gboolean resuscitated = FALSE;
gint index;
GstMetaV4l2 *meta;
+ GstV4l2Object *obj;
meta = GST_META_V4L2_GET (buffer);
g_assert (meta != NULL);
pool = meta->pool;
index = meta->vbuffer.index;
+ obj = pool->obj;
- GST_LOG_OBJECT (pool->v4l2elem, "finalizing buffer %p %d", buffer, index);
+ GST_LOG_OBJECT (obj->element, "finalizing buffer %p %d", buffer, index);
GST_V4L2_BUFFER_POOL_LOCK (pool);
if (pool->running) {
if (pool->requeuebuf) {
if (!gst_v4l2_buffer_pool_qbuf (pool, buffer)) {
- GST_WARNING ("could not requeue buffer %p %d", buffer, index);
+ GST_WARNING_OBJECT (obj->element, "could not requeue buffer %p %d",
+ buffer, index);
} else {
resuscitated = TRUE;
}
g_async_queue_push (pool->avail_buffers, buffer);
}
} else {
- GST_LOG_OBJECT (pool->v4l2elem, "the pool is shutting down");
+ GST_LOG_OBJECT (obj->element, "the pool is shutting down");
}
if (resuscitated) {
- GST_LOG_OBJECT (pool->v4l2elem, "reviving buffer %p, %d", buffer, index);
+ GST_LOG_OBJECT (obj->element, "reviving buffer %p, %d", buffer, index);
gst_buffer_ref (buffer);
pool->buffers[index] = buffer;
}
GST_V4L2_BUFFER_POOL_UNLOCK (pool);
if (!resuscitated) {
- GST_LOG_OBJECT (pool->v4l2elem,
+ GST_LOG_OBJECT (obj->element,
"buffer %p (data %p, len %u) not recovered, unmapping",
buffer, meta->mem, meta->vbuffer.length);
v4l2_munmap (meta->mem, meta->vbuffer.length);
{
GstBuffer *ret;
GstMetaV4l2 *meta;
+ GstV4l2Object *obj;
+
+ obj = pool->obj;
ret = gst_buffer_new ();
GST_MINI_OBJECT_CAST (ret)->dispose =
meta = GST_META_V4L2_ADD (ret);
- GST_LOG_OBJECT (pool->v4l2elem, "creating buffer %u, %p in pool %p", index,
+ GST_LOG_OBJECT (obj->element, "creating buffer %u, %p in pool %p", index,
ret, pool);
meta->pool = (GstV4l2BufferPool *) g_object_ref (pool);
if (v4l2_ioctl (pool->video_fd, VIDIOC_QUERYBUF, &meta->vbuffer) < 0)
goto querybuf_failed;
- GST_LOG_OBJECT (pool->v4l2elem, " index: %u", meta->vbuffer.index);
- GST_LOG_OBJECT (pool->v4l2elem, " type: %d", meta->vbuffer.type);
- GST_LOG_OBJECT (pool->v4l2elem, " bytesused: %u", meta->vbuffer.bytesused);
- GST_LOG_OBJECT (pool->v4l2elem, " flags: %08x", meta->vbuffer.flags);
- GST_LOG_OBJECT (pool->v4l2elem, " field: %d", meta->vbuffer.field);
- GST_LOG_OBJECT (pool->v4l2elem, " memory: %d", meta->vbuffer.memory);
+ GST_LOG_OBJECT (obj->element, " index: %u", meta->vbuffer.index);
+ GST_LOG_OBJECT (obj->element, " type: %d", meta->vbuffer.type);
+ GST_LOG_OBJECT (obj->element, " bytesused: %u", meta->vbuffer.bytesused);
+ GST_LOG_OBJECT (obj->element, " flags: %08x", meta->vbuffer.flags);
+ GST_LOG_OBJECT (obj->element, " field: %d", meta->vbuffer.field);
+ GST_LOG_OBJECT (obj->element, " memory: %d", meta->vbuffer.memory);
if (meta->vbuffer.memory == V4L2_MEMORY_MMAP)
- GST_LOG_OBJECT (pool->v4l2elem, " MMAP offset: %u",
- meta->vbuffer.m.offset);
- GST_LOG_OBJECT (pool->v4l2elem, " length: %u", meta->vbuffer.length);
- GST_LOG_OBJECT (pool->v4l2elem, " input: %u", meta->vbuffer.input);
+ GST_LOG_OBJECT (obj->element, " MMAP offset: %u", meta->vbuffer.m.offset);
+ GST_LOG_OBJECT (obj->element, " length: %u", meta->vbuffer.length);
+ GST_LOG_OBJECT (obj->element, " input: %u", meta->vbuffer.input);
meta->mem = v4l2_mmap (0, meta->vbuffer.length,
PROT_READ | PROT_WRITE, MAP_SHARED, pool->video_fd,
gst_memory_new_wrapped (0,
meta->mem, NULL, meta->vbuffer.length, 0, meta->vbuffer.length));
+ /* add metadata to buffers */
+
+
+
+
return ret;
/* ERRORS */
object_class->finalize = gst_v4l2_buffer_pool_finalize;
}
-/* this is somewhat of a hack.. but better to keep the hack in
- * one place than copy/pasting it around..
- */
-static GstV4l2Object *
-get_v4l2_object (GstElement * v4l2elem)
-{
- GstV4l2Object *v4l2object = NULL;
- if (GST_IS_V4L2SRC (v4l2elem)) {
- v4l2object = (GST_V4L2SRC (v4l2elem))->v4l2object;
- } else if (GST_IS_V4L2SINK (v4l2elem)) {
- v4l2object = (GST_V4L2SINK (v4l2elem))->v4l2object;
- } else {
- GST_ERROR_OBJECT (v4l2elem, "unknown v4l2 element");
- }
- return v4l2object;
-}
-
/**
* gst_v4l2_buffer_pool_new:
- * @v4l2elem: the v4l2 element (src or sink) that owns this pool
- * @fd: the video device file descriptor
+ * @obj: the v4l2 object owning the pool
* @num_buffers: the requested number of buffers in the pool
* @requeuebuf: if %TRUE, and if the pool is still in the running state, a
* buffer with no remaining references is immediately passed back to v4l2
* Returns: the new pool, use gst_v4l2_buffer_pool_destroy() to free resources
*/
GstV4l2BufferPool *
-gst_v4l2_buffer_pool_new (GstElement * v4l2elem, gint fd, gint num_buffers,
- gboolean requeuebuf, enum v4l2_buf_type type)
+gst_v4l2_buffer_pool_new (GstV4l2Object * obj, gint num_buffers,
+ gboolean requeuebuf)
{
GstV4l2BufferPool *pool;
gint n;
pool = (GstV4l2BufferPool *) g_object_new (GST_TYPE_V4L2_BUFFER_POOL, NULL);
- pool->video_fd = v4l2_dup (fd);
+ pool->video_fd = v4l2_dup (obj->video_fd);
if (pool->video_fd < 0)
goto dup_failed;
/* first, lets request buffers, and see how many we can get: */
- GST_DEBUG_OBJECT (v4l2elem, "STREAMING, requesting %d MMAP buffers",
+ GST_DEBUG_OBJECT (obj->element, "STREAMING, requesting %d MMAP buffers",
num_buffers);
memset (&breq, 0, sizeof (struct v4l2_requestbuffers));
- breq.type = type;
+ breq.type = obj->type;
breq.count = num_buffers;
breq.memory = V4L2_MEMORY_MMAP;
- if (v4l2_ioctl (fd, VIDIOC_REQBUFS, &breq) < 0)
+ if (v4l2_ioctl (pool->video_fd, VIDIOC_REQBUFS, &breq) < 0)
goto reqbufs_failed;
- GST_LOG_OBJECT (v4l2elem, " count: %u", breq.count);
- GST_LOG_OBJECT (v4l2elem, " type: %d", breq.type);
- GST_LOG_OBJECT (v4l2elem, " memory: %d", breq.memory);
+ GST_LOG_OBJECT (obj->element, " count: %u", breq.count);
+ GST_LOG_OBJECT (obj->element, " type: %d", breq.type);
+ GST_LOG_OBJECT (obj->element, " memory: %d", breq.memory);
if (breq.count < GST_V4L2_MIN_BUFFERS)
goto no_buffers;
if (num_buffers != breq.count) {
- GST_WARNING_OBJECT (v4l2elem, "using %u buffers instead", breq.count);
+ GST_WARNING_OBJECT (obj->element, "using %u buffers instead", breq.count);
num_buffers = breq.count;
}
- pool->v4l2elem = v4l2elem;
+ pool->obj = obj;
pool->requeuebuf = requeuebuf;
- pool->type = type;
+ pool->type = obj->type;
pool->buffer_count = num_buffers;
pool->buffers = g_new0 (GstBuffer *, num_buffers);
pool->avail_buffers = g_async_queue_new ();
}
reqbufs_failed:
{
- GstV4l2Object *v4l2object = get_v4l2_object (v4l2elem);
- GST_ELEMENT_ERROR (v4l2elem, RESOURCE, READ,
+ GST_ELEMENT_ERROR (obj->element, RESOURCE, READ,
(_("Could not get buffers from device '%s'."),
- v4l2object->videodev),
+ obj->videodev),
("error requesting %d buffers: %s", num_buffers, g_strerror (errno)));
return NULL;
}
no_buffers:
{
- GstV4l2Object *v4l2object = get_v4l2_object (v4l2elem);
- GST_ELEMENT_ERROR (v4l2elem, RESOURCE, READ,
+ GST_ELEMENT_ERROR (obj->element, RESOURCE, READ,
(_("Could not get enough buffers from device '%s'."),
- v4l2object->videodev),
+ obj->videodev),
("we received %d from device '%s', we want at least %d",
- breq.count, v4l2object->videodev, GST_V4L2_MIN_BUFFERS));
+ breq.count, obj->videodev, GST_V4L2_MIN_BUFFERS));
return NULL;
}
buffer_new_failed:
gst_v4l2_buffer_pool_destroy (GstV4l2BufferPool * pool)
{
gint n;
+ GstV4l2Object *obj = pool->obj;
GST_V4L2_BUFFER_POOL_LOCK (pool);
pool->running = FALSE;
GST_V4L2_BUFFER_POOL_UNLOCK (pool);
- GST_DEBUG_OBJECT (pool->v4l2elem, "destroy pool");
+ GST_DEBUG_OBJECT (obj->element, "destroy pool");
/* after this point, no more buffers will be queued or dequeued; no buffer
* from pool->buffers that is NULL will be set to a buffer, and no buffer that
gst_v4l2_buffer_pool_qbuf (GstV4l2BufferPool * pool, GstBuffer * buf)
{
GstMetaV4l2 *meta;
+ GstV4l2Object *obj = pool->obj;
meta = GST_META_V4L2_GET (buf);
- GST_LOG_OBJECT (pool->v4l2elem, "enqueue pool buffer %d",
- meta->vbuffer.index);
+ GST_LOG_OBJECT (obj->element, "enqueue pool buffer %d", meta->vbuffer.index);
if (v4l2_ioctl (pool->video_fd, VIDIOC_QBUF, &meta->vbuffer) < 0)
goto queue_failed;
pool->num_live_buffers--;
- GST_DEBUG_OBJECT (pool->v4l2elem, "num_live_buffers--: %d",
+ GST_DEBUG_OBJECT (obj->element, "num_live_buffers--: %d",
pool->num_live_buffers);
return TRUE;
/* ERRORS */
queue_failed:
{
- GST_WARNING_OBJECT (pool->v4l2elem, "could not queue a buffer");
+ GST_WARNING_OBJECT (obj->element, "could not queue a buffer");
return FALSE;
}
}
GstBuffer *
gst_v4l2_buffer_pool_dqbuf (GstV4l2BufferPool * pool)
{
- GstV4l2Object *v4l2object = get_v4l2_object (pool->v4l2elem);
GstBuffer *pool_buffer;
struct v4l2_buffer buffer;
+ GstV4l2Object *obj = pool->obj;
memset (&buffer, 0x00, sizeof (buffer));
buffer.type = pool->type;
if (pool_buffer == NULL)
goto no_buffers;
- GST_LOG_OBJECT (pool->v4l2elem,
+ GST_LOG_OBJECT (obj->element,
"grabbed frame %d (ix=%d), flags %08x, pool-ct=%d, buffer=%p",
buffer.sequence, buffer.index, buffer.flags, pool->num_live_buffers,
pool_buffer);
pool->num_live_buffers++;
- GST_DEBUG_OBJECT (pool->v4l2elem, "num_live_buffers++: %d",
+ GST_DEBUG_OBJECT (obj->element, "num_live_buffers++: %d",
pool->num_live_buffers);
/* set top/bottom field first if v4l2_buffer has the information */
/* ERRORS */
error:
{
- GST_WARNING_OBJECT (pool->v4l2elem,
+ GST_WARNING_OBJECT (obj->element,
"problem grabbing frame %d (ix=%d), pool-ct=%d, buf.flags=%d",
buffer.sequence, buffer.index,
GST_MINI_OBJECT_REFCOUNT (pool), buffer.flags);
switch (errno) {
case EAGAIN:
- GST_WARNING_OBJECT (pool->v4l2elem,
+ GST_WARNING_OBJECT (obj->element,
"Non-blocking I/O has been selected using O_NONBLOCK and"
- " no buffer was in the outgoing queue. device %s",
- v4l2object->videodev);
+ " no buffer was in the outgoing queue. device %s", obj->videodev);
break;
case EINVAL:
- GST_ELEMENT_ERROR (pool->v4l2elem, RESOURCE, FAILED,
+ GST_ELEMENT_ERROR (obj->element, RESOURCE, FAILED,
(_("Failed trying to get video frames from device '%s'."),
- v4l2object->videodev),
- (_("The buffer type is not supported, or the index is out of bounds," " or no buffers have been allocated yet, or the userptr" " or length are invalid. device %s"), v4l2object->videodev));
+ obj->videodev),
+ (_("The buffer type is not supported, or the index is out of bounds," " or no buffers have been allocated yet, or the userptr" " or length are invalid. device %s"), obj->videodev));
break;
case ENOMEM:
- GST_ELEMENT_ERROR (pool->v4l2elem, RESOURCE, FAILED,
- (_("Failed trying to get video frames from device '%s'. Not enough memory."), v4l2object->videodev), (_("insufficient memory to enqueue a user pointer buffer. device %s."), v4l2object->videodev));
+ GST_ELEMENT_ERROR (obj->element, RESOURCE, FAILED,
+ (_("Failed trying to get video frames from device '%s'. Not enough memory."), obj->videodev), (_("insufficient memory to enqueue a user pointer buffer. device %s."), obj->videodev));
break;
case EIO:
- GST_INFO_OBJECT (pool->v4l2elem,
+ GST_INFO_OBJECT (obj->element,
"VIDIOC_DQBUF failed due to an internal error."
" Can also indicate temporary problems like signal loss."
" Note the driver might dequeue an (empty) buffer despite"
" returning an error, or even stop capturing."
- " device %s", v4l2object->videodev);
+ " device %s", obj->videodev);
/* have we de-queued a buffer ? */
if (!(buffer.flags & (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))) {
- GST_DEBUG_OBJECT (pool->v4l2elem, "reenqueing buffer");
+ GST_DEBUG_OBJECT (obj->element, "reenqueing buffer");
/* FIXME ... should we do something here? */
}
break;
case EINTR:
- GST_WARNING_OBJECT (pool->v4l2elem,
- "could not sync on a buffer on device %s", v4l2object->videodev);
+ GST_WARNING_OBJECT (obj->element,
+ "could not sync on a buffer on device %s", obj->videodev);
break;
default:
- GST_WARNING_OBJECT (pool->v4l2elem,
+ GST_WARNING_OBJECT (obj->element,
"Grabbing frame got interrupted on %s unexpectedly. %d: %s.",
- v4l2object->videodev, errno, g_strerror (errno));
+ obj->videodev, errno, g_strerror (errno));
break;
}
return NULL;
}
no_buffers:
{
- GST_ELEMENT_ERROR (pool->v4l2elem, RESOURCE, FAILED,
+ GST_ELEMENT_ERROR (obj->element, RESOURCE, FAILED,
(_("Failed trying to get video frames from device '%s'."),
- v4l2object->videodev),
+ obj->videodev),
(_("No free buffers found in the pool at index %d."), buffer.index));
GST_V4L2_BUFFER_POOL_UNLOCK (pool);
return NULL;
gboolean
gst_v4l2_object_set_format (GstV4l2Object * v4l2object, guint32 pixelformat,
- guint32 width, guint32 height, gboolean interlaced, guint32 * bytesperline)
+ guint32 width, guint32 height, gboolean interlaced)
{
gint fd = v4l2object->video_fd;
- struct v4l2_format format;
+ struct v4l2_format *format;
enum v4l2_field field;
if (interlaced) {
(pixelformat == GST_MAKE_FOURCC ('M', 'P', 'E', 'G')))
return TRUE;
- memset (&format, 0x00, sizeof (struct v4l2_format));
- format.type = v4l2object->type;
+ format = &v4l2object->format;
- if (v4l2_ioctl (fd, VIDIOC_G_FMT, &format) < 0)
+ memset (format, 0x00, sizeof (struct v4l2_format));
+ format->type = v4l2object->type;
+
+ if (v4l2_ioctl (fd, VIDIOC_G_FMT, format) < 0)
goto get_fmt_failed;
GST_DEBUG_OBJECT (v4l2object->element, "Got format to %dx%d, format "
- "%" GST_FOURCC_FORMAT " stride %d", format.fmt.pix.width,
- format.fmt.pix.height, GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
- format.fmt.pix.bytesperline);
-
- if (format.type == v4l2object->type &&
- format.fmt.pix.width == width &&
- format.fmt.pix.height == height &&
- format.fmt.pix.pixelformat == pixelformat &&
- format.fmt.pix.field == field) {
+ "%" GST_FOURCC_FORMAT " stride %d", format->fmt.pix.width,
+ format->fmt.pix.height, GST_FOURCC_ARGS (format->fmt.pix.pixelformat),
+ format->fmt.pix.bytesperline);
+
+ if (format->type == v4l2object->type &&
+ format->fmt.pix.width == width &&
+ format->fmt.pix.height == height &&
+ format->fmt.pix.pixelformat == pixelformat &&
+ format->fmt.pix.field == field) {
GST_DEBUG_OBJECT (v4l2object->element, "format was good");
/* Nothing to do. We want to succeed immediately
* here because setting the same format back
* any caps change would require us to go to NULL
* state to close the device and set format.
*/
- *bytesperline = format.fmt.pix.bytesperline;
return TRUE;
}
GST_DEBUG_OBJECT (v4l2object->element, "Setting format to %dx%d, format "
"%" GST_FOURCC_FORMAT, width, height, GST_FOURCC_ARGS (pixelformat));
- format.type = v4l2object->type;
- format.fmt.pix.width = width;
- format.fmt.pix.height = height;
- format.fmt.pix.pixelformat = pixelformat;
- format.fmt.pix.field = field;
+ format->type = v4l2object->type;
+ format->fmt.pix.width = width;
+ format->fmt.pix.height = height;
+ format->fmt.pix.pixelformat = pixelformat;
+ format->fmt.pix.field = field;
- if (v4l2_ioctl (fd, VIDIOC_S_FMT, &format) < 0)
+ if (v4l2_ioctl (fd, VIDIOC_S_FMT, format) < 0)
goto set_fmt_failed;
GST_DEBUG_OBJECT (v4l2object->element, "Got format to %dx%d, format "
- "%" GST_FOURCC_FORMAT " stride %d", format.fmt.pix.width,
- format.fmt.pix.height, GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
- format.fmt.pix.bytesperline);
+ "%" GST_FOURCC_FORMAT " stride %d", format->fmt.pix.width,
+ format->fmt.pix.height, GST_FOURCC_ARGS (format->fmt.pix.pixelformat),
+ format->fmt.pix.bytesperline);
- if (format.fmt.pix.width != width || format.fmt.pix.height != height)
+ if (format->fmt.pix.width != width || format->fmt.pix.height != height)
goto invalid_dimensions;
- if (format.fmt.pix.pixelformat != pixelformat)
+ if (format->fmt.pix.pixelformat != pixelformat)
goto invalid_pixelformat;
- *bytesperline = format.fmt.pix.bytesperline;
-
return TRUE;
/* ERRORS */
(_("Device '%s' cannot capture at %dx%d"),
v4l2object->videodev, width, height),
("Tried to capture at %dx%d, but device returned size %dx%d",
- width, height, format.fmt.pix.width, format.fmt.pix.height));
+ width, height, format->fmt.pix.width, format->fmt.pix.height));
return FALSE;
}
invalid_pixelformat:
("Tried to capture in %" GST_FOURCC_FORMAT
", but device returned format" " %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (pixelformat),
- GST_FOURCC_ARGS (format.fmt.pix.pixelformat)));
+ GST_FOURCC_ARGS (format->fmt.pix.pixelformat)));
return FALSE;
}
}