static int dv1394_read_header(AVFormatContext * context, AVFormatParameters * ap)
{
struct dv1394_data *dv = context->priv_data;
const char *video_device;
dv->dv_demux = dv_init_demux(context);
if (!dv->dv_demux)
goto failed;
if (ap->standard && !strcasecmp(ap->standard, "pal"))
dv->format = DV1394_PAL;
else
dv->format = DV1394_NTSC;
if (ap->channel)
dv->channel = ap->channel;
else
dv->channel = DV1394_DEFAULT_CHANNEL;
/* Open and initialize DV1394 device */
video_device = ap->device;
if (!video_device)
video_device = "/dev/dv1394/0";
dv->fd = open(video_device, O_RDONLY);
if (dv->fd < 0) {
perror("Failed to open DV interface");
goto failed;
}
if (dv1394_reset(dv) < 0) {
perror("Failed to initialize DV interface");
goto failed;
}
dv->ring = mmap(NULL, DV1394_PAL_FRAME_SIZE * DV1394_RING_FRAMES,
PROT_READ, MAP_PRIVATE, dv->fd, 0);
if (dv->ring == MAP_FAILED) {
perror("Failed to mmap DV ring buffer");
goto failed;
}
if (dv1394_start(dv) < 0)
goto failed;
return 0;
failed:
close(dv->fd);
return AVERROR_IO;
}
static int dv1394_read_header(AVFormatContext * context, AVFormatParameters * ap)
{
struct dv1394_data *dv = context->priv_data;
dv->dv_demux = dv_init_demux(context);
if (!dv->dv_demux)
goto failed;
if (ap->standard && !strcasecmp(ap->standard, "pal"))
dv->format = DV1394_PAL;
else
dv->format = DV1394_NTSC;
if (ap->channel)
dv->channel = ap->channel;
else
dv->channel = DV1394_DEFAULT_CHANNEL;
/* Open and initialize DV1394 device */
dv->fd = open(context->filename, O_RDONLY);
if (dv->fd < 0) {
av_log(context, AV_LOG_ERROR, "Failed to open DV interface: %s\n", strerror(errno));
goto failed;
}
if (dv1394_reset(dv) < 0) {
av_log(context, AV_LOG_ERROR, "Failed to initialize DV interface: %s\n", strerror(errno));
goto failed;
}
dv->ring = mmap(NULL, DV1394_PAL_FRAME_SIZE * DV1394_RING_FRAMES,
PROT_READ, MAP_PRIVATE, dv->fd, 0);
if (dv->ring == MAP_FAILED) {
av_log(context, AV_LOG_ERROR, "Failed to mmap DV ring buffer: %s\n", strerror(errno));
goto failed;
}
if (dv1394_start(dv) < 0)
goto failed;
return 0;
failed:
close(dv->fd);
return AVERROR(EIO);
}
