diff options
| author | Stanimir Varbanov <stanimir.varbanov@linaro.org> | 2017-06-15 13:31:42 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-06-20 08:53:39 -0300 |
| commit | d498756451a93e233eb980e03905f5f8950ad159 (patch) | |
| tree | 65040e738c68abfacd78eb872bb23decc28c5541 /drivers/media/v4l2-core | |
| parent | ff6ccad361df4dfda42b60897cb7e55b3ba13439 (diff) | |
[media] media: v4l2-mem2mem: extend m2m APIs for more accurate buffer management
this add functions for:
- remove buffers from src/dst queue by index
- remove exact buffer from src/dst queue
also extends m2m API to iterate over a list of src/dst buffers
in safely and non-safely manner.
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/v4l2-core')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-mem2mem.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index 6bc27e7b2a33..f62e68aa04c4 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -126,6 +126,43 @@ void *v4l2_m2m_buf_remove(struct v4l2_m2m_queue_ctx *q_ctx) } EXPORT_SYMBOL_GPL(v4l2_m2m_buf_remove); +void v4l2_m2m_buf_remove_by_buf(struct v4l2_m2m_queue_ctx *q_ctx, + struct vb2_v4l2_buffer *vbuf) +{ + struct v4l2_m2m_buffer *b; + unsigned long flags; + + spin_lock_irqsave(&q_ctx->rdy_spinlock, flags); + b = container_of(vbuf, struct v4l2_m2m_buffer, vb); + list_del(&b->list); + q_ctx->num_rdy--; + spin_unlock_irqrestore(&q_ctx->rdy_spinlock, flags); +} +EXPORT_SYMBOL_GPL(v4l2_m2m_buf_remove_by_buf); + +struct vb2_v4l2_buffer * +v4l2_m2m_buf_remove_by_idx(struct v4l2_m2m_queue_ctx *q_ctx, unsigned int idx) + +{ + struct v4l2_m2m_buffer *b, *tmp; + struct vb2_v4l2_buffer *ret = NULL; + unsigned long flags; + + spin_lock_irqsave(&q_ctx->rdy_spinlock, flags); + list_for_each_entry_safe(b, tmp, &q_ctx->rdy_queue, list) { + if (b->vb.vb2_buf.index == idx) { + list_del(&b->list); + q_ctx->num_rdy--; + ret = &b->vb; + break; + } + } + spin_unlock_irqrestore(&q_ctx->rdy_spinlock, flags); + + return ret; +} +EXPORT_SYMBOL_GPL(v4l2_m2m_buf_remove_by_idx); + /* * Scheduling handlers */ |