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Diffstat (limited to 'widget/gtk/wayland/linux-dmabuf-unstable-v1-client-protocol.h')
| -rw-r--r-- | widget/gtk/wayland/linux-dmabuf-unstable-v1-client-protocol.h | 650 |
1 files changed, 650 insertions, 0 deletions
diff --git a/widget/gtk/wayland/linux-dmabuf-unstable-v1-client-protocol.h b/widget/gtk/wayland/linux-dmabuf-unstable-v1-client-protocol.h new file mode 100644 index 0000000000..cff0426a9c --- /dev/null +++ b/widget/gtk/wayland/linux-dmabuf-unstable-v1-client-protocol.h @@ -0,0 +1,650 @@ +/* Generated by wayland-scanner 1.17.0 */ + +#ifndef LINUX_DMABUF_UNSTABLE_V1_CLIENT_PROTOCOL_H +#define LINUX_DMABUF_UNSTABLE_V1_CLIENT_PROTOCOL_H + +#include <stdint.h> +#include <stddef.h> +#include "wayland-client.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @page page_linux_dmabuf_unstable_v1 The linux_dmabuf_unstable_v1 protocol + * @section page_ifaces_linux_dmabuf_unstable_v1 Interfaces + * - @subpage page_iface_zwp_linux_dmabuf_v1 - factory for creating dmabuf-based + * wl_buffers + * - @subpage page_iface_zwp_linux_buffer_params_v1 - parameters for creating a + * dmabuf-based wl_buffer + * @section page_copyright_linux_dmabuf_unstable_v1 Copyright + * <pre> + * + * Copyright © 2014, 2015 Collabora, Ltd. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * </pre> + */ +struct wl_buffer; +struct zwp_linux_buffer_params_v1; +struct zwp_linux_dmabuf_v1; + +/** + * @page page_iface_zwp_linux_dmabuf_v1 zwp_linux_dmabuf_v1 + * @section page_iface_zwp_linux_dmabuf_v1_desc Description + * + * Following the interfaces from: + * https://www.khronos.org/registry/egl/extensions/EXT/EGL_EXT_image_dma_buf_import.txt + * and the Linux DRM sub-system's AddFb2 ioctl. + * + * This interface offers ways to create generic dmabuf-based + * wl_buffers. Immediately after a client binds to this interface, + * the set of supported formats and format modifiers is sent with + * 'format' and 'modifier' events. + * + * The following are required from clients: + * + * - Clients must ensure that either all data in the dma-buf is + * coherent for all subsequent read access or that coherency is + * correctly handled by the underlying kernel-side dma-buf + * implementation. + * + * - Don't make any more attachments after sending the buffer to the + * compositor. Making more attachments later increases the risk of + * the compositor not being able to use (re-import) an existing + * dmabuf-based wl_buffer. + * + * The underlying graphics stack must ensure the following: + * + * - The dmabuf file descriptors relayed to the server will stay valid + * for the whole lifetime of the wl_buffer. This means the server may + * at any time use those fds to import the dmabuf into any kernel + * sub-system that might accept it. + * + * To create a wl_buffer from one or more dmabufs, a client creates a + * zwp_linux_dmabuf_params_v1 object with a zwp_linux_dmabuf_v1.create_params + * request. All planes required by the intended format are added with + * the 'add' request. Finally, a 'create' or 'create_immed' request is + * issued, which has the following outcome depending on the import success. + * + * The 'create' request, + * - on success, triggers a 'created' event which provides the final + * wl_buffer to the client. + * - on failure, triggers a 'failed' event to convey that the server + * cannot use the dmabufs received from the client. + * + * For the 'create_immed' request, + * - on success, the server immediately imports the added dmabufs to + * create a wl_buffer. No event is sent from the server in this case. + * - on failure, the server can choose to either: + * - terminate the client by raising a fatal error. + * - mark the wl_buffer as failed, and send a 'failed' event to the + * client. If the client uses a failed wl_buffer as an argument to any + * request, the behaviour is compositor implementation-defined. + * + * Warning! The protocol described in this file is experimental and + * backward incompatible changes may be made. Backward compatible changes + * may be added together with the corresponding interface version bump. + * Backward incompatible changes are done by bumping the version number in + * the protocol and interface names and resetting the interface version. + * Once the protocol is to be declared stable, the 'z' prefix and the + * version number in the protocol and interface names are removed and the + * interface version number is reset. + * @section page_iface_zwp_linux_dmabuf_v1_api API + * See @ref iface_zwp_linux_dmabuf_v1. + */ +/** + * @defgroup iface_zwp_linux_dmabuf_v1 The zwp_linux_dmabuf_v1 interface + * + * Following the interfaces from: + * https://www.khronos.org/registry/egl/extensions/EXT/EGL_EXT_image_dma_buf_import.txt + * and the Linux DRM sub-system's AddFb2 ioctl. + * + * This interface offers ways to create generic dmabuf-based + * wl_buffers. Immediately after a client binds to this interface, + * the set of supported formats and format modifiers is sent with + * 'format' and 'modifier' events. + * + * The following are required from clients: + * + * - Clients must ensure that either all data in the dma-buf is + * coherent for all subsequent read access or that coherency is + * correctly handled by the underlying kernel-side dma-buf + * implementation. + * + * - Don't make any more attachments after sending the buffer to the + * compositor. Making more attachments later increases the risk of + * the compositor not being able to use (re-import) an existing + * dmabuf-based wl_buffer. + * + * The underlying graphics stack must ensure the following: + * + * - The dmabuf file descriptors relayed to the server will stay valid + * for the whole lifetime of the wl_buffer. This means the server may + * at any time use those fds to import the dmabuf into any kernel + * sub-system that might accept it. + * + * To create a wl_buffer from one or more dmabufs, a client creates a + * zwp_linux_dmabuf_params_v1 object with a zwp_linux_dmabuf_v1.create_params + * request. All planes required by the intended format are added with + * the 'add' request. Finally, a 'create' or 'create_immed' request is + * issued, which has the following outcome depending on the import success. + * + * The 'create' request, + * - on success, triggers a 'created' event which provides the final + * wl_buffer to the client. + * - on failure, triggers a 'failed' event to convey that the server + * cannot use the dmabufs received from the client. + * + * For the 'create_immed' request, + * - on success, the server immediately imports the added dmabufs to + * create a wl_buffer. No event is sent from the server in this case. + * - on failure, the server can choose to either: + * - terminate the client by raising a fatal error. + * - mark the wl_buffer as failed, and send a 'failed' event to the + * client. If the client uses a failed wl_buffer as an argument to any + * request, the behaviour is compositor implementation-defined. + * + * Warning! The protocol described in this file is experimental and + * backward incompatible changes may be made. Backward compatible changes + * may be added together with the corresponding interface version bump. + * Backward incompatible changes are done by bumping the version number in + * the protocol and interface names and resetting the interface version. + * Once the protocol is to be declared stable, the 'z' prefix and the + * version number in the protocol and interface names are removed and the + * interface version number is reset. + */ +extern const struct wl_interface zwp_linux_dmabuf_v1_interface; +/** + * @page page_iface_zwp_linux_buffer_params_v1 zwp_linux_buffer_params_v1 + * @section page_iface_zwp_linux_buffer_params_v1_desc Description + * + * This temporary object is a collection of dmabufs and other + * parameters that together form a single logical buffer. The temporary + * object may eventually create one wl_buffer unless cancelled by + * destroying it before requesting 'create'. + * + * Single-planar formats only require one dmabuf, however + * multi-planar formats may require more than one dmabuf. For all + * formats, an 'add' request must be called once per plane (even if the + * underlying dmabuf fd is identical). + * + * You must use consecutive plane indices ('plane_idx' argument for 'add') + * from zero to the number of planes used by the drm_fourcc format code. + * All planes required by the format must be given exactly once, but can + * be given in any order. Each plane index can be set only once. + * @section page_iface_zwp_linux_buffer_params_v1_api API + * See @ref iface_zwp_linux_buffer_params_v1. + */ +/** + * @defgroup iface_zwp_linux_buffer_params_v1 The zwp_linux_buffer_params_v1 + * interface + * + * This temporary object is a collection of dmabufs and other + * parameters that together form a single logical buffer. The temporary + * object may eventually create one wl_buffer unless cancelled by + * destroying it before requesting 'create'. + * + * Single-planar formats only require one dmabuf, however + * multi-planar formats may require more than one dmabuf. For all + * formats, an 'add' request must be called once per plane (even if the + * underlying dmabuf fd is identical). + * + * You must use consecutive plane indices ('plane_idx' argument for 'add') + * from zero to the number of planes used by the drm_fourcc format code. + * All planes required by the format must be given exactly once, but can + * be given in any order. Each plane index can be set only once. + */ +extern const struct wl_interface zwp_linux_buffer_params_v1_interface; + +/** + * @ingroup iface_zwp_linux_dmabuf_v1 + * @struct zwp_linux_dmabuf_v1_listener + */ +struct zwp_linux_dmabuf_v1_listener { + /** + * supported buffer format + * + * This event advertises one buffer format that the server + * supports. All the supported formats are advertised once when the + * client binds to this interface. A roundtrip after binding + * guarantees that the client has received all supported formats. + * + * For the definition of the format codes, see the + * zwp_linux_buffer_params_v1::create request. + * + * Warning: the 'format' event is likely to be deprecated and + * replaced with the 'modifier' event introduced in + * zwp_linux_dmabuf_v1 version 3, described below. Please refrain + * from using the information received from this event. + * @param format DRM_FORMAT code + */ + void (*format)(void* data, struct zwp_linux_dmabuf_v1* zwp_linux_dmabuf_v1, + uint32_t format); + /** + * supported buffer format modifier + * + * This event advertises the formats that the server supports, + * along with the modifiers supported for each format. All the + * supported modifiers for all the supported formats are advertised + * once when the client binds to this interface. A roundtrip after + * binding guarantees that the client has received all supported + * format-modifier pairs. + * + * For the definition of the format and modifier codes, see the + * zwp_linux_buffer_params_v1::create request. + * @param format DRM_FORMAT code + * @param modifier_hi high 32 bits of layout modifier + * @param modifier_lo low 32 bits of layout modifier + * @since 3 + */ + void (*modifier)(void* data, struct zwp_linux_dmabuf_v1* zwp_linux_dmabuf_v1, + uint32_t format, uint32_t modifier_hi, uint32_t modifier_lo); +}; + +/** + * @ingroup iface_zwp_linux_dmabuf_v1 + */ +static inline int zwp_linux_dmabuf_v1_add_listener( + struct zwp_linux_dmabuf_v1* zwp_linux_dmabuf_v1, + const struct zwp_linux_dmabuf_v1_listener* listener, void* data) { + return wl_proxy_add_listener((struct wl_proxy*)zwp_linux_dmabuf_v1, + (void (**)(void))listener, data); +} + +#define ZWP_LINUX_DMABUF_V1_DESTROY 0 +#define ZWP_LINUX_DMABUF_V1_CREATE_PARAMS 1 + +/** + * @ingroup iface_zwp_linux_dmabuf_v1 + */ +#define ZWP_LINUX_DMABUF_V1_FORMAT_SINCE_VERSION 1 +/** + * @ingroup iface_zwp_linux_dmabuf_v1 + */ +#define ZWP_LINUX_DMABUF_V1_MODIFIER_SINCE_VERSION 3 + +/** + * @ingroup iface_zwp_linux_dmabuf_v1 + */ +#define ZWP_LINUX_DMABUF_V1_DESTROY_SINCE_VERSION 1 +/** + * @ingroup iface_zwp_linux_dmabuf_v1 + */ +#define ZWP_LINUX_DMABUF_V1_CREATE_PARAMS_SINCE_VERSION 1 + +/** @ingroup iface_zwp_linux_dmabuf_v1 */ +static inline void zwp_linux_dmabuf_v1_set_user_data( + struct zwp_linux_dmabuf_v1* zwp_linux_dmabuf_v1, void* user_data) { + wl_proxy_set_user_data((struct wl_proxy*)zwp_linux_dmabuf_v1, user_data); +} + +/** @ingroup iface_zwp_linux_dmabuf_v1 */ +static inline void* zwp_linux_dmabuf_v1_get_user_data( + struct zwp_linux_dmabuf_v1* zwp_linux_dmabuf_v1) { + return wl_proxy_get_user_data((struct wl_proxy*)zwp_linux_dmabuf_v1); +} + +static inline uint32_t zwp_linux_dmabuf_v1_get_version( + struct zwp_linux_dmabuf_v1* zwp_linux_dmabuf_v1) { + return wl_proxy_get_version((struct wl_proxy*)zwp_linux_dmabuf_v1); +} + +/** + * @ingroup iface_zwp_linux_dmabuf_v1 + * + * Objects created through this interface, especially wl_buffers, will + * remain valid. + */ +static inline void zwp_linux_dmabuf_v1_destroy( + struct zwp_linux_dmabuf_v1* zwp_linux_dmabuf_v1) { + wl_proxy_marshal((struct wl_proxy*)zwp_linux_dmabuf_v1, + ZWP_LINUX_DMABUF_V1_DESTROY); + + wl_proxy_destroy((struct wl_proxy*)zwp_linux_dmabuf_v1); +} + +/** + * @ingroup iface_zwp_linux_dmabuf_v1 + * + * This temporary object is used to collect multiple dmabuf handles into + * a single batch to create a wl_buffer. It can only be used once and + * should be destroyed after a 'created' or 'failed' event has been + * received. + */ +static inline struct zwp_linux_buffer_params_v1* +zwp_linux_dmabuf_v1_create_params( + struct zwp_linux_dmabuf_v1* zwp_linux_dmabuf_v1) { + struct wl_proxy* params_id; + + params_id = wl_proxy_marshal_constructor( + (struct wl_proxy*)zwp_linux_dmabuf_v1, ZWP_LINUX_DMABUF_V1_CREATE_PARAMS, + &zwp_linux_buffer_params_v1_interface, NULL); + + return (struct zwp_linux_buffer_params_v1*)params_id; +} + +#ifndef ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_ENUM +# define ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_ENUM +enum zwp_linux_buffer_params_v1_error { + /** + * the dmabuf_batch object has already been used to create a wl_buffer + */ + ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_ALREADY_USED = 0, + /** + * plane index out of bounds + */ + ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_PLANE_IDX = 1, + /** + * the plane index was already set + */ + ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_PLANE_SET = 2, + /** + * missing or too many planes to create a buffer + */ + ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INCOMPLETE = 3, + /** + * format not supported + */ + ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INVALID_FORMAT = 4, + /** + * invalid width or height + */ + ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INVALID_DIMENSIONS = 5, + /** + * offset + stride * height goes out of dmabuf bounds + */ + ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS = 6, + /** + * invalid wl_buffer resulted from importing dmabufs via the + * create_immed request on given buffer_params + */ + ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INVALID_WL_BUFFER = 7, +}; +#endif /* ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_ENUM */ + +#ifndef ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_ENUM +# define ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_ENUM +enum zwp_linux_buffer_params_v1_flags { + /** + * contents are y-inverted + */ + ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT = 1, + /** + * content is interlaced + */ + ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_INTERLACED = 2, + /** + * bottom field first + */ + ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_BOTTOM_FIRST = 4, +}; +#endif /* ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_ENUM */ + +/** + * @ingroup iface_zwp_linux_buffer_params_v1 + * @struct zwp_linux_buffer_params_v1_listener + */ +struct zwp_linux_buffer_params_v1_listener { + /** + * buffer creation succeeded + * + * This event indicates that the attempted buffer creation was + * successful. It provides the new wl_buffer referencing the + * dmabuf(s). + * + * Upon receiving this event, the client should destroy the + * zlinux_dmabuf_params object. + * @param buffer the newly created wl_buffer + */ + void (*created)(void* data, + struct zwp_linux_buffer_params_v1* zwp_linux_buffer_params_v1, + struct wl_buffer* buffer); + /** + * buffer creation failed + * + * This event indicates that the attempted buffer creation has + * failed. It usually means that one of the dmabuf constraints has + * not been fulfilled. + * + * Upon receiving this event, the client should destroy the + * zlinux_buffer_params object. + */ + void (*failed)(void* data, + struct zwp_linux_buffer_params_v1* zwp_linux_buffer_params_v1); +}; + +/** + * @ingroup iface_zwp_linux_buffer_params_v1 + */ +static inline int zwp_linux_buffer_params_v1_add_listener( + struct zwp_linux_buffer_params_v1* zwp_linux_buffer_params_v1, + const struct zwp_linux_buffer_params_v1_listener* listener, void* data) { + return wl_proxy_add_listener((struct wl_proxy*)zwp_linux_buffer_params_v1, + (void (**)(void))listener, data); +} + +#define ZWP_LINUX_BUFFER_PARAMS_V1_DESTROY 0 +#define ZWP_LINUX_BUFFER_PARAMS_V1_ADD 1 +#define ZWP_LINUX_BUFFER_PARAMS_V1_CREATE 2 +#define ZWP_LINUX_BUFFER_PARAMS_V1_CREATE_IMMED 3 + +/** + * @ingroup iface_zwp_linux_buffer_params_v1 + */ +#define ZWP_LINUX_BUFFER_PARAMS_V1_CREATED_SINCE_VERSION 1 +/** + * @ingroup iface_zwp_linux_buffer_params_v1 + */ +#define ZWP_LINUX_BUFFER_PARAMS_V1_FAILED_SINCE_VERSION 1 + +/** + * @ingroup iface_zwp_linux_buffer_params_v1 + */ +#define ZWP_LINUX_BUFFER_PARAMS_V1_DESTROY_SINCE_VERSION 1 +/** + * @ingroup iface_zwp_linux_buffer_params_v1 + */ +#define ZWP_LINUX_BUFFER_PARAMS_V1_ADD_SINCE_VERSION 1 +/** + * @ingroup iface_zwp_linux_buffer_params_v1 + */ +#define ZWP_LINUX_BUFFER_PARAMS_V1_CREATE_SINCE_VERSION 1 +/** + * @ingroup iface_zwp_linux_buffer_params_v1 + */ +#define ZWP_LINUX_BUFFER_PARAMS_V1_CREATE_IMMED_SINCE_VERSION 2 + +/** @ingroup iface_zwp_linux_buffer_params_v1 */ +static inline void zwp_linux_buffer_params_v1_set_user_data( + struct zwp_linux_buffer_params_v1* zwp_linux_buffer_params_v1, + void* user_data) { + wl_proxy_set_user_data((struct wl_proxy*)zwp_linux_buffer_params_v1, + user_data); +} + +/** @ingroup iface_zwp_linux_buffer_params_v1 */ +static inline void* zwp_linux_buffer_params_v1_get_user_data( + struct zwp_linux_buffer_params_v1* zwp_linux_buffer_params_v1) { + return wl_proxy_get_user_data((struct wl_proxy*)zwp_linux_buffer_params_v1); +} + +static inline uint32_t zwp_linux_buffer_params_v1_get_version( + struct zwp_linux_buffer_params_v1* zwp_linux_buffer_params_v1) { + return wl_proxy_get_version((struct wl_proxy*)zwp_linux_buffer_params_v1); +} + +/** + * @ingroup iface_zwp_linux_buffer_params_v1 + * + * Cleans up the temporary data sent to the server for dmabuf-based + * wl_buffer creation. + */ +static inline void zwp_linux_buffer_params_v1_destroy( + struct zwp_linux_buffer_params_v1* zwp_linux_buffer_params_v1) { + wl_proxy_marshal((struct wl_proxy*)zwp_linux_buffer_params_v1, + ZWP_LINUX_BUFFER_PARAMS_V1_DESTROY); + + wl_proxy_destroy((struct wl_proxy*)zwp_linux_buffer_params_v1); +} + +/** + * @ingroup iface_zwp_linux_buffer_params_v1 + * + * This request adds one dmabuf to the set in this + * zwp_linux_buffer_params_v1. + * + * The 64-bit unsigned value combined from modifier_hi and modifier_lo + * is the dmabuf layout modifier. DRM AddFB2 ioctl calls this the + * fb modifier, which is defined in drm_mode.h of Linux UAPI. + * This is an opaque token. Drivers use this token to express tiling, + * compression, etc. driver-specific modifications to the base format + * defined by the DRM fourcc code. + * + * This request raises the PLANE_IDX error if plane_idx is too large. + * The error PLANE_SET is raised if attempting to set a plane that + * was already set. + */ +static inline void zwp_linux_buffer_params_v1_add( + struct zwp_linux_buffer_params_v1* zwp_linux_buffer_params_v1, int32_t fd, + uint32_t plane_idx, uint32_t offset, uint32_t stride, uint32_t modifier_hi, + uint32_t modifier_lo) { + wl_proxy_marshal((struct wl_proxy*)zwp_linux_buffer_params_v1, + ZWP_LINUX_BUFFER_PARAMS_V1_ADD, fd, plane_idx, offset, + stride, modifier_hi, modifier_lo); +} + +/** + * @ingroup iface_zwp_linux_buffer_params_v1 + * + * This asks for creation of a wl_buffer from the added dmabuf + * buffers. The wl_buffer is not created immediately but returned via + * the 'created' event if the dmabuf sharing succeeds. The sharing + * may fail at runtime for reasons a client cannot predict, in + * which case the 'failed' event is triggered. + * + * The 'format' argument is a DRM_FORMAT code, as defined by the + * libdrm's drm_fourcc.h. The Linux kernel's DRM sub-system is the + * authoritative source on how the format codes should work. + * + * The 'flags' is a bitfield of the flags defined in enum "flags". + * 'y_invert' means the that the image needs to be y-flipped. + * + * Flag 'interlaced' means that the frame in the buffer is not + * progressive as usual, but interlaced. An interlaced buffer as + * supported here must always contain both top and bottom fields. + * The top field always begins on the first pixel row. The temporal + * ordering between the two fields is top field first, unless + * 'bottom_first' is specified. It is undefined whether 'bottom_first' + * is ignored if 'interlaced' is not set. + * + * This protocol does not convey any information about field rate, + * duration, or timing, other than the relative ordering between the + * two fields in one buffer. A compositor may have to estimate the + * intended field rate from the incoming buffer rate. It is undefined + * whether the time of receiving wl_surface.commit with a new buffer + * attached, applying the wl_surface state, wl_surface.frame callback + * trigger, presentation, or any other point in the compositor cycle + * is used to measure the frame or field times. There is no support + * for detecting missed or late frames/fields/buffers either, and + * there is no support whatsoever for cooperating with interlaced + * compositor output. + * + * The composited image quality resulting from the use of interlaced + * buffers is explicitly undefined. A compositor may use elaborate + * hardware features or software to deinterlace and create progressive + * output frames from a sequence of interlaced input buffers, or it + * may produce substandard image quality. However, compositors that + * cannot guarantee reasonable image quality in all cases are recommended + * to just reject all interlaced buffers. + * + * Any argument errors, including non-positive width or height, + * mismatch between the number of planes and the format, bad + * format, bad offset or stride, may be indicated by fatal protocol + * errors: INCOMPLETE, INVALID_FORMAT, INVALID_DIMENSIONS, + * OUT_OF_BOUNDS. + * + * Dmabuf import errors in the server that are not obvious client + * bugs are returned via the 'failed' event as non-fatal. This + * allows attempting dmabuf sharing and falling back in the client + * if it fails. + * + * This request can be sent only once in the object's lifetime, after + * which the only legal request is destroy. This object should be + * destroyed after issuing a 'create' request. Attempting to use this + * object after issuing 'create' raises ALREADY_USED protocol error. + * + * It is not mandatory to issue 'create'. If a client wants to + * cancel the buffer creation, it can just destroy this object. + */ +static inline void zwp_linux_buffer_params_v1_create( + struct zwp_linux_buffer_params_v1* zwp_linux_buffer_params_v1, + int32_t width, int32_t height, uint32_t format, uint32_t flags) { + wl_proxy_marshal((struct wl_proxy*)zwp_linux_buffer_params_v1, + ZWP_LINUX_BUFFER_PARAMS_V1_CREATE, width, height, format, + flags); +} + +/** + * @ingroup iface_zwp_linux_buffer_params_v1 + * + * This asks for immediate creation of a wl_buffer by importing the + * added dmabufs. + * + * In case of import success, no event is sent from the server, and the + * wl_buffer is ready to be used by the client. + * + * Upon import failure, either of the following may happen, as seen fit + * by the implementation: + * - the client is terminated with one of the following fatal protocol + * errors: + * - INCOMPLETE, INVALID_FORMAT, INVALID_DIMENSIONS, OUT_OF_BOUNDS, + * in case of argument errors such as mismatch between the number + * of planes and the format, bad format, non-positive width or + * height, or bad offset or stride. + * - INVALID_WL_BUFFER, in case the cause for failure is unknown or + * plaform specific. + * - the server creates an invalid wl_buffer, marks it as failed and + * sends a 'failed' event to the client. The result of using this + * invalid wl_buffer as an argument in any request by the client is + * defined by the compositor implementation. + * + * This takes the same arguments as a 'create' request, and obeys the + * same restrictions. + */ +static inline struct wl_buffer* zwp_linux_buffer_params_v1_create_immed( + struct zwp_linux_buffer_params_v1* zwp_linux_buffer_params_v1, + int32_t width, int32_t height, uint32_t format, uint32_t flags) { + struct wl_proxy* buffer_id; + + buffer_id = wl_proxy_marshal_constructor( + (struct wl_proxy*)zwp_linux_buffer_params_v1, + ZWP_LINUX_BUFFER_PARAMS_V1_CREATE_IMMED, &wl_buffer_interface, NULL, + width, height, format, flags); + + return (struct wl_buffer*)buffer_id; +} + +#ifdef __cplusplus +} +#endif + +#endif |