#include <time.h>
#include <linux/fb.h>
+#include "libavutil/log.h"
#include "libavutil/mem.h"
+#include "libavutil/opt.h"
+#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
-#include "libavformat/avformat.h"
+#include "avdevice.h"
struct rgb_pixfmt_map_entry {
int bits_per_pixel;
}
typedef struct {
+ AVClass *class; ///< class for private options
int frame_size; ///< size in bytes of a grabbed frame
- AVRational time_base; ///< time base
+ AVRational framerate_q; ///< framerate
+ char *framerate; ///< framerate string set by a private option
int64_t time_frame; ///< time for the next frame to output (in 1/1000000 units)
int fd; ///< framebuffer device file descriptor
enum PixelFormat pix_fmt;
int ret, flags = O_RDONLY;
+ ret = av_parse_video_rate(&fbdev->framerate_q, fbdev->framerate);
+ if (ret < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", fbdev->framerate);
+ return ret;
+ }
+#if FF_API_FORMAT_PARAMETERS
+ if (ap->time_base.num)
+ fbdev->framerate_q = (AVRational){ap->time_base.den, ap->time_base.num};
+#endif
+
if (!(st = av_new_stream(avctx, 0)))
return AVERROR(ENOMEM);
av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in microseconds */
- if (ap->time_base.den <= 0) {
- av_log(avctx, AV_LOG_ERROR, "Invalid time base %d/%d\n",
- ap->time_base.num, ap->time_base.den);
- return AVERROR(EINVAL);
- }
-
/* NONBLOCK is ignored by the fbdev driver, only set for consistency */
if (avctx->flags & AVFMT_FLAG_NONBLOCK)
flags |= O_NONBLOCK;
fbdev->bytes_per_pixel = (fbdev->varinfo.bits_per_pixel + 7) >> 3;
fbdev->frame_linesize = fbdev->width * fbdev->bytes_per_pixel;
fbdev->frame_size = fbdev->frame_linesize * fbdev->heigth;
- fbdev->time_base = ap->time_base;
fbdev->time_frame = AV_NOPTS_VALUE;
fbdev->data = mmap(NULL, fbdev->fixinfo.smem_len, PROT_READ, MAP_SHARED, fbdev->fd, 0);
if (fbdev->data == MAP_FAILED) {
st->codec->width = fbdev->width;
st->codec->height = fbdev->heigth;
st->codec->pix_fmt = pix_fmt;
- st->codec->time_base = ap->time_base;
+ st->codec->time_base = (AVRational){fbdev->framerate_q.den, fbdev->framerate_q.num};
st->codec->bit_rate =
- fbdev->width * fbdev->heigth * fbdev->bytes_per_pixel / av_q2d(ap->time_base) * 8;
+ fbdev->width * fbdev->heigth * fbdev->bytes_per_pixel * av_q2d(fbdev->framerate_q) * 8;
av_log(avctx, AV_LOG_INFO,
- "w:%d h:%d bpp:%d pixfmt:%s tb:%d/%d bit_rate:%d\n",
+ "w:%d h:%d bpp:%d pixfmt:%s fps:%d/%d bit_rate:%d\n",
fbdev->width, fbdev->heigth, fbdev->varinfo.bits_per_pixel,
av_pix_fmt_descriptors[pix_fmt].name,
- ap->time_base.num, ap->time_base.den,
+ fbdev->framerate_q.num, fbdev->framerate_q.den,
st->codec->bit_rate);
return 0;
"time_frame:%"PRId64" curtime:%"PRId64" delay:%"PRId64"\n",
fbdev->time_frame, curtime, delay);
if (delay <= 0) {
- fbdev->time_frame += INT64_C(1000000) * av_q2d(fbdev->time_base);
+ fbdev->time_frame += INT64_C(1000000) / av_q2d(fbdev->framerate_q);
break;
}
if (avctx->flags & AVFMT_FLAG_NONBLOCK)
return 0;
}
+#define OFFSET(x) offsetof(FBDevContext, x)
+#define DEC AV_OPT_FLAG_DECODING_PARAM
+static const AVOption options[] = {
+ { "framerate","", OFFSET(framerate), FF_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
+ { NULL },
+};
+
+static const AVClass fbdev_class = {
+ .class_name = "fbdev indev",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
AVInputFormat ff_fbdev_demuxer = {
.name = "fbdev",
.long_name = NULL_IF_CONFIG_SMALL("Linux framebuffer"),
.read_packet = fbdev_read_packet,
.read_close = fbdev_read_close,
.flags = AVFMT_NOFILE,
+ .priv_class = &fbdev_class,
};