From 8824141b8d48d9120ddbf542d6fb661046c41c62 Mon Sep 17 00:00:00 2001 From: Jason Ekstrand Date: Wed, 16 Aug 2017 11:54:11 -0700 Subject: [PATCH] gbm: Add a gbm_device_get_format_modifier_plane_count function This allows the user to query the number of planes required by a given format+modifier combination without having to create a bo or surface. Reviewed-by: Emil Velikov Reviewed-by: Daniel Stone --- src/gbm/backends/dri/gbm_dri.c | 26 ++++++++++++++++++++++++++ src/gbm/main/gbm.c | 14 ++++++++++++++ src/gbm/main/gbm.h | 5 +++++ src/gbm/main/gbmint.h | 3 +++ 4 files changed, 48 insertions(+) diff --git a/src/gbm/backends/dri/gbm_dri.c b/src/gbm/backends/dri/gbm_dri.c index 46285245658..0a4853bf63d 100644 --- a/src/gbm/backends/dri/gbm_dri.c +++ b/src/gbm/backends/dri/gbm_dri.c @@ -639,6 +639,30 @@ gbm_dri_is_format_supported(struct gbm_device *gbm, return (count > 0); } +static int +gbm_dri_get_format_modifier_plane_count(struct gbm_device *gbm, + uint32_t format, + uint64_t modifier) +{ + struct gbm_dri_device *dri = gbm_dri_device(gbm); + uint64_t plane_count; + + if (dri->image->base.version < 16 || + !dri->image->queryDmaBufFormatModifierAttribs) + return -1; + + format = gbm_format_canonicalize(format); + if (gbm_format_to_dri_format(format) == 0) + return -1; + + if (!dri->image->queryDmaBufFormatModifierAttribs( + dri->screen, format, modifier, + __DRI_IMAGE_FORMAT_MODIFIER_ATTRIB_PLANE_COUNT, &plane_count)) + return -1; + + return plane_count; +} + static int gbm_dri_bo_write(struct gbm_bo *_bo, const void *buf, size_t count) { @@ -1350,6 +1374,8 @@ dri_device_create(int fd) dri->base.bo_map = gbm_dri_bo_map; dri->base.bo_unmap = gbm_dri_bo_unmap; dri->base.is_format_supported = gbm_dri_is_format_supported; + dri->base.get_format_modifier_plane_count = + gbm_dri_get_format_modifier_plane_count; dri->base.bo_write = gbm_dri_bo_write; dri->base.bo_get_fd = gbm_dri_bo_get_fd; dri->base.bo_get_planes = gbm_dri_bo_get_planes; diff --git a/src/gbm/main/gbm.c b/src/gbm/main/gbm.c index df61ff67748..0bf2922bacd 100644 --- a/src/gbm/main/gbm.c +++ b/src/gbm/main/gbm.c @@ -85,6 +85,20 @@ gbm_device_is_format_supported(struct gbm_device *gbm, return gbm->is_format_supported(gbm, format, usage); } +/** Get the number of planes that are required for a given format+modifier + * + * \param gbm The gbm device returned from gbm_create_device() + * \param format The format to query + * \param modifier The modifier to query + */ +GBM_EXPORT int +gbm_device_get_format_modifier_plane_count(struct gbm_device *gbm, + uint32_t format, + uint64_t modifier) +{ + return gbm->get_format_modifier_plane_count(gbm, format, modifier); +} + /** Destroy the gbm device and free all resources associated with it. * * \param gbm The device created using gbm_create_device() diff --git a/src/gbm/main/gbm.h b/src/gbm/main/gbm.h index aed26a01621..7710e61b132 100644 --- a/src/gbm/main/gbm.h +++ b/src/gbm/main/gbm.h @@ -238,6 +238,11 @@ int gbm_device_is_format_supported(struct gbm_device *gbm, uint32_t format, uint32_t usage); +int +gbm_device_get_format_modifier_plane_count(struct gbm_device *gbm, + uint32_t format, + uint64_t modifier); + void gbm_device_destroy(struct gbm_device *gbm); diff --git a/src/gbm/main/gbmint.h b/src/gbm/main/gbmint.h index c27a7a560ae..9220a4ae87d 100644 --- a/src/gbm/main/gbmint.h +++ b/src/gbm/main/gbmint.h @@ -61,6 +61,9 @@ struct gbm_device { int (*is_format_supported)(struct gbm_device *gbm, uint32_t format, uint32_t usage); + int (*get_format_modifier_plane_count)(struct gbm_device *device, + uint32_t format, + uint64_t modifier); struct gbm_bo *(*bo_create)(struct gbm_device *gbm, uint32_t width, uint32_t height, -- 2.30.2