lsrc_sync_parms (v4lsrc)) {
+ return GST_PAD_NEGOTIATE_AGREE;
+ }
+ else {
+ *caps = NULL;
+ return GST_PAD_NEGOTIATE_TRY;
+ }
+ }
+
+ return GST_PAD_NEGOTIATE_FAIL;
+}
+
+static GstCaps*
+gst_v4lsrc_create_caps (GstV4lSrc *src)
+{
+ GstCaps *caps;
+ gulong fourcc = 0;
+ gint width, height;
+
+ width = src->width;
+ height = src->height;
+
+ switch (src->format) {
+ case VIDEO_RGB08:
+ case VIDEO_GRAY:
+ case VIDEO_LUT2:
+ case VIDEO_LUT4:
+ caps = NULL;
+ break;
+ case VIDEO_RGB15_LE:
+ case VIDEO_RGB16_LE:
+ case VIDEO_RGB15_BE:
+ case VIDEO_RGB16_BE:
+ case VIDEO_BGR24:
+ case VIDEO_BGR32:
+ case VIDEO_RGB24:
+ case VIDEO_RGB32:
+ caps = NULL;
+ break;
+ case VIDEO_YUV422:
+ case VIDEO_YUV422P:
+ case VIDEO_YUV420P: {
+
+ if (src->format == VIDEO_YUV422) {
+ fourcc = GST_STR_FOURCC ("YUY2");
+ src->buffer_size = width * height * 2;
+ }
+ else if (src->format == VIDEO_YUV422P) {
+ fourcc = GST_STR_FOURCC ("YV12");
+ src->buffer_size = width * height * 2;
+ }
+ else if (src->format == VIDEO_YUV420P) {
+ fourcc = GST_STR_FOURCC ("I420");
+ src->buffer_size = width * height +
+ width * height / 2;
+ }
+
+ caps = GST_CAPS_NEW (
+ "v4lsrc_caps",
+ "video/raw",
+ "format", GST_PROPS_FOURCC (fourcc),
+ "width", GST_PROPS_INT (src->width),
+ "height", GST_PROPS_INT (src->height)
+ );
+ break;
+ }
+ default:
+ caps = NULL;
+ break;
+ }
+
+ return caps;
+}
+
+static GstBuffer*
+gst_v4lsrc_get (GstPad *pad)
+{
+ GstV4lSrc *v4lsrc;
+ GstBuffer *buf = NULL;
+ guint8 *grab_buf;
+
+ g_return_val_if_fail (pad != NULL, NULL);
+
+ v4lsrc = GST_V4LSRC (gst_pad_get_parent (pad));
+
+ if (v4lsrc->format && v4lsrc->init) {
+ gst_pad_set_caps (v4lsrc->srcpad, gst_v4lsrc_create_caps (v4lsrc));
+ v4lsrc->init = FALSE;
+ }
+ else {
+ if (!gst_pad_get_caps (v4lsrc->srcpad) &&
+ !gst_pad_renegotiate (v4lsrc->srcpad)) {
+ return NULL;
+ }
+ }
+
+ buf = gst_buffer_new();
+ GST_BUFFER_DATA(buf) = g_malloc(v4lsrc->buffer_size);
+ GST_BUFFER_SIZE(buf) = v4lsrc->buffer_size;
+ GST_DEBUG (0,"v4lsrc: making new buffer %p\n", GST_BUFFER_DATA(buf));
+
+ GST_DEBUG (0,"v4lsrc: request buffer\n");
+ // request a buffer from the grabber
+ grab_buf = v4lsrc->grabber->grab_capture(v4lsrc->grabber, 0);
+ //meta_pull->overlay_info->did_overlay = FALSE;
+
+ g_assert(buf != NULL);
+
+ GST_DEBUG (0,"v4lsrc: sending %d bytes in %p\n", GST_BUFFER_SIZE(buf), GST_BUFFER_DATA(buf));
+ // copy the buffer
+ memcpy(GST_BUFFER_DATA(buf), grab_buf, GST_BUFFER_SIZE(buf));
+
+ GST_DEBUG (0,"v4lsrc: sent %d bytes in %p\n", GST_BUFFER_SIZE(buf), GST_BUFFER_DATA(buf));
+
+ return buf;
+}
+
+static void
+gst_v4lsrc_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+{
+ GstV4lSrc *src;
+ int ret = 0;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_V4LSRC(object));
+ src = GST_V4LSRC(object);
+
+ switch (prop_id) {
+ case ARG_WIDTH:
+ src->width = g_value_get_int (value);
+ gst_v4lsrc_sync_parms(src);
+ break;
+ case ARG_HEIGHT:
+ src->height = g_value_get_int (value);
+ gst_v4lsrc_sync_parms(src);
+ break;
+ case ARG_FORMAT:
+ src->format = g_value_get_int (value);
+ break;
+ case ARG_TUNE:
+ src->tune = g_value_get_ulong (value);
+ ret = src->grabber->grab_tune(src->grabber, src->tune);
+ break;
+ case ARG_INPUT:
+ src->input = g_value_get_int (value);
+ ret = src->grabber->grab_input(src->grabber, src->input, -1);
+ break;
+ case ARG_NORM:
+ src->norm = g_value_get_int (value);
+ ret = src->grabber->grab_input(src->grabber, -1, src->norm);
+ break;
+ case ARG_VOLUME:
+ src->volume = g_value_get_int (value);
+ ret = src->grabber->grab_setattr(src->grabber, GRAB_ATTR_VOLUME, src->volume);
+ break;
+ case ARG_MUTE:
+ src->mute = g_value_get_boolean (value);
+ ret = src->grabber->grab_setattr(src->grabber, GRAB_ATTR_MUTE, src->mute);
+ break;
+ case ARG_AUDIO_MODE:
+ src->audio_mode = g_value_get_int (value);
+ ret = src->grabber->grab_setattr(src->grabber, GRAB_ATTR_MODE, src->audio_mode);
+ break;
+ case ARG_COLOR:
+ src->color = g_value_get_int (value);
+ ret = src->grabber->grab_setattr(src->grabber, GRAB_ATTR_COLOR, src->color);
+ break;
+ case ARG_BRIGHT:
+ src->bright = g_value_get_int (value);
+ ret = src->grabber->grab_setattr(src->grabber, GRAB_ATTR_BRIGHT, src->bright);
+ break;
+ case ARG_HUE:
+ src->hue = g_value_get_int (value);
+ ret = src->grabber->grab_setattr(src->grabber, GRAB_ATTR_HUE, src->hue);
+ break;
+ case ARG_CONTRAST:
+ src->contrast = g_value_get_int (value);
+ ret = src->grabber->grab_setattr(src->grabber, GRAB_ATTR_CONTRAST, src->contrast);
+ break;
+ case ARG_DEVICE:
+ if (src->device)
+ g_free (src->device);
+ src->device = g_strdup (g_value_get_string (value));
+ break;
+ default:
+ ret = -1;
+ break;
+ }
+ if (ret == -1) {
+ fprintf(stderr, "v4lsrc: error setting property\n");
+ }
+}
+
+static void
+gst_v4lsrc_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+ GstV4lSrc *src;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_V4LSRC(object));
+ src = GST_V4LSRC(object);
+
+ g_print ("get arg\n");
+
+ switch (prop_id) {
+ case ARG_WIDTH:
+ g_value_set_int (value, src->width);
+ break;
+ case ARG_HEIGHT:
+ g_value_set_int (value, src->height);
+ break;
+ case ARG_TUNED:
+ g_value_set_boolean (value, src->grabber->grab_tuned(src->grabber));
+ break;
+ case ARG_VOLUME:
+ g_value_set_int (value, src->grabber->grab_getattr(src->grabber, GRAB_ATTR_VOLUME));
+ break;
+ case ARG_MUTE:
+ g_value_set_int (value, src->grabber->grab_getattr(src->grabber, GRAB_ATTR_MUTE));
+ break;
+ case ARG_AUDIO_MODE:
+ g_value_set_int (value, src->grabber->grab_getattr(src->grabber, GRAB_ATTR_MODE));
+ break;
+ case ARG_COLOR:
+ g_value_set_int (value, src->grabber->grab_getattr(src->grabber, GRAB_ATTR_COLOR));
+ break;
+ case ARG_BRIGHT:
+ g_value_set_int (value, src->grabber->grab_getattr(src->grabber, GRAB_ATTR_BRIGHT));
+ break;
+ case ARG_HUE:
+ g_value_set_int (value, src->grabber->grab_getattr(src->grabber, GRAB_ATTR_HUE));
+ break;
+ case ARG_CONTRAST:
+ g_value_set_int (value, src->grabber->grab_getattr(src->grabber, GRAB_ATTR_CONTRAST));
+ break;
+ case ARG_DEVICE:
+ g_value_set_string (value, src->device);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static GstElementStateReturn
+gst_v4lsrc_change_state (GstElement *element)
+{
+ g_return_val_if_fail(GST_IS_V4LSRC(element), FALSE);
+
+ /* if going down into NULL state, close the file if it's open */
+ if (GST_STATE_PENDING(element) == GST_STATE_NULL) {
+ if (GST_FLAG_IS_SET(element,GST_V4LSRC_OPEN))
+ gst_v4lsrc_close_v4l(GST_V4LSRC(element));
+ /* otherwise (READY or higher) we need to open the sound card */
+ } else {
+ gst_info ("v4lsrc: opening\n");
+ if (!GST_FLAG_IS_SET(element,GST_V4LSRC_OPEN)) {
+ if (!gst_v4lsrc_open_v4l(GST_V4LSRC(element))) {
+ gst_info ("v4lsrc: open failed\n");
+ return GST_STATE_FAILURE;
+ }
+ }
+ }
+
+ if (GST_ELEMENT_CLASS(parent_class)->change_state)
+ return GST_ELEMENT_CLASS(parent_class)->change_state(element);
+
+ return GST_STATE_SUCCESS;
+}
+
+static gboolean
+gst_v4lsrc_sync_parms (GstV4lSrc *src)
+{
+ gint linelength;
+ gboolean success;
+
+ g_return_val_if_fail(src != NULL, FALSE);
+ g_return_val_if_fail(GST_IS_V4LSRC(src), FALSE);
+
+ GST_DEBUG (0,"v4lsrc: resync %d %d %d\n", src->width, src->height, src->format);
+
+ if (!src->grabber->opened)
+ return FALSE;
+
+ if (src->grabber->grab_setparams(src->grabber, src->format, &src->width, &src->height, &linelength) != 0) {
+ fprintf(stderr, "v4lsrc: error setting params\n");
+ success = FALSE;
+ }
+ else {
+ GST_DEBUG (0,"v4lsrc: resynced to %d %d %d\n", src->width, src->height, src->buffer_size);
+ success = TRUE;
+ }
+ return success;
+}
+
+static gboolean
+gst_v4lsrc_open_v4l (GstV4lSrc *src)
+{
+ g_return_val_if_fail(src->grabber != NULL, FALSE);
+ g_return_val_if_fail(!src->grabber->opened, FALSE);
+
+ if (src->grabber->grab_open(src->grabber, src->device) != -1) {
+ gst_v4lsrc_sync_parms(src);
+ GST_FLAG_SET(src, GST_V4LSRC_OPEN);
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static void
+gst_v4lsrc_close_v4l (GstV4lSrc *src)
+{
+ g_return_if_fail(src->grabber != NULL);
+ g_return_if_fail(src->grabber->opened);
+
+ src->grabber->grab_close(src->grabber);
+ GST_FLAG_UNSET(src, GST_V4LSRC_OPEN);
+}
+
+static gboolean
+plugin_init (GModule *module, GstPlugin *plugin)
+{
+ GstElementFactory *factory;
+
+ /* create an elementfactory for the v4lsrcparse element */
+ factory = gst_elementfactory_new("v4lsrc",GST_TYPE_V4LSRC,
+ &gst_v4lsrc_details);
+ g_return_val_if_fail(factory != NULL, FALSE);
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
+
+ return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+ GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "v4lsrc",
+ plugin_init
+};
+
projects / platform / upstream / gstreamer.git / commitdiff