Give better filenames to bktr and v4l grabbers
authorRamiro Polla <ramiro.polla@gmail.com>
Wed, 5 Sep 2007 18:44:06 +0000 (18:44 +0000)
committerRamiro Polla <ramiro.polla@gmail.com>
Wed, 5 Sep 2007 18:44:06 +0000 (18:44 +0000)
Originally committed as revision 10412 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/Makefile
libavformat/bktr.c [new file with mode: 0644]
libavformat/grab.c [deleted file]
libavformat/grab_bktr.c [deleted file]
libavformat/v4l.c [new file with mode: 0644]

index 04c74a1..14f216c 100644 (file)
@@ -32,7 +32,7 @@ OBJS-$(CONFIG_AVI_MUXER)                 += avienc.o riff.o
 OBJS-$(CONFIG_AVISYNTH)                  += avisynth.o
 OBJS-$(CONFIG_AVS_DEMUXER)               += avs.o vocdec.o voc.o
 OBJS-$(CONFIG_BETHSOFTVID_DEMUXER)       += bethsoftvid.o
-OBJS-$(CONFIG_BKTR_DEMUXER)              += grab_bktr.o
+OBJS-$(CONFIG_BKTR_DEMUXER)              += bktr.o
 OBJS-$(CONFIG_C93_DEMUXER)               += c93.o vocdec.o voc.o
 OBJS-$(CONFIG_CRC_MUXER)                 += crc.o
 OBJS-$(CONFIG_DAUD_DEMUXER)              += daud.o
@@ -138,7 +138,7 @@ OBJS-$(CONFIG_TIERTEXSEQ_DEMUXER)        += tiertexseq.o
 OBJS-$(CONFIG_TTA_DEMUXER)               += tta.o
 OBJS-$(CONFIG_TXD_DEMUXER)               += txd.o
 OBJS-$(CONFIG_V4L2_DEMUXER)              += v4l2.o
-OBJS-$(CONFIG_V4L_DEMUXER)               += grab.o
+OBJS-$(CONFIG_V4L_DEMUXER)               += v4l.o
 OBJS-$(CONFIG_VC1_DEMUXER)               += raw.o
 OBJS-$(CONFIG_VMD_DEMUXER)               += sierravmd.o
 OBJS-$(CONFIG_VOC_DEMUXER)               += vocdec.o voc.o
diff --git a/libavformat/bktr.c b/libavformat/bktr.c
new file mode 100644 (file)
index 0000000..7bf51d7
--- /dev/null
@@ -0,0 +1,320 @@
+/*
+ * *BSD video grab interface
+ * Copyright (c) 2002 Steve O'Hara-Smith
+ * based on
+ *           Linux video grab interface
+ *           Copyright (c) 2000,2001 Gerard Lantau.
+ * and
+ *           simple_grab.c Copyright (c) 1999 Roger Hardiman
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "avformat.h"
+#if defined (HAVE_DEV_BKTR_IOCTL_METEOR_H) && defined (HAVE_DEV_BKTR_IOCTL_BT848_H)
+# include <dev/bktr/ioctl_meteor.h>
+# include <dev/bktr/ioctl_bt848.h>
+#elif defined (HAVE_MACHINE_IOCTL_METEOR_H) && defined (HAVE_MACHINE_IOCTL_BT848_H)
+# include <machine/ioctl_meteor.h>
+# include <machine/ioctl_bt848.h>
+#elif defined (HAVE_DEV_VIDEO_METEOR_IOCTL_METEOR_H) && defined (HAVE_DEV_VIDEO_METEOR_IOCTL_BT848_H)
+# include <dev/video/meteor/ioctl_meteor.h>
+# include <dev/video/bktr/ioctl_bt848.h>
+#elif HAVE_DEV_IC_BT8XX_H
+# include <dev/ic/bt8xx.h>
+#endif
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/time.h>
+#include <signal.h>
+
+typedef struct {
+    int video_fd;
+    int tuner_fd;
+    int width, height;
+    int frame_rate;
+    int frame_rate_base;
+    u_int64_t per_frame;
+} VideoData;
+
+
+#define PAL 1
+#define PALBDGHI 1
+#define NTSC 2
+#define NTSCM 2
+#define SECAM 3
+#define PALN 4
+#define PALM 5
+#define NTSCJ 6
+
+/* PAL is 768 x 576. NTSC is 640 x 480 */
+#define PAL_HEIGHT 576
+#define SECAM_HEIGHT 576
+#define NTSC_HEIGHT 480
+
+#ifndef VIDEO_FORMAT
+#define VIDEO_FORMAT NTSC
+#endif
+
+static int bktr_dev[] = { METEOR_DEV0, METEOR_DEV1, METEOR_DEV2,
+    METEOR_DEV3, METEOR_DEV_SVIDEO };
+
+uint8_t *video_buf;
+size_t video_buf_size;
+u_int64_t last_frame_time;
+volatile sig_atomic_t nsignals;
+
+
+static void catchsignal(int signal)
+{
+    nsignals++;
+    return;
+}
+
+static int bktr_init(const char *video_device, int width, int height,
+    int format, int *video_fd, int *tuner_fd, int idev, double frequency)
+{
+    struct meteor_geomet geo;
+    int h_max;
+    long ioctl_frequency;
+    char *arg;
+    int c;
+    struct sigaction act, old;
+
+    if (idev < 0 || idev > 4)
+    {
+        arg = getenv ("BKTR_DEV");
+        if (arg)
+            idev = atoi (arg);
+        if (idev < 0 || idev > 4)
+            idev = 1;
+    }
+
+    if (format < 1 || format > 6)
+    {
+        arg = getenv ("BKTR_FORMAT");
+        if (arg)
+            format = atoi (arg);
+        if (format < 1 || format > 6)
+            format = VIDEO_FORMAT;
+    }
+
+    if (frequency <= 0)
+    {
+        arg = getenv ("BKTR_FREQUENCY");
+        if (arg)
+            frequency = atof (arg);
+        if (frequency <= 0)
+            frequency = 0.0;
+    }
+
+    memset(&act, 0, sizeof(act));
+    sigemptyset(&act.sa_mask);
+    act.sa_handler = catchsignal;
+    sigaction(SIGUSR1, &act, &old);
+
+    *tuner_fd = open("/dev/tuner0", O_RDONLY);
+    if (*tuner_fd < 0)
+        perror("Warning: Tuner not opened, continuing");
+
+    *video_fd = open(video_device, O_RDONLY);
+    if (*video_fd < 0) {
+        perror(video_device);
+        return -1;
+    }
+
+    geo.rows = height;
+    geo.columns = width;
+    geo.frames = 1;
+    geo.oformat = METEOR_GEO_YUV_422 | METEOR_GEO_YUV_12;
+
+    switch (format) {
+    case PAL:   h_max = PAL_HEIGHT;   c = BT848_IFORM_F_PALBDGHI; break;
+    case PALN:  h_max = PAL_HEIGHT;   c = BT848_IFORM_F_PALN;     break;
+    case PALM:  h_max = PAL_HEIGHT;   c = BT848_IFORM_F_PALM;     break;
+    case SECAM: h_max = SECAM_HEIGHT; c = BT848_IFORM_F_SECAM;    break;
+    case NTSC:  h_max = NTSC_HEIGHT;  c = BT848_IFORM_F_NTSCM;    break;
+    case NTSCJ: h_max = NTSC_HEIGHT;  c = BT848_IFORM_F_NTSCJ;    break;
+    default:    h_max = PAL_HEIGHT;   c = BT848_IFORM_F_PALBDGHI; break;
+    }
+
+    if (height <= h_max / 2)
+        geo.oformat |= METEOR_GEO_EVEN_ONLY;
+
+    if (ioctl(*video_fd, METEORSETGEO, &geo) < 0) {
+        perror("METEORSETGEO");
+        return -1;
+    }
+
+    if (ioctl(*video_fd, BT848SFMT, &c) < 0) {
+        perror("BT848SFMT");
+        return -1;
+    }
+
+    c = bktr_dev[idev];
+    if (ioctl(*video_fd, METEORSINPUT, &c) < 0) {
+        perror("METEORSINPUT");
+        return -1;
+    }
+
+    video_buf_size = width * height * 12 / 8;
+
+    video_buf = (uint8_t *)mmap((caddr_t)0, video_buf_size,
+        PROT_READ, MAP_SHARED, *video_fd, (off_t)0);
+    if (video_buf == MAP_FAILED) {
+        perror("mmap");
+        return -1;
+    }
+
+    if (frequency != 0.0) {
+        ioctl_frequency  = (unsigned long)(frequency*16);
+        if (ioctl(*tuner_fd, TVTUNER_SETFREQ, &ioctl_frequency) < 0)
+            perror("TVTUNER_SETFREQ");
+    }
+
+    c = AUDIO_UNMUTE;
+    if (ioctl(*tuner_fd, BT848_SAUDIO, &c) < 0)
+        perror("TVTUNER_SAUDIO");
+
+    c = METEOR_CAP_CONTINOUS;
+    ioctl(*video_fd, METEORCAPTUR, &c);
+
+    c = SIGUSR1;
+    ioctl(*video_fd, METEORSSIGNAL, &c);
+
+    return 0;
+}
+
+static void bktr_getframe(u_int64_t per_frame)
+{
+    u_int64_t curtime;
+
+    curtime = av_gettime();
+    if (!last_frame_time
+        || ((last_frame_time + per_frame) > curtime)) {
+        if (!usleep(last_frame_time + per_frame + per_frame / 8 - curtime)) {
+            if (!nsignals)
+                av_log(NULL, AV_LOG_INFO,
+                       "SLEPT NO signals - %d microseconds late\n",
+                       (int)(av_gettime() - last_frame_time - per_frame));
+        }
+    }
+    nsignals = 0;
+    last_frame_time = curtime;
+}
+
+
+/* note: we support only one picture read at a time */
+static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
+{
+    VideoData *s = s1->priv_data;
+
+    if (av_new_packet(pkt, video_buf_size) < 0)
+        return AVERROR(EIO);
+
+    bktr_getframe(s->per_frame);
+
+    pkt->pts = av_gettime();
+    memcpy(pkt->data, video_buf, video_buf_size);
+
+    return video_buf_size;
+}
+
+static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
+{
+    VideoData *s = s1->priv_data;
+    AVStream *st;
+    int width, height;
+    int frame_rate;
+    int frame_rate_base;
+    int format = -1;
+
+    if (ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0)
+        return -1;
+
+    width = ap->width;
+    height = ap->height;
+    frame_rate = ap->time_base.den;
+    frame_rate_base = ap->time_base.num;
+
+    st = av_new_stream(s1, 0);
+    if (!st)
+        return AVERROR(ENOMEM);
+    av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in use */
+
+    s->width = width;
+    s->height = height;
+    s->frame_rate = frame_rate;
+    s->frame_rate_base = frame_rate_base;
+    s->per_frame = ((u_int64_t)1000000 * s->frame_rate_base) / s->frame_rate;
+
+    st->codec->codec_type = CODEC_TYPE_VIDEO;
+    st->codec->pix_fmt = PIX_FMT_YUV420P;
+    st->codec->codec_id = CODEC_ID_RAWVIDEO;
+    st->codec->width = width;
+    st->codec->height = height;
+    st->codec->time_base.den = frame_rate;
+    st->codec->time_base.num = frame_rate_base;
+
+    if (ap->standard) {
+        if (!strcasecmp(ap->standard, "pal"))
+            format = PAL;
+        else if (!strcasecmp(ap->standard, "secam"))
+            format = SECAM;
+        else if (!strcasecmp(ap->standard, "ntsc"))
+            format = NTSC;
+    }
+
+    if (bktr_init(s1->filename, width, height, format,
+            &(s->video_fd), &(s->tuner_fd), -1, 0.0) < 0)
+        return AVERROR(EIO);
+
+    nsignals = 0;
+    last_frame_time = 0;
+
+    return 0;
+}
+
+static int grab_read_close(AVFormatContext *s1)
+{
+    VideoData *s = s1->priv_data;
+    int c;
+
+    c = METEOR_CAP_STOP_CONT;
+    ioctl(s->video_fd, METEORCAPTUR, &c);
+    close(s->video_fd);
+
+    c = AUDIO_MUTE;
+    ioctl(s->tuner_fd, BT848_SAUDIO, &c);
+    close(s->tuner_fd);
+
+    munmap((caddr_t)video_buf, video_buf_size);
+
+    return 0;
+}
+
+AVInputFormat bktr_demuxer = {
+    "bktr",
+    "video grab",
+    sizeof(VideoData),
+    NULL,
+    grab_read_header,
+    grab_read_packet,
+    grab_read_close,
+    .flags = AVFMT_NOFILE,
+};
diff --git a/libavformat/grab.c b/libavformat/grab.c
deleted file mode 100644 (file)
index ac3cb0e..0000000
+++ /dev/null
@@ -1,852 +0,0 @@
-/*
- * Linux video grab interface
- * Copyright (c) 2000,2001 Fabrice Bellard.
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-#include "avformat.h"
-#include "dsputil.h"
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/time.h>
-#define _LINUX_TIME_H 1
-#include <linux/videodev.h>
-#include <time.h>
-
-typedef struct {
-    int fd;
-    int frame_format; /* see VIDEO_PALETTE_xxx */
-    int use_mmap;
-    int width, height;
-    int frame_rate;
-    int frame_rate_base;
-    int64_t time_frame;
-    int frame_size;
-    struct video_capability video_cap;
-    struct video_audio audio_saved;
-    uint8_t *video_buf;
-    struct video_mbuf gb_buffers;
-    struct video_mmap gb_buf;
-    int gb_frame;
-
-    /* ATI All In Wonder specific stuff */
-    /* XXX: remove and merge in libavcodec/imgconvert.c */
-    int aiw_enabled;
-    int deint;
-    int halfw;
-    uint8_t *src_mem;
-    uint8_t *lum_m4_mem;
-} VideoData;
-
-struct {
-    int palette;
-    int depth;
-    enum PixelFormat pix_fmt;
-} video_formats [] = {
-    {.palette = VIDEO_PALETTE_YUV420P, .depth = 12, .pix_fmt = PIX_FMT_YUV420P },
-    {.palette = VIDEO_PALETTE_YUV422,  .depth = 16, .pix_fmt = PIX_FMT_YUYV422 },
-    {.palette = VIDEO_PALETTE_UYVY,    .depth = 16, .pix_fmt = PIX_FMT_UYVY422 },
-    {.palette = VIDEO_PALETTE_YUYV,    .depth = 16, .pix_fmt = PIX_FMT_YUYV422 },
-    /* NOTE: v4l uses BGR24, not RGB24 */
-    {.palette = VIDEO_PALETTE_RGB24,   .depth = 24, .pix_fmt = PIX_FMT_BGR24   },
-    {.palette = VIDEO_PALETTE_RGB565,  .depth = 16, .pix_fmt = PIX_FMT_BGR565  },
-    {.palette = VIDEO_PALETTE_GREY,    .depth = 8,  .pix_fmt = PIX_FMT_GRAY8   },
-};
-
-
-static int aiw_init(VideoData *s);
-static int aiw_read_picture(VideoData *s, uint8_t *data);
-static int aiw_close(VideoData *s);
-
-static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
-{
-    VideoData *s = s1->priv_data;
-    AVStream *st;
-    int width, height;
-    int video_fd, frame_size;
-    int ret, frame_rate, frame_rate_base;
-    int desired_palette, desired_depth;
-    struct video_tuner tuner;
-    struct video_audio audio;
-    struct video_picture pict;
-    int j;
-    int vformat_num = sizeof(video_formats) / sizeof(video_formats[0]);
-
-    if (ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0) {
-        av_log(s1, AV_LOG_ERROR, "Bad capture size (%dx%d) or wrong time base (%d)\n",
-            ap->width, ap->height, ap->time_base.den);
-
-        return -1;
-    }
-
-    width = ap->width;
-    height = ap->height;
-    frame_rate      = ap->time_base.den;
-    frame_rate_base = ap->time_base.num;
-
-    if((unsigned)width > 32767 || (unsigned)height > 32767) {
-        av_log(s1, AV_LOG_ERROR, "Capture size is out of range: %dx%d\n",
-            width, height);
-
-        return -1;
-    }
-
-    st = av_new_stream(s1, 0);
-    if (!st)
-        return AVERROR(ENOMEM);
-    av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
-
-    s->width = width;
-    s->height = height;
-    s->frame_rate      = frame_rate;
-    s->frame_rate_base = frame_rate_base;
-
-    video_fd = open(s1->filename, O_RDWR);
-    if (video_fd < 0) {
-        perror(s1->filename);
-        goto fail;
-    }
-
-    if (ioctl(video_fd,VIDIOCGCAP, &s->video_cap) < 0) {
-        perror("VIDIOCGCAP");
-        goto fail;
-    }
-
-    if (!(s->video_cap.type & VID_TYPE_CAPTURE)) {
-        av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not handle capture\n");
-        goto fail;
-    }
-
-    desired_palette = -1;
-    desired_depth = -1;
-    for (j = 0; j < vformat_num; j++) {
-        if (ap->pix_fmt == video_formats[j].pix_fmt) {
-            desired_palette = video_formats[j].palette;
-            desired_depth = video_formats[j].depth;
-            break;
-        }
-    }
-
-    /* set tv standard */
-    if (ap->standard && !ioctl(video_fd, VIDIOCGTUNER, &tuner)) {
-        if (!strcasecmp(ap->standard, "pal"))
-            tuner.mode = VIDEO_MODE_PAL;
-        else if (!strcasecmp(ap->standard, "secam"))
-            tuner.mode = VIDEO_MODE_SECAM;
-        else
-            tuner.mode = VIDEO_MODE_NTSC;
-        ioctl(video_fd, VIDIOCSTUNER, &tuner);
-    }
-
-    /* unmute audio */
-    audio.audio = 0;
-    ioctl(video_fd, VIDIOCGAUDIO, &audio);
-    memcpy(&s->audio_saved, &audio, sizeof(audio));
-    audio.flags &= ~VIDEO_AUDIO_MUTE;
-    ioctl(video_fd, VIDIOCSAUDIO, &audio);
-
-    ioctl(video_fd, VIDIOCGPICT, &pict);
-#if 0
-    printf("v4l: colour=%d hue=%d brightness=%d constrast=%d whiteness=%d\n",
-           pict.colour,
-           pict.hue,
-           pict.brightness,
-           pict.contrast,
-           pict.whiteness);
-#endif
-    /* try to choose a suitable video format */
-    pict.palette = desired_palette;
-    pict.depth= desired_depth;
-    if (desired_palette == -1 || (ret = ioctl(video_fd, VIDIOCSPICT, &pict)) < 0) {
-        for (j = 0; j < vformat_num; j++) {
-            pict.palette = video_formats[j].palette;
-            pict.depth = video_formats[j].depth;
-            if (-1 != ioctl(video_fd, VIDIOCSPICT, &pict))
-                break;
-        }
-        if (j >= vformat_num)
-            goto fail1;
-    }
-
-    ret = ioctl(video_fd,VIDIOCGMBUF,&s->gb_buffers);
-    if (ret < 0) {
-        /* try to use read based access */
-        struct video_window win;
-        int val;
-
-        win.x = 0;
-        win.y = 0;
-        win.width = width;
-        win.height = height;
-        win.chromakey = -1;
-        win.flags = 0;
-
-        ioctl(video_fd, VIDIOCSWIN, &win);
-
-        s->frame_format = pict.palette;
-
-        val = 1;
-        ioctl(video_fd, VIDIOCCAPTURE, &val);
-
-        s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;
-        s->use_mmap = 0;
-
-        /* ATI All In Wonder automatic activation */
-        if (!strcmp(s->video_cap.name, "Km")) {
-            if (aiw_init(s) < 0)
-                goto fail;
-            s->aiw_enabled = 1;
-            /* force 420P format because conversion from YUV422 to YUV420P
-               is done in this driver (ugly) */
-            s->frame_format = VIDEO_PALETTE_YUV420P;
-        }
-    } else {
-        s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_SHARED,video_fd,0);
-        if ((unsigned char*)-1 == s->video_buf) {
-            s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_PRIVATE,video_fd,0);
-            if ((unsigned char*)-1 == s->video_buf) {
-                perror("mmap");
-                goto fail;
-            }
-        }
-        s->gb_frame = 0;
-        s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;
-
-        /* start to grab the first frame */
-        s->gb_buf.frame = s->gb_frame % s->gb_buffers.frames;
-        s->gb_buf.height = height;
-        s->gb_buf.width = width;
-        s->gb_buf.format = pict.palette;
-
-        ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
-        if (ret < 0) {
-            if (errno != EAGAIN) {
-            fail1:
-                av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not support suitable format\n");
-            } else {
-                av_log(s1, AV_LOG_ERROR,"Fatal: grab device does not receive any video signal\n");
-            }
-            goto fail;
-        }
-        for (j = 1; j < s->gb_buffers.frames; j++) {
-          s->gb_buf.frame = j;
-          ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
-        }
-        s->frame_format = s->gb_buf.format;
-        s->use_mmap = 1;
-    }
-
-    for (j = 0; j < vformat_num; j++) {
-        if (s->frame_format == video_formats[j].palette) {
-            frame_size = width * height * video_formats[j].depth / 8;
-            st->codec->pix_fmt = video_formats[j].pix_fmt;
-            break;
-        }
-    }
-
-    if (j >= vformat_num)
-        goto fail;
-
-    s->fd = video_fd;
-    s->frame_size = frame_size;
-
-    st->codec->codec_type = CODEC_TYPE_VIDEO;
-    st->codec->codec_id = CODEC_ID_RAWVIDEO;
-    st->codec->width = width;
-    st->codec->height = height;
-    st->codec->time_base.den      = frame_rate;
-    st->codec->time_base.num = frame_rate_base;
-    st->codec->bit_rate = frame_size * 1/av_q2d(st->codec->time_base) * 8;
-
-    return 0;
- fail:
-    if (video_fd >= 0)
-        close(video_fd);
-    av_free(st);
-    return AVERROR(EIO);
-}
-
-static int v4l_mm_read_picture(VideoData *s, uint8_t *buf)
-{
-    uint8_t *ptr;
-
-    while (ioctl(s->fd, VIDIOCSYNC, &s->gb_frame) < 0 &&
-           (errno == EAGAIN || errno == EINTR));
-
-    ptr = s->video_buf + s->gb_buffers.offsets[s->gb_frame];
-    memcpy(buf, ptr, s->frame_size);
-
-    /* Setup to capture the next frame */
-    s->gb_buf.frame = s->gb_frame;
-    if (ioctl(s->fd, VIDIOCMCAPTURE, &s->gb_buf) < 0) {
-        if (errno == EAGAIN)
-            av_log(NULL, AV_LOG_ERROR, "Cannot Sync\n");
-        else
-            perror("VIDIOCMCAPTURE");
-        return AVERROR(EIO);
-    }
-
-    /* This is now the grabbing frame */
-    s->gb_frame = (s->gb_frame + 1) % s->gb_buffers.frames;
-
-    return s->frame_size;
-}
-
-static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
-{
-    VideoData *s = s1->priv_data;
-    int64_t curtime, delay;
-    struct timespec ts;
-
-    /* Calculate the time of the next frame */
-    s->time_frame += INT64_C(1000000);
-
-    /* wait based on the frame rate */
-    for(;;) {
-        curtime = av_gettime();
-        delay = s->time_frame  * s->frame_rate_base / s->frame_rate - curtime;
-        if (delay <= 0) {
-            if (delay < INT64_C(-1000000) * s->frame_rate_base / s->frame_rate) {
-                /* printf("grabbing is %d frames late (dropping)\n", (int) -(delay / 16666)); */
-                s->time_frame += INT64_C(1000000);
-            }
-            break;
-        }
-        ts.tv_sec = delay / 1000000;
-        ts.tv_nsec = (delay % 1000000) * 1000;
-        nanosleep(&ts, NULL);
-    }
-
-    if (av_new_packet(pkt, s->frame_size) < 0)
-        return AVERROR(EIO);
-
-    pkt->pts = curtime;
-
-    /* read one frame */
-    if (s->aiw_enabled) {
-        return aiw_read_picture(s, pkt->data);
-    } else if (s->use_mmap) {
-        return v4l_mm_read_picture(s, pkt->data);
-    } else {
-        if (read(s->fd, pkt->data, pkt->size) != pkt->size)
-            return AVERROR(EIO);
-        return s->frame_size;
-    }
-}
-
-static int grab_read_close(AVFormatContext *s1)
-{
-    VideoData *s = s1->priv_data;
-
-    if (s->aiw_enabled)
-        aiw_close(s);
-
-    if (s->use_mmap)
-        munmap(s->video_buf, s->gb_buffers.size);
-
-    /* mute audio. we must force it because the BTTV driver does not
-       return its state correctly */
-    s->audio_saved.flags |= VIDEO_AUDIO_MUTE;
-    ioctl(s->fd, VIDIOCSAUDIO, &s->audio_saved);
-
-    close(s->fd);
-    return 0;
-}
-
-AVInputFormat v4l_demuxer = {
-    "video4linux",
-    "video grab",
-    sizeof(VideoData),
-    NULL,
-    grab_read_header,
-    grab_read_packet,
-    grab_read_close,
-    .flags = AVFMT_NOFILE,
-};
-
-/* All in Wonder specific stuff */
-/* XXX: remove and merge in libavcodec/imgconvert.c */
-
-static int aiw_init(VideoData *s)
-{
-    int width, height;
-
-    width = s->width;
-    height = s->height;
-
-    if ((width == s->video_cap.maxwidth && height == s->video_cap.maxheight) ||
-        (width == s->video_cap.maxwidth && height == s->video_cap.maxheight*2) ||
-        (width == s->video_cap.maxwidth/2 && height == s->video_cap.maxheight)) {
-
-        s->deint=0;
-        s->halfw=0;
-        if (height == s->video_cap.maxheight*2) s->deint=1;
-        if (width == s->video_cap.maxwidth/2) s->halfw=1;
-    } else {
-        av_log(NULL, AV_LOG_ERROR, "\nIncorrect Grab Size Supplied - Supported Sizes Are:\n");
-        av_log(NULL, AV_LOG_ERROR, " %dx%d  %dx%d %dx%d\n\n",
-                s->video_cap.maxwidth,s->video_cap.maxheight,
-                s->video_cap.maxwidth,s->video_cap.maxheight*2,
-                s->video_cap.maxwidth/2,s->video_cap.maxheight);
-        goto fail;
-    }
-
-    if (s->halfw == 0) {
-        s->src_mem = av_malloc(s->width*2);
-    } else {
-        s->src_mem = av_malloc(s->width*4);
-    }
-    if (!s->src_mem) goto fail;
-
-    s->lum_m4_mem = av_malloc(s->width);
-    if (!s->lum_m4_mem)
-        goto fail;
-    return 0;
- fail:
-    av_freep(&s->src_mem);
-    av_freep(&s->lum_m4_mem);
-    return -1;
-}
-
-#ifdef HAVE_MMX
-#include "i386/mmx.h"
-
-#define LINE_WITH_UV \
-                    movq_m2r(ptr[0],mm0); \
-                    movq_m2r(ptr[8],mm1);  \
-                    movq_r2r(mm0, mm4); \
-                    punpcklbw_r2r(mm1,mm0); \
-                    punpckhbw_r2r(mm1,mm4); \
-                    movq_r2r(mm0,mm5); \
-                    punpcklbw_r2r(mm4,mm0); \
-                    punpckhbw_r2r(mm4,mm5); \
-                    movq_r2r(mm0,mm1); \
-                    punpcklbw_r2r(mm5,mm1); \
-                    movq_r2m(mm1,lum[0]); \
-                    movq_m2r(ptr[16],mm2); \
-                    movq_m2r(ptr[24],mm1); \
-                    movq_r2r(mm2,mm4); \
-                    punpcklbw_r2r(mm1,mm2); \
-                    punpckhbw_r2r(mm1,mm4); \
-                    movq_r2r(mm2,mm3); \
-                    punpcklbw_r2r(mm4,mm2); \
-                    punpckhbw_r2r(mm4,mm3); \
-                    movq_r2r(mm2,mm1); \
-                    punpcklbw_r2r(mm3,mm1); \
-                    movq_r2m(mm1,lum[8]); \
-                    punpckhdq_r2r(mm2,mm0); \
-                    punpckhdq_r2r(mm3,mm5); \
-                    movq_r2m(mm0,cb[0]); \
-                    movq_r2m(mm5,cr[0]);
-
-#define LINE_NO_UV \
-                    movq_m2r(ptr[0],mm0);\
-                    movq_m2r(ptr[8],mm1);\
-                    movq_r2r(mm0, mm4);\
-                    punpcklbw_r2r(mm1,mm0); \
-                    punpckhbw_r2r(mm1,mm4);\
-                    movq_r2r(mm0,mm5);\
-                    punpcklbw_r2r(mm4,mm0);\
-                    punpckhbw_r2r(mm4,mm5);\
-                    movq_r2r(mm0,mm1);\
-                    punpcklbw_r2r(mm5,mm1);\
-                    movq_r2m(mm1,lum[0]);\
-                    movq_m2r(ptr[16],mm2);\
-                    movq_m2r(ptr[24],mm1);\
-                    movq_r2r(mm2,mm4);\
-                    punpcklbw_r2r(mm1,mm2);\
-                    punpckhbw_r2r(mm1,mm4);\
-                    movq_r2r(mm2,mm3);\
-                    punpcklbw_r2r(mm4,mm2);\
-                    punpckhbw_r2r(mm4,mm3);\
-                    movq_r2r(mm2,mm1);\
-                    punpcklbw_r2r(mm3,mm1);\
-                    movq_r2m(mm1,lum[8]);
-
-#define LINE_WITHUV_AVG \
-                    movq_m2r(ptr[0], mm0);\
-                    movq_m2r(ptr[8], mm1);\
-                    movq_r2r(mm0, mm4);\
-                    punpcklbw_r2r(mm1,mm0);\
-                    punpckhbw_r2r(mm1,mm4);\
-                    movq_r2r(mm0,mm5);\
-                    punpcklbw_r2r(mm4,mm0);\
-                    punpckhbw_r2r(mm4,mm5);\
-                    movq_r2r(mm0,mm1);\
-                    movq_r2r(mm5,mm2);\
-                    punpcklbw_r2r(mm7,mm1);\
-                    punpcklbw_r2r(mm7,mm2);\
-                    paddw_r2r(mm6,mm1);\
-                    paddw_r2r(mm2,mm1);\
-                    psraw_i2r(1,mm1);\
-                    packuswb_r2r(mm7,mm1);\
-                    movd_r2m(mm1,lum[0]);\
-                    movq_m2r(ptr[16],mm2);\
-                    movq_m2r(ptr[24],mm1);\
-                    movq_r2r(mm2,mm4);\
-                    punpcklbw_r2r(mm1,mm2);\
-                    punpckhbw_r2r(mm1,mm4);\
-                    movq_r2r(mm2,mm3);\
-                    punpcklbw_r2r(mm4,mm2);\
-                    punpckhbw_r2r(mm4,mm3);\
-                    movq_r2r(mm2,mm1);\
-                    movq_r2r(mm3,mm4);\
-                    punpcklbw_r2r(mm7,mm1);\
-                    punpcklbw_r2r(mm7,mm4);\
-                    paddw_r2r(mm6,mm1);\
-                    paddw_r2r(mm4,mm1);\
-                    psraw_i2r(1,mm1);\
-                    packuswb_r2r(mm7,mm1);\
-                    movd_r2m(mm1,lum[4]);\
-                    punpckhbw_r2r(mm7,mm0);\
-                    punpckhbw_r2r(mm7,mm2);\
-                    paddw_r2r(mm6,mm0);\
-                    paddw_r2r(mm2,mm0);\
-                    psraw_i2r(1,mm0);\
-                    packuswb_r2r(mm7,mm0);\
-                    punpckhbw_r2r(mm7,mm5);\
-                    punpckhbw_r2r(mm7,mm3);\
-                    paddw_r2r(mm6,mm5);\
-                    paddw_r2r(mm3,mm5);\
-                    psraw_i2r(1,mm5);\
-                    packuswb_r2r(mm7,mm5);\
-                    movd_r2m(mm0,cb[0]);\
-                    movd_r2m(mm5,cr[0]);
-
-#define LINE_NOUV_AVG \
-                    movq_m2r(ptr[0],mm0);\
-                    movq_m2r(ptr[8],mm1);\
-                    pand_r2r(mm5,mm0);\
-                    pand_r2r(mm5,mm1);\
-                    pmaddwd_r2r(mm6,mm0);\
-                    pmaddwd_r2r(mm6,mm1);\
-                    packssdw_r2r(mm1,mm0);\
-                    paddw_r2r(mm6,mm0);\
-                    psraw_i2r(1,mm0);\
-                    movq_m2r(ptr[16],mm2);\
-                    movq_m2r(ptr[24],mm3);\
-                    pand_r2r(mm5,mm2);\
-                    pand_r2r(mm5,mm3);\
-                    pmaddwd_r2r(mm6,mm2);\
-                    pmaddwd_r2r(mm6,mm3);\
-                    packssdw_r2r(mm3,mm2);\
-                    paddw_r2r(mm6,mm2);\
-                    psraw_i2r(1,mm2);\
-                    packuswb_r2r(mm2,mm0);\
-                    movq_r2m(mm0,lum[0]);
-
-#define DEINT_LINE_LUM(ptroff) \
-                    movd_m2r(lum_m4[(ptroff)],mm0);\
-                    movd_m2r(lum_m3[(ptroff)],mm1);\
-                    movd_m2r(lum_m2[(ptroff)],mm2);\
-                    movd_m2r(lum_m1[(ptroff)],mm3);\
-                    movd_m2r(lum[(ptroff)],mm4);\
-                    punpcklbw_r2r(mm7,mm0);\
-                    movd_r2m(mm2,lum_m4[(ptroff)]);\
-                    punpcklbw_r2r(mm7,mm1);\
-                    punpcklbw_r2r(mm7,mm2);\
-                    punpcklbw_r2r(mm7,mm3);\
-                    punpcklbw_r2r(mm7,mm4);\
-                    psllw_i2r(2,mm1);\
-                    psllw_i2r(1,mm2);\
-                    paddw_r2r(mm6,mm1);\
-                    psllw_i2r(2,mm3);\
-                    paddw_r2r(mm2,mm1);\
-                    paddw_r2r(mm4,mm0);\
-                    paddw_r2r(mm3,mm1);\
-                    psubusw_r2r(mm0,mm1);\
-                    psrlw_i2r(3,mm1);\
-                    packuswb_r2r(mm7,mm1);\
-                    movd_r2m(mm1,lum_m2[(ptroff)]);
-
-#else
-#include "dsputil.h"
-
-#define LINE_WITH_UV \
-                    lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
-                    cb[0]=ptr[1];cb[1]=ptr[5];\
-                    cr[0]=ptr[3];cr[1]=ptr[7];\
-                    lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
-                    cb[2]=ptr[9];cb[3]=ptr[13];\
-                    cr[2]=ptr[11];cr[3]=ptr[15];\
-                    lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
-                    cb[4]=ptr[17];cb[5]=ptr[21];\
-                    cr[4]=ptr[19];cr[5]=ptr[23];\
-                    lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];\
-                    cb[6]=ptr[25];cb[7]=ptr[29];\
-                    cr[6]=ptr[27];cr[7]=ptr[31];
-
-#define LINE_NO_UV \
-                    lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
-                    lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
-                    lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
-                    lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];
-
-#define LINE_WITHUV_AVG \
-                    sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
-                    sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
-                    sum=(ptr[1]+ptr[5]+1) >> 1;cb[0]=sum; \
-                    sum=(ptr[3]+ptr[7]+1) >> 1;cr[0]=sum; \
-                    sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
-                    sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
-                    sum=(ptr[9]+ptr[13]+1) >> 1;cb[1]=sum; \
-                    sum=(ptr[11]+ptr[15]+1) >> 1;cr[1]=sum; \
-                    sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
-                    sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
-                    sum=(ptr[17]+ptr[21]+1) >> 1;cb[2]=sum; \
-                    sum=(ptr[19]+ptr[23]+1) >> 1;cr[2]=sum; \
-                    sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
-                    sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum; \
-                    sum=(ptr[25]+ptr[29]+1) >> 1;cb[3]=sum; \
-                    sum=(ptr[27]+ptr[31]+1) >> 1;cr[3]=sum;
-
-#define LINE_NOUV_AVG \
-                    sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
-                    sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
-                    sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
-                    sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
-                    sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
-                    sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
-                    sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
-                    sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum;
-
-#define DEINT_LINE_LUM(ptroff) \
-                    sum=(-lum_m4[(ptroff)]+(lum_m3[(ptroff)]<<2)+(lum_m2[(ptroff)]<<1)+(lum_m1[(ptroff)]<<2)-lum[(ptroff)]); \
-                    lum_m4[(ptroff)]=lum_m2[(ptroff)];\
-                    lum_m2[(ptroff)]=cm[(sum+4)>>3];\
-                    sum=(-lum_m4[(ptroff)+1]+(lum_m3[(ptroff)+1]<<2)+(lum_m2[(ptroff)+1]<<1)+(lum_m1[(ptroff)+1]<<2)-lum[(ptroff)+1]); \
-                    lum_m4[(ptroff)+1]=lum_m2[(ptroff)+1];\
-                    lum_m2[(ptroff)+1]=cm[(sum+4)>>3];\
-                    sum=(-lum_m4[(ptroff)+2]+(lum_m3[(ptroff)+2]<<2)+(lum_m2[(ptroff)+2]<<1)+(lum_m1[(ptroff)+2]<<2)-lum[(ptroff)+2]); \
-                    lum_m4[(ptroff)+2]=lum_m2[(ptroff)+2];\
-                    lum_m2[(ptroff)+2]=cm[(sum+4)>>3];\
-                    sum=(-lum_m4[(ptroff)+3]+(lum_m3[(ptroff)+3]<<2)+(lum_m2[(ptroff)+3]<<1)+(lum_m1[(ptroff)+3]<<2)-lum[(ptroff)+3]); \
-                    lum_m4[(ptroff)+3]=lum_m2[(ptroff)+3];\
-                    lum_m2[(ptroff)+3]=cm[(sum+4)>>3];
-
-#endif
-
-
-/* Read two fields separately. */
-static int aiw_read_picture(VideoData *s, uint8_t *data)
-{
-    uint8_t *ptr, *lum, *cb, *cr;
-    int h;
-#ifndef HAVE_MMX
-    int sum;
-#endif
-    uint8_t* src = s->src_mem;
-    uint8_t *ptrend = &src[s->width*2];
-    lum=data;
-    cb=&lum[s->width*s->height];
-    cr=&cb[(s->width*s->height)/4];
-    if (s->deint == 0 && s->halfw == 0) {
-        while (read(s->fd,src,s->width*2) < 0) {
-            usleep(100);
-        }
-        for (h = 0; h < s->height-2; h+=2) {
-            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
-                LINE_WITH_UV
-                    }
-            read(s->fd,src,s->width*2);
-            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
-                LINE_NO_UV
-                    }
-            read(s->fd,src,s->width*2);
-        }
-        /*
-         * Do last two lines
-         */
-        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
-            LINE_WITH_UV
-                }
-        read(s->fd,src,s->width*2);
-        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
-            LINE_NO_UV
-                }
-        /* drop second field */
-        while (read(s->fd,src,s->width*2) < 0) {
-            usleep(100);
-        }
-        for (h = 0; h < s->height - 1; h++) {
-            read(s->fd,src,s->width*2);
-        }
-    } else if (s->halfw == 1) {
-#ifdef HAVE_MMX
-        mmx_t rounder;
-        mmx_t masker;
-        rounder.uw[0]=1;
-        rounder.uw[1]=1;
-        rounder.uw[2]=1;
-        rounder.uw[3]=1;
-        masker.ub[0]=0xff;
-        masker.ub[1]=0;
-        masker.ub[2]=0xff;
-        masker.ub[3]=0;
-        masker.ub[4]=0xff;
-        masker.ub[5]=0;
-        masker.ub[6]=0xff;
-        masker.ub[7]=0;
-        pxor_r2r(mm7,mm7);
-        movq_m2r(rounder,mm6);
-#endif
-        while (read(s->fd,src,s->width*4) < 0) {
-            usleep(100);
-        }
-        ptrend = &src[s->width*4];
-        for (h = 0; h < s->height-2; h+=2) {
-            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
-                LINE_WITHUV_AVG
-                    }
-            read(s->fd,src,s->width*4);
-#ifdef HAVE_MMX
-            movq_m2r(masker,mm5);
-#endif
-            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
-                LINE_NOUV_AVG
-                    }
-            read(s->fd,src,s->width*4);
-        }
-        /*
- * Do last two lines
- */
-        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
-            LINE_WITHUV_AVG
-                }
-        read(s->fd,src,s->width*4);
-#ifdef HAVE_MMX
-        movq_m2r(masker,mm5);
-#endif
-        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
-            LINE_NOUV_AVG
-                }
-        /* drop second field */
-        while (read(s->fd,src,s->width*4) < 0) {
-            usleep(100);
-        }
-        for (h = 0; h < s->height - 1; h++) {
-            read(s->fd,src,s->width*4);
-        }
-    } else {
-        uint8_t *lum_m1, *lum_m2, *lum_m3, *lum_m4;
-#ifdef HAVE_MMX
-        mmx_t rounder;
-        rounder.uw[0]=4;
-        rounder.uw[1]=4;
-        rounder.uw[2]=4;
-        rounder.uw[3]=4;
-        movq_m2r(rounder,mm6);
-        pxor_r2r(mm7,mm7);
-#else
-        uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
-#endif
-
-        /* read two fields and deinterlace them */
-        while (read(s->fd,src,s->width*2) < 0) {
-            usleep(100);
-        }
-        for (h = 0; h < (s->height/2)-2; h+=2) {
-            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
-                LINE_WITH_UV
-                    }
-            read(s->fd,src,s->width*2);
-            /* skip a luminance line - will be filled in later */
-            lum += s->width;
-            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
-                LINE_WITH_UV
-                    }
-            /* skip a luminance line - will be filled in later */
-            lum += s->width;
-            read(s->fd,src,s->width*2);
-        }
-        /*
- * Do last two lines
- */
-        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
-            LINE_WITH_UV
-                }
-        /* skip a luminance line - will be filled in later */
-        lum += s->width;
-        read(s->fd,src,s->width*2);
-        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
-            LINE_WITH_UV
-                }
-        /*
- *
- * SECOND FIELD
- *
- */
-        lum=&data[s->width];
-        while (read(s->fd,src,s->width*2) < 0) {
-            usleep(10);
-        }
-        /* First (and last) two lines not interlaced */
-        for (h = 0; h < 2; h++) {
-            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
-                LINE_NO_UV
-                    }
-            read(s->fd,src,s->width*2);
-            /* skip a luminance line */
-            lum += s->width;
-        }
-        lum_m1=&lum[-s->width];
-        lum_m2=&lum_m1[-s->width];
-        lum_m3=&lum_m2[-s->width];
-        memmove(s->lum_m4_mem,&lum_m3[-s->width],s->width);
-        for (; h < (s->height/2)-1; h++) {
-            lum_m4=s->lum_m4_mem;
-            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16,lum_m1+=16,lum_m2+=16,lum_m3+=16,lum_m4+=16) {
-                LINE_NO_UV
-
-                    DEINT_LINE_LUM(0)
-                    DEINT_LINE_LUM(4)
-                    DEINT_LINE_LUM(8)
-                    DEINT_LINE_LUM(12)
-                    }
-            read(s->fd,src,s->width*2);
-            /* skip a luminance line */
-            lum += s->width;
-            lum_m1 += s->width;
-            lum_m2 += s->width;
-            lum_m3 += s->width;
-            //                lum_m4 += s->width;
-        }
-        /*
- * Do last line
- */
-        lum_m4=s->lum_m4_mem;
-        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, lum_m1+=16, lum_m2+=16, lum_m3+=16, lum_m4+=16) {
-            LINE_NO_UV
-
-                DEINT_LINE_LUM(0)
-                DEINT_LINE_LUM(4)
-                DEINT_LINE_LUM(8)
-                DEINT_LINE_LUM(12)
-                }
-    }
-    emms_c();
-    return s->frame_size;
-}
-
-static int aiw_close(VideoData *s)
-{
-    av_freep(&s->lum_m4_mem);
-    av_freep(&s->src_mem);
-    return 0;
-}
diff --git a/libavformat/grab_bktr.c b/libavformat/grab_bktr.c
deleted file mode 100644 (file)
index 7bf51d7..0000000
+++ /dev/null
@@ -1,320 +0,0 @@
-/*
- * *BSD video grab interface
- * Copyright (c) 2002 Steve O'Hara-Smith
- * based on
- *           Linux video grab interface
- *           Copyright (c) 2000,2001 Gerard Lantau.
- * and
- *           simple_grab.c Copyright (c) 1999 Roger Hardiman
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-#include "avformat.h"
-#if defined (HAVE_DEV_BKTR_IOCTL_METEOR_H) && defined (HAVE_DEV_BKTR_IOCTL_BT848_H)
-# include <dev/bktr/ioctl_meteor.h>
-# include <dev/bktr/ioctl_bt848.h>
-#elif defined (HAVE_MACHINE_IOCTL_METEOR_H) && defined (HAVE_MACHINE_IOCTL_BT848_H)
-# include <machine/ioctl_meteor.h>
-# include <machine/ioctl_bt848.h>
-#elif defined (HAVE_DEV_VIDEO_METEOR_IOCTL_METEOR_H) && defined (HAVE_DEV_VIDEO_METEOR_IOCTL_BT848_H)
-# include <dev/video/meteor/ioctl_meteor.h>
-# include <dev/video/bktr/ioctl_bt848.h>
-#elif HAVE_DEV_IC_BT8XX_H
-# include <dev/ic/bt8xx.h>
-#endif
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/time.h>
-#include <signal.h>
-
-typedef struct {
-    int video_fd;
-    int tuner_fd;
-    int width, height;
-    int frame_rate;
-    int frame_rate_base;
-    u_int64_t per_frame;
-} VideoData;
-
-
-#define PAL 1
-#define PALBDGHI 1
-#define NTSC 2
-#define NTSCM 2
-#define SECAM 3
-#define PALN 4
-#define PALM 5
-#define NTSCJ 6
-
-/* PAL is 768 x 576. NTSC is 640 x 480 */
-#define PAL_HEIGHT 576
-#define SECAM_HEIGHT 576
-#define NTSC_HEIGHT 480
-
-#ifndef VIDEO_FORMAT
-#define VIDEO_FORMAT NTSC
-#endif
-
-static int bktr_dev[] = { METEOR_DEV0, METEOR_DEV1, METEOR_DEV2,
-    METEOR_DEV3, METEOR_DEV_SVIDEO };
-
-uint8_t *video_buf;
-size_t video_buf_size;
-u_int64_t last_frame_time;
-volatile sig_atomic_t nsignals;
-
-
-static void catchsignal(int signal)
-{
-    nsignals++;
-    return;
-}
-
-static int bktr_init(const char *video_device, int width, int height,
-    int format, int *video_fd, int *tuner_fd, int idev, double frequency)
-{
-    struct meteor_geomet geo;
-    int h_max;
-    long ioctl_frequency;
-    char *arg;
-    int c;
-    struct sigaction act, old;
-
-    if (idev < 0 || idev > 4)
-    {
-        arg = getenv ("BKTR_DEV");
-        if (arg)
-            idev = atoi (arg);
-        if (idev < 0 || idev > 4)
-            idev = 1;
-    }
-
-    if (format < 1 || format > 6)
-    {
-        arg = getenv ("BKTR_FORMAT");
-        if (arg)
-            format = atoi (arg);
-        if (format < 1 || format > 6)
-            format = VIDEO_FORMAT;
-    }
-
-    if (frequency <= 0)
-    {
-        arg = getenv ("BKTR_FREQUENCY");
-        if (arg)
-            frequency = atof (arg);
-        if (frequency <= 0)
-            frequency = 0.0;
-    }
-
-    memset(&act, 0, sizeof(act));
-    sigemptyset(&act.sa_mask);
-    act.sa_handler = catchsignal;
-    sigaction(SIGUSR1, &act, &old);
-
-    *tuner_fd = open("/dev/tuner0", O_RDONLY);
-    if (*tuner_fd < 0)
-        perror("Warning: Tuner not opened, continuing");
-
-    *video_fd = open(video_device, O_RDONLY);
-    if (*video_fd < 0) {
-        perror(video_device);
-        return -1;
-    }
-
-    geo.rows = height;
-    geo.columns = width;
-    geo.frames = 1;
-    geo.oformat = METEOR_GEO_YUV_422 | METEOR_GEO_YUV_12;
-
-    switch (format) {
-    case PAL:   h_max = PAL_HEIGHT;   c = BT848_IFORM_F_PALBDGHI; break;
-    case PALN:  h_max = PAL_HEIGHT;   c = BT848_IFORM_F_PALN;     break;
-    case PALM:  h_max = PAL_HEIGHT;   c = BT848_IFORM_F_PALM;     break;
-    case SECAM: h_max = SECAM_HEIGHT; c = BT848_IFORM_F_SECAM;    break;
-    case NTSC:  h_max = NTSC_HEIGHT;  c = BT848_IFORM_F_NTSCM;    break;
-    case NTSCJ: h_max = NTSC_HEIGHT;  c = BT848_IFORM_F_NTSCJ;    break;
-    default:    h_max = PAL_HEIGHT;   c = BT848_IFORM_F_PALBDGHI; break;
-    }
-
-    if (height <= h_max / 2)
-        geo.oformat |= METEOR_GEO_EVEN_ONLY;
-
-    if (ioctl(*video_fd, METEORSETGEO, &geo) < 0) {
-        perror("METEORSETGEO");
-        return -1;
-    }
-
-    if (ioctl(*video_fd, BT848SFMT, &c) < 0) {
-        perror("BT848SFMT");
-        return -1;
-    }
-
-    c = bktr_dev[idev];
-    if (ioctl(*video_fd, METEORSINPUT, &c) < 0) {
-        perror("METEORSINPUT");
-        return -1;
-    }
-
-    video_buf_size = width * height * 12 / 8;
-
-    video_buf = (uint8_t *)mmap((caddr_t)0, video_buf_size,
-        PROT_READ, MAP_SHARED, *video_fd, (off_t)0);
-    if (video_buf == MAP_FAILED) {
-        perror("mmap");
-        return -1;
-    }
-
-    if (frequency != 0.0) {
-        ioctl_frequency  = (unsigned long)(frequency*16);
-        if (ioctl(*tuner_fd, TVTUNER_SETFREQ, &ioctl_frequency) < 0)
-            perror("TVTUNER_SETFREQ");
-    }
-
-    c = AUDIO_UNMUTE;
-    if (ioctl(*tuner_fd, BT848_SAUDIO, &c) < 0)
-        perror("TVTUNER_SAUDIO");
-
-    c = METEOR_CAP_CONTINOUS;
-    ioctl(*video_fd, METEORCAPTUR, &c);
-
-    c = SIGUSR1;
-    ioctl(*video_fd, METEORSSIGNAL, &c);
-
-    return 0;
-}
-
-static void bktr_getframe(u_int64_t per_frame)
-{
-    u_int64_t curtime;
-
-    curtime = av_gettime();
-    if (!last_frame_time
-        || ((last_frame_time + per_frame) > curtime)) {
-        if (!usleep(last_frame_time + per_frame + per_frame / 8 - curtime)) {
-            if (!nsignals)
-                av_log(NULL, AV_LOG_INFO,
-                       "SLEPT NO signals - %d microseconds late\n",
-                       (int)(av_gettime() - last_frame_time - per_frame));
-        }
-    }
-    nsignals = 0;
-    last_frame_time = curtime;
-}
-
-
-/* note: we support only one picture read at a time */
-static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
-{
-    VideoData *s = s1->priv_data;
-
-    if (av_new_packet(pkt, video_buf_size) < 0)
-        return AVERROR(EIO);
-
-    bktr_getframe(s->per_frame);
-
-    pkt->pts = av_gettime();
-    memcpy(pkt->data, video_buf, video_buf_size);
-
-    return video_buf_size;
-}
-
-static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
-{
-    VideoData *s = s1->priv_data;
-    AVStream *st;
-    int width, height;
-    int frame_rate;
-    int frame_rate_base;
-    int format = -1;
-
-    if (ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0)
-        return -1;
-
-    width = ap->width;
-    height = ap->height;
-    frame_rate = ap->time_base.den;
-    frame_rate_base = ap->time_base.num;
-
-    st = av_new_stream(s1, 0);
-    if (!st)
-        return AVERROR(ENOMEM);
-    av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in use */
-
-    s->width = width;
-    s->height = height;
-    s->frame_rate = frame_rate;
-    s->frame_rate_base = frame_rate_base;
-    s->per_frame = ((u_int64_t)1000000 * s->frame_rate_base) / s->frame_rate;
-
-    st->codec->codec_type = CODEC_TYPE_VIDEO;
-    st->codec->pix_fmt = PIX_FMT_YUV420P;
-    st->codec->codec_id = CODEC_ID_RAWVIDEO;
-    st->codec->width = width;
-    st->codec->height = height;
-    st->codec->time_base.den = frame_rate;
-    st->codec->time_base.num = frame_rate_base;
-
-    if (ap->standard) {
-        if (!strcasecmp(ap->standard, "pal"))
-            format = PAL;
-        else if (!strcasecmp(ap->standard, "secam"))
-            format = SECAM;
-        else if (!strcasecmp(ap->standard, "ntsc"))
-            format = NTSC;
-    }
-
-    if (bktr_init(s1->filename, width, height, format,
-            &(s->video_fd), &(s->tuner_fd), -1, 0.0) < 0)
-        return AVERROR(EIO);
-
-    nsignals = 0;
-    last_frame_time = 0;
-
-    return 0;
-}
-
-static int grab_read_close(AVFormatContext *s1)
-{
-    VideoData *s = s1->priv_data;
-    int c;
-
-    c = METEOR_CAP_STOP_CONT;
-    ioctl(s->video_fd, METEORCAPTUR, &c);
-    close(s->video_fd);
-
-    c = AUDIO_MUTE;
-    ioctl(s->tuner_fd, BT848_SAUDIO, &c);
-    close(s->tuner_fd);
-
-    munmap((caddr_t)video_buf, video_buf_size);
-
-    return 0;
-}
-
-AVInputFormat bktr_demuxer = {
-    "bktr",
-    "video grab",
-    sizeof(VideoData),
-    NULL,
-    grab_read_header,
-    grab_read_packet,
-    grab_read_close,
-    .flags = AVFMT_NOFILE,
-};
diff --git a/libavformat/v4l.c b/libavformat/v4l.c
new file mode 100644 (file)
index 0000000..ac3cb0e
--- /dev/null
@@ -0,0 +1,852 @@
+/*
+ * Linux video grab interface
+ * Copyright (c) 2000,2001 Fabrice Bellard.
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "avformat.h"
+#include "dsputil.h"
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/time.h>
+#define _LINUX_TIME_H 1
+#include <linux/videodev.h>
+#include <time.h>
+
+typedef struct {
+    int fd;
+    int frame_format; /* see VIDEO_PALETTE_xxx */
+    int use_mmap;
+    int width, height;
+    int frame_rate;
+    int frame_rate_base;
+    int64_t time_frame;
+    int frame_size;
+    struct video_capability video_cap;
+    struct video_audio audio_saved;
+    uint8_t *video_buf;
+    struct video_mbuf gb_buffers;
+    struct video_mmap gb_buf;
+    int gb_frame;
+
+    /* ATI All In Wonder specific stuff */
+    /* XXX: remove and merge in libavcodec/imgconvert.c */
+    int aiw_enabled;
+    int deint;
+    int halfw;
+    uint8_t *src_mem;
+    uint8_t *lum_m4_mem;
+} VideoData;
+
+struct {
+    int palette;
+    int depth;
+    enum PixelFormat pix_fmt;
+} video_formats [] = {
+    {.palette = VIDEO_PALETTE_YUV420P, .depth = 12, .pix_fmt = PIX_FMT_YUV420P },
+    {.palette = VIDEO_PALETTE_YUV422,  .depth = 16, .pix_fmt = PIX_FMT_YUYV422 },
+    {.palette = VIDEO_PALETTE_UYVY,    .depth = 16, .pix_fmt = PIX_FMT_UYVY422 },
+    {.palette = VIDEO_PALETTE_YUYV,    .depth = 16, .pix_fmt = PIX_FMT_YUYV422 },
+    /* NOTE: v4l uses BGR24, not RGB24 */
+    {.palette = VIDEO_PALETTE_RGB24,   .depth = 24, .pix_fmt = PIX_FMT_BGR24   },
+    {.palette = VIDEO_PALETTE_RGB565,  .depth = 16, .pix_fmt = PIX_FMT_BGR565  },
+    {.palette = VIDEO_PALETTE_GREY,    .depth = 8,  .pix_fmt = PIX_FMT_GRAY8   },
+};
+
+
+static int aiw_init(VideoData *s);
+static int aiw_read_picture(VideoData *s, uint8_t *data);
+static int aiw_close(VideoData *s);
+
+static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
+{
+    VideoData *s = s1->priv_data;
+    AVStream *st;
+    int width, height;
+    int video_fd, frame_size;
+    int ret, frame_rate, frame_rate_base;
+    int desired_palette, desired_depth;
+    struct video_tuner tuner;
+    struct video_audio audio;
+    struct video_picture pict;
+    int j;
+    int vformat_num = sizeof(video_formats) / sizeof(video_formats[0]);
+
+    if (ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0) {
+        av_log(s1, AV_LOG_ERROR, "Bad capture size (%dx%d) or wrong time base (%d)\n",
+            ap->width, ap->height, ap->time_base.den);
+
+        return -1;
+    }
+
+    width = ap->width;
+    height = ap->height;
+    frame_rate      = ap->time_base.den;
+    frame_rate_base = ap->time_base.num;
+
+    if((unsigned)width > 32767 || (unsigned)height > 32767) {
+        av_log(s1, AV_LOG_ERROR, "Capture size is out of range: %dx%d\n",
+            width, height);
+
+        return -1;
+    }
+
+    st = av_new_stream(s1, 0);
+    if (!st)
+        return AVERROR(ENOMEM);
+    av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
+
+    s->width = width;
+    s->height = height;
+    s->frame_rate      = frame_rate;
+    s->frame_rate_base = frame_rate_base;
+
+    video_fd = open(s1->filename, O_RDWR);
+    if (video_fd < 0) {
+        perror(s1->filename);
+        goto fail;
+    }
+
+    if (ioctl(video_fd,VIDIOCGCAP, &s->video_cap) < 0) {
+        perror("VIDIOCGCAP");
+        goto fail;
+    }
+
+    if (!(s->video_cap.type & VID_TYPE_CAPTURE)) {
+        av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not handle capture\n");
+        goto fail;
+    }
+
+    desired_palette = -1;
+    desired_depth = -1;
+    for (j = 0; j < vformat_num; j++) {
+        if (ap->pix_fmt == video_formats[j].pix_fmt) {
+            desired_palette = video_formats[j].palette;
+            desired_depth = video_formats[j].depth;
+            break;
+        }
+    }
+
+    /* set tv standard */
+    if (ap->standard && !ioctl(video_fd, VIDIOCGTUNER, &tuner)) {
+        if (!strcasecmp(ap->standard, "pal"))
+            tuner.mode = VIDEO_MODE_PAL;
+        else if (!strcasecmp(ap->standard, "secam"))
+            tuner.mode = VIDEO_MODE_SECAM;
+        else
+            tuner.mode = VIDEO_MODE_NTSC;
+        ioctl(video_fd, VIDIOCSTUNER, &tuner);
+    }
+
+    /* unmute audio */
+    audio.audio = 0;
+    ioctl(video_fd, VIDIOCGAUDIO, &audio);
+    memcpy(&s->audio_saved, &audio, sizeof(audio));
+    audio.flags &= ~VIDEO_AUDIO_MUTE;
+    ioctl(video_fd, VIDIOCSAUDIO, &audio);
+
+    ioctl(video_fd, VIDIOCGPICT, &pict);
+#if 0
+    printf("v4l: colour=%d hue=%d brightness=%d constrast=%d whiteness=%d\n",
+           pict.colour,
+           pict.hue,
+           pict.brightness,
+           pict.contrast,
+           pict.whiteness);
+#endif
+    /* try to choose a suitable video format */
+    pict.palette = desired_palette;
+    pict.depth= desired_depth;
+    if (desired_palette == -1 || (ret = ioctl(video_fd, VIDIOCSPICT, &pict)) < 0) {
+        for (j = 0; j < vformat_num; j++) {
+            pict.palette = video_formats[j].palette;
+            pict.depth = video_formats[j].depth;
+            if (-1 != ioctl(video_fd, VIDIOCSPICT, &pict))
+                break;
+        }
+        if (j >= vformat_num)
+            goto fail1;
+    }
+
+    ret = ioctl(video_fd,VIDIOCGMBUF,&s->gb_buffers);
+    if (ret < 0) {
+        /* try to use read based access */
+        struct video_window win;
+        int val;
+
+        win.x = 0;
+        win.y = 0;
+        win.width = width;
+        win.height = height;
+        win.chromakey = -1;
+        win.flags = 0;
+
+        ioctl(video_fd, VIDIOCSWIN, &win);
+
+        s->frame_format = pict.palette;
+
+        val = 1;
+        ioctl(video_fd, VIDIOCCAPTURE, &val);
+
+        s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;
+        s->use_mmap = 0;
+
+        /* ATI All In Wonder automatic activation */
+        if (!strcmp(s->video_cap.name, "Km")) {
+            if (aiw_init(s) < 0)
+                goto fail;
+            s->aiw_enabled = 1;
+            /* force 420P format because conversion from YUV422 to YUV420P
+               is done in this driver (ugly) */
+            s->frame_format = VIDEO_PALETTE_YUV420P;
+        }
+    } else {
+        s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_SHARED,video_fd,0);
+        if ((unsigned char*)-1 == s->video_buf) {
+            s->video_buf = mmap(0,s->gb_buffers.size,PROT_READ|PROT_WRITE,MAP_PRIVATE,video_fd,0);
+            if ((unsigned char*)-1 == s->video_buf) {
+                perror("mmap");
+                goto fail;
+            }
+        }
+        s->gb_frame = 0;
+        s->time_frame = av_gettime() * s->frame_rate / s->frame_rate_base;
+
+        /* start to grab the first frame */
+        s->gb_buf.frame = s->gb_frame % s->gb_buffers.frames;
+        s->gb_buf.height = height;
+        s->gb_buf.width = width;
+        s->gb_buf.format = pict.palette;
+
+        ret = ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
+        if (ret < 0) {
+            if (errno != EAGAIN) {
+            fail1:
+                av_log(s1, AV_LOG_ERROR, "Fatal: grab device does not support suitable format\n");
+            } else {
+                av_log(s1, AV_LOG_ERROR,"Fatal: grab device does not receive any video signal\n");
+            }
+            goto fail;
+        }
+        for (j = 1; j < s->gb_buffers.frames; j++) {
+          s->gb_buf.frame = j;
+          ioctl(video_fd, VIDIOCMCAPTURE, &s->gb_buf);
+        }
+        s->frame_format = s->gb_buf.format;
+        s->use_mmap = 1;
+    }
+
+    for (j = 0; j < vformat_num; j++) {
+        if (s->frame_format == video_formats[j].palette) {
+            frame_size = width * height * video_formats[j].depth / 8;
+            st->codec->pix_fmt = video_formats[j].pix_fmt;
+            break;
+        }
+    }
+
+    if (j >= vformat_num)
+        goto fail;
+
+    s->fd = video_fd;
+    s->frame_size = frame_size;
+
+    st->codec->codec_type = CODEC_TYPE_VIDEO;
+    st->codec->codec_id = CODEC_ID_RAWVIDEO;
+    st->codec->width = width;
+    st->codec->height = height;
+    st->codec->time_base.den      = frame_rate;
+    st->codec->time_base.num = frame_rate_base;
+    st->codec->bit_rate = frame_size * 1/av_q2d(st->codec->time_base) * 8;
+
+    return 0;
+ fail:
+    if (video_fd >= 0)
+        close(video_fd);
+    av_free(st);
+    return AVERROR(EIO);
+}
+
+static int v4l_mm_read_picture(VideoData *s, uint8_t *buf)
+{
+    uint8_t *ptr;
+
+    while (ioctl(s->fd, VIDIOCSYNC, &s->gb_frame) < 0 &&
+           (errno == EAGAIN || errno == EINTR));
+
+    ptr = s->video_buf + s->gb_buffers.offsets[s->gb_frame];
+    memcpy(buf, ptr, s->frame_size);
+
+    /* Setup to capture the next frame */
+    s->gb_buf.frame = s->gb_frame;
+    if (ioctl(s->fd, VIDIOCMCAPTURE, &s->gb_buf) < 0) {
+        if (errno == EAGAIN)
+            av_log(NULL, AV_LOG_ERROR, "Cannot Sync\n");
+        else
+            perror("VIDIOCMCAPTURE");
+        return AVERROR(EIO);
+    }
+
+    /* This is now the grabbing frame */
+    s->gb_frame = (s->gb_frame + 1) % s->gb_buffers.frames;
+
+    return s->frame_size;
+}
+
+static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
+{
+    VideoData *s = s1->priv_data;
+    int64_t curtime, delay;
+    struct timespec ts;
+
+    /* Calculate the time of the next frame */
+    s->time_frame += INT64_C(1000000);
+
+    /* wait based on the frame rate */
+    for(;;) {
+        curtime = av_gettime();
+        delay = s->time_frame  * s->frame_rate_base / s->frame_rate - curtime;
+        if (delay <= 0) {
+            if (delay < INT64_C(-1000000) * s->frame_rate_base / s->frame_rate) {
+                /* printf("grabbing is %d frames late (dropping)\n", (int) -(delay / 16666)); */
+                s->time_frame += INT64_C(1000000);
+            }
+            break;
+        }
+        ts.tv_sec = delay / 1000000;
+        ts.tv_nsec = (delay % 1000000) * 1000;
+        nanosleep(&ts, NULL);
+    }
+
+    if (av_new_packet(pkt, s->frame_size) < 0)
+        return AVERROR(EIO);
+
+    pkt->pts = curtime;
+
+    /* read one frame */
+    if (s->aiw_enabled) {
+        return aiw_read_picture(s, pkt->data);
+    } else if (s->use_mmap) {
+        return v4l_mm_read_picture(s, pkt->data);
+    } else {
+        if (read(s->fd, pkt->data, pkt->size) != pkt->size)
+            return AVERROR(EIO);
+        return s->frame_size;
+    }
+}
+
+static int grab_read_close(AVFormatContext *s1)
+{
+    VideoData *s = s1->priv_data;
+
+    if (s->aiw_enabled)
+        aiw_close(s);
+
+    if (s->use_mmap)
+        munmap(s->video_buf, s->gb_buffers.size);
+
+    /* mute audio. we must force it because the BTTV driver does not
+       return its state correctly */
+    s->audio_saved.flags |= VIDEO_AUDIO_MUTE;
+    ioctl(s->fd, VIDIOCSAUDIO, &s->audio_saved);
+
+    close(s->fd);
+    return 0;
+}
+
+AVInputFormat v4l_demuxer = {
+    "video4linux",
+    "video grab",
+    sizeof(VideoData),
+    NULL,
+    grab_read_header,
+    grab_read_packet,
+    grab_read_close,
+    .flags = AVFMT_NOFILE,
+};
+
+/* All in Wonder specific stuff */
+/* XXX: remove and merge in libavcodec/imgconvert.c */
+
+static int aiw_init(VideoData *s)
+{
+    int width, height;
+
+    width = s->width;
+    height = s->height;
+
+    if ((width == s->video_cap.maxwidth && height == s->video_cap.maxheight) ||
+        (width == s->video_cap.maxwidth && height == s->video_cap.maxheight*2) ||
+        (width == s->video_cap.maxwidth/2 && height == s->video_cap.maxheight)) {
+
+        s->deint=0;
+        s->halfw=0;
+        if (height == s->video_cap.maxheight*2) s->deint=1;
+        if (width == s->video_cap.maxwidth/2) s->halfw=1;
+    } else {
+        av_log(NULL, AV_LOG_ERROR, "\nIncorrect Grab Size Supplied - Supported Sizes Are:\n");
+        av_log(NULL, AV_LOG_ERROR, " %dx%d  %dx%d %dx%d\n\n",
+                s->video_cap.maxwidth,s->video_cap.maxheight,
+                s->video_cap.maxwidth,s->video_cap.maxheight*2,
+                s->video_cap.maxwidth/2,s->video_cap.maxheight);
+        goto fail;
+    }
+
+    if (s->halfw == 0) {
+        s->src_mem = av_malloc(s->width*2);
+    } else {
+        s->src_mem = av_malloc(s->width*4);
+    }
+    if (!s->src_mem) goto fail;
+
+    s->lum_m4_mem = av_malloc(s->width);
+    if (!s->lum_m4_mem)
+        goto fail;
+    return 0;
+ fail:
+    av_freep(&s->src_mem);
+    av_freep(&s->lum_m4_mem);
+    return -1;
+}
+
+#ifdef HAVE_MMX
+#include "i386/mmx.h"
+
+#define LINE_WITH_UV \
+                    movq_m2r(ptr[0],mm0); \
+                    movq_m2r(ptr[8],mm1);  \
+                    movq_r2r(mm0, mm4); \
+                    punpcklbw_r2r(mm1,mm0); \
+                    punpckhbw_r2r(mm1,mm4); \
+                    movq_r2r(mm0,mm5); \
+                    punpcklbw_r2r(mm4,mm0); \
+                    punpckhbw_r2r(mm4,mm5); \
+                    movq_r2r(mm0,mm1); \
+                    punpcklbw_r2r(mm5,mm1); \
+                    movq_r2m(mm1,lum[0]); \
+                    movq_m2r(ptr[16],mm2); \
+                    movq_m2r(ptr[24],mm1); \
+                    movq_r2r(mm2,mm4); \
+                    punpcklbw_r2r(mm1,mm2); \
+                    punpckhbw_r2r(mm1,mm4); \
+                    movq_r2r(mm2,mm3); \
+                    punpcklbw_r2r(mm4,mm2); \
+                    punpckhbw_r2r(mm4,mm3); \
+                    movq_r2r(mm2,mm1); \
+                    punpcklbw_r2r(mm3,mm1); \
+                    movq_r2m(mm1,lum[8]); \
+                    punpckhdq_r2r(mm2,mm0); \
+                    punpckhdq_r2r(mm3,mm5); \
+                    movq_r2m(mm0,cb[0]); \
+                    movq_r2m(mm5,cr[0]);
+
+#define LINE_NO_UV \
+                    movq_m2r(ptr[0],mm0);\
+                    movq_m2r(ptr[8],mm1);\
+                    movq_r2r(mm0, mm4);\
+                    punpcklbw_r2r(mm1,mm0); \
+                    punpckhbw_r2r(mm1,mm4);\
+                    movq_r2r(mm0,mm5);\
+                    punpcklbw_r2r(mm4,mm0);\
+                    punpckhbw_r2r(mm4,mm5);\
+                    movq_r2r(mm0,mm1);\
+                    punpcklbw_r2r(mm5,mm1);\
+                    movq_r2m(mm1,lum[0]);\
+                    movq_m2r(ptr[16],mm2);\
+                    movq_m2r(ptr[24],mm1);\
+                    movq_r2r(mm2,mm4);\
+                    punpcklbw_r2r(mm1,mm2);\
+                    punpckhbw_r2r(mm1,mm4);\
+                    movq_r2r(mm2,mm3);\
+                    punpcklbw_r2r(mm4,mm2);\
+                    punpckhbw_r2r(mm4,mm3);\
+                    movq_r2r(mm2,mm1);\
+                    punpcklbw_r2r(mm3,mm1);\
+                    movq_r2m(mm1,lum[8]);
+
+#define LINE_WITHUV_AVG \
+                    movq_m2r(ptr[0], mm0);\
+                    movq_m2r(ptr[8], mm1);\
+                    movq_r2r(mm0, mm4);\
+                    punpcklbw_r2r(mm1,mm0);\
+                    punpckhbw_r2r(mm1,mm4);\
+                    movq_r2r(mm0,mm5);\
+                    punpcklbw_r2r(mm4,mm0);\
+                    punpckhbw_r2r(mm4,mm5);\
+                    movq_r2r(mm0,mm1);\
+                    movq_r2r(mm5,mm2);\
+                    punpcklbw_r2r(mm7,mm1);\
+                    punpcklbw_r2r(mm7,mm2);\
+                    paddw_r2r(mm6,mm1);\
+                    paddw_r2r(mm2,mm1);\
+                    psraw_i2r(1,mm1);\
+                    packuswb_r2r(mm7,mm1);\
+                    movd_r2m(mm1,lum[0]);\
+                    movq_m2r(ptr[16],mm2);\
+                    movq_m2r(ptr[24],mm1);\
+                    movq_r2r(mm2,mm4);\
+                    punpcklbw_r2r(mm1,mm2);\
+                    punpckhbw_r2r(mm1,mm4);\
+                    movq_r2r(mm2,mm3);\
+                    punpcklbw_r2r(mm4,mm2);\
+                    punpckhbw_r2r(mm4,mm3);\
+                    movq_r2r(mm2,mm1);\
+                    movq_r2r(mm3,mm4);\
+                    punpcklbw_r2r(mm7,mm1);\
+                    punpcklbw_r2r(mm7,mm4);\
+                    paddw_r2r(mm6,mm1);\
+                    paddw_r2r(mm4,mm1);\
+                    psraw_i2r(1,mm1);\
+                    packuswb_r2r(mm7,mm1);\
+                    movd_r2m(mm1,lum[4]);\
+                    punpckhbw_r2r(mm7,mm0);\
+                    punpckhbw_r2r(mm7,mm2);\
+                    paddw_r2r(mm6,mm0);\
+                    paddw_r2r(mm2,mm0);\
+                    psraw_i2r(1,mm0);\
+                    packuswb_r2r(mm7,mm0);\
+                    punpckhbw_r2r(mm7,mm5);\
+                    punpckhbw_r2r(mm7,mm3);\
+                    paddw_r2r(mm6,mm5);\
+                    paddw_r2r(mm3,mm5);\
+                    psraw_i2r(1,mm5);\
+                    packuswb_r2r(mm7,mm5);\
+                    movd_r2m(mm0,cb[0]);\
+                    movd_r2m(mm5,cr[0]);
+
+#define LINE_NOUV_AVG \
+                    movq_m2r(ptr[0],mm0);\
+                    movq_m2r(ptr[8],mm1);\
+                    pand_r2r(mm5,mm0);\
+                    pand_r2r(mm5,mm1);\
+                    pmaddwd_r2r(mm6,mm0);\
+                    pmaddwd_r2r(mm6,mm1);\
+                    packssdw_r2r(mm1,mm0);\
+                    paddw_r2r(mm6,mm0);\
+                    psraw_i2r(1,mm0);\
+                    movq_m2r(ptr[16],mm2);\
+                    movq_m2r(ptr[24],mm3);\
+                    pand_r2r(mm5,mm2);\
+                    pand_r2r(mm5,mm3);\
+                    pmaddwd_r2r(mm6,mm2);\
+                    pmaddwd_r2r(mm6,mm3);\
+                    packssdw_r2r(mm3,mm2);\
+                    paddw_r2r(mm6,mm2);\
+                    psraw_i2r(1,mm2);\
+                    packuswb_r2r(mm2,mm0);\
+                    movq_r2m(mm0,lum[0]);
+
+#define DEINT_LINE_LUM(ptroff) \
+                    movd_m2r(lum_m4[(ptroff)],mm0);\
+                    movd_m2r(lum_m3[(ptroff)],mm1);\
+                    movd_m2r(lum_m2[(ptroff)],mm2);\
+                    movd_m2r(lum_m1[(ptroff)],mm3);\
+                    movd_m2r(lum[(ptroff)],mm4);\
+                    punpcklbw_r2r(mm7,mm0);\
+                    movd_r2m(mm2,lum_m4[(ptroff)]);\
+                    punpcklbw_r2r(mm7,mm1);\
+                    punpcklbw_r2r(mm7,mm2);\
+                    punpcklbw_r2r(mm7,mm3);\
+                    punpcklbw_r2r(mm7,mm4);\
+                    psllw_i2r(2,mm1);\
+                    psllw_i2r(1,mm2);\
+                    paddw_r2r(mm6,mm1);\
+                    psllw_i2r(2,mm3);\
+                    paddw_r2r(mm2,mm1);\
+                    paddw_r2r(mm4,mm0);\
+                    paddw_r2r(mm3,mm1);\
+                    psubusw_r2r(mm0,mm1);\
+                    psrlw_i2r(3,mm1);\
+                    packuswb_r2r(mm7,mm1);\
+                    movd_r2m(mm1,lum_m2[(ptroff)]);
+
+#else
+#include "dsputil.h"
+
+#define LINE_WITH_UV \
+                    lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
+                    cb[0]=ptr[1];cb[1]=ptr[5];\
+                    cr[0]=ptr[3];cr[1]=ptr[7];\
+                    lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
+                    cb[2]=ptr[9];cb[3]=ptr[13];\
+                    cr[2]=ptr[11];cr[3]=ptr[15];\
+                    lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
+                    cb[4]=ptr[17];cb[5]=ptr[21];\
+                    cr[4]=ptr[19];cr[5]=ptr[23];\
+                    lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];\
+                    cb[6]=ptr[25];cb[7]=ptr[29];\
+                    cr[6]=ptr[27];cr[7]=ptr[31];
+
+#define LINE_NO_UV \
+                    lum[0]=ptr[0];lum[1]=ptr[2];lum[2]=ptr[4];lum[3]=ptr[6];\
+                    lum[4]=ptr[8];lum[5]=ptr[10];lum[6]=ptr[12];lum[7]=ptr[14];\
+                    lum[8]=ptr[16];lum[9]=ptr[18];lum[10]=ptr[20];lum[11]=ptr[22];\
+                    lum[12]=ptr[24];lum[13]=ptr[26];lum[14]=ptr[28];lum[15]=ptr[30];
+
+#define LINE_WITHUV_AVG \
+                    sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
+                    sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
+                    sum=(ptr[1]+ptr[5]+1) >> 1;cb[0]=sum; \
+                    sum=(ptr[3]+ptr[7]+1) >> 1;cr[0]=sum; \
+                    sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
+                    sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
+                    sum=(ptr[9]+ptr[13]+1) >> 1;cb[1]=sum; \
+                    sum=(ptr[11]+ptr[15]+1) >> 1;cr[1]=sum; \
+                    sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
+                    sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
+                    sum=(ptr[17]+ptr[21]+1) >> 1;cb[2]=sum; \
+                    sum=(ptr[19]+ptr[23]+1) >> 1;cr[2]=sum; \
+                    sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
+                    sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum; \
+                    sum=(ptr[25]+ptr[29]+1) >> 1;cb[3]=sum; \
+                    sum=(ptr[27]+ptr[31]+1) >> 1;cr[3]=sum;
+
+#define LINE_NOUV_AVG \
+                    sum=(ptr[0]+ptr[2]+1) >> 1;lum[0]=sum; \
+                    sum=(ptr[4]+ptr[6]+1) >> 1;lum[1]=sum; \
+                    sum=(ptr[8]+ptr[10]+1) >> 1;lum[2]=sum; \
+                    sum=(ptr[12]+ptr[14]+1) >> 1;lum[3]=sum; \
+                    sum=(ptr[16]+ptr[18]+1) >> 1;lum[4]=sum; \
+                    sum=(ptr[20]+ptr[22]+1) >> 1;lum[5]=sum; \
+                    sum=(ptr[24]+ptr[26]+1) >> 1;lum[6]=sum; \
+                    sum=(ptr[28]+ptr[30]+1) >> 1;lum[7]=sum;
+
+#define DEINT_LINE_LUM(ptroff) \
+                    sum=(-lum_m4[(ptroff)]+(lum_m3[(ptroff)]<<2)+(lum_m2[(ptroff)]<<1)+(lum_m1[(ptroff)]<<2)-lum[(ptroff)]); \
+                    lum_m4[(ptroff)]=lum_m2[(ptroff)];\
+                    lum_m2[(ptroff)]=cm[(sum+4)>>3];\
+                    sum=(-lum_m4[(ptroff)+1]+(lum_m3[(ptroff)+1]<<2)+(lum_m2[(ptroff)+1]<<1)+(lum_m1[(ptroff)+1]<<2)-lum[(ptroff)+1]); \
+                    lum_m4[(ptroff)+1]=lum_m2[(ptroff)+1];\
+                    lum_m2[(ptroff)+1]=cm[(sum+4)>>3];\
+                    sum=(-lum_m4[(ptroff)+2]+(lum_m3[(ptroff)+2]<<2)+(lum_m2[(ptroff)+2]<<1)+(lum_m1[(ptroff)+2]<<2)-lum[(ptroff)+2]); \
+                    lum_m4[(ptroff)+2]=lum_m2[(ptroff)+2];\
+                    lum_m2[(ptroff)+2]=cm[(sum+4)>>3];\
+                    sum=(-lum_m4[(ptroff)+3]+(lum_m3[(ptroff)+3]<<2)+(lum_m2[(ptroff)+3]<<1)+(lum_m1[(ptroff)+3]<<2)-lum[(ptroff)+3]); \
+                    lum_m4[(ptroff)+3]=lum_m2[(ptroff)+3];\
+                    lum_m2[(ptroff)+3]=cm[(sum+4)>>3];
+
+#endif
+
+
+/* Read two fields separately. */
+static int aiw_read_picture(VideoData *s, uint8_t *data)
+{
+    uint8_t *ptr, *lum, *cb, *cr;
+    int h;
+#ifndef HAVE_MMX
+    int sum;
+#endif
+    uint8_t* src = s->src_mem;
+    uint8_t *ptrend = &src[s->width*2];
+    lum=data;
+    cb=&lum[s->width*s->height];
+    cr=&cb[(s->width*s->height)/4];
+    if (s->deint == 0 && s->halfw == 0) {
+        while (read(s->fd,src,s->width*2) < 0) {
+            usleep(100);
+        }
+        for (h = 0; h < s->height-2; h+=2) {
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
+                LINE_WITH_UV
+                    }
+            read(s->fd,src,s->width*2);
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
+                LINE_NO_UV
+                    }
+            read(s->fd,src,s->width*2);
+        }
+        /*
+         * Do last two lines
+         */
+        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
+            LINE_WITH_UV
+                }
+        read(s->fd,src,s->width*2);
+        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
+            LINE_NO_UV
+                }
+        /* drop second field */
+        while (read(s->fd,src,s->width*2) < 0) {
+            usleep(100);
+        }
+        for (h = 0; h < s->height - 1; h++) {
+            read(s->fd,src,s->width*2);
+        }
+    } else if (s->halfw == 1) {
+#ifdef HAVE_MMX
+        mmx_t rounder;
+        mmx_t masker;
+        rounder.uw[0]=1;
+        rounder.uw[1]=1;
+        rounder.uw[2]=1;
+        rounder.uw[3]=1;
+        masker.ub[0]=0xff;
+        masker.ub[1]=0;
+        masker.ub[2]=0xff;
+        masker.ub[3]=0;
+        masker.ub[4]=0xff;
+        masker.ub[5]=0;
+        masker.ub[6]=0xff;
+        masker.ub[7]=0;
+        pxor_r2r(mm7,mm7);
+        movq_m2r(rounder,mm6);
+#endif
+        while (read(s->fd,src,s->width*4) < 0) {
+            usleep(100);
+        }
+        ptrend = &src[s->width*4];
+        for (h = 0; h < s->height-2; h+=2) {
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
+                LINE_WITHUV_AVG
+                    }
+            read(s->fd,src,s->width*4);
+#ifdef HAVE_MMX
+            movq_m2r(masker,mm5);
+#endif
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
+                LINE_NOUV_AVG
+                    }
+            read(s->fd,src,s->width*4);
+        }
+        /*
+ * Do last two lines
+ */
+        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8, cb+=4, cr+=4) {
+            LINE_WITHUV_AVG
+                }
+        read(s->fd,src,s->width*4);
+#ifdef HAVE_MMX
+        movq_m2r(masker,mm5);
+#endif
+        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=8) {
+            LINE_NOUV_AVG
+                }
+        /* drop second field */
+        while (read(s->fd,src,s->width*4) < 0) {
+            usleep(100);
+        }
+        for (h = 0; h < s->height - 1; h++) {
+            read(s->fd,src,s->width*4);
+        }
+    } else {
+        uint8_t *lum_m1, *lum_m2, *lum_m3, *lum_m4;
+#ifdef HAVE_MMX
+        mmx_t rounder;
+        rounder.uw[0]=4;
+        rounder.uw[1]=4;
+        rounder.uw[2]=4;
+        rounder.uw[3]=4;
+        movq_m2r(rounder,mm6);
+        pxor_r2r(mm7,mm7);
+#else
+        uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
+#endif
+
+        /* read two fields and deinterlace them */
+        while (read(s->fd,src,s->width*2) < 0) {
+            usleep(100);
+        }
+        for (h = 0; h < (s->height/2)-2; h+=2) {
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
+                LINE_WITH_UV
+                    }
+            read(s->fd,src,s->width*2);
+            /* skip a luminance line - will be filled in later */
+            lum += s->width;
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
+                LINE_WITH_UV
+                    }
+            /* skip a luminance line - will be filled in later */
+            lum += s->width;
+            read(s->fd,src,s->width*2);
+        }
+        /*
+ * Do last two lines
+ */
+        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
+            LINE_WITH_UV
+                }
+        /* skip a luminance line - will be filled in later */
+        lum += s->width;
+        read(s->fd,src,s->width*2);
+        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, cb+=8, cr+=8) {
+            LINE_WITH_UV
+                }
+        /*
+ *
+ * SECOND FIELD
+ *
+ */
+        lum=&data[s->width];
+        while (read(s->fd,src,s->width*2) < 0) {
+            usleep(10);
+        }
+        /* First (and last) two lines not interlaced */
+        for (h = 0; h < 2; h++) {
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16) {
+                LINE_NO_UV
+                    }
+            read(s->fd,src,s->width*2);
+            /* skip a luminance line */
+            lum += s->width;
+        }
+        lum_m1=&lum[-s->width];
+        lum_m2=&lum_m1[-s->width];
+        lum_m3=&lum_m2[-s->width];
+        memmove(s->lum_m4_mem,&lum_m3[-s->width],s->width);
+        for (; h < (s->height/2)-1; h++) {
+            lum_m4=s->lum_m4_mem;
+            for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16,lum_m1+=16,lum_m2+=16,lum_m3+=16,lum_m4+=16) {
+                LINE_NO_UV
+
+                    DEINT_LINE_LUM(0)
+                    DEINT_LINE_LUM(4)
+                    DEINT_LINE_LUM(8)
+                    DEINT_LINE_LUM(12)
+                    }
+            read(s->fd,src,s->width*2);
+            /* skip a luminance line */
+            lum += s->width;
+            lum_m1 += s->width;
+            lum_m2 += s->width;
+            lum_m3 += s->width;
+            //                lum_m4 += s->width;
+        }
+        /*
+ * Do last line
+ */
+        lum_m4=s->lum_m4_mem;
+        for (ptr = &src[0]; ptr < ptrend; ptr+=32, lum+=16, lum_m1+=16, lum_m2+=16, lum_m3+=16, lum_m4+=16) {
+            LINE_NO_UV
+
+                DEINT_LINE_LUM(0)
+                DEINT_LINE_LUM(4)
+                DEINT_LINE_LUM(8)
+                DEINT_LINE_LUM(12)
+                }
+    }
+    emms_c();
+    return s->frame_size;
+}
+
+static int aiw_close(VideoData *s)
+{
+    av_freep(&s->lum_m4_mem);
+    av_freep(&s->src_mem);
+    return 0;
+}