Commit 0a7b514f authored by Luca Abeni's avatar Luca Abeni Committed by Diego Biurrun
Browse files

video4linux2 input support

patch by Luca Abeni, lucabe72 $$at$$ email $$dot$$ it

Originally committed as revision 4916 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent b5bba459
......@@ -66,6 +66,7 @@ echo " --disable-altivec disable AltiVec usage"
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-v4l2 disable video4linux2 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]"
......@@ -183,6 +184,7 @@ case "$cpu" in
esac
gprof="no"
v4l="yes"
v4l2="yes"
bktr="no"
audio_oss="yes"
audio_beos="no"
......@@ -276,6 +278,7 @@ SHFLAGS=-nostart
# disable Linux things
audio_oss="no"
v4l="no"
v4l2="no"
dv1394="no"
# enable BeOS things
audio_beos="yes"
......@@ -290,6 +293,7 @@ extralibs="-lnet"
fi ;;
SunOS)
v4l="no"
v4l2="no"
audio_oss="no"
dv1394="no"
make="gmake"
......@@ -300,6 +304,7 @@ extralibs="$extralibs -lsocket -lnsl"
;;
NetBSD)
v4l="no"
v4l2="no"
bktr="yes"
audio_oss="yes"
dv1394="no"
......@@ -312,6 +317,7 @@ esac
;;
OpenBSD)
v4l="no"
v4l2="no"
bktr="yes"
audio_oss="yes"
dv1394="no"
......@@ -323,6 +329,7 @@ extralibs="$extralibs -lossaudio"
;;
FreeBSD)
v4l="no"
v4l2="no"
bktr="yes"
audio_oss="yes"
dv1394="no"
......@@ -332,6 +339,7 @@ LDFLAGS="$LDFLAGS -export-dynamic -pthread"
;;
BSD/OS)
v4l="no"
v4l2="no"
bktr="yes"
audio_oss="yes"
dv1394="no"
......@@ -343,6 +351,7 @@ installstrip=""
Darwin)
cc="cc"
v4l="no"
v4l2="no"
audio_oss="no"
dv1394="no"
ffserver="no"
......@@ -364,6 +373,7 @@ mingw32="yes"
;;
CYGWIN*)
v4l="no"
v4l2="no"
audio_oss="yes"
dv1394="no"
vhook="no"
......@@ -377,6 +387,7 @@ LDFLAGS="$LDFLAGS -rdynamic"
IRIX*)
ranlib="echo ignoring ranlib"
v4l="no"
v4l2="no"
audio_oss="no"
make="gmake"
;;
......@@ -397,6 +408,7 @@ EXESUF=".exe"
extralibs=""
pkg_requires=""
v4l="no"
v4l2="no"
audio_oss="no"
dv1394="no"
network="no"
......@@ -486,6 +498,8 @@ for opt do
;;
--disable-v4l) v4l="no"
;;
--disable-v4l2) v4l2="no"
;;
--disable-bktr) bktr="no"
;;
--disable-audio-oss) audio_oss="no"
......@@ -900,6 +914,7 @@ EOF
exit 1
fi
v4l="no"
v4l2="no"
bktr="no"
audio_oss="no"
dv1394="no"
......@@ -1613,6 +1628,11 @@ if test "$v4l" = "yes" ; then
echo "CONFIG_VIDEO4LINUX=yes" >> config.mak
fi
if test "$v4l2" = "yes" ; then
echo "#define CONFIG_VIDEO4LINUX2 1" >> $TMPH
echo "CONFIG_VIDEO4LINUX2=yes" >> config.mak
fi
if test "$bktr" = "yes" ; then
echo "#define CONFIG_BKTR 1" >> $TMPH
echo "CONFIG_BKTR=yes" >> config.mak
......
......@@ -213,8 +213,12 @@ static int rate_emu = 0;
#ifdef CONFIG_BKTR
static char *video_grab_format = "bktr";
#else
#ifdef CONFIG_VIDEO4LINUX2
static char *video_grab_format = "video4linux2";
#else
static char *video_grab_format = "video4linux";
#endif
#endif
static char *video_device = NULL;
static char *grab_device = NULL;
static int video_channel = 0;
......
......@@ -50,6 +50,10 @@ ifeq ($(CONFIG_VIDEO4LINUX),yes)
OBJS+= grab.o
endif
ifeq ($(CONFIG_VIDEO4LINUX2),yes)
OBJS+= v4l2.o
endif
ifeq ($(CONFIG_BKTR),yes)
OBJS+= grab_bktr.o
endif
......
......@@ -89,6 +89,9 @@ void av_register_all(void)
#endif
ffm_init();
#if defined(CONFIG_VIDEO4LINUX2)
v4l2_init();
#endif
#if defined(CONFIG_VIDEO4LINUX) || defined(CONFIG_BKTR)
video_grab_init();
#endif
......
......@@ -239,7 +239,7 @@ static int audio_read_header(AVFormatContext *s1, AVFormatParameters *ap)
st->codec->sample_rate = s->sample_rate;
st->codec->channels = s->channels;
av_set_pts_info(st, 48, 1, 1000000); /* 48 bits pts in us */
av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
return 0;
}
......@@ -271,7 +271,7 @@ static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt)
if (ret == -1 && (errno == EAGAIN || errno == EINTR)) {
av_free_packet(pkt);
pkt->size = 0;
pkt->pts = av_gettime() & ((1LL << 48) - 1);
pkt->pts = av_gettime();
return 0;
}
if (!(ret == 0 || (ret == -1 && (errno == EAGAIN || errno == EINTR)))) {
......@@ -291,7 +291,7 @@ static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt)
cur_time -= (bdelay * 1000000LL) / (s->sample_rate * s->channels);
/* convert to wanted units */
pkt->pts = cur_time & ((1LL << 48) - 1);
pkt->pts = cur_time;
if (s->flip_left && s->channels == 2) {
int i;
......
......@@ -82,7 +82,7 @@ static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
st = av_new_stream(s1, 0);
if (!st)
return -ENOMEM;
av_set_pts_info(st, 48, 1, 1000000); /* 48 bits pts in us */
av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
s->width = width;
s->height = height;
......@@ -331,7 +331,7 @@ static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
if (av_new_packet(pkt, s->frame_size) < 0)
return AVERROR_IO;
pkt->pts = curtime & ((1LL << 48) - 1);
pkt->pts = curtime;
/* read one frame */
if (s->aiw_enabled) {
......
......@@ -229,7 +229,7 @@ static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
bktr_getframe(s->per_frame);
pkt->pts = av_gettime() & ((1LL << 48) - 1);
pkt->pts = av_gettime();
memcpy(pkt->data, video_buf, video_buf_size);
return video_buf_size;
......@@ -260,7 +260,7 @@ static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
st = av_new_stream(s1, 0);
if (!st)
return -ENOMEM;
av_set_pts_info(st, 48, 1, 1000000); /* 48 bits pts in use */
av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in use */
s->width = width;
s->height = height;
......
/*
* Video4Linux2 grab interface
* Copyright (c) 2000,2001 Fabrice Bellard.
* Copyright (c) 2006 Luca Abeni.
*
* Part of this file is based on the V4L2 video capture example
* (http://v4l2spec.bytesex.org/v4l2spec/capture.c)
*
* Thanks to Michael Niedermayer for providing the mapping between
* V4L2_PIX_FMT_* and PIX_FMT_*
*
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.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>
static const int desired_video_buffers = 256;
enum io_method {
io_read,
io_mmap,
io_userptr
};
struct video_data {
int fd;
int frame_format; /* V4L2_PIX_FMT_* */
enum io_method io_method;
int width, height;
int frame_rate;
int frame_rate_base;
int frame_size;
int top_field_first;
int buffers;
void **buf_start;
unsigned int *buf_len;
};
struct fmt_map {
enum PixelFormat ff_fmt;
int32_t v4l2_fmt;
};
static struct fmt_map fmt_conversion_table[] = {
{
.ff_fmt = PIX_FMT_YUV420P,
.v4l2_fmt = V4L2_PIX_FMT_YUV420,
},
{
.ff_fmt = PIX_FMT_YUV422P,
.v4l2_fmt = V4L2_PIX_FMT_YUV422P,
},
{
.ff_fmt = PIX_FMT_YUV422,
.v4l2_fmt = V4L2_PIX_FMT_YUYV,
},
{
.ff_fmt = PIX_FMT_UYVY422,
.v4l2_fmt = V4L2_PIX_FMT_UYVY,
},
{
.ff_fmt = PIX_FMT_YUV411P,
.v4l2_fmt = V4L2_PIX_FMT_YUV411P,
},
{
.ff_fmt = PIX_FMT_YUV410P,
.v4l2_fmt = V4L2_PIX_FMT_YUV410,
},
{
.ff_fmt = PIX_FMT_BGR24,
.v4l2_fmt = V4L2_PIX_FMT_BGR24,
},
{
.ff_fmt = PIX_FMT_RGB24,
.v4l2_fmt = V4L2_PIX_FMT_RGB24,
},
/*
{
.ff_fmt = PIX_FMT_RGBA32,
.v4l2_fmt = V4L2_PIX_FMT_BGR32,
},
*/
{
.ff_fmt = PIX_FMT_GRAY8,
.v4l2_fmt = V4L2_PIX_FMT_GREY,
},
};
static int device_open(const char *devname, uint32_t *capabilities)
{
struct v4l2_capability cap;
int fd;
int res;
fd = open(devname, O_RDWR /*| O_NONBLOCK*/, 0);
if (fd < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot open video device %s : %s\n",
devname, strerror(errno));
return -1;
}
res = ioctl(fd, VIDIOC_QUERYCAP, &cap);
if (res < 0) {
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QUERYCAP): %s\n",
strerror(errno));
return -1;
}
if ((cap.capabilities & V4L2_CAP_VIDEO_CAPTURE) == 0) {
av_log(NULL, AV_LOG_ERROR, "Not a video capture device\n");
return -1;
}
*capabilities = cap.capabilities;
return fd;
}
static int device_init(int fd, int width, int height, int pix_fmt)
{
struct v4l2_format fmt;
memset(&fmt, 0, sizeof(struct v4l2_format));
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
fmt.fmt.pix.width = width;
fmt.fmt.pix.height = height;
fmt.fmt.pix.pixelformat = pix_fmt;
fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
return ioctl (fd, VIDIOC_S_FMT, &fmt);
}
static int first_field(int fd)
{
int res;
v4l2_std_id std;
res = ioctl(fd, VIDIOC_G_STD, &std);
if (res < 0) {
return 0;
}
if (std & V4L2_STD_NTSC) {
return 0;
}
return 1;
}
static uint32_t fmt_ff2v4l(enum PixelFormat pix_fmt)
{
int i;
for (i = 0; i < sizeof(fmt_conversion_table) / sizeof(struct fmt_map); i++) {
if (fmt_conversion_table[i].ff_fmt == pix_fmt) {
return fmt_conversion_table[i].v4l2_fmt;
}
}
return 0;
}
static enum PixelFormat fmt_v4l2ff(uint32_t pix_fmt)
{
int i;
for (i = 0; i < sizeof(fmt_conversion_table) / sizeof(struct fmt_map); i++) {
if (fmt_conversion_table[i].v4l2_fmt == pix_fmt) {
return fmt_conversion_table[i].ff_fmt;
}
}
return -1;
}
static int mmap_init(struct video_data *s)
{
struct v4l2_requestbuffers req;
int i, res;
memset(&req, 0, sizeof(struct v4l2_requestbuffers));
req.count = desired_video_buffers;
req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
req.memory = V4L2_MEMORY_MMAP;
res = ioctl (s->fd, VIDIOC_REQBUFS, &req);
if (res < 0) {
if (errno == EINVAL) {
av_log(NULL, AV_LOG_ERROR, "Device does not support mmap\n");
} else {
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_REQBUFS)\n");
}
return -1;
}
if (req.count < 2) {
av_log(NULL, AV_LOG_ERROR, "Insufficient buffer memory\n");
return -1;
}
s->buffers = req.count;
s->buf_start = av_malloc(sizeof(void *) * s->buffers);
if (s->buf_start == NULL) {
av_log(NULL, AV_LOG_ERROR, "Cannot allocate buffer pointers\n");
return -1;
}
s->buf_len = av_malloc(sizeof(unsigned int) * s->buffers);
if (s->buf_len == NULL) {
av_log(NULL, AV_LOG_ERROR, "Cannot allocate buffer sizes\n");
av_free(s->buf_start);
return -1;
}
for (i = 0; i < req.count; i++) {
struct v4l2_buffer buf;
memset(&buf, 0, sizeof(struct v4l2_buffer));
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = i;
res = ioctl (s->fd, VIDIOC_QUERYBUF, &buf);
if (res < 0) {
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QUERYBUF)\n");
return -1;
}
s->buf_len[i] = buf.length;
if (s->buf_len[i] < s->frame_size) {
av_log(NULL, AV_LOG_ERROR, "Buffer len [%d] = %d != %d\n", i, s->buf_len[i], s->frame_size);
return -1;
}
s->buf_start[i] = mmap (NULL, buf.length,
PROT_READ | PROT_WRITE, MAP_SHARED, s->fd, buf.m.offset);
if (s->buf_start[i] == MAP_FAILED) {
av_log(NULL, AV_LOG_ERROR, "mmap: %s\n", strerror(errno));
return -1;
}
}
return 0;
}
static int read_init(struct video_data *s)
{
return -1;
}
static int mmap_read_frame(struct video_data *s, void *frame, int64_t *ts)
{
struct v4l2_buffer buf;
int res;
memset(&buf, 0, sizeof(struct v4l2_buffer));
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
/* FIXME: Some special treatment might be needed in case of loss of signal... */
while ((res = ioctl(s->fd, VIDIOC_DQBUF, &buf)) < 0 &&
((errno == EAGAIN) || (errno == EINTR)));
if (res < 0) {
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_DQBUF): %s\n", strerror(errno));
return -1;
}
assert (buf.index < s->buffers);
assert(buf.bytesused == s->frame_size);
/* Image is at s->buff_start[buf.index] */
memcpy(frame, s->buf_start[buf.index], buf.bytesused);
*ts = buf.timestamp.tv_sec * int64_t_C(1000000) + buf.timestamp.tv_usec;
res = ioctl (s->fd, VIDIOC_QBUF, &buf);
if (res < 0) {
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF)\n");
return -1;
}
return s->buf_len[buf.index];
}
static int read_frame(struct video_data *s, void *frame, int64_t *ts)
{
return -1;
}
static int mmap_start(struct video_data *s)
{
enum v4l2_buf_type type;
int i, res;
for (i = 0; i < s->buffers; i++) {
struct v4l2_buffer buf;
memset(&buf, 0, sizeof(struct v4l2_buffer));
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = i;
res = ioctl (s->fd, VIDIOC_QBUF, &buf);
if (res < 0) {
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF): %s\n", strerror(errno));
return -1;
}
}
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
res = ioctl (s->fd, VIDIOC_STREAMON, &type);
if (res < 0) {
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_STREAMON): %s\n", strerror(errno));
return -1;
}
return 0;
}
static void mmap_close(struct video_data *s)
{
enum v4l2_buf_type type;
int i;
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
/* We do not check for the result, because we could
* not do anything about it anyway...
*/
ioctl(s->fd, VIDIOC_STREAMOFF, &type);
for (i = 0; i < s->buffers; i++) {
munmap(s->buf_start[i], s->buf_len[i]);
}
av_free(s->buf_start);
av_free(s->buf_len);
}
static int v4l2_read_header(AVFormatContext *s1, AVFormatParameters *ap)
{
struct video_data *s = s1->priv_data;
AVStream *st;
int width, height;
int res, frame_rate, frame_rate_base;
uint32_t desired_format, capabilities;
const char *video_device;
if (!ap || ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0) {
av_log(s1, AV_LOG_ERROR, "Missing/Wrong parameters\n");
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, "Wrong size %dx%d\n", width, height);
return -1;
}
st = av_new_stream(s1, 0);
if (!st) {
return -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_device = ap->device;
if (!video_device) {
video_device = "/dev/video";
}
capabilities = 0;
s->fd = device_open(video_device, &capabilities);
if (s->fd < 0) {
av_free(st);
return AVERROR_IO;
}
av_log(s1, AV_LOG_ERROR, "[%d]Capabilities: %x\n", s->fd, capabilities);
desired_format = fmt_ff2v4l(ap->pix_fmt);
if (desired_format == 0 || (device_init(s->fd, width, height, desired_format) < 0)) {