{
struct video_data *s = ctx->priv_data;
int fd = s->fd;
- struct v4l2_format fmt;
+ struct v4l2_format fmt = { .type = V4L2_BUF_TYPE_VIDEO_CAPTURE };
struct v4l2_pix_format *pix = &fmt.fmt.pix;
int res;
- memset(&fmt, 0, sizeof(struct v4l2_format));
-
- fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
pix->width = *width;
pix->height = *height;
pix->pixelformat = pix_fmt;
static int mmap_init(AVFormatContext *ctx)
{
- struct video_data *s = ctx->priv_data;
- struct v4l2_requestbuffers req;
int i, res;
+ struct video_data *s = ctx->priv_data;
+ struct v4l2_requestbuffers req = {
+ .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ .count = desired_video_buffers,
+ .memory = V4L2_MEMORY_MMAP
+ };
- 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) {
}
for (i = 0; i < req.count; i++) {
- struct v4l2_buffer buf;
+ struct v4l2_buffer buf = {
+ .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ .index = i,
+ .memory = V4L2_MEMORY_MMAP
+ };
- 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(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_QUERYBUF)\n");
static void mmap_release_buffer(AVPacket *pkt)
{
- struct v4l2_buffer buf;
+ struct v4l2_buffer buf = { 0 };
int res, fd;
struct buff_data *buf_descriptor = pkt->priv;
if (pkt->data == NULL)
return;
- memset(&buf, 0, sizeof(struct v4l2_buffer));
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = buf_descriptor->index;
static int mmap_read_frame(AVFormatContext *ctx, AVPacket *pkt)
{
struct video_data *s = ctx->priv_data;
- struct v4l2_buffer buf;
+ struct v4l2_buffer buf = {
+ .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ .memory = V4L2_MEMORY_MMAP
+ };
struct buff_data *buf_descriptor;
struct pollfd p = { .fd = s->fd, .events = POLLIN };
int res;
- memset(&buf, 0, sizeof(struct v4l2_buffer));
- buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- buf.memory = V4L2_MEMORY_MMAP;
-
res = poll(&p, 1, s->timeout);
if (res < 0)
return AVERROR(errno);
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;
+ struct v4l2_buffer buf = {
+ .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ .index = i,
+ .memory = V4L2_MEMORY_MMAP
+ };
res = ioctl(s->fd, VIDIOC_QBUF, &buf);
if (res < 0) {
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_input input = { 0 };
+ struct v4l2_standard standard = { 0 };
struct v4l2_streamparm streamparm = { 0 };
struct v4l2_fract *tpf = &streamparm.parm.capture.timeperframe;
+ AVRational framerate_q = { 0 };
int i, ret;
- AVRational framerate_q;
streamparm.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
}
/* set tv video input */
- memset (&input, 0, sizeof (input));
input.index = s->channel;
if (ioctl(s->fd, VIDIOC_ENUMINPUT, &input) < 0) {
av_log(s1, AV_LOG_ERROR, "The V4L2 driver ioctl enum input failed:\n");
av_log(s1, AV_LOG_DEBUG, "The V4L2 driver set standard: %s\n",
s->standard);
/* set tv standard */
- memset (&standard, 0, sizeof (standard));
for(i=0;;i++) {
standard.index = i;
if (ioctl(s->fd, VIDIOC_ENUMSTD, &standard) < 0) {