* (http://v4l2spec.bytesex.org/v4l2spec/capture.c)
*
* Thanks to Michael Niedermayer for providing the mapping between
- * V4L2_PIX_FMT_* and PIX_FMT_*
+ * V4L2_PIX_FMT_* and AV_PIX_FMT_*
*
*
* This file is part of Libav.
#else
#include <linux/videodev2.h>
#endif
-#include <time.h>
#include "libavutil/imgutils.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
};
struct fmt_map {
- enum PixelFormat ff_fmt;
- enum CodecID codec_id;
+ enum AVPixelFormat ff_fmt;
+ enum AVCodecID codec_id;
uint32_t v4l2_fmt;
};
static struct fmt_map fmt_conversion_table[] = {
//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 },
+ { AV_PIX_FMT_YUV420P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV420 },
+ { AV_PIX_FMT_YUV422P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV422P },
+ { AV_PIX_FMT_YUYV422, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUYV },
+ { AV_PIX_FMT_UYVY422, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_UYVY },
+ { AV_PIX_FMT_YUV411P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV411P },
+ { AV_PIX_FMT_YUV410P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV410 },
+ { AV_PIX_FMT_RGB555, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB555 },
+ { AV_PIX_FMT_RGB565, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB565 },
+ { AV_PIX_FMT_BGR24, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_BGR24 },
+ { AV_PIX_FMT_RGB24, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB24 },
+ { AV_PIX_FMT_BGRA, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_BGR32 },
+ { AV_PIX_FMT_GRAY8, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_GREY },
+ { AV_PIX_FMT_NV12, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_NV12 },
+ { AV_PIX_FMT_NONE, AV_CODEC_ID_MJPEG, V4L2_PIX_FMT_MJPEG },
+ { AV_PIX_FMT_NONE, AV_CODEC_ID_MJPEG, V4L2_PIX_FMT_JPEG },
};
static int device_open(AVFormatContext *ctx)
{
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;
return 1;
}
-static uint32_t fmt_ff2v4l(enum PixelFormat pix_fmt, enum CodecID codec_id)
+static uint32_t fmt_ff2v4l(enum AVPixelFormat pix_fmt, enum AVCodecID codec_id)
{
int i;
for (i = 0; i < FF_ARRAY_ELEMS(fmt_conversion_table); i++) {
- if ((codec_id == CODEC_ID_NONE ||
+ if ((codec_id == AV_CODEC_ID_NONE ||
fmt_conversion_table[i].codec_id == codec_id) &&
- (pix_fmt == PIX_FMT_NONE ||
+ (pix_fmt == AV_PIX_FMT_NONE ||
fmt_conversion_table[i].ff_fmt == pix_fmt)) {
return fmt_conversion_table[i].v4l2_fmt;
}
return 0;
}
-static enum PixelFormat fmt_v4l2ff(uint32_t v4l2_fmt, enum CodecID codec_id)
+static enum AVPixelFormat fmt_v4l2ff(uint32_t v4l2_fmt, enum AVCodecID codec_id)
{
int i;
}
}
- return PIX_FMT_NONE;
+ return AV_PIX_FMT_NONE;
}
-static enum CodecID fmt_v4l2codec(uint32_t v4l2_fmt)
+static enum AVCodecID fmt_v4l2codec(uint32_t v4l2_fmt)
{
int i;
}
}
- return CODEC_ID_NONE;
+ return AV_CODEC_ID_NONE;
}
#if HAVE_STRUCT_V4L2_FRMIVALENUM_DISCRETE
struct v4l2_fmtdesc vfd = { .type = V4L2_BUF_TYPE_VIDEO_CAPTURE };
while(!ioctl(fd, VIDIOC_ENUM_FMT, &vfd)) {
- enum CodecID codec_id = fmt_v4l2codec(vfd.pixelformat);
- enum PixelFormat pix_fmt = fmt_v4l2ff(vfd.pixelformat, codec_id);
+ enum AVCodecID codec_id = fmt_v4l2codec(vfd.pixelformat);
+ enum AVPixelFormat pix_fmt = fmt_v4l2ff(vfd.pixelformat, codec_id);
vfd.index++;
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) {
av_free(s->buf_len);
}
-static int v4l2_set_parameters(AVFormatContext *s1, AVFormatParameters *ap)
+static int v4l2_set_parameters(AVFormatContext *s1)
{
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) {
}
static uint32_t device_try_init(AVFormatContext *s1,
- enum PixelFormat pix_fmt,
+ enum AVPixelFormat pix_fmt,
int *width,
int *height,
- enum CodecID *codec_id)
+ enum AVCodecID *codec_id)
{
uint32_t desired_format = fmt_ff2v4l(pix_fmt, s1->video_codec_id);
desired_format = 0;
for (i = 0; i<FF_ARRAY_ELEMS(fmt_conversion_table); i++) {
- if (s1->video_codec_id == CODEC_ID_NONE ||
+ if (s1->video_codec_id == AV_CODEC_ID_NONE ||
fmt_conversion_table[i].codec_id == s1->video_codec_id) {
desired_format = fmt_conversion_table[i].v4l2_fmt;
if (device_init(s1, width, height, desired_format) >= 0) {
if (desired_format != 0) {
*codec_id = fmt_v4l2codec(desired_format);
- assert(*codec_id != CODEC_ID_NONE);
+ assert(*codec_id != AV_CODEC_ID_NONE);
}
return desired_format;
}
-static int v4l2_read_header(AVFormatContext *s1, AVFormatParameters *ap)
+static int v4l2_read_header(AVFormatContext *s1)
{
struct video_data *s = s1->priv_data;
AVStream *st;
int res = 0;
uint32_t desired_format;
- enum CodecID codec_id;
- enum PixelFormat pix_fmt = PIX_FMT_NONE;
+ enum AVCodecID codec_id;
+ enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
st = avformat_new_stream(s1, NULL);
if (!st) {
pix_fmt = av_get_pix_fmt(s->pixel_format);
- if (pix_fmt == PIX_FMT_NONE && !codec) {
+ if (pix_fmt == AV_PIX_FMT_NONE && !codec) {
av_log(s1, AV_LOG_ERROR, "No such input format: %s.\n",
s->pixel_format);
s->frame_format = desired_format;
- if ((res = v4l2_set_parameters(s1, ap) < 0))
+ if ((res = v4l2_set_parameters(s1) < 0))
goto out;
st->codec->pix_fmt = fmt_v4l2ff(desired_format, codec_id);
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = codec_id;
- if (codec_id == CODEC_ID_RAWVIDEO)
+ if (codec_id == AV_CODEC_ID_RAWVIDEO)
st->codec->codec_tag =
avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
st->codec->width = s->width;
#define DEC AV_OPT_FLAG_DECODING_PARAM
static const AVOption options[] = {
{ "standard", "TV standard, used only by analog frame grabber", OFFSET(standard), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC },
- { "channel", "TV channel, used only by frame grabber", OFFSET(channel), AV_OPT_TYPE_INT, {.dbl = 0 }, 0, INT_MAX, DEC },
+ { "channel", "TV channel, used only by frame grabber", OFFSET(channel), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
{ "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
{ "pixel_format", "Preferred pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
{ "input_format", "Preferred pixel format (for raw video) or codec name", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
{ "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
- { "list_formats", "List available formats and exit", OFFSET(list_format), AV_OPT_TYPE_INT, {.dbl = 0 }, 0, INT_MAX, DEC, "list_formats" },
- { "all", "Show all available formats", OFFSET(list_format), AV_OPT_TYPE_CONST, {.dbl = V4L_ALLFORMATS }, 0, INT_MAX, DEC, "list_formats" },
- { "raw", "Show only non-compressed formats", OFFSET(list_format), AV_OPT_TYPE_CONST, {.dbl = V4L_RAWFORMATS }, 0, INT_MAX, DEC, "list_formats" },
- { "compressed", "Show only compressed formats", OFFSET(list_format), AV_OPT_TYPE_CONST, {.dbl = V4L_COMPFORMATS }, 0, INT_MAX, DEC, "list_formats" },
+ { "list_formats", "List available formats and exit", OFFSET(list_format), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC, "list_formats" },
+ { "all", "Show all available formats", OFFSET(list_format), AV_OPT_TYPE_CONST, {.i64 = V4L_ALLFORMATS }, 0, INT_MAX, DEC, "list_formats" },
+ { "raw", "Show only non-compressed formats", OFFSET(list_format), AV_OPT_TYPE_CONST, {.i64 = V4L_RAWFORMATS }, 0, INT_MAX, DEC, "list_formats" },
+ { "compressed", "Show only compressed formats", OFFSET(list_format), AV_OPT_TYPE_CONST, {.i64 = V4L_COMPFORMATS }, 0, INT_MAX, DEC, "list_formats" },
{ NULL },
};
projects / ffmpeg / blobdiff