[Ffmpeg-devel] [patch] *BSD bktr grab support
Jacob Meuser
jakemsr
Wed Jun 8 07:03:54 CEST 2005
On Tue, Jun 07, 2005 at 10:20:04PM +0200, Michael Niedermayer wrote:
> Hi
>
> On Tuesday 07 June 2005 21:54, Jacob Meuser wrote:
> > On Tue, Jun 07, 2005 at 09:37:20PM +0200, Michael Niedermayer wrote:
> > > Hi
> > >
> > > On Tuesday 07 June 2005 21:17, Jacob Meuser wrote:
> > > > On Sun, May 22, 2005 at 11:04:13AM +0200, Michael Niedermayer wrote:
> > > > > Hi
> > > > >
> > > > > On Thursday 19 May 2005 05:42, Jacob Meuser wrote:
> > > > > > here is the cleaned up patch for gab support for the bktr driver
> > > > > > found on *BSD systems.
> > > > > >
> > > > > > the license is now LGPL, I changed the tabs to 4 spaces, added a
> > > > > > couple comments, and took out an #if 0 block and a CVS Id
> > > > > > that were accidently left in the last version.
> > > > > >
> > > > > >
> > > > > > --- libavformat/grab.c 30 Apr 2005 21:43:58 -0000 1.34
> > > > > > +++ libavformat/grab.c 19 May 2005 03:37:10 -0000
> > > > > > @@ -364,7 +364,7 @@
> > > > > > }
> > > > > >
> > > > > > static AVInputFormat video_grab_device_format = {
> > > > > > - "video4linux",
> > > > > > + "video_device",
> > > > >
> > > > > is it theoretically impossible for v4l and bktr to coexist on the
> > > > > same machine?
> > >
> > > [...]
> > >
> > > > sorry for the delay. I have fixed the above issues. new patch
> > >
> > > hmm, doesnt seem so ...
> >
> > I'm not sure what would be the best as far as ffmpeg is concerned.
> >
> > like this in ffmpeg.c ~ line 259?
> >
> > #ifdef CONFIG_V4L
> > static char *video_grab_format = "video4linux";
> > #else
> > #ifdef CONFIG_BKTR
> > static char *video_grab_format = "bktr";
> > #endif
> > #endif
>
> ok
I did not do it exactly like this, because that changes the behaviour
with regards to V4L.
>
> >
> > does a way to specify video_grab_format at runtime already exist?
> > I couldn't find how that would happen. would that need to be
> > added? I would think so, or there is no way to use both v4l and
> > bktr in the same ffmpeg binary, and thus the "conflict" isn't really
> > solved.
>
> that could be added later, i was just against having 2 different video grab
> systems with the same name and changing an existing name (might break
> existing code)
this time, there are no changes, only additions.
I think the tricky part of making both available at the same time will
be video_grab_init(). I suppose there could be video_grab_init_v4l()
and likewise for bktr?
--
<jakemsr at jakemsr.com>
-------------- next part --------------
Index: configure
===================================================================
RCS file: /cvsroot/ffmpeg/ffmpeg/configure,v
retrieving revision 1.185
diff -u -r1.185 configure
--- configure 29 May 2005 22:11:05 -0000 1.185
+++ configure 8 Jun 2005 04:54:51 -0000
@@ -57,6 +57,7 @@
echo " --disable-audio-oss disable OSS audio support [default=no]"
echo " --disable-audio-beos disable BeOS audio support [default=no]"
echo " --disable-v4l disable video4linux grabbing [default=no]"
+echo " --disable-bktr disable bktr video grabbing [default=no]"
echo " --disable-dv1394 disable DV1394 grabbing [default=no]"
echo " --disable-network disable network support [default=no]"
echo " --disable-zlib disable zlib [default=no]"
@@ -153,6 +154,7 @@
esac
gprof="no"
v4l="yes"
+bktr="no"
audio_oss="yes"
audio_beos="no"
dv1394="yes"
@@ -258,6 +260,7 @@
;;
NetBSD)
v4l="no"
+bktr="yes"
audio_oss="yes"
dv1394="no"
make="gmake"
@@ -269,6 +272,7 @@
;;
OpenBSD)
v4l="no"
+bktr="yes"
audio_oss="yes"
dv1394="no"
make="gmake"
@@ -279,6 +283,7 @@
;;
FreeBSD)
v4l="no"
+bktr="yes"
audio_oss="yes"
dv1394="no"
make="gmake"
@@ -287,6 +292,7 @@
;;
BSD/OS)
v4l="no"
+bktr="yes"
audio_oss="yes"
dv1394="no"
extralibs="-lpoll -lgnugetopt -lm"
@@ -431,6 +437,8 @@
;;
--disable-v4l) v4l="no"
;;
+ --disable-bktr) bktr="no"
+ ;;
--disable-audio-oss) audio_oss="no"
;;
--disable-audio-beos) audio_beos="no"
@@ -769,6 +777,7 @@
if test "$mingw32" = "yes" ; then
v4l="no"
+ bktr="no"
audio_oss="no"
dv1394="no"
dc1394="no"
@@ -1386,6 +1395,11 @@
echo "CONFIG_VIDEO4LINUX=yes" >> config.mak
fi
+if test "$bktr" = "yes" ; then
+ echo "#define CONFIG_BKTR 1" >> $TMPH
+ echo "CONFIG_BKTR=yes" >> config.mak
+fi
+
if test "$dv1394" = "yes" ; then
echo "#define CONFIG_DV1394 1" >> $TMPH
echo "CONFIG_DV1394=yes" >> config.mak
Index: ffmpeg.c
===================================================================
RCS file: /cvsroot/ffmpeg/ffmpeg/ffmpeg.c,v
retrieving revision 1.333
diff -u -r1.333 ffmpeg.c
--- ffmpeg.c 7 Jun 2005 21:53:56 -0000 1.333
+++ ffmpeg.c 8 Jun 2005 04:55:00 -0000
@@ -256,7 +256,11 @@
static int rate_emu = 0;
+#ifdef CONFIG_BKTR
+static char *video_grab_format = "bktr";
+#else
static char *video_grab_format = "video4linux";
+#endif
static char *video_device = NULL;
static char *grab_device = NULL;
static int video_channel = 0;
Index: libavformat/Makefile
===================================================================
RCS file: /cvsroot/ffmpeg/ffmpeg/libavformat/Makefile,v
retrieving revision 1.91
diff -u -r1.91 Makefile
--- libavformat/Makefile 22 May 2005 23:58:58 -0000 1.91
+++ libavformat/Makefile 8 Jun 2005 04:55:01 -0000
@@ -40,6 +40,10 @@
OBJS+= grab.o
endif
+ifeq ($(CONFIG_BKTR),yes)
+OBJS+= grab_bktr.o
+endif
+
ifeq ($(CONFIG_DV1394),yes)
OBJS+= dv1394.o
endif
Index: libavformat/allformats.c
===================================================================
RCS file: /cvsroot/ffmpeg/ffmpeg/libavformat/allformats.c,v
retrieving revision 1.46
diff -u -r1.46 allformats.c
--- libavformat/allformats.c 9 Apr 2005 15:32:58 -0000 1.46
+++ libavformat/allformats.c 8 Jun 2005 04:55:01 -0000
@@ -88,7 +88,7 @@
#endif
ffm_init();
-#ifdef CONFIG_VIDEO4LINUX
+#if defined(CONFIG_VIDEO4LINUX) || defined(CONFIG_BKTR)
video_grab_init();
#endif
#if defined(CONFIG_AUDIO_OSS) || defined(CONFIG_AUDIO_BEOS)
Index: libavformat/avformat.h
===================================================================
RCS file: /cvsroot/ffmpeg/ffmpeg/libavformat/avformat.h,v
retrieving revision 1.121
diff -u -r1.121 avformat.h
--- libavformat/avformat.h 3 Jun 2005 14:02:29 -0000 1.121
+++ libavformat/avformat.h 8 Jun 2005 04:55:01 -0000
@@ -107,7 +107,7 @@
enum PixelFormat pix_fmt;
struct AVImageFormat *image_format;
int channel; /* used to select dv channel */
- const char *device; /* video4linux, audio or DV device */
+ const char *device; /* video, audio or DV device */
const char *standard; /* tv standard, NTSC, PAL, SECAM */
int mpeg2ts_raw:1; /* force raw MPEG2 transport stream output, if possible */
int mpeg2ts_compute_pcr:1; /* compute exact PCR for each transport
Index: libavformat/grab_bktr.c
===================================================================
RCS file: libavformat/grab_bktr.c
diff -N libavformat/grab_bktr.c
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ libavformat/grab_bktr.c 8 Jun 2005 04:55:01 -0000
@@ -0,0 +1,331 @@
+/*
+ * *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 library 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 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser 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 "avformat.h"
+#if defined(__FreeBSD__)
+# if __FreeBSD__ >= 502100
+# include <dev/bktr/ioctl_meteor.h>
+# include <dev/bktr/ioctl_bt848.h>
+# else
+# include <machine/ioctl_meteor.h>
+# include <machine/ioctl_bt848.h>
+# endif
+#elseif defined(__DragonFly__)
+# include <dev/video/meteor/ioctl_meteor.h>
+# include <dev/video/bktr/ioctl_bt848.h>
+#else
+# 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 -EIO;
+
+ bktr_getframe(s->per_frame);
+
+ pkt->pts = av_gettime() & ((1LL << 48) - 1);
+ 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;
+ const char *video_device;
+
+ if (!ap || 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;
+
+ video_device = ap->device;
+ if (!video_device)
+ video_device = "/dev/bktr0";
+
+ st = av_new_stream(s1, 0);
+ if (!st)
+ return -ENOMEM;
+ av_set_pts_info(st, 48, 1, 1000000); /* 48 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(video_device, width, height, format,
+ &(s->video_fd), &(s->tuner_fd), -1, 0.0) < 0)
+ return -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 video_grab_device_format = {
+ "bktr",
+ "video grab",
+ sizeof(VideoData),
+ NULL,
+ grab_read_header,
+ grab_read_packet,
+ grab_read_close,
+ .flags = AVFMT_NOFILE,
+};
+
+int video_grab_init(void)
+{
+ av_register_input_format(&video_grab_device_format);
+ return 0;
+}
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