* V4L2_PIX_FMT_* and PIX_FMT_*
*
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#endif
#include <time.h>
#include <strings.h>
+#include "libavutil/imgutils.h"
static const int desired_video_buffers = 256;
};
static struct fmt_map fmt_conversion_table[] = {
- {
- .ff_fmt = PIX_FMT_YUV420P,
- .codec_id = CODEC_ID_RAWVIDEO,
- .v4l2_fmt = V4L2_PIX_FMT_YUV420,
- },
- {
- .ff_fmt = PIX_FMT_YUV422P,
- .codec_id = CODEC_ID_RAWVIDEO,
- .v4l2_fmt = V4L2_PIX_FMT_YUV422P,
- },
- {
- .ff_fmt = PIX_FMT_YUYV422,
- .codec_id = CODEC_ID_RAWVIDEO,
- .v4l2_fmt = V4L2_PIX_FMT_YUYV,
- },
- {
- .ff_fmt = PIX_FMT_UYVY422,
- .codec_id = CODEC_ID_RAWVIDEO,
- .v4l2_fmt = V4L2_PIX_FMT_UYVY,
- },
- {
- .ff_fmt = PIX_FMT_YUV411P,
- .codec_id = CODEC_ID_RAWVIDEO,
- .v4l2_fmt = V4L2_PIX_FMT_YUV411P,
- },
- {
- .ff_fmt = PIX_FMT_YUV410P,
- .codec_id = CODEC_ID_RAWVIDEO,
- .v4l2_fmt = V4L2_PIX_FMT_YUV410,
- },
- {
- .ff_fmt = PIX_FMT_RGB555,
- .codec_id = CODEC_ID_RAWVIDEO,
- .v4l2_fmt = V4L2_PIX_FMT_RGB555,
- },
- {
- .ff_fmt = PIX_FMT_RGB565,
- .codec_id = CODEC_ID_RAWVIDEO,
- .v4l2_fmt = V4L2_PIX_FMT_RGB565,
- },
- {
- .ff_fmt = PIX_FMT_BGR24,
- .codec_id = CODEC_ID_RAWVIDEO,
- .v4l2_fmt = V4L2_PIX_FMT_BGR24,
- },
- {
- .ff_fmt = PIX_FMT_RGB24,
- .codec_id = CODEC_ID_RAWVIDEO,
- .v4l2_fmt = V4L2_PIX_FMT_RGB24,
- },
- {
- .ff_fmt = PIX_FMT_BGRA,
- .codec_id = CODEC_ID_RAWVIDEO,
- .v4l2_fmt = V4L2_PIX_FMT_BGR32,
- },
- {
- .ff_fmt = PIX_FMT_GRAY8,
- .codec_id = CODEC_ID_RAWVIDEO,
- .v4l2_fmt = V4L2_PIX_FMT_GREY,
- },
- {
- .ff_fmt = PIX_FMT_NONE,
- .codec_id = CODEC_ID_MJPEG,
- .v4l2_fmt = V4L2_PIX_FMT_MJPEG,
- },
- {
- .ff_fmt = PIX_FMT_NONE,
- .codec_id = CODEC_ID_MJPEG,
- .v4l2_fmt = V4L2_PIX_FMT_JPEG,
- },
+ //ff_fmt codec_id v4l2_fmt
+ { PIX_FMT_YUV420P, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV420 },
+ { PIX_FMT_YUV422P, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV422P },
+ { PIX_FMT_YUYV422, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUYV },
+ { PIX_FMT_UYVY422, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_UYVY },
+ { PIX_FMT_YUV411P, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV411P },
+ { PIX_FMT_YUV410P, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV410 },
+ { PIX_FMT_RGB555, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB555 },
+ { PIX_FMT_RGB565, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB565 },
+ { PIX_FMT_BGR24, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_BGR24 },
+ { PIX_FMT_RGB24, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB24 },
+ { PIX_FMT_BGRA, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_BGR32 },
+ { PIX_FMT_GRAY8, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_GREY },
+ { PIX_FMT_NV12, CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_NV12 },
+ { PIX_FMT_NONE, CODEC_ID_MJPEG, V4L2_PIX_FMT_MJPEG },
+ { PIX_FMT_NONE, CODEC_ID_MJPEG, V4L2_PIX_FMT_JPEG },
};
static int device_open(AVFormatContext *ctx, uint32_t *capabilities)
req.count = desired_video_buffers;
req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
req.memory = V4L2_MEMORY_MMAP;
- res = ioctl (s->fd, VIDIOC_REQBUFS, &req);
+ res = ioctl(s->fd, VIDIOC_REQBUFS, &req);
if (res < 0) {
if (errno == EINVAL) {
av_log(ctx, AV_LOG_ERROR, "Device does not support mmap\n");
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = i;
- res = ioctl (s->fd, VIDIOC_QUERYBUF, &buf);
+ res = ioctl(s->fd, VIDIOC_QUERYBUF, &buf);
if (res < 0) {
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_QUERYBUF)\n");
fd = buf_descriptor->fd;
av_free(buf_descriptor);
- res = ioctl (fd, VIDIOC_QBUF, &buf);
+ res = ioctl(fd, VIDIOC_QBUF, &buf);
if (res < 0) {
- av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF)\n");
+ av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF): %s\n", strerror(errno));
}
pkt->data = NULL;
pkt->size = 0;
* allocate a buffer for memcopying into it
*/
av_log(ctx, AV_LOG_ERROR, "Failed to allocate a buffer descriptor\n");
- res = ioctl (s->fd, VIDIOC_QBUF, &buf);
+ res = ioctl(s->fd, VIDIOC_QBUF, &buf);
return AVERROR(ENOMEM);
}
buf.memory = V4L2_MEMORY_MMAP;
buf.index = i;
- res = ioctl (s->fd, VIDIOC_QBUF, &buf);
+ res = ioctl(s->fd, VIDIOC_QBUF, &buf);
if (res < 0) {
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF): %s\n", strerror(errno));
}
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- res = ioctl (s->fd, VIDIOC_STREAMON, &type);
+ res = ioctl(s->fd, VIDIOC_STREAMON, &type);
if (res < 0) {
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_STREAMON): %s\n", strerror(errno));
av_free(s->buf_len);
}
-static int v4l2_set_parameters( AVFormatContext *s1, AVFormatParameters *ap )
+static int v4l2_set_parameters(AVFormatContext *s1, AVFormatParameters *ap)
{
struct video_data *s = s1->priv_data;
struct v4l2_input input;
struct v4l2_standard standard;
+ struct v4l2_streamparm streamparm = { 0 };
+ struct v4l2_fract *tpf = &streamparm.parm.capture.timeperframe;
int i;
- if(ap->channel>=0) {
+ streamparm.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ if (ap->channel>=0) {
/* set tv video input */
memset (&input, 0, sizeof (input));
input.index = ap->channel;
- if(ioctl (s->fd, VIDIOC_ENUMINPUT, &input) < 0) {
+ if (ioctl(s->fd, VIDIOC_ENUMINPUT, &input) < 0) {
av_log(s1, AV_LOG_ERROR, "The V4L2 driver ioctl enum input failed:\n");
return AVERROR(EIO);
}
av_log(s1, AV_LOG_DEBUG, "The V4L2 driver set input_id: %d, input: %s\n",
ap->channel, input.name);
- if(ioctl (s->fd, VIDIOC_S_INPUT, &input.index) < 0 ) {
+ if (ioctl(s->fd, VIDIOC_S_INPUT, &input.index) < 0) {
av_log(s1, AV_LOG_ERROR, "The V4L2 driver ioctl set input(%d) failed\n",
ap->channel);
return AVERROR(EIO);
}
}
- if(ap->standard) {
+ if (ap->standard) {
av_log(s1, AV_LOG_DEBUG, "The V4L2 driver set standard: %s\n",
- ap->standard );
+ ap->standard);
/* set tv standard */
memset (&standard, 0, sizeof (standard));
for(i=0;;i++) {
return AVERROR(EIO);
}
- if(!strcasecmp(standard.name, ap->standard)) {
+ if (!strcasecmp(standard.name, ap->standard)) {
break;
}
}
}
}
+ if (ap->time_base.num && ap->time_base.den) {
+ av_log(s1, AV_LOG_DEBUG, "Setting time per frame to %d/%d\n",
+ ap->time_base.num, ap->time_base.den);
+ tpf->numerator = ap->time_base.num;
+ tpf->denominator = ap->time_base.den;
+ if (ioctl(s->fd, VIDIOC_S_PARM, &streamparm) != 0) {
+ av_log(s1, AV_LOG_ERROR,
+ "ioctl set time per frame(%d/%d) failed\n",
+ ap->time_base.num, ap->time_base.den);
+ return AVERROR(EIO);
+ }
+
+ if (ap->time_base.den != tpf->denominator ||
+ ap->time_base.num != tpf->numerator) {
+ av_log(s1, AV_LOG_INFO,
+ "The driver changed the time per frame from %d/%d to %d/%d\n",
+ ap->time_base.num, ap->time_base.den,
+ tpf->numerator, tpf->denominator);
+ }
+ } else {
+ /* if timebase value is not set in ap, read the timebase value from the driver */
+ if (ioctl(s->fd, VIDIOC_G_PARM, &streamparm) != 0) {
+ av_log(s1, AV_LOG_ERROR, "ioctl(VIDIOC_G_PARM): %s\n", strerror(errno));
+ return AVERROR(errno);
+ }
+ }
+ ap->time_base.num = tpf->numerator;
+ ap->time_base.den = tpf->denominator;
+
return 0;
}
return AVERROR(EIO);
}
- if (avcodec_check_dimensions(s1, s->width, s->height) < 0)
+ if (av_image_check_size(s->width, s->height, 0, s1) < 0)
return AVERROR(EINVAL);
s->frame_format = desired_format;
- if( v4l2_set_parameters( s1, ap ) < 0 )
+ if (v4l2_set_parameters(s1, ap) < 0)
return AVERROR(EIO);
st->codec->pix_fmt = fmt_v4l2ff(desired_format, codec_id);
return 0;
}
-AVInputFormat v4l2_demuxer = {
+AVInputFormat ff_v4l2_demuxer = {
"video4linux2",
NULL_IF_CONFIG_SMALL("Video4Linux2 device grab"),
sizeof(struct video_data),
projects / ffmpeg / blobdiff