<div dir="ltr"> <div class="gmail_extra"> <div class="gmail_quote">On Mon, Jan 23, 2017 at 10:19 PM, Ben Widawsky <<a href="mailto:ben@bwidawsk.net" target="_blank">ben@bwidawsk.net</a>> wrote: <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Unlike stride, there was no previous offset getter, so it can be right on the first try. v2: Return EINVAL when plane is greater than total planes to make it match the similar APIs. Avoid leak after fromPlanar (Daniel) Make sure when getting offsets we consider dumb images (Daniel) Signed-off-by: Ben Widawsky <<a href="mailto:ben@bwidawsk.net">ben@bwidawsk.net</a>> Reviewed-by: Eric Engestrom <<a href="mailto:eric.engestrom@imgtec.com">eric.engestrom@imgtec.com</a>> Acked-by: Daniel Stone <<a href="mailto:daniels@collabora.com">daniels@collabora.com</a>> --- src/gbm/backends/dri/gbm_dri.c | 36 ++++++++++++++++++++++++++++++++++++ src/gbm/gbm-symbols-check | 1 + src/gbm/main/gbm.c | 15 +++++++++++++++ src/gbm/main/gbm.h | 3 +++ src/gbm/main/gbmint.h | 1 + 5 files changed, 56 insertions(+) diff --git a/src/gbm/backends/dri/gbm_dri.c b/src/gbm/backends/dri/gbm_dri.c index 395f78e851..43f8e15e62 100644 --- a/src/gbm/backends/dri/gbm_dri.c +++ b/src/gbm/backends/dri/gbm_dri.c @@ -697,6 +697,41 @@ gbm_dri_bo_get_stride(struct gbm_bo *_bo, int plane) return (uint32_t)stride; } +static uint32_t +gbm_dri_bo_get_offset(struct gbm_bo *_bo, int plane) +{ + struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm); + struct gbm_dri_bo *bo = gbm_dri_bo(_bo); + int offset = 0; + + if (!dri->image || dri->image->base.version < 13 || !dri->image->fromPlanar) { + errno = ENOSYS; + return 0; + } + + if (plane >= get_number_planes(dri, bo->image)) { + errno = EINVAL; + return 0; + } + + /* Dumb images have no offset */ + if (!bo->image) + return 0; + + __DRIimage *image = dri->image->fromPlanar(bo->image, plane, NULL); + if (!image) { + /* Use the parent offset */ + image = bo->image; + } + + dri->image->queryImage(image, __DRI_IMAGE_ATTRIB_OFFSET, &offset); + + if (image != bo->image) + dri->image->destroyImage(image); </blockquote><div> </div><div>It's a bit unclear to me how this if is related to the one above. Is it possible for fromPlanar to return bo->image or does fromPlanar always create a new image? Would this be more clear: </div><div>__DRIimage *plane_image = dri->image->fromPlanar(bo->image, plane, NULL); </div><div>if (plane_image) { </div><div> dri->image->queryImage(plane_image, __DRI_IMAGE_ATTRIB_OFFSET, &offset); </div><div> dri->image->destroyImage(plane_image); </div><div>} else { dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_OFFSET, &offset); } </div><div>It appears to me as if that's what you're trying to accomplish but I don't really understand the ownership semantics of fromPlanar. </div><div>This question also applies to the previous patch. </div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> + + return (uint32_t)offset; +} + static void gbm_dri_bo_destroy(struct gbm_bo *_bo) { @@ -1157,6 +1192,7 @@ dri_device_create(int fd) dri->base.base.bo_get_planes = gbm_dri_bo_get_planes; dri->base.base.bo_get_handle = gbm_dri_bo_get_handle_for_plane; dri->base.base.bo_get_stride = gbm_dri_bo_get_stride; + dri->base.base.bo_get_offset = gbm_dri_bo_get_offset; dri->base.base.bo_destroy = gbm_dri_bo_destroy; dri->base.base.destroy = dri_destroy; dri->base.base.surface_create = gbm_dri_surface_create; diff --git a/src/gbm/gbm-symbols-check b/src/gbm/gbm-symbols-check index 459006a63f..7ff78ab400 100755 --- a/src/gbm/gbm-symbols-check +++ b/src/gbm/gbm-symbols-check @@ -16,6 +16,7 @@ gbm_bo_get_height gbm_bo_get_stride gbm_bo_get_stride_for_plane gbm_bo_get_format +gbm_bo_get_offset gbm_bo_get_device gbm_bo_get_handle gbm_bo_get_fd diff --git a/src/gbm/main/gbm.c b/src/gbm/main/gbm.c index 0a9f0bef7e..295f6894eb 100644 --- a/src/gbm/main/gbm.c +++ b/src/gbm/main/gbm.c @@ -194,6 +194,21 @@ gbm_bo_get_format(struct gbm_bo *bo) return bo->format; } +/** Get the offset for the data of the specified plane + * + * Extra planes, and even the first plane, may have an offset from the start of + * the buffer object. This function will provide the offset for the given plane + * to be used in various KMS APIs. + * + * \param bo The buffer object + * \return The offset + */ +GBM_EXPORT uint32_t +gbm_bo_get_offset(struct gbm_bo *bo, int plane) +{ + return bo->gbm->bo_get_offset(bo, plane); +} + /** Get the gbm device used to create the buffer object * * \param bo The buffer object diff --git a/src/gbm/main/gbm.h b/src/gbm/main/gbm.h index 1719c5312a..b089359b01 100644 --- a/src/gbm/main/gbm.h +++ b/src/gbm/main/gbm.h @@ -309,6 +309,9 @@ gbm_bo_get_stride_for_plane(struct gbm_bo *bo, int plane); uint32_t gbm_bo_get_format(struct gbm_bo *bo); +uint32_t +gbm_bo_get_offset(struct gbm_bo *bo, int plane); + struct gbm_device * gbm_bo_get_device(struct gbm_bo *bo); diff --git a/src/gbm/main/gbmint.h b/src/gbm/main/gbmint.h index 26d18bab6b..ac6078361a 100644 --- a/src/gbm/main/gbmint.h +++ b/src/gbm/main/gbmint.h @@ -79,6 +79,7 @@ struct gbm_device { int (*bo_get_planes)(struct gbm_bo *bo); union gbm_bo_handle (*bo_get_handle)(struct gbm_bo *bo, int plane); uint32_t (*bo_get_stride)(struct gbm_bo *bo, int plane); + uint32_t (*bo_get_offset)(struct gbm_bo *bo, int plane); void (*bo_destroy)(struct gbm_bo *bo); struct gbm_surface *(*surface_create)(struct gbm_device *gbm, -- 2.11.0 _______________________________________________ mesa-dev mailing list <a href="mailto:mesa-dev@lists.freedesktop.org">mesa-dev@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/mesa-dev" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/mesa-dev</a> </blockquote></div> </div></div>