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22 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 * Video Acceleration (VA) API Specification
28 * <jonathan.bian@intel.com>
31 * rev 0.10 (12/10/2006 Jonathan Bian) - Initial draft
32 * rev 0.11 (12/15/2006 Jonathan Bian) - Fixed some errors
33 * rev 0.12 (02/05/2007 Jonathan Bian) - Added VC-1 data structures for slice level decode
34 * rev 0.13 (02/28/2007 Jonathan Bian) - Added GetDisplay()
35 * rev 0.14 (04/13/2007 Jonathan Bian) - Fixed MPEG-2 PictureParameter structure, cleaned up a few funcs.
36 * rev 0.15 (04/20/2007 Jonathan Bian) - Overhauled buffer management
37 * rev 0.16 (05/02/2007 Jonathan Bian) - Added error codes and fixed some issues with configuration
38 * rev 0.17 (05/07/2007 Jonathan Bian) - Added H.264/AVC data structures for slice level decode.
39 * rev 0.18 (05/14/2007 Jonathan Bian) - Added data structures for MPEG-4 slice level decode
40 * and MPEG-2 motion compensation.
41 * rev 0.19 (08/06/2007 Jonathan Bian) - Removed extra type for bitplane data.
42 * rev 0.20 (08/08/2007 Jonathan Bian) - Added missing fields to VC-1 PictureParameter structure.
43 * rev 0.21 (08/20/2007 Jonathan Bian) - Added image and subpicture support.
44 * rev 0.22 (08/27/2007 Jonathan Bian) - Added support for chroma-keying and global alpha.
45 * rev 0.23 (09/11/2007 Jonathan Bian) - Fixed some issues with images and subpictures.
46 * rev 0.24 (09/18/2007 Jonathan Bian) - Added display attributes.
47 * rev 0.25 (10/18/2007 Jonathan Bian) - Changed to use IDs only for some types.
48 * rev 0.26 (11/07/2007 Waldo Bastian) - Change vaCreateBuffer semantics
49 * rev 0.27 (11/19/2007 Matt Sottek) - Added DeriveImage
50 * rev 0.28 (12/06/2007 Jonathan Bian) - Added new versions of PutImage and AssociateSubpicture
52 * rev 0.29 (02/07/2008 Jonathan Bian) - VC1 parameter fixes,
53 * added VA_STATUS_ERROR_RESOLUTION_NOT_SUPPORTED
54 * rev 0.30 (03/01/2009 Jonathan Bian) - Added encoding support for H.264 BP and MPEG-4 SP and fixes
55 * for ISO C conformance.
58 * Some concepts borrowed from XvMC and XvImage.
59 * Waldo Bastian (Intel), Matt Sottek (Intel), Austin Yuan (Intel), and Gwenole Beauchesne (SDS)
60 * contributed to various aspects of the API.
73 The VA API is intended to provide an interface between a video decode/encode/display
74 application (client) and a hardware accelerator (server), to off-load
75 video decode/encode/display operations from the host to the hardware accelerator at various
78 The basic operation steps are:
80 - Negotiate a mutually acceptable configuration with the server to lock
81 down profile, entrypoints, and other attributes that will not change on
82 a frame-by-frame basis.
83 - Create a decode context which represents a "virtualized" hardware decode
85 - Get and fill decode buffers with picture level, slice level and macroblock
86 level data (depending on entrypoints)
87 - Pass the decode buffers to the server to decode the current frame
89 Initialization & Configuration Management
91 - Find out supported profiles
92 - Find out entrypoints for a given profile
93 - Find out configuration attributes for a given profile/entrypoint pair
94 - Create a configuration for use by the decoder
98 typedef void* VADisplay; /* window system dependent */
100 typedef int VAStatus; /* Return status type from functions */
101 /* Values for the return status */
102 #define VA_STATUS_SUCCESS 0x00000000
103 #define VA_STATUS_ERROR_OPERATION_FAILED 0x00000001
104 #define VA_STATUS_ERROR_ALLOCATION_FAILED 0x00000002
105 #define VA_STATUS_ERROR_INVALID_DISPLAY 0x00000003
106 #define VA_STATUS_ERROR_INVALID_CONFIG 0x00000004
107 #define VA_STATUS_ERROR_INVALID_CONTEXT 0x00000005
108 #define VA_STATUS_ERROR_INVALID_SURFACE 0x00000006
109 #define VA_STATUS_ERROR_INVALID_BUFFER 0x00000007
110 #define VA_STATUS_ERROR_INVALID_IMAGE 0x00000008
111 #define VA_STATUS_ERROR_INVALID_SUBPICTURE 0x00000009
112 #define VA_STATUS_ERROR_ATTR_NOT_SUPPORTED 0x0000000a
113 #define VA_STATUS_ERROR_MAX_NUM_EXCEEDED 0x0000000b
114 #define VA_STATUS_ERROR_UNSUPPORTED_PROFILE 0x0000000c
115 #define VA_STATUS_ERROR_UNSUPPORTED_ENTRYPOINT 0x0000000d
116 #define VA_STATUS_ERROR_UNSUPPORTED_RT_FORMAT 0x0000000e
117 #define VA_STATUS_ERROR_UNSUPPORTED_BUFFERTYPE 0x0000000f
118 #define VA_STATUS_ERROR_SURFACE_BUSY 0x00000010
119 #define VA_STATUS_ERROR_FLAG_NOT_SUPPORTED 0x00000011
120 #define VA_STATUS_ERROR_INVALID_PARAMETER 0x00000012
121 #define VA_STATUS_ERROR_RESOLUTION_NOT_SUPPORTED 0x00000013
122 #define VA_STATUS_ERROR_UNKNOWN 0xFFFFFFFF
125 * Returns a short english description of error_status
127 const char *vaErrorStr(VAStatus error_status);
131 * A display must be obtained by calling vaGetDisplay() before calling
132 * vaInitialize() and other functions. This connects the API to the
133 * native window system.
134 * For X Windows, native_dpy would be from XOpenDisplay()
136 typedef void* NativeDisplay; /* window system dependent */
138 VADisplay vaGetDisplay (
139 NativeDisplay native_dpy /* implementation specific */
143 * Initialize the library
145 VAStatus vaInitialize (
147 int *major_version, /* out */
148 int *minor_version /* out */
152 * After this call, all library internal resources will be cleaned up
154 VAStatus vaTerminate (
159 * vaQueryVendorString returns a pointer to a zero-terminated string
160 * describing some aspects of the VA implemenation on a specific
161 * hardware accelerator. The format of the returned string is vendor
162 * specific and at the discretion of the implementer.
163 * e.g. for the Intel GMA500 implementation, an example would be:
164 * "Intel GMA500 - 2.0.0.32L.0005"
166 const char *vaQueryVendorString (
170 typedef int (*VAPrivFunc)();
173 * Return a function pointer given a function name in the library.
174 * This allows private interfaces into the library
176 VAPrivFunc vaGetLibFunc (
181 /* Currently defined profiles */
184 VAProfileMPEG2Simple = 0,
185 VAProfileMPEG2Main = 1,
186 VAProfileMPEG4Simple = 2,
187 VAProfileMPEG4AdvancedSimple = 3,
188 VAProfileMPEG4Main = 4,
189 VAProfileH264Baseline = 5,
190 VAProfileH264Main = 6,
191 VAProfileH264High = 7,
192 VAProfileVC1Simple = 8,
193 VAProfileVC1Main = 9,
194 VAProfileVC1Advanced = 10,
195 VAProfileH263Baseline = 11
199 * Currently defined entrypoints
205 VAEntrypointIDCT = 3,
206 VAEntrypointMoComp = 4,
207 VAEntrypointDeblocking = 5,
208 VAEntrypointEncSlice = 6 /* slice level encode */
211 /* Currently defined configuration attribute types */
214 VAConfigAttribRTFormat = 0,
215 VAConfigAttribSpatialResidual = 1,
216 VAConfigAttribSpatialClipping = 2,
217 VAConfigAttribIntraResidual = 3,
218 VAConfigAttribEncryption = 4,
219 VAConfigAttribRateControl = 5
220 } VAConfigAttribType;
223 * Configuration attributes
224 * If there is more than one value for an attribute, a default
225 * value will be assigned to the attribute if the client does not
226 * specify the attribute when creating a configuration
228 typedef struct _VAConfigAttrib {
229 VAConfigAttribType type;
230 unsigned int value; /* OR'd flags (bits) for this attribute */
233 /* attribute value for VAConfigAttribRTFormat */
234 #define VA_RT_FORMAT_YUV420 0x00000001
235 #define VA_RT_FORMAT_YUV422 0x00000002
236 #define VA_RT_FORMAT_YUV444 0x00000004
237 #define VA_RT_FORMAT_PROTECTED 0x80000000
239 /* attribute value for VAConfigAttribRateControl */
240 #define VA_RC_NONE 0x00000001
241 #define VA_RC_CBR 0x00000002
242 #define VA_RC_VBR 0x00000004
245 * if an attribute is not applicable for a given
246 * profile/entrypoint pair, then set the value to the following
248 #define VA_ATTRIB_NOT_SUPPORTED 0x80000000
250 /* Get maximum number of profiles supported by the implementation */
251 int vaMaxNumProfiles (
255 /* Get maximum number of entrypoints supported by the implementation */
256 int vaMaxNumEntrypoints (
260 /* Get maximum number of attributs supported by the implementation */
261 int vaMaxNumConfigAttributes (
266 * Query supported profiles
267 * The caller must provide a "profile_list" array that can hold at
268 * least vaMaxNumProfile() entries. The actual number of profiles
269 * returned in "profile_list" is returned in "num_profile".
271 VAStatus vaQueryConfigProfiles (
273 VAProfile *profile_list, /* out */
274 int *num_profiles /* out */
278 * Query supported entrypoints for a given profile
279 * The caller must provide an "entrypoint_list" array that can hold at
280 * least vaMaxNumEntrypoints() entries. The actual number of entrypoints
281 * returned in "entrypoint_list" is returned in "num_entrypoints".
283 VAStatus vaQueryConfigEntrypoints (
286 VAEntrypoint *entrypoint_list, /* out */
287 int *num_entrypoints /* out */
291 * Get attributes for a given profile/entrypoint pair
292 * The caller must provide an "attrib_list" with all attributes to be
293 * retrieved. Upon return, the attributes in "attrib_list" have been
294 * updated with their value. Unknown attributes or attributes that are
295 * not supported for the given profile/entrypoint pair will have their
296 * value set to VA_ATTRIB_NOT_SUPPORTED
298 VAStatus vaGetConfigAttributes (
301 VAEntrypoint entrypoint,
302 VAConfigAttrib *attrib_list, /* in/out */
306 /* Generic ID type, can be re-typed for specific implementation */
307 typedef unsigned int VAGenericID;
309 typedef VAGenericID VAConfigID;
312 * Create a configuration for the decode pipeline
313 * it passes in the attribute list that specifies the attributes it cares
314 * about, with the rest taking default values.
316 VAStatus vaCreateConfig (
319 VAEntrypoint entrypoint,
320 VAConfigAttrib *attrib_list,
322 VAConfigID *config_id /* out */
326 * Free resources associdated with a given config
328 VAStatus vaDestroyConfig (
334 * Query all attributes for a given configuration
335 * The profile of the configuration is returned in "profile"
336 * The entrypoint of the configuration is returned in "entrypoint"
337 * The caller must provide an "attrib_list" array that can hold at least
338 * vaMaxNumConfigAttributes() entries. The actual number of attributes
339 * returned in "attrib_list" is returned in "num_attribs"
341 VAStatus vaQueryConfigAttributes (
343 VAConfigID config_id,
344 VAProfile *profile, /* out */
345 VAEntrypoint *entrypoint, /* out */
346 VAConfigAttrib *attrib_list,/* out */
347 int *num_attribs /* out */
352 * Contexts and Surfaces
354 * Context represents a "virtual" video decode pipeline. Surfaces are render
355 * targets for a given context. The data in the surfaces are not accessible
356 * to the client and the internal data format of the surface is implementatin
359 * Surfaces will be bound to a context when the context is created. Once
360 * a surface is bound to a given context, it can not be used to create
361 * another context. The association is removed when the context is destroyed
363 * Both contexts and surfaces are identified by unique IDs and its
364 * implementation specific internals are kept opaque to the clients
367 typedef VAGenericID VAContextID;
369 typedef VAGenericID VASurfaceID;
371 #define VA_INVALID_SURFACE -1
374 * vaCreateSurfaces - Create an array of surfaces used for decode and display
376 * width: surface width
377 * height: surface height
378 * format: VA_RT_FORMAT_YUV420, VA_RT_FORMAT_YUV422 or VA_RT_FORMAT_YUV444
379 * num_surfaces: number of surfaces to be created
380 * surfaces: array of surfaces created upon return
382 VAStatus vaCreateSurfaces (
388 VASurfaceID *surfaces /* out */
392 * vaDestroySurfaces - Destroy resources associated with surfaces.
393 * Surfaces can only be destroyed after the context associated has been
396 * surfaces: array of surfaces to destroy
397 * num_surfaces: number of surfaces in the array to be destroyed.
399 VAStatus vaDestroySurfaces (
401 VASurfaceID *surfaces,
405 #define VA_PROGRESSIVE 0x1
407 * vaCreateContext - Create a context
409 * config_id: configuration for the context
410 * picture_width: coded picture width
411 * picture_height: coded picture height
412 * flag: any combination of the following:
413 * VA_PROGRESSIVE (only progressive frame pictures in the sequence when set)
414 * render_targets: render targets (surfaces) tied to the context
415 * num_render_targets: number of render targets in the above array
416 * context: created context id upon return
418 VAStatus vaCreateContext (
420 VAConfigID config_id,
424 VASurfaceID *render_targets,
425 int num_render_targets,
426 VAContextID *context /* out */
430 * vaDestroyContext - Destroy a context
432 * context: context to be destroyed
434 VAStatus vaDestroyContext (
441 * Buffers are used to pass various types of data from the
442 * client to the server. The server maintains a data store
443 * for each buffer created, and the client idenfies a buffer
444 * through a unique buffer id assigned by the server.
447 typedef VAGenericID VABufferID;
451 VAPictureParameterBufferType = 0,
452 VAIQMatrixBufferType = 1,
453 VABitPlaneBufferType = 2,
454 VASliceGroupMapBufferType = 3,
455 VASliceParameterBufferType = 4,
456 VASliceDataBufferType = 5,
457 VAMacroblockParameterBufferType = 6,
458 VAResidualDataBufferType = 7,
459 VADeblockingParameterBufferType = 8,
460 VAImageBufferType = 9,
461 VAProtectedSliceDataBufferType = 10,
462 /* Following are encode buffer types */
463 VAEncCodedBufferType = 21,
464 VAEncSequenceParameterBufferType = 22,
465 VAEncPictureParameterBufferType = 23,
466 VAEncSliceParameterBufferType = 24,
467 VAEncH264VUIBufferType = 25,
468 VAEncH264SEIBufferType = 26,
471 /****************************
472 * MPEG-2 data structures
473 ****************************/
475 /* MPEG-2 Picture Parameter Buffer */
477 * For each frame or field, and before any slice data, a single
478 * picture parameter buffer must be send.
480 typedef struct _VAPictureParameterBufferMPEG2
482 unsigned short horizontal_size;
483 unsigned short vertical_size;
484 VASurfaceID forward_reference_picture;
485 VASurfaceID backward_reference_picture;
486 /* meanings of the following fields are the same as in the standard */
487 int picture_coding_type;
488 int f_code; /* pack all four fcode into this */
491 unsigned int intra_dc_precision : 2;
492 unsigned int picture_structure : 2;
493 unsigned int top_field_first : 1;
494 unsigned int frame_pred_frame_dct : 1;
495 unsigned int concealment_motion_vectors : 1;
496 unsigned int q_scale_type : 1;
497 unsigned int intra_vlc_format : 1;
498 unsigned int alternate_scan : 1;
499 unsigned int repeat_first_field : 1;
500 unsigned int progressive_frame : 1;
501 unsigned int is_first_field : 1; /* indicate whether the current field
502 * is the first field for field picture
506 } picture_coding_extension;
507 } VAPictureParameterBufferMPEG2;
509 /* MPEG-2 Inverse Quantization Matrix Buffer */
510 typedef struct _VAIQMatrixBufferMPEG2
512 int load_intra_quantiser_matrix;
513 int load_non_intra_quantiser_matrix;
514 int load_chroma_intra_quantiser_matrix;
515 int load_chroma_non_intra_quantiser_matrix;
516 unsigned char intra_quantiser_matrix[64];
517 unsigned char non_intra_quantiser_matrix[64];
518 unsigned char chroma_intra_quantiser_matrix[64];
519 unsigned char chroma_non_intra_quantiser_matrix[64];
520 } VAIQMatrixBufferMPEG2;
523 * There will be cases where the bitstream buffer will not have enough room to hold
524 * the data for the entire slice, and the following flags will be used in the slice
525 * parameter to signal to the server for the possible cases.
526 * If a slice parameter buffer and slice data buffer pair is sent to the server with
527 * the slice data partially in the slice data buffer (BEGIN and MIDDLE cases below),
528 * then a slice parameter and data buffer needs to be sent again to complete this slice.
530 #define VA_SLICE_DATA_FLAG_ALL 0x00 /* whole slice is in the buffer */
531 #define VA_SLICE_DATA_FLAG_BEGIN 0x01 /* The beginning of the slice is in the buffer but the end if not */
532 #define VA_SLICE_DATA_FLAG_MIDDLE 0x02 /* Neither beginning nor end of the slice is in the buffer */
533 #define VA_SLICE_DATA_FLAG_END 0x04 /* end of the slice is in the buffer */
535 /* MPEG-2 Slice Parameter Buffer */
536 typedef struct _VASliceParameterBufferMPEG2
538 unsigned int slice_data_size;/* number of bytes in the slice data buffer for this slice */
539 unsigned int slice_data_offset;/* the offset to the first byte of slice data */
540 unsigned int slice_data_flag; /* see VA_SLICE_DATA_FLAG_XXX defintions */
541 unsigned int macroblock_offset;/* the offset to the first bit of MB from the first byte of slice data */
542 unsigned int slice_vertical_position;
543 int quantiser_scale_code;
544 int intra_slice_flag;
545 } VASliceParameterBufferMPEG2;
547 /* MPEG-2 Macroblock Parameter Buffer */
548 typedef struct _VAMacroblockParameterBufferMPEG2
550 unsigned short macroblock_address;
552 * macroblock_address (in raster scan order)
554 * bottom-right: picture-height-in-mb*picture-width-in-mb - 1
556 unsigned char macroblock_type; /* see definition below */
559 unsigned int frame_motion_type : 2;
560 unsigned int field_motion_type : 2;
561 unsigned int dct_type : 1;
565 unsigned char motion_vertical_field_select;
567 * motion_vertical_field_select:
568 * see section 6.3.17.2 in the spec
569 * only the lower 4 bits are used
570 * bit 0: first vector forward
571 * bit 1: first vector backward
572 * bit 2: second vector forward
573 * bit 3: second vector backward
575 short PMV[2][2][2]; /* see Table 7-7 in the spec */
576 unsigned short coded_block_pattern;
578 * The bitplanes for coded_block_pattern are described
579 * in Figure 6.10-12 in the spec
582 /* Number of skipped macroblocks after this macroblock */
583 unsigned short num_skipped_macroblocks;
584 } VAMacroblockParameterBufferMPEG2;
587 * OR'd flags for macroblock_type (section 6.3.17.1 in the spec)
589 #define VA_MB_TYPE_MOTION_FORWARD 0x02
590 #define VA_MB_TYPE_MOTION_BACKWARD 0x04
591 #define VA_MB_TYPE_MOTION_PATTERN 0x08
592 #define VA_MB_TYPE_MOTION_INTRA 0x10
595 * MPEG-2 Residual Data Buffer
596 * For each macroblock, there wil be 64 shorts (16-bit) in the
597 * residual data buffer
600 /****************************
601 * MPEG-4 Part 2 data structures
602 ****************************/
604 /* MPEG-4 Picture Parameter Buffer */
606 * For each frame or field, and before any slice data, a single
607 * picture parameter buffer must be send.
609 typedef struct _VAPictureParameterBufferMPEG4
611 unsigned short vop_width;
612 unsigned short vop_height;
613 VASurfaceID forward_reference_picture;
614 VASurfaceID backward_reference_picture;
617 unsigned int short_video_header : 1;
618 unsigned int chroma_format : 2;
619 unsigned int interlaced : 1;
620 unsigned int obmc_disable : 1;
621 unsigned int sprite_enable : 2;
622 unsigned int sprite_warping_accuracy : 2;
623 unsigned int quant_type : 1;
624 unsigned int quarter_sample : 1;
625 unsigned int data_partitioned : 1;
626 unsigned int reversible_vlc : 1;
630 unsigned char no_of_sprite_warping_points;
631 short sprite_trajectory_du[3];
632 short sprite_trajectory_dv[3];
633 unsigned char quant_precision;
636 unsigned int vop_coding_type : 2;
637 unsigned int backward_reference_vop_coding_type : 2;
638 unsigned int vop_rounding_type : 1;
639 unsigned int intra_dc_vlc_thr : 3;
640 unsigned int top_field_first : 1;
641 unsigned int alternate_vertical_scan_flag : 1;
645 unsigned char vop_fcode_forward;
646 unsigned char vop_fcode_backward;
647 /* short header related */
648 unsigned char num_gobs_in_vop;
649 unsigned char num_macroblocks_in_gob;
650 /* for direct mode prediction */
653 } VAPictureParameterBufferMPEG4;
655 /* MPEG-4 Inverse Quantization Matrix Buffer */
656 typedef struct _VAIQMatrixBufferMPEG4
658 int load_intra_quant_mat;
659 int load_non_intra_quant_mat;
660 unsigned char intra_quant_mat[64];
661 unsigned char non_intra_quant_mat[64];
662 } VAIQMatrixBufferMPEG4;
664 /* MPEG-4 Slice Parameter Buffer */
665 typedef struct _VASliceParameterBufferMPEG4
667 unsigned int slice_data_size;/* number of bytes in the slice data buffer for this slice */
668 unsigned int slice_data_offset;/* the offset to the first byte of slice data */
669 unsigned int slice_data_flag; /* see VA_SLICE_DATA_FLAG_XXX defintions */
670 unsigned int macroblock_offset;/* the offset to the first bit of MB from the first byte of slice data */
671 unsigned int macroblock_number;
673 } VASliceParameterBufferMPEG4;
679 typedef enum /* see 7.1.1.32 */
682 VAMvMode1MvHalfPel = 1,
683 VAMvMode1MvHalfPelBilinear = 2,
685 VAMvModeIntensityCompensation = 4
688 /* VC-1 Picture Parameter Buffer */
690 * For each picture, and before any slice data, a picture parameter
691 * buffer must be send. Multiple picture parameter buffers may be
692 * sent for a single picture. In that case picture parameters will
693 * apply to all slice data that follow it until a new picture
694 * parameter buffer is sent.
697 * pic_quantizer_type should be set to the applicable quantizer
698 * type as defined by QUANTIZER (J.1.19) and either
699 * PQUANTIZER (7.1.1.8) or PQINDEX (7.1.1.6)
701 typedef struct _VAPictureParameterBufferVC1
703 VASurfaceID forward_reference_picture;
704 VASurfaceID backward_reference_picture;
705 /* if out-of-loop post-processing is done on the render
706 target, then we need to keep the in-loop decoded
707 picture as a reference picture */
708 VASurfaceID inloop_decoded_picture;
710 /* sequence layer for AP or meta data for SP and MP */
713 unsigned int interlace : 1; /* SEQUENCE_LAYER::INTERLACE */
714 unsigned int syncmarker : 1;/* METADATA::SYNCMARKER */
715 unsigned int overlap : 1;/* METADATA::OVERLAP */
720 unsigned short coded_width; /* ENTRY_POINT_LAYER::CODED_WIDTH */
721 unsigned short coded_height; /* ENTRY_POINT_LAYER::CODED_HEIGHT */
722 unsigned char closed_entry; /* ENTRY_POINT_LAYER::CLOSED_ENTRY */
723 unsigned char broken_link; /* ENTRY_POINT_LAYER::BROKEN_LINK */
724 unsigned char loopfilter; /* ENTRY_POINT_LAYER::LOOPFILTER */
725 unsigned char conditional_overlap_flag; /* ENTRY_POINT_LAYER::CONDOVER */
726 unsigned char fast_uvmc_flag; /* ENTRY_POINT_LAYER::FASTUVMC */
729 unsigned int luma_flag : 1; /* ENTRY_POINT_LAYER::RANGE_MAPY_FLAG */
730 unsigned int luma : 3; /* ENTRY_POINT_LAYER::RANGE_MAPY */
731 unsigned int chroma_flag : 1; /* ENTRY_POINT_LAYER::RANGE_MAPUV_FLAG */
732 unsigned int chroma : 3; /* ENTRY_POINT_LAYER::RANGE_MAPUV */
735 } range_mapping_fields;
737 unsigned char b_picture_fraction; /* PICTURE_LAYER::BFRACTION */
738 unsigned char cbp_table; /* PICTURE_LAYER::CBPTAB/ICBPTAB */
739 unsigned char mb_mode_table; /* PICTURE_LAYER::MBMODETAB */
740 unsigned char range_reduction_frame;/* PICTURE_LAYER::RANGEREDFRM */
741 unsigned char rounding_control; /* PICTURE_LAYER::RNDCTRL */
742 unsigned char post_processing; /* PICTURE_LAYER::POSTPROC */
743 unsigned char picture_resolution_index; /* PICTURE_LAYER::RESPIC */
744 unsigned char luma_scale; /* PICTURE_LAYER::LUMSCALE */
745 unsigned char luma_shift; /* PICTURE_LAYER::LUMSHIFT */
748 unsigned int picture_type : 2; /* PICTURE_LAYER::PTYPE */
749 unsigned int frame_coding_mode : 3; /* PICTURE_LAYER::FCM */
750 unsigned int top_field_first : 1; /* PICTURE_LAYER::TFF */
751 unsigned int is_first_field : 1; /* set to 1 if it is the first field */
752 unsigned int intensity_compensation : 1; /* PICTURE_LAYER::INTCOMP */
758 unsigned int mv_type_mb : 1; /* PICTURE::MVTYPEMB */
759 unsigned int direct_mb : 1; /* PICTURE::DIRECTMB */
760 unsigned int skip_mb : 1; /* PICTURE::SKIPMB */
761 unsigned int field_tx : 1; /* PICTURE::FIELDTX */
762 unsigned int forward_mb : 1; /* PICTURE::FORWARDMB */
763 unsigned int ac_pred : 1; /* PICTURE::ACPRED */
764 unsigned int overflags : 1; /* PICTURE::OVERFLAGS */
770 unsigned int bp_mv_type_mb : 1; /* PICTURE::MVTYPEMB */
771 unsigned int bp_direct_mb : 1; /* PICTURE::DIRECTMB */
772 unsigned int bp_skip_mb : 1; /* PICTURE::SKIPMB */
773 unsigned int bp_field_tx : 1; /* PICTURE::FIELDTX */
774 unsigned int bp_forward_mb : 1; /* PICTURE::FORWARDMB */
775 unsigned int bp_ac_pred : 1; /* PICTURE::ACPRED */
776 unsigned int bp_overflags : 1; /* PICTURE::OVERFLAGS */
779 } bitplane_present; /* signal what bitplane is being passed via the bitplane buffer */
782 unsigned int reference_distance_flag : 1;/* PICTURE_LAYER::REFDIST_FLAG */
783 unsigned int reference_distance : 5;/* PICTURE_LAYER::REFDIST */
784 unsigned int num_reference_pictures: 1;/* PICTURE_LAYER::NUMREF */
785 unsigned int reference_field_pic_indicator : 1;/* PICTURE_LAYER::REFFIELD */
791 unsigned int mv_mode : 3; /* PICTURE_LAYER::MVMODE */
792 unsigned int mv_mode2 : 3; /* PICTURE_LAYER::MVMODE2 */
793 unsigned int mv_table : 3; /* PICTURE_LAYER::MVTAB/IMVTAB */
794 unsigned int two_mv_block_pattern_table: 2; /* PICTURE_LAYER::2MVBPTAB */
795 unsigned int four_mv_switch : 1; /* PICTURE_LAYER::4MVSWITCH */
796 unsigned int four_mv_block_pattern_table : 2; /* PICTURE_LAYER::4MVBPTAB */
797 unsigned int extended_mv_flag : 1; /* ENTRY_POINT_LAYER::EXTENDED_MV */
798 unsigned int extended_mv_range : 2; /* PICTURE_LAYER::MVRANGE */
799 unsigned int extended_dmv_flag : 1; /* ENTRY_POINT_LAYER::EXTENDED_DMV */
800 unsigned int extended_dmv_range : 2; /* PICTURE_LAYER::DMVRANGE */
806 unsigned int dquant : 2; /* ENTRY_POINT_LAYER::DQUANT */
807 unsigned int quantizer : 2; /* ENTRY_POINT_LAYER::QUANTIZER */
808 unsigned int half_qp : 1; /* PICTURE_LAYER::HALFQP */
809 unsigned int pic_quantizer_scale : 5;/* PICTURE_LAYER::PQUANT */
810 unsigned int pic_quantizer_type : 1;/* PICTURE_LAYER::PQUANTIZER */
811 unsigned int dq_frame : 1; /* VOPDQUANT::DQUANTFRM */
812 unsigned int dq_profile : 2; /* VOPDQUANT::DQPROFILE */
813 unsigned int dq_sb_edge : 2; /* VOPDQUANT::DQSBEDGE */
814 unsigned int dq_db_edge : 2; /* VOPDQUANT::DQDBEDGE */
815 unsigned int dq_binary_level : 1; /* VOPDQUANT::DQBILEVEL */
816 unsigned int alt_pic_quantizer : 5;/* VOPDQUANT::ALTPQUANT */
819 } pic_quantizer_fields;
822 unsigned int variable_sized_transform_flag : 1;/* ENTRY_POINT_LAYER::VSTRANSFORM */
823 unsigned int mb_level_transform_type_flag : 1;/* PICTURE_LAYER::TTMBF */
824 unsigned int frame_level_transform_type : 2;/* PICTURE_LAYER::TTFRM */
825 unsigned int transform_ac_codingset_idx1 : 2;/* PICTURE_LAYER::TRANSACFRM */
826 unsigned int transform_ac_codingset_idx2 : 2;/* PICTURE_LAYER::TRANSACFRM2 */
827 unsigned int intra_transform_dc_table : 1;/* PICTURE_LAYER::TRANSDCTAB */
831 } VAPictureParameterBufferVC1;
833 /* VC-1 Bitplane Buffer
834 There will be at most three bitplanes coded in any picture header. To send
835 the bitplane data more efficiently, each byte is divided in two nibbles, with
836 each nibble carrying three bitplanes for one macroblock. The following table
837 shows the bitplane data arrangement within each nibble based on the picture
840 Picture Type Bit3 Bit2 Bit1 Bit0
841 I or BI OVERFLAGS ACPRED FIELDTX
842 P MYTYPEMB SKIPMB DIRECTMB
843 B FORWARDMB SKIPMB DIRECTMB
845 Within each byte, the lower nibble is for the first MB and the upper nibble is
846 for the second MB. E.g. the lower nibble of the first byte in the bitplane
847 buffer is for Macroblock #1 and the upper nibble of the first byte is for
848 Macroblock #2 in the first row.
851 /* VC-1 Slice Parameter Buffer */
852 typedef struct _VASliceParameterBufferVC1
854 unsigned int slice_data_size;/* number of bytes in the slice data buffer for this slice */
855 unsigned int slice_data_offset;/* the offset to the first byte of slice data */
856 unsigned int slice_data_flag; /* see VA_SLICE_DATA_FLAG_XXX defintions */
857 unsigned int macroblock_offset;/* the offset to the first bit of MB from the first byte of slice data */
858 unsigned int slice_vertical_position;
859 } VASliceParameterBufferVC1;
861 /* VC-1 Slice Data Buffer */
863 This is simplely a buffer containing raw bit-stream bytes
866 /****************************
867 * H.264/AVC data structures
868 ****************************/
870 typedef struct _VAPictureH264
872 VASurfaceID picture_id;
874 unsigned int TopFieldOrderCnt;
875 unsigned int BottomFieldOrderCnt;
877 /* flags in VAPictureH264 could be OR of the following */
878 #define VA_PICTURE_H264_INVALID 0x00000001
879 #define VA_PICTURE_H264_TOP_FIELD 0x00000002
880 #define VA_PICTURE_H264_BOTTOM_FIELD 0x00000004
881 #define VA_PICTURE_H264_SHORT_TERM_REFERENCE 0x00000008
882 #define VA_PICTURE_H264_LONG_TERM_REFERENCE 0x00000010
884 /* H.264 Picture Parameter Buffer */
886 * For each picture, and before any slice data, a single
887 * picture parameter buffer must be send.
889 typedef struct _VAPictureParameterBufferH264
891 VAPictureH264 CurrPic;
892 VAPictureH264 ReferenceFrames[16]; /* in DPB */
893 unsigned short picture_width_in_mbs_minus1;
894 unsigned short picture_height_in_mbs_minus1;
895 unsigned char bit_depth_luma_minus8;
896 unsigned char bit_depth_chroma_minus8;
897 unsigned char num_ref_frames;
900 unsigned int chroma_format_idc : 2;
901 unsigned int residual_colour_transform_flag : 1;
902 unsigned int frame_mbs_only_flag : 1;
903 unsigned int mb_adaptive_frame_field_flag : 1;
904 unsigned int direct_8x8_inference_flag : 1;
905 unsigned int MinLumaBiPredSize8x8 : 1; /* see A.3.3.2 */
909 unsigned char num_slice_groups_minus1;
910 unsigned char slice_group_map_type;
911 signed char pic_init_qp_minus26;
912 signed char chroma_qp_index_offset;
913 signed char second_chroma_qp_index_offset;
916 unsigned int entropy_coding_mode_flag : 1;
917 unsigned int weighted_pred_flag : 1;
918 unsigned int weighted_bipred_idc : 2;
919 unsigned int transform_8x8_mode_flag : 1;
920 unsigned int field_pic_flag : 1;
921 unsigned int constrained_intra_pred_flag : 1;
925 unsigned short frame_num;
926 } VAPictureParameterBufferH264;
928 /* H.264 Inverse Quantization Matrix Buffer */
929 typedef struct _VAIQMatrixBufferH264
931 unsigned char ScalingList4x4[6][16];
932 unsigned char ScalingList8x8[2][64];
933 } VAIQMatrixBufferH264;
936 * H.264 Slice Group Map Buffer
937 * When VAPictureParameterBufferH264::num_slice_group_minus1 is not equal to 0,
938 * A slice group map buffer should be sent for each picture if required. The buffer
939 * is sent only when there is a change in the mapping values.
940 * The slice group map buffer map "map units" to slice groups as specified in
941 * section 8.2.2 of the H.264 spec. The buffer will contain one byte for each macroblock
942 * in raster scan order
945 /* H.264 Slice Parameter Buffer */
946 typedef struct _VASliceParameterBufferH264
948 unsigned int slice_data_size;/* number of bytes in the slice data buffer for this slice */
949 unsigned int slice_data_offset;/* the offset to the NAL start code for this slice */
950 unsigned int slice_data_flag; /* see VA_SLICE_DATA_FLAG_XXX defintions */
951 unsigned short slice_data_bit_offset; /* bit offset from NAL start code to the beginning of slice data */
952 unsigned short first_mb_in_slice;
953 unsigned char slice_type;
954 unsigned char direct_spatial_mv_pred_flag;
955 unsigned char num_ref_idx_l0_active_minus1;
956 unsigned char num_ref_idx_l1_active_minus1;
957 unsigned char cabac_init_idc;
959 unsigned char disable_deblocking_filter_idc;
960 char slice_alpha_c0_offset_div2;
961 char slice_beta_offset_div2;
962 VAPictureH264 RefPicList0[32]; /* See 8.2.4.2 */
963 VAPictureH264 RefPicList1[32]; /* See 8.2.4.2 */
964 unsigned char luma_log2_weight_denom;
965 unsigned char chroma_log2_weight_denom;
966 unsigned char luma_weight_l0_flag;
967 short luma_weight_l0[32];
968 short luma_offset_l0[32];
969 unsigned char chroma_weight_l0_flag;
970 short chroma_weight_l0[32][2];
971 short chroma_offset_l0[32][2];
972 unsigned char luma_weight_l1_flag;
973 short luma_weight_l1[32];
974 short luma_offset_l1[32];
975 unsigned char chroma_weight_l1_flag;
976 short chroma_weight_l1[32][2];
977 short chroma_offset_l1[32][2];
978 } VASliceParameterBufferH264;
980 /****************************
981 * Common encode data structures
982 ****************************/
985 VAEncPictureTypeIntra = 0,
986 VAEncPictureTypePredictive = 1,
987 VAEncPictureTypeBidirectional = 2,
990 /* Encode Slice Parameter Buffer */
991 typedef struct _VAEncSliceParameterBuffer
993 unsigned int start_row_number; /* starting MB row number for this slice */
994 unsigned int slice_height; /* slice height measured in MB */
997 unsigned char is_intra : 1;
998 unsigned char disable_deblocking_filter_idc : 2;
1000 unsigned char flags;
1002 } VAEncSliceParameterBuffer;
1004 /****************************
1005 * H.264 specific encode data structures
1006 ****************************/
1008 typedef struct _VAEncSequenceParameterBufferH264
1010 unsigned char seq_parameter_set_id;
1011 unsigned char level_idc;
1012 unsigned int intra_period;
1013 unsigned int picture_width_in_mbs;
1014 unsigned int picture_height_in_mbs;
1015 unsigned int bits_per_second;
1016 unsigned int frame_rate;
1017 unsigned int initial_qp;
1018 unsigned int min_qp;
1019 unsigned int basic_unit_size;
1020 unsigned char vui_flag;
1021 } VAEncSequenceParameterBufferH264;
1023 typedef struct _VAEncPictureParameterBufferH264
1025 VASurfaceID reference_picture;
1026 VASurfaceID reconstructed_picture;
1027 VABufferID coded_buf;
1028 unsigned short picture_width;
1029 unsigned short picture_height;
1030 unsigned char last_picture; /* if set to 1 it indicates the last picture in the sequence */
1031 } VAEncPictureParameterBufferH264;
1033 /****************************
1034 * H.263 specific encode data structures
1035 ****************************/
1037 typedef struct _VAEncSequenceParameterBufferH263
1039 unsigned int bits_per_second;
1040 unsigned int frame_rate;
1041 unsigned int initial_qp;
1042 unsigned int min_qp;
1043 } VAEncSequenceParameterBufferH263;
1045 typedef struct _VAEncPictureParameterBufferH263
1047 VASurfaceID reference_picture;
1048 VASurfaceID reconstructed_picture;
1049 VABufferID coded_buf;
1050 unsigned short picture_width;
1051 unsigned short picture_height;
1052 VAEncPictureType picture_type;
1053 } VAEncPictureParameterBufferH263;
1055 /****************************
1056 * MPEG-4 specific encode data structures
1057 ****************************/
1059 typedef struct _VAEncSequenceParameterBufferMPEG4
1061 unsigned char profile_and_level_indication;
1062 unsigned int intra_period;
1063 unsigned int video_object_layer_width;
1064 unsigned int video_object_layer_height;
1065 unsigned int vop_time_increment_resolution;
1066 unsigned int fixed_vop_rate;
1067 unsigned int fixed_vop_time_increment;
1068 unsigned int bits_per_second;
1069 unsigned int frame_rate;
1070 unsigned int initial_qp;
1071 unsigned int min_qp;
1072 } VAEncSequenceParameterBufferMPEG4;
1074 typedef struct _VAEncPictureParameterBufferMPEG4
1076 VASurfaceID reference_picture;
1077 VASurfaceID reconstructed_picture;
1078 VABufferID coded_buf;
1079 unsigned short picture_width;
1080 unsigned short picture_height;
1081 unsigned int modulo_time_base; /* number of 1s */
1082 unsigned int vop_time_increment;
1083 VAEncPictureType picture_type;
1084 } VAEncPictureParameterBufferMPEG4;
1086 /* Buffer functions */
1089 * Creates a buffer for "num_elements" elements of "size" bytes and
1090 * initalize with "data".
1091 * if "data" is null, then the contents of the buffer data store
1093 * Basically there are two ways to get buffer data to the server side. One is
1094 * to call vaCreateBuffer() with a non-null "data", which results the data being
1095 * copied to the data store on the server side. A different method that
1096 * eliminates this copy is to pass null as "data" when calling vaCreateBuffer(),
1097 * and then use vaMapBuffer() to map the data store from the server side to the
1098 * client address space for access.
1099 * Note: image buffers are created by the library, not the client. Please see
1100 * vaCreateImage on how image buffers are managed.
1102 VAStatus vaCreateBuffer (
1104 VAContextID context,
1105 VABufferType type, /* in */
1106 unsigned int size, /* in */
1107 unsigned int num_elements, /* in */
1108 void *data, /* in */
1109 VABufferID *buf_id /* out */
1113 * Convey to the server how many valid elements are in the buffer.
1114 * e.g. if multiple slice parameters are being held in a single buffer,
1115 * this will communicate to the server the number of slice parameters
1116 * that are valid in the buffer.
1118 VAStatus vaBufferSetNumElements (
1120 VABufferID buf_id, /* in */
1121 unsigned int num_elements /* in */
1125 * Map data store of the buffer into the client's address space
1126 * vaCreateBuffer() needs to be called with "data" set to NULL before
1127 * calling vaMapBuffer()
1129 VAStatus vaMapBuffer (
1131 VABufferID buf_id, /* in */
1132 void **pbuf /* out */
1136 * After client making changes to a mapped data store, it needs to
1137 * "Unmap" it to let the server know that the data is ready to be
1138 * consumed by the server
1140 VAStatus vaUnmapBuffer (
1142 VABufferID buf_id /* in */
1146 * After this call, the buffer is deleted and this buffer_id is no longer valid
1147 * Only call this if the buffer is not going to be passed to vaRenderBuffer
1149 VAStatus vaDestroyBuffer (
1151 VABufferID buffer_id
1155 Render (Decode) Pictures
1157 A picture represents either a frame or a field.
1159 The Begin/Render/End sequence sends the decode buffers to the server
1163 * Get ready to decode a picture to a target surface
1165 VAStatus vaBeginPicture (
1167 VAContextID context,
1168 VASurfaceID render_target
1172 * Send decode buffers to the server.
1173 * Buffers are automatically destroyed afterwards
1175 VAStatus vaRenderPicture (
1177 VAContextID context,
1178 VABufferID *buffers,
1183 * Make the end of rendering for a picture.
1184 * The server should start processing all pending operations for this
1185 * surface. This call is non-blocking. The client can start another
1186 * Begin/Render/End sequence on a different render target.
1188 VAStatus vaEndPicture (
1200 * This function blocks until all pending operations on the render target
1201 * have been completed. Upon return it is safe to use the render target for a
1202 * different picture.
1204 VAStatus vaSyncSurface (
1206 VAContextID context,
1207 VASurfaceID render_target
1212 VASurfaceRendering = 0, /* Rendering in progress */
1213 VASurfaceDisplaying = 1, /* Displaying in progress (not safe to render into it) */
1214 /* this status is useful if surface is used as the source */
1216 VASurfaceReady = 2, /* not being rendered or displayed */
1217 VASurfaceSkipped = 3 /* Indicate a skipped frame during encode */
1221 * Find out any pending ops on the render target
1223 VAStatus vaQuerySurfaceStatus (
1225 VASurfaceID render_target,
1226 VASurfaceStatus *status /* out */
1230 * Images and Subpictures
1231 * VAImage is used to either get the surface data to client memory, or
1232 * to copy image data in client memory to a surface.
1233 * Both images, subpictures and surfaces follow the same 2D coordinate system where origin
1234 * is at the upper left corner with positive X to the right and positive Y down
1236 #define VA_MAKEFOURCC(ch0, ch1, ch2, ch3) \
1237 ((unsigned long)(unsigned char) (ch0) | ((unsigned long)(unsigned char) (ch1) << 8) | \
1238 ((unsigned long)(unsigned char) (ch2) << 16) | ((unsigned long)(unsigned char) (ch3) << 24 ))
1240 /* a few common FourCCs */
1241 #define VA_FOURCC_NV12 0x3231564E
1242 #define VA_FOURCC_AI44 0x34344149
1243 #define VA_FOURCC_RGBA 0x41424752
1244 #define VA_FOURCC_UYVY 0x59565955
1245 #define VA_FOURCC_YUY2 0x32595559
1246 #define VA_FOURCC_AYUV 0x56555941
1247 #define VA_FOURCC_NV11 0x3131564e
1248 #define VA_FOURCC_YV12 0x32315659
1249 #define VA_FOURCC_P208 0x38303250
1250 #define VA_FOURCC_IYUV 0x56555949
1253 #define VA_LSB_FIRST 1
1254 #define VA_MSB_FIRST 2
1256 typedef struct _VAImageFormat
1258 unsigned int fourcc;
1259 unsigned int byte_order; /* VA_LSB_FIRST, VA_MSB_FIRST */
1260 unsigned int bits_per_pixel;
1261 /* for RGB formats */
1262 unsigned int depth; /* significant bits per pixel */
1263 unsigned int red_mask;
1264 unsigned int green_mask;
1265 unsigned int blue_mask;
1266 unsigned int alpha_mask;
1269 typedef VAGenericID VAImageID;
1271 typedef struct _VAImage
1273 VAImageID image_id; /* uniquely identify this image */
1274 VAImageFormat format;
1275 VABufferID buf; /* image data buffer */
1277 * Image data will be stored in a buffer of type VAImageBufferType to facilitate
1278 * data store on the server side for optimal performance. The buffer will be
1279 * created by the CreateImage function, and proper storage allocated based on the image
1280 * size and format. This buffer is managed by the library implementation, and
1281 * accessed by the client through the buffer Map/Unmap functions.
1283 unsigned short width;
1284 unsigned short height;
1285 unsigned int data_size;
1286 unsigned int num_planes; /* can not be greater than 3 */
1288 * An array indicating the scanline pitch in bytes for each plane.
1289 * Each plane may have a different pitch. Maximum 3 planes for planar formats
1291 unsigned int pitches[3];
1293 * An array indicating the byte offset from the beginning of the image data
1294 * to the start of each plane.
1296 unsigned int offsets[3];
1298 /* The following fields are only needed for paletted formats */
1299 int num_palette_entries; /* set to zero for non-palette images */
1301 * Each component is one byte and entry_bytes indicates the number of components in
1302 * each entry (eg. 3 for YUV palette entries). set to zero for non-palette images
1306 * An array of ascii characters describing the order of the components within the bytes.
1307 * Only entry_bytes characters of the string are used.
1309 char component_order[4];
1312 /* Get maximum number of image formats supported by the implementation */
1313 int vaMaxNumImageFormats (
1318 * Query supported image formats
1319 * The caller must provide a "format_list" array that can hold at
1320 * least vaMaxNumImageFormats() entries. The actual number of formats
1321 * returned in "format_list" is returned in "num_formats".
1323 VAStatus vaQueryImageFormats (
1325 VAImageFormat *format_list, /* out */
1326 int *num_formats /* out */
1330 * Create a VAImage structure
1331 * The width and height fields returned in the VAImage structure may get
1332 * enlarged for some YUV formats. Upon return from this function,
1333 * image->buf has been created and proper storage allocated by the library.
1334 * The client can access the image through the Map/Unmap calls.
1336 VAStatus vaCreateImage (
1338 VAImageFormat *format,
1341 VAImage *image /* out */
1345 * Should call DestroyImage before destroying the surface it is bound to
1347 VAStatus vaDestroyImage (
1352 VAStatus vaSetImagePalette (
1356 * pointer to an array holding the palette data. The size of the array is
1357 * num_palette_entries * entry_bytes in size. The order of the components
1358 * in the palette is described by the component_order in VAImage struct
1360 unsigned char *palette
1364 * Retrive surface data into a VAImage
1365 * Image must be in a format supported by the implementation
1367 VAStatus vaGetImage (
1369 VASurfaceID surface,
1370 int x, /* coordinates of the upper left source pixel */
1372 unsigned int width, /* width and height of the region */
1373 unsigned int height,
1378 * Copy data from a VAImage to a surface
1379 * Image must be in a format supported by the implementation
1380 * Returns a VA_STATUS_ERROR_SURFACE_BUSY if the surface
1381 * shouldn't be rendered into when this is called
1382 * The source and destionation width and height are the same and
1383 * no scaling is performed with this operation.
1385 VAStatus vaPutImage (
1387 VASurfaceID surface,
1392 unsigned int height,
1398 * Similar to vaPutImage but with additional destination width
1399 * and height arguments to enable scaling
1401 VAStatus vaPutImage2 (
1403 VASurfaceID surface,
1407 unsigned int src_width,
1408 unsigned int src_height,
1411 unsigned int dest_width,
1412 unsigned int dest_height
1416 * Derive an VAImage from an existing surface.
1417 * This interface will derive a VAImage and corresponding image buffer from
1418 * an existing VA Surface. The image buffer can then be mapped/unmapped for
1419 * direct CPU access. This operation is only possible on implementations with
1420 * direct rendering capabilities and internal surface formats that can be
1421 * represented with a VAImage. When the operation is not possible this interface
1422 * will return VA_STATUS_ERROR_OPERATION_FAILED. Clients should then fall back
1423 * to using vaCreateImage + vaPutImage to accomplish the same task in an
1426 * Implementations should only return success when the resulting image buffer
1427 * would be useable with vaMap/Unmap.
1429 * When directly accessing a surface special care must be taken to insure
1430 * proper synchronization with the graphics hardware. Clients should call
1431 * vaQuerySurfaceStatus to insure that a surface is not the target of concurrent
1432 * rendering or currently being displayed by an overlay.
1434 * Additionally nothing about the contents of a surface should be assumed
1435 * following a vaPutSurface. Implementations are free to modify the surface for
1436 * scaling or subpicture blending within a call to vaPutImage.
1438 * Calls to vaPutImage or vaGetImage using the same surface from which the image
1439 * has been derived will return VA_STATUS_ERROR_SURFACE_BUSY. vaPutImage or
1440 * vaGetImage with other surfaces is supported.
1442 * An image created with vaDeriveImage should be freed with vaDestroyImage. The
1443 * image and image buffer structures will be destroyed; however, the underlying
1444 * surface will remain unchanged until freed with vaDestroySurfaces.
1446 VAStatus vaDeriveImage (
1448 VASurfaceID surface,
1449 VAImage *image /* out */
1454 * Subpicture is a special type of image that can be blended
1455 * with a surface during vaPutSurface(). Subpicture can be used to render
1456 * DVD sub-titles or closed captioning text etc.
1459 typedef VAGenericID VASubpictureID;
1461 /* Get maximum number of subpicture formats supported by the implementation */
1462 int vaMaxNumSubpictureFormats (
1466 /* flags for subpictures */
1467 #define VA_SUBPICTURE_CHROMA_KEYING 0x0001
1468 #define VA_SUBPICTURE_GLOBAL_ALPHA 0x0002
1470 * Query supported subpicture formats
1471 * The caller must provide a "format_list" array that can hold at
1472 * least vaMaxNumSubpictureFormats() entries. The flags arrary holds the flag
1473 * for each format to indicate additional capabilities for that format. The actual
1474 * number of formats returned in "format_list" is returned in "num_formats".
1475 * flags: returned value to indicate addtional capabilities
1476 * VA_SUBPICTURE_CHROMA_KEYING - supports chroma-keying
1477 * VA_SUBPICTURE_GLOBAL_ALPHA - supports global alpha
1479 VAStatus vaQuerySubpictureFormats (
1481 VAImageFormat *format_list, /* out */
1482 unsigned int *flags, /* out */
1483 unsigned int *num_formats /* out */
1487 * Subpictures are created with an image associated.
1489 VAStatus vaCreateSubpicture (
1492 VASubpictureID *subpicture /* out */
1496 * Destroy the subpicture before destroying the image it is assocated to
1498 VAStatus vaDestroySubpicture (
1500 VASubpictureID subpicture
1504 * Bind an image to the subpicture. This image will now be associated with
1505 * the subpicture instead of the one at creation.
1507 VAStatus vaSetSubpictureImage (
1509 VASubpictureID subpicture,
1514 * If chromakey is enabled, then the area where the source value falls within
1515 * the chromakey [min, max] range is transparent
1516 * The chromakey component format is the following:
1517 * For RGB: [0:7] Red [8:15] Blue [16:23] Green
1518 * For YUV: [0:7] V [8:15] U [16:23] Y
1519 * The chromakey mask can be used to mask out certain components for chromakey
1522 VAStatus vaSetSubpictureChromakey (
1524 VASubpictureID subpicture,
1525 unsigned int chromakey_min,
1526 unsigned int chromakey_max,
1527 unsigned int chromakey_mask
1531 * Global alpha value is between 0 and 1. A value of 1 means fully opaque and
1532 * a value of 0 means fully transparent. If per-pixel alpha is also specified then
1533 * the overall alpha is per-pixel alpha multiplied by the global alpha
1535 VAStatus vaSetSubpictureGlobalAlpha (
1537 VASubpictureID subpicture,
1542 * vaAssociateSubpicture associates the subpicture with target_surfaces.
1543 * It defines the region mapping between the subpicture and the target
1544 * surfaces through source and destination rectangles (with the same width and height).
1545 * Both will be displayed at the next call to vaPutSurface. Additional
1546 * associations before the call to vaPutSurface simply overrides the association.
1548 VAStatus vaAssociateSubpicture (
1550 VASubpictureID subpicture,
1551 VASurfaceID *target_surfaces,
1553 short src_x, /* upper left offset in subpicture */
1555 short dest_x, /* upper left offset in surface */
1557 unsigned short width,
1558 unsigned short height,
1560 * whether to enable chroma-keying or global-alpha
1561 * see VA_SUBPICTURE_XXX values
1567 * Similar to vaAssociateSubpicture but with additional destination width
1568 * and height to enable scaling
1570 VAStatus vaAssociateSubpicture2 (
1572 VASubpictureID subpicture,
1573 VASurfaceID *target_surfaces,
1575 short src_x, /* upper left offset in subpicture */
1577 unsigned short src_width,
1578 unsigned short src_height,
1579 short dest_x, /* upper left offset in surface */
1581 unsigned short dest_width,
1582 unsigned short dest_height,
1584 * whether to enable chroma-keying or global-alpha
1585 * see VA_SUBPICTURE_XXX values
1591 * vaDeassociateSubpicture removes the association of the subpicture with target_surfaces.
1593 VAStatus vaDeassociateSubpicture (
1595 VASubpictureID subpicture,
1596 VASurfaceID *target_surfaces,
1600 typedef struct _VARectangle
1604 unsigned short width;
1605 unsigned short height;
1609 * Display attributes
1610 * Display attributes are used to control things such as contrast, hue, saturation,
1611 * brightness etc. in the rendering process. The application can query what
1612 * attributes are supported by the driver, and then set the appropriate attributes
1613 * before calling vaPutSurface()
1616 /* Currently defined display attribute types */
1619 VADisplayAttribBrightness = 0,
1620 VADisplayAttribContrast = 1,
1621 VADisplayAttribHue = 2,
1622 VADisplayAttribSaturation = 3,
1623 /* client can specifiy a background color for the target window */
1624 VADisplayAttribBackgroundColor = 4,
1626 * this is a gettable only attribute. For some implementations that use the
1627 * hardware overlay, after PutSurface is called, the surface can not be
1628 * re-used until after the subsequent PutSurface call. If this is the case
1629 * then the value for this attribute will be set to 1 so that the client
1630 * will not attempt to re-use the surface right after returning from a call
1633 VADisplayAttribDirectSurface = 5,
1634 } VADisplayAttribType;
1636 /* flags for VADisplayAttribute */
1637 #define VA_DISPLAY_ATTRIB_NOT_SUPPORTED 0x0000
1638 #define VA_DISPLAY_ATTRIB_GETTABLE 0x0001
1639 #define VA_DISPLAY_ATTRIB_SETTABLE 0x0002
1641 typedef struct _VADisplayAttribute
1643 VADisplayAttribType type;
1646 int value; /* used by the set/get attribute functions */
1647 /* flags can be VA_DISPLAY_ATTRIB_GETTABLE or VA_DISPLAY_ATTRIB_SETTABLE or OR'd together */
1649 } VADisplayAttribute;
1651 /* Get maximum number of display attributs supported by the implementation */
1652 int vaMaxNumDisplayAttributes (
1657 * Query display attributes
1658 * The caller must provide a "attr_list" array that can hold at
1659 * least vaMaxNumDisplayAttributes() entries. The actual number of attributes
1660 * returned in "attr_list" is returned in "num_attributes".
1662 VAStatus vaQueryDisplayAttributes (
1664 VADisplayAttribute *attr_list, /* out */
1665 int *num_attributes /* out */
1669 * Get display attributes
1670 * This function returns the current attribute values in "attr_list".
1671 * Only attributes returned with VA_DISPLAY_ATTRIB_GETTABLE set in the "flags" field
1672 * from vaQueryDisplayAttributes() can have their values retrieved.
1674 VAStatus vaGetDisplayAttributes (
1676 VADisplayAttribute *attr_list, /* in/out */
1681 * Set display attributes
1682 * Only attributes returned with VA_DISPLAY_ATTRIB_SETTABLE set in the "flags" field
1683 * from vaQueryDisplayAttributes() can be set. If the attribute is not settable or
1684 * the value is out of range, the function returns VA_STATUS_ERROR_ATTR_NOT_SUPPORTED
1686 VAStatus vaSetDisplayAttributes (
1688 VADisplayAttribute *attr_list,