mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-27 12:11:13 +00:00
v4l2: Fixup USERPTR/DMABUF capture support
This commit is contained in:
Nicolas Dufresne
parent
7f8eff7845
commit
62605e11eb
3 changed files with 192 additions and 174 deletions
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@ -489,9 +489,110 @@ gst_v4l2_allocator_probe (GstV4l2Allocator * allocator, guint32 memory,
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return flags;
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}
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static GstV4l2MemoryGroup *
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gst_v4l2_allocator_create_buf (GstV4l2Allocator * allocator)
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{
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struct v4l2_create_buffers bcreate = { 0 };
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GstV4l2MemoryGroup *group = NULL;
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GST_OBJECT_LOCK (allocator);
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if (!allocator->active)
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goto done;
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bcreate.memory = allocator->memory;
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bcreate.format = allocator->format;
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bcreate.count = 1;
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if (!allocator->can_allocate)
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goto done;
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if (v4l2_ioctl (allocator->video_fd, VIDIOC_CREATE_BUFS, &bcreate) < 0)
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goto create_bufs_failed;
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group = gst_v4l2_memory_group_new (allocator, bcreate.index);
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if (group) {
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allocator->groups[bcreate.index] = group;
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allocator->count++;
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}
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done:
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GST_OBJECT_UNLOCK (allocator);
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return group;
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create_bufs_failed:
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{
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GST_WARNING_OBJECT (allocator, "error creating a new buffer: %s",
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g_strerror (errno));
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goto done;
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}
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}
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static GstV4l2MemoryGroup *
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gst_v4l2_allocator_alloc (GstV4l2Allocator * allocator)
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{
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GstV4l2MemoryGroup *group;
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if (!g_atomic_int_get (&allocator->active))
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return NULL;
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group = gst_atomic_queue_pop (allocator->free_queue);
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if (group == NULL) {
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if (allocator->can_allocate) {
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group = gst_v4l2_allocator_create_buf (allocator);
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/* Don't hammer on CREATE_BUFS */
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if (group == NULL)
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allocator->can_allocate = FALSE;
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}
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}
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return group;
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}
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static void
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gst_v4l2_allocator_reset_size (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup * group)
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{
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gsize size;
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if (V4L2_TYPE_IS_MULTIPLANAR (allocator->type)) {
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gint i;
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for (i = 0; i < group->n_mem; i++) {
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size = allocator->format.fmt.pix_mp.plane_fmt[i].sizeimage;
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gst_memory_resize (group->mem[i], 0, size);
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}
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} else {
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size = allocator->format.fmt.pix.sizeimage;
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gst_memory_resize (group->mem[0], 0, size);
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}
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}
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static void
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_cleanup_failed_alloc (GstV4l2Allocator * allocator, GstV4l2MemoryGroup * group)
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{
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if (group->mems_allocated > 0) {
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gint i;
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/* If one or more mmap worked, we need to unref the memory, otherwise
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* they will keep a ref on the allocator and leak it. This will put back
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* the group into the free_queue */
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for (i = 0; i < group->n_mem; i++)
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gst_memory_unref (group->mem[i]);
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} else {
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/* Otherwise, group has to be on free queue for _stop() to work */
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gst_atomic_queue_push (allocator->free_queue, group);
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}
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}
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GstV4l2Allocator *
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gst_v4l2_allocator_new (GstObject * parent, gint video_fd,
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struct v4l2_format * format)
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struct v4l2_format *format)
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{
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GstV4l2Allocator *allocator;
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guint32 flags = 0;
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@ -658,85 +759,6 @@ reqbufs_failed:
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}
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}
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static GstV4l2MemoryGroup *
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gst_v4l2_allocator_create_buf (GstV4l2Allocator * allocator)
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{
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struct v4l2_create_buffers bcreate = { 0 };
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GstV4l2MemoryGroup *group = NULL;
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GST_OBJECT_LOCK (allocator);
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if (!allocator->active)
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goto done;
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bcreate.memory = allocator->memory;
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bcreate.format = allocator->format;
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bcreate.count = 1;
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if (!allocator->can_allocate)
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goto done;
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if (v4l2_ioctl (allocator->video_fd, VIDIOC_CREATE_BUFS, &bcreate) < 0)
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goto create_bufs_failed;
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group = gst_v4l2_memory_group_new (allocator, bcreate.index);
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if (group) {
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allocator->groups[bcreate.index] = group;
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allocator->count++;
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}
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done:
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GST_OBJECT_UNLOCK (allocator);
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return group;
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create_bufs_failed:
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{
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GST_WARNING_OBJECT (allocator, "error creating a new buffer: %s",
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g_strerror (errno));
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goto done;
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}
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}
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static GstV4l2MemoryGroup *
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gst_v4l2_allocator_alloc (GstV4l2Allocator * allocator)
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{
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GstV4l2MemoryGroup *group;
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if (!g_atomic_int_get (&allocator->active))
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return NULL;
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group = gst_atomic_queue_pop (allocator->free_queue);
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if (group == NULL) {
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if (allocator->can_allocate) {
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group = gst_v4l2_allocator_create_buf (allocator);
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/* Don't hammer on CREATE_BUFS */
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if (group == NULL)
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allocator->can_allocate = FALSE;
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}
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}
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return group;
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}
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static void
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_cleanup_failed_alloc (GstV4l2Allocator * allocator, GstV4l2MemoryGroup * group)
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{
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if (group->mems_allocated > 0) {
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gint i;
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/* If one or more mmap worked, we need to unref the memory, otherwise
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* they will keep a ref on the allocator and leak it. This will put back
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* the group into the free_queue */
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for (i = 0; i < group->n_mem; i++)
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gst_memory_unref (group->mem[i]);
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} else {
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/* Otherwise, group has to be on free queue for _stop() to work */
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gst_atomic_queue_push (allocator->free_queue, group);
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}
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}
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GstV4l2MemoryGroup *
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gst_v4l2_allocator_alloc_mmap (GstV4l2Allocator * allocator)
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{
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@ -869,6 +891,45 @@ cleanup:
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}
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}
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static void
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gst_v4l2_allocator_clear_dmabufin (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup * group)
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{
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GstV4l2Memory *mem;
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gint i;
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g_return_if_fail (allocator->memory == V4L2_MEMORY_DMABUF);
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for (i = 0; i < group->n_mem; i++) {
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mem = (GstV4l2Memory *) group->mem[i];
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GST_LOG_OBJECT (allocator, "clearing DMABUF import, fd %i plane %d",
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mem->dmafd, i);
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if (mem->dmafd >= 0)
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close (mem->dmafd);
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/* Update memory */
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mem->mem.maxsize = 0;
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mem->mem.offset = 0;
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mem->mem.size = 0;
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mem->dmafd = -1;
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/* Update v4l2 structure */
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group->planes[i].length = 0;
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group->planes[i].bytesused = 0;
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group->planes[i].m.fd = -1;
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group->planes[i].data_offset = 0;
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}
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if (!V4L2_TYPE_IS_MULTIPLANAR (allocator->type)) {
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group->buffer.bytesused = 0;
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group->buffer.length = 0;
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group->buffer.m.fd = -1;
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}
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}
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GstV4l2MemoryGroup *
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gst_v4l2_allocator_alloc_dmabufin (GstV4l2Allocator * allocator)
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{
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@ -901,6 +962,37 @@ gst_v4l2_allocator_alloc_dmabufin (GstV4l2Allocator * allocator)
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return group;
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}
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static void
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gst_v4l2_allocator_clear_userptr (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup * group)
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{
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GstV4l2Memory *mem;
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gint i;
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g_return_if_fail (allocator->memory == V4L2_MEMORY_USERPTR);
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for (i = 0; i < group->n_mem; i++) {
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mem = (GstV4l2Memory *) group->mem[i];
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GST_LOG_OBJECT (allocator, "clearing USERPTR %p plane %d size %"
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G_GSIZE_FORMAT, mem->data, i, mem->mem.size);
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mem->mem.maxsize = 0;
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mem->mem.size = 0;
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mem->data = NULL;
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group->planes[i].length = 0;
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group->planes[i].bytesused = 0;
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group->planes[i].m.userptr = 0;
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}
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if (!V4L2_TYPE_IS_MULTIPLANAR (allocator->type)) {
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group->buffer.bytesused = 0;
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group->buffer.length = 0;
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group->buffer.m.userptr = 0;
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}
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}
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GstV4l2MemoryGroup *
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gst_v4l2_allocator_alloc_userptr (GstV4l2Allocator * allocator)
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{
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@ -1005,46 +1097,6 @@ dup_failed:
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}
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}
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void
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gst_v4l2_allocator_clear_dmabufin (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup * group)
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{
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GstV4l2Memory *mem;
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gint i;
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g_return_if_fail (allocator->memory == V4L2_MEMORY_DMABUF);
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for (i = 0; i < group->n_mem; i++) {
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mem = (GstV4l2Memory *) group->mem[i];
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GST_LOG_OBJECT (allocator, "clearing DMABUF import, fd %i plane %d",
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mem->dmafd, i);
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if (mem->dmafd >= 0)
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close (mem->dmafd);
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/* Update memory */
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mem->mem.maxsize = 0;
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mem->mem.offset = 0;
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mem->mem.size = 0;
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mem->dmafd = -1;
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/* Update v4l2 structure */
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group->planes[i].length = 0;
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group->planes[i].bytesused = 0;
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group->planes[i].m.fd = -1;
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group->planes[i].data_offset = 0;
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}
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if (!V4L2_TYPE_IS_MULTIPLANAR (allocator->type)) {
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group->buffer.bytesused = 0;
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group->buffer.length = 0;
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group->buffer.m.fd = -1;
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}
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}
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gboolean
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gst_v4l2_allocator_import_userptr (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup * group, gsize img_size, int n_planes,
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@ -1111,37 +1163,6 @@ n_mem_missmatch:
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}
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}
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void
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gst_v4l2_allocator_clear_userptr (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup * group)
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{
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GstV4l2Memory *mem;
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gint i;
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g_return_if_fail (allocator->memory == V4L2_MEMORY_USERPTR);
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for (i = 0; i < group->n_mem; i++) {
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mem = (GstV4l2Memory *) group->mem[i];
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GST_LOG_OBJECT (allocator, "clearing USERPTR %p plane %d size %"
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G_GSIZE_FORMAT, mem->data, i, mem->mem.size);
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mem->mem.maxsize = 0;
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mem->mem.size = 0;
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mem->data = NULL;
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group->planes[i].length = 0;
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group->planes[i].bytesused = 0;
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group->planes[i].m.userptr = 0;
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}
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if (!V4L2_TYPE_IS_MULTIPLANAR (allocator->type)) {
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group->buffer.bytesused = 0;
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group->buffer.length = 0;
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group->buffer.m.userptr = 0;
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}
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}
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void
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gst_v4l2_allocator_flush (GstV4l2Allocator * allocator)
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{
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@ -1322,21 +1343,21 @@ error:
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}
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void
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gst_v4l2_allocator_reset_size (GstV4l2Allocator * allocator,
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gst_v4l2_allocator_reset_group (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup * group)
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{
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gsize size;
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if (V4L2_TYPE_IS_MULTIPLANAR (allocator->type)) {
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gint i;
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for (i = 0; i < group->n_mem; i++) {
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size = allocator->format.fmt.pix_mp.plane_fmt[i].sizeimage;
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gst_memory_resize (group->mem[i], 0, size);
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}
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} else {
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size = allocator->format.fmt.pix.sizeimage;
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gst_memory_resize (group->mem[0], 0, size);
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switch (allocator->memory) {
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case V4L2_MEMORY_USERPTR:
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gst_v4l2_allocator_clear_userptr (allocator, group);
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break;
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case V4L2_MEMORY_DMABUF:
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gst_v4l2_allocator_clear_dmabufin (allocator, group);
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break;
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case V4L2_MEMORY_MMAP:
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gst_v4l2_allocator_reset_size (allocator, group);
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break;
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default:
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g_assert_not_reached ();
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break;
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}
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}
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@ -134,18 +134,11 @@ gboolean gst_v4l2_allocator_import_dmabuf (GstV4l2Allocator * alloc
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GstV4l2MemoryGroup *group,
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gint n_mem, GstMemory ** dma_mem);
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void gst_v4l2_allocator_clear_dmabufin (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup *group);
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gboolean gst_v4l2_allocator_import_userptr (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup *group,
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gsize img_size, int n_planes,
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gpointer * data, gsize * offset);
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void gst_v4l2_allocator_clear_userptr (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup *group);
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void gst_v4l2_allocator_flush (GstV4l2Allocator * allocator);
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gboolean gst_v4l2_allocator_qbuf (GstV4l2Allocator * allocator,
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@ -153,7 +146,7 @@ gboolean gst_v4l2_allocator_qbuf (GstV4l2Allocator * alloc
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GstV4l2MemoryGroup* gst_v4l2_allocator_dqbuf (GstV4l2Allocator * allocator);
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void gst_v4l2_allocator_reset_size (GstV4l2Allocator * allocator,
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void gst_v4l2_allocator_reset_group (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup * group);
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G_END_DECLS
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@ -1334,8 +1334,12 @@ gst_v4l2_buffer_pool_release_buffer (GstBufferPool * bpool, GstBuffer * buffer)
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GST_LOG_OBJECT (pool, "buffer %u not queued, putting on free list",
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index);
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/* Remove qdata, this will unmap any map data in userptr */
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gst_mini_object_set_qdata (GST_MINI_OBJECT (buffer),
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GST_V4L2_IMPORT_QUARK, NULL, NULL);
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/* reset to default size */
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gst_v4l2_allocator_reset_size (pool->vallocator, group);
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gst_v4l2_allocator_reset_group (pool->vallocator, group);
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/* playback, put the buffer back in the queue to refill later. */
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GST_BUFFER_POOL_CLASS (parent_class)->release_buffer (bpool,
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