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ffmpeg.wasm-core
Commit c7238c72 authored by Luca Abeni's avatar Luca Abeni
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Pass a proper context to av_log() 

Originally committed as revision 7946 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 7bc5f2a8
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Showing with 38 additions and 33 deletions
libavformat/v4l2.c
View file @ c7238c72
......@@ -109,7 +109,7 @@ static struct fmt_map fmt_conversion_table[] = {
},
};
static int device_open(const char *devname, uint32_t *capabilities)
static int device_open(AVFormatContext *ctx, const char *devname, uint32_t *capabilities)
{
struct v4l2_capability cap;
int fd;
......@@ -117,7 +117,7 @@ static int device_open(const char *devname, uint32_t *capabilities)
fd = open(devname, O_RDWR /*| O_NONBLOCK*/, 0);
if (fd < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot open video device %s : %s\n",
av_log(ctx, AV_LOG_ERROR, "Cannot open video device %s : %s\n",
devname, strerror(errno));
return -1;
......@@ -127,20 +127,20 @@ static int device_open(const char *devname, uint32_t *capabilities)
// ENOIOCTLCMD definition only availble on __KERNEL__
if (res < 0 && errno == 515)
{
av_log(NULL, AV_LOG_ERROR, "QUERYCAP not implemented, probably V4L device but not supporting V4L2\n");
av_log(ctx, AV_LOG_ERROR, "QUERYCAP not implemented, probably V4L device but not supporting V4L2\n");
close(fd);
return -1;
}
if (res < 0) {
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QUERYCAP): %s\n",
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_QUERYCAP): %s\n",
strerror(errno));
close(fd);
return -1;
}
if ((cap.capabilities & V4L2_CAP_VIDEO_CAPTURE) == 0) {
av_log(NULL, AV_LOG_ERROR, "Not a video capture device\n");
av_log(ctx, AV_LOG_ERROR, "Not a video capture device\n");
close(fd);
return -1;
......@@ -150,8 +150,10 @@ static int device_open(const char *devname, uint32_t *capabilities)
return fd;
}
static int device_init(int fd, int *width, int *height, int pix_fmt)
static int device_init(AVFormatContext *ctx, int *width, int *height, int pix_fmt)
{
struct video_data *s = ctx->priv_data;
int fd = s->fd;
struct v4l2_format fmt;
int res;
......@@ -163,7 +165,7 @@ static int device_init(int fd, int *width, int *height, int pix_fmt)
fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
res = ioctl(fd, VIDIOC_S_FMT, &fmt);
if ((*width != fmt.fmt.pix.width) || (*height != fmt.fmt.pix.height)) {
av_log(NULL, AV_LOG_INFO, "The V4L2 driver changed the video from %dx%d to %dx%d\n", *width, *height, fmt.fmt.pix.width, fmt.fmt.pix.height);
av_log(ctx, AV_LOG_INFO, "The V4L2 driver changed the video from %dx%d to %dx%d\n", *width, *height, fmt.fmt.pix.width, fmt.fmt.pix.height);
*width = fmt.fmt.pix.width;
*height = fmt.fmt.pix.height;
}
......@@ -213,8 +215,9 @@ static enum PixelFormat fmt_v4l2ff(uint32_t pix_fmt)
return -1;
}
static int mmap_init(struct video_data *s)
static int mmap_init(AVFormatContext *ctx)
{
struct video_data *s = ctx->priv_data;
struct v4l2_requestbuffers req;
int i, res;
......@@ -225,29 +228,29 @@ static int mmap_init(struct video_data *s)
res = ioctl (s->fd, VIDIOC_REQBUFS, &req);
if (res < 0) {
if (errno == EINVAL) {
av_log(NULL, AV_LOG_ERROR, "Device does not support mmap\n");
av_log(ctx, AV_LOG_ERROR, "Device does not support mmap\n");
} else {
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_REQBUFS)\n");
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_REQBUFS)\n");
}
return -1;
}
if (req.count < 2) {
av_log(NULL, AV_LOG_ERROR, "Insufficient buffer memory\n");
av_log(ctx, AV_LOG_ERROR, "Insufficient buffer memory\n");
return -1;
}
s->buffers = req.count;
s->buf_start = av_malloc(sizeof(void *) * s->buffers);
if (s->buf_start == NULL) {
av_log(NULL, AV_LOG_ERROR, "Cannot allocate buffer pointers\n");
av_log(ctx, AV_LOG_ERROR, "Cannot allocate buffer pointers\n");
return -1;
}
s->buf_len = av_malloc(sizeof(unsigned int) * s->buffers);
if (s->buf_len == NULL) {
av_log(NULL, AV_LOG_ERROR, "Cannot allocate buffer sizes\n");
av_log(ctx, AV_LOG_ERROR, "Cannot allocate buffer sizes\n");
av_free(s->buf_start);
return -1;
......@@ -262,21 +265,21 @@ static int mmap_init(struct video_data *s)
buf.index = i;
res = ioctl (s->fd, VIDIOC_QUERYBUF, &buf);
if (res < 0) {
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QUERYBUF)\n");
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_QUERYBUF)\n");
return -1;
}
s->buf_len[i] = buf.length;
if (s->buf_len[i] < s->frame_size) {
av_log(NULL, AV_LOG_ERROR, "Buffer len [%d] = %d != %d\n", i, s->buf_len[i], s->frame_size);
av_log(ctx, AV_LOG_ERROR, "Buffer len [%d] = %d != %d\n", i, s->buf_len[i], s->frame_size);
return -1;
}
s->buf_start[i] = mmap (NULL, buf.length,
PROT_READ | PROT_WRITE, MAP_SHARED, s->fd, buf.m.offset);
if (s->buf_start[i] == MAP_FAILED) {
av_log(NULL, AV_LOG_ERROR, "mmap: %s\n", strerror(errno));
av_log(ctx, AV_LOG_ERROR, "mmap: %s\n", strerror(errno));
return -1;
}
......@@ -285,13 +288,14 @@ static int mmap_init(struct video_data *s)
return 0;
}
static int read_init(struct video_data *s)
static int read_init(AVFormatContext *ctx)
{
return -1;
}
static int mmap_read_frame(struct video_data *s, void *frame, int64_t *ts)
static int mmap_read_frame(AVFormatContext *ctx, void *frame, int64_t *ts)
{
struct video_data *s = ctx->priv_data;
struct v4l2_buffer buf;
int res;
......@@ -303,13 +307,13 @@ static int mmap_read_frame(struct video_data *s, void *frame, int64_t *ts)
while ((res = ioctl(s->fd, VIDIOC_DQBUF, &buf)) < 0 &&
((errno == EAGAIN) || (errno == EINTR)));
if (res < 0) {
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_DQBUF): %s\n", strerror(errno));
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_DQBUF): %s\n", strerror(errno));
return -1;
}
assert (buf.index < s->buffers);
if (buf.bytesused != s->frame_size) {
av_log(NULL, AV_LOG_ERROR, "The v4l2 frame is %d bytes, but %d bytes are expected\n", buf.bytesused, s->frame_size);
av_log(ctx, AV_LOG_ERROR, "The v4l2 frame is %d bytes, but %d bytes are expected\n", buf.bytesused, s->frame_size);
return -1;
}
......@@ -320,7 +324,7 @@ static int mmap_read_frame(struct video_data *s, void *frame, int64_t *ts)
res = ioctl (s->fd, VIDIOC_QBUF, &buf);
if (res < 0) {
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF)\n");
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF)\n");
return -1;
}
......@@ -328,13 +332,14 @@ static int mmap_read_frame(struct video_data *s, void *frame, int64_t *ts)
return s->buf_len[buf.index];
}
static int read_frame(struct video_data *s, void *frame, int64_t *ts)
static int read_frame(AVFormatContext *ctx, void *frame, int64_t *ts)
{
return -1;
}
static int mmap_start(struct video_data *s)
static int mmap_start(AVFormatContext *ctx)
{
struct video_data *s = ctx->priv_data;
enum v4l2_buf_type type;
int i, res;
......@@ -348,7 +353,7 @@ static int mmap_start(struct video_data *s)
res = ioctl (s->fd, VIDIOC_QBUF, &buf);
if (res < 0) {
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF): %s\n", strerror(errno));
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_QBUF): %s\n", strerror(errno));
return -1;
}
......@@ -357,7 +362,7 @@ static int mmap_start(struct video_data *s)
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
res = ioctl (s->fd, VIDIOC_STREAMON, &type);
if (res < 0) {
av_log(NULL, AV_LOG_ERROR, "ioctl(VIDIOC_STREAMON): %s\n", strerror(errno));
av_log(ctx, AV_LOG_ERROR, "ioctl(VIDIOC_STREAMON): %s\n", strerror(errno));
return -1;
}
......@@ -424,7 +429,7 @@ static int v4l2_read_header(AVFormatContext *s1, AVFormatParameters *ap)
video_device = "/dev/video";
}
capabilities = 0;
s->fd = device_open(video_device, &capabilities);
s->fd = device_open(s1, video_device, &capabilities);
if (s->fd < 0) {
av_free(st);
......@@ -433,13 +438,13 @@ static int v4l2_read_header(AVFormatContext *s1, AVFormatParameters *ap)
av_log(s1, AV_LOG_INFO, "[%d]Capabilities: %x\n", s->fd, capabilities);
desired_format = fmt_ff2v4l(ap->pix_fmt);
if (desired_format == 0 || (device_init(s->fd, &width, &height, desired_format) < 0)) {
if (desired_format == 0 || (device_init(s1, &width, &height, desired_format) < 0)) {
int i, done;
done = 0; i = 0;
while (!done) {
desired_format = fmt_conversion_table[i].v4l2_fmt;
if (device_init(s->fd, &width, &height, desired_format) < 0) {
if (device_init(s1, &width, &height, desired_format) < 0) {
desired_format = 0;
i++;
} else {
......@@ -463,13 +468,13 @@ static int v4l2_read_header(AVFormatContext *s1, AVFormatParameters *ap)
s->frame_size = avpicture_get_size(st->codec->pix_fmt, width, height);
if (capabilities & V4L2_CAP_STREAMING) {
s->io_method = io_mmap;
res = mmap_init(s);
res = mmap_init(s1);
if (res == 0) {
res = mmap_start(s);
res = mmap_start(s1);
}
} else {
s->io_method = io_read;
res = read_init(s);
res = read_init(s1);
}
if (res < 0) {
close(s->fd);
......@@ -499,9 +504,9 @@ static int v4l2_read_packet(AVFormatContext *s1, AVPacket *pkt)
return AVERROR_IO;
if (s->io_method == io_mmap) {
res = mmap_read_frame(s, pkt->data, &pkt->pts);
res = mmap_read_frame(s1, pkt->data, &pkt->pts);
} else if (s->io_method == io_read) {
res = read_frame(s, pkt->data, &pkt->pts);
res = read_frame(s1, pkt->data, &pkt->pts);
} else {
return AVERROR_IO;
}
......
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