Using the same shader to configure gen7 avc quality level, it is benefit to make code clear and reduce profile limitation.
Signed-off-by: Zhong Li <[email protected]> --- src/gen6_mfc.c | 130 +++++++++-------------------------- src/gen7_vme.c | 73 +++----------------- src/shaders/vme/inter_frame_ivb.asm | 22 +++++- src/shaders/vme/inter_frame_ivb.g7b | 16 ++++- src/shaders/vme/vme7.inc | 8 ++- 5 files changed, 80 insertions(+), 169 deletions(-) diff --git a/src/gen6_mfc.c b/src/gen6_mfc.c index 30cdb66..0a10054 100644 --- a/src/gen6_mfc.c +++ b/src/gen6_mfc.c @@ -676,6 +676,8 @@ gen6_mfc_stop(VADriverContextP ctx, return VA_STATUS_SUCCESS; } +#if __SOFTWARE__ + static int gen6_mfc_avc_pak_object_intra(VADriverContextP ctx, int x, int y, int end_mb, int qp,unsigned int *msg, struct intel_encoder_context *encoder_context, @@ -766,58 +768,6 @@ gen6_mfc_avc_pak_object_inter(VADriverContextP ctx, int x, int y, int end_mb, in return len_in_dwords; } - -static int -gen6_mfc_avc_pak_object_inter2(VADriverContextP ctx, int x, int y, int end_mb, int qp, - unsigned int offset, - struct intel_encoder_context *encoder_context, - struct intel_batchbuffer *batch) -{ - struct gen6_vme_context *vme_context = encoder_context->vme_context; - int len_in_dwords = 11; - - if (batch == NULL) - batch = encoder_context->base.batch; - - BEGIN_BCS_BATCH(batch, len_in_dwords); - - OUT_BCS_BATCH(batch, MFC_AVC_PAK_OBJECT | (len_in_dwords - 2)); - - OUT_BCS_BATCH(batch, 32); /* 32 MV*/ - OUT_BCS_BATCH(batch, offset); - - OUT_BCS_BATCH(batch, - (1 << 24) | /* PackedMvNum, Debug*/ - (4 << 20) | /* 8 MV, SNB don't use it*/ - (1 << 19) | /* CbpDcY */ - (1 << 18) | /* CbpDcU */ - (1 << 17) | /* CbpDcV */ - (0 << 15) | /* Transform8x8Flag = 0*/ - (0 << 14) | /* Frame based*/ - (0 << 13) | /* Inter MB */ - (1 << 8) | /* MbType = P_L0_16x16 */ - (0 << 7) | /* MBZ for frame */ - (0 << 6) | /* MBZ */ - (2 << 4) | /* MBZ for inter*/ - (0 << 3) | /* MBZ */ - (0 << 2) | /* SkipMbFlag */ - (0 << 0)); /* InterMbMode */ - - OUT_BCS_BATCH(batch, (0xFFFF<<16) | (y << 8) | x); /* Code Block Pattern for Y*/ - OUT_BCS_BATCH(batch, 0x000F000F); /* Code Block Pattern */ - OUT_BCS_BATCH(batch, (0 << 27) | (end_mb << 26) | qp); /* Last MB */ - - /*Stuff for Inter MB*/ - OUT_BCS_BATCH(batch, 0x0); - OUT_BCS_BATCH(batch, 0x0); - OUT_BCS_BATCH(batch, 0x0); - - OUT_BCS_BATCH(batch, 0xF0020000); /*MaxSizeInWord and TargetSzieInWord*/ - - ADVANCE_BCS_BATCH(batch); - - return len_in_dwords; -} static void gen6_mfc_avc_pipeline_slice_programing(VADriverContextP ctx, @@ -841,7 +791,6 @@ gen6_mfc_avc_pipeline_slice_programing(VADriverContextP ctx, unsigned int tail_data[] = { 0x0, 0x0 }; int slice_type = intel_avc_enc_slice_type_fixup(pSliceParameter->slice_type); int is_intra = slice_type == SLICE_TYPE_I; - int is_low_quality = (encoder_context->quality_level == ENCODER_LOW_QUALITY); if (rate_control_mode == VA_RC_CBR) { qp = mfc_context->bit_rate_control_context[slice_type].QpPrimeY; @@ -869,54 +818,36 @@ gen6_mfc_avc_pipeline_slice_programing(VADriverContextP ctx, dri_bo_map(vme_context->vme_output.bo , 1); msg = (unsigned int *)vme_context->vme_output.bo->virtual; - if (is_low_quality) { - for (i = pSliceParameter->macroblock_address; - i < pSliceParameter->macroblock_address + pSliceParameter->num_macroblocks; i++) { - int last_mb = (i == (pSliceParameter->macroblock_address + pSliceParameter->num_macroblocks - 1) ); - x = i % width_in_mbs; - y = i / width_in_mbs; - - if (is_intra) { - assert(msg); - gen6_mfc_avc_pak_object_intra(ctx, x, y, last_mb, qp, msg, encoder_context, 0, 0, slice_batch); - msg += 4; - } else { - gen6_mfc_avc_pak_object_inter2(ctx, x, y, last_mb, qp, offset, encoder_context, slice_batch); - offset += 64; - } - } + if (is_intra) { + msg += pSliceParameter->macroblock_address * INTRA_VME_OUTPUT_IN_DWS; } else { + msg += pSliceParameter->macroblock_address * INTER_VME_OUTPUT_IN_DWS; + msg += 32; /* the first 32 DWs are MVs */ + offset = pSliceParameter->macroblock_address * INTER_VME_OUTPUT_IN_BYTES; + } + + for (i = pSliceParameter->macroblock_address; + i < pSliceParameter->macroblock_address + pSliceParameter->num_macroblocks; i++) { + int last_mb = (i == (pSliceParameter->macroblock_address + pSliceParameter->num_macroblocks - 1) ); + x = i % width_in_mbs; + y = i / width_in_mbs; + if (is_intra) { - msg += pSliceParameter->macroblock_address * INTRA_VME_OUTPUT_IN_DWS; + assert(msg); + gen6_mfc_avc_pak_object_intra(ctx, x, y, last_mb, qp, msg, encoder_context, 0, 0, slice_batch); + msg += INTRA_VME_OUTPUT_IN_DWS; } else { - msg += pSliceParameter->macroblock_address * INTER_VME_OUTPUT_IN_DWS; - msg += 32; /* the first 32 DWs are MVs */ - offset = pSliceParameter->macroblock_address * INTER_VME_OUTPUT_IN_BYTES; - } - - for (i = pSliceParameter->macroblock_address; - i < pSliceParameter->macroblock_address + pSliceParameter->num_macroblocks; i++) { - int last_mb = (i == (pSliceParameter->macroblock_address + pSliceParameter->num_macroblocks - 1) ); - x = i % width_in_mbs; - y = i / width_in_mbs; - - if (is_intra) { - assert(msg); + if (msg[0] & INTRA_MB_FLAG_MASK) { gen6_mfc_avc_pak_object_intra(ctx, x, y, last_mb, qp, msg, encoder_context, 0, 0, slice_batch); - msg += INTRA_VME_OUTPUT_IN_DWS; } else { - if (msg[0] & INTRA_MB_FLAG_MASK) { - gen6_mfc_avc_pak_object_intra(ctx, x, y, last_mb, qp, msg, encoder_context, 0, 0, slice_batch); - } else { - gen6_mfc_avc_pak_object_inter(ctx, x, y, last_mb, qp, msg, offset, encoder_context, 0, 0, slice_type, slice_batch); - } - - msg += INTER_VME_OUTPUT_IN_DWS; - offset += INTER_VME_OUTPUT_IN_BYTES; + gen6_mfc_avc_pak_object_inter(ctx, x, y, last_mb, qp, msg, offset, encoder_context, 0, 0, slice_type, slice_batch); } + + msg += INTER_VME_OUTPUT_IN_DWS; + offset += INTER_VME_OUTPUT_IN_BYTES; } } - + dri_bo_unmap(vme_context->vme_output.bo); if ( last_slice ) { @@ -965,6 +896,8 @@ gen6_mfc_avc_software_batchbuffer(VADriverContextP ctx, return batch_bo; } +#else + static void gen6_mfc_batchbuffer_surfaces_input(VADriverContextP ctx, struct encode_state *encode_state, @@ -1358,6 +1291,9 @@ gen6_mfc_avc_hardware_batchbuffer(VADriverContextP ctx, return mfc_context->mfc_batchbuffer_surface.bo; } +#endif + + static void gen6_mfc_avc_pipeline_programing(VADriverContextP ctx, struct encode_state *encode_state, @@ -1372,15 +1308,11 @@ gen6_mfc_avc_pipeline_programing(VADriverContextP ctx, return; } - if (encoder_context->quality_level == ENCODER_LOW_QUALITY ) - slice_batch_bo = gen6_mfc_avc_software_batchbuffer(ctx, encode_state, encoder_context); - else { #if __SOFTWARE__ - slice_batch_bo = gen6_mfc_avc_software_batchbuffer(ctx, encode_state, encoder_context); + slice_batch_bo = gen6_mfc_avc_software_batchbuffer(ctx, encode_state, encoder_context); #else - slice_batch_bo = gen6_mfc_avc_hardware_batchbuffer(ctx, encode_state, encoder_context); + slice_batch_bo = gen6_mfc_avc_hardware_batchbuffer(ctx, encode_state, encoder_context); #endif - } // begin programing intel_batchbuffer_start_atomic_bcs(batch, 0x4000); diff --git a/src/gen7_vme.c b/src/gen7_vme.c index 135a5ad..dc15445 100644 --- a/src/gen7_vme.c +++ b/src/gen7_vme.c @@ -63,8 +63,6 @@ enum VIDEO_CODING_TYPE{ enum AVC_VME_KERNEL_TYPE{ AVC_VME_INTRA_SHADER = 0, AVC_VME_INTER_SHADER, - AVC_VME_OLD_INTRA_SHADER, - AVC_VME_OLD_INTER_SHADER, AVC_VME_BATCHBUFFER, AVC_VME_BINTER_SHADER, AVC_VME_KERNEL_SUM @@ -85,14 +83,6 @@ static const uint32_t gen7_vme_inter_frame[][4] = { #include "shaders/vme/inter_frame_ivb.g7b" }; -static const uint32_t gen7_vme_old_intra_frame[][4] = { -#include "shaders/vme_old/intra_frame.g7b" -}; - -static const uint32_t gen7_vme_old_inter_frame[][4] = { -#include "shaders/vme_old/inter_frame.g7b" -}; - static const uint32_t gen7_vme_batchbuffer[][4] = { #include "shaders/vme/batchbuffer.g7b" }; @@ -117,20 +107,6 @@ static struct i965_kernel gen7_vme_kernels[] = { NULL }, { - "AVC VME Old Intra Frame", - AVC_VME_OLD_INTRA_SHADER, - gen7_vme_old_intra_frame, - sizeof(gen7_vme_old_intra_frame), - NULL - }, - { - "AVC VME Old Inter Frame", - AVC_VME_OLD_INTER_SHADER, - gen7_vme_old_inter_frame, - sizeof(gen7_vme_old_inter_frame), - NULL - }, - { "AVC VME BATCHBUFFER", AVC_VME_BATCHBUFFER, gen7_vme_batchbuffer, @@ -383,36 +359,6 @@ static VAStatus gen7_vme_constant_setup(VADriverContextP ctx, return VA_STATUS_SUCCESS; } -static VAStatus -gen7_vme_vme_state_setup(VADriverContextP ctx, - struct encode_state *encode_state, - int is_intra, - struct intel_encoder_context *encoder_context) -{ - struct gen6_vme_context *vme_context = encoder_context->vme_context; - unsigned int *vme_state_message; - int i; - - //building VME state message - dri_bo_map(vme_context->vme_state.bo, 1); - assert(vme_context->vme_state.bo->virtual); - vme_state_message = (unsigned int *)vme_context->vme_state.bo->virtual; - - vme_state_message[0] = 0x10010101; - vme_state_message[1] = 0x100F0F0F; - vme_state_message[2] = 0x10010101; - vme_state_message[3] = 0x000F0F0F; - for(i = 4; i < 14; i++) { - vme_state_message[i] = 0x00000000; - } - - for(i = 14; i < 32; i++) { - vme_state_message[i] = 0x00000000; - } - - dri_bo_unmap( vme_context->vme_state.bo); - return VA_STATUS_SUCCESS; -} static VAStatus gen7_vme_avc_state_setup(VADriverContextP ctx, struct encode_state *encode_state, @@ -424,6 +370,7 @@ static VAStatus gen7_vme_avc_state_setup(VADriverContextP ctx, unsigned int *mb_cost_table; int i; VAEncSliceParameterBufferH264 *slice_param = (VAEncSliceParameterBufferH264 *)encode_state->slice_params_ext[0]->buffer; + unsigned int is_low_quality = (encoder_context->quality_level == ENCODER_LOW_QUALITY); mb_cost_table = (unsigned int *)vme_context->vme_state_message; //building VME state message @@ -431,8 +378,9 @@ static VAStatus gen7_vme_avc_state_setup(VADriverContextP ctx, assert(vme_context->vme_state.bo->virtual); vme_state_message = (unsigned int *)vme_context->vme_state.bo->virtual; - if ((slice_param->slice_type == SLICE_TYPE_P) || - (slice_param->slice_type == SLICE_TYPE_SP)) { + if (((slice_param->slice_type == SLICE_TYPE_P) || + (slice_param->slice_type == SLICE_TYPE_SP) && + !is_low_quality)) { vme_state_message[0] = 0x01010101; vme_state_message[1] = 0x10010101; vme_state_message[2] = 0x0F0F0F0F; @@ -598,7 +546,7 @@ gen7_vme_fill_vme_batchbuffer(VADriverContextP ctx, /*inline data */ *command_ptr++ = (mb_width << 16 | mb_y << 8 | mb_x); - *command_ptr++ = ( (1 << 16) | transform_8x8_mode_flag | (mb_intra_ub << 8)); + *command_ptr++ = ((encoder_context->quality_level << 24) | (1 << 16) | transform_8x8_mode_flag | (mb_intra_ub << 8)); i += 1; } @@ -668,14 +616,14 @@ static void gen7_vme_pipeline_programing(VADriverContextP ctx, if ((pSliceParameter->slice_type == SLICE_TYPE_I) || (pSliceParameter->slice_type == SLICE_TYPE_I)) { - kernel_shader = (is_low_quality ? AVC_VME_OLD_INTRA_SHADER : AVC_VME_INTRA_SHADER); + kernel_shader = AVC_VME_INTRA_SHADER; } else if ((pSliceParameter->slice_type == SLICE_TYPE_P) || (pSliceParameter->slice_type == SLICE_TYPE_SP)) { - kernel_shader = (is_low_quality ? AVC_VME_OLD_INTER_SHADER : AVC_VME_INTER_SHADER); + kernel_shader = AVC_VME_INTER_SHADER; } else { kernel_shader = AVC_VME_BINTER_SHADER; if (!allow_hwscore) - kernel_shader = (is_low_quality ? AVC_VME_OLD_INTER_SHADER : AVC_VME_INTER_SHADER); + kernel_shader = AVC_VME_INTER_SHADER; } if (allow_hwscore) @@ -727,10 +675,7 @@ static VAStatus gen7_vme_prepare(VADriverContextP ctx, gen7_vme_surface_setup(ctx, encode_state, is_intra, encoder_context); gen7_vme_interface_setup(ctx, encode_state, encoder_context); gen7_vme_constant_setup(ctx, encode_state, encoder_context); - if (encoder_context->quality_level == ENCODER_LOW_QUALITY) - gen7_vme_vme_state_setup(ctx, encode_state, is_intra, encoder_context); - else - gen7_vme_avc_state_setup(ctx, encode_state, is_intra, encoder_context); + gen7_vme_avc_state_setup(ctx, encode_state, is_intra, encoder_context); /*Programing media pipeline*/ gen7_vme_pipeline_programing(ctx, encode_state, encoder_context); diff --git a/src/shaders/vme/inter_frame_ivb.asm b/src/shaders/vme/inter_frame_ivb.asm index 3c08851..46f2b4b 100644 --- a/src/shaders/vme/inter_frame_ivb.asm +++ b/src/shaders/vme/inter_frame_ivb.asm @@ -391,12 +391,14 @@ mov (1) mb_intra_struct_ub<1>:UB input_mb_intra_ub<0,1,0>:UB {align1}; /* M0 */ /* IME search */ +cmp.z.f0.0 (1) null<1>:uw quality_level_ub<0,1,0>:ub LOW_QUALITY_LEVEL:uw {align1}; +(f0.0) jmpi (1) __low_quality_search; + +__high_quality_search: mov (1) vme_m0.12<1>:UD SEARCH_CTRL_SINGLE + INTER_PART_MASK + INTER_SAD_HAAR + SUB_PEL_MODE_QUARTER:UD {align1}; /* 16x16 Source, 1/4 pixel, harr */ mov (1) vme_m0.22<1>:UW REF_REGION_SIZE {align1}; /* Reference Width&Height, 48x40 */ -mov (1) vme_m0.0<1>:UD vme_m0.8<0,1,0>:UD {align1}; - mov (1) vme_m0.0<1>:W -16:W {align1}; mov (1) vme_m0.2<1>:W -12:W {align1}; @@ -405,6 +407,22 @@ and.z.f0.0 (1) null:uw input_mb_intra_ub<0,1,0>:ub INTRA_PRED_AVAIL_FLAG_AE:uw and.z.f0.0 (1) null:uw input_mb_intra_ub<0,1,0>:ub INTRA_PRED_AVAIL_FLAG_B:uw {align1}; (f0.0) add (1) vme_m0.2<1>:w vme_m0.2<0,1,0>:w 8:w {align1}; +jmpi __vme_msg; + +__low_quality_search: +mov (1) vme_m0.12<1>:UD SEARCH_CTRL_SINGLE + INTER_PART_MASK + INTER_SAD_HAAR + SUB_PEL_MODE_HALF:UD {align1}; +/* 16x16 Source, 1/2 pixel, harr */ +mov (1) vme_m0.22<1>:UW MIN_REF_REGION_SIZE {align1}; /* Reference Width&Height, 32x32 */ + +mov (1) vme_m0.0<1>:W -8:W {align1}; +mov (1) vme_m0.2<1>:W -8:W {align1}; + +and.z.f0.0 (1) null:uw input_mb_intra_ub<0,1,0>:ub INTRA_PRED_AVAIL_FLAG_AE:uw {align1}; +(f0.0) add (1) vme_m0.0<1>:w vme_m0.0<0,1,0>:w 4:w {align1}; +and.z.f0.0 (1) null:uw input_mb_intra_ub<0,1,0>:ub INTRA_PRED_AVAIL_FLAG_B:uw {align1}; +(f0.0) add (1) vme_m0.2<1>:w vme_m0.2<0,1,0>:w 4:w {align1}; + +__vme_msg: mov (1) vme_m0.4<1>:UD vme_m0.0<0,1,0>:UD {align1}; add (2) vme_m0.0<1>:w vme_m0.0<2,2,1>:w mb_ref_win.16<2,2,1>:w {align1}; add (2) vme_m0.4<1>:w vme_m0.4<2,2,1>:w mb_ref_win.16<2,2,1>:w {align1}; diff --git a/src/shaders/vme/inter_frame_ivb.g7b b/src/shaders/vme/inter_frame_ivb.g7b index e4db6ea..7ed38c5 100644 --- a/src/shaders/vme/inter_frame_ivb.g7b +++ b/src/shaders/vme/inter_frame_ivb.g7b @@ -141,13 +141,13 @@ { 0x00000001, 0x2fa401ad, 0x00000b04, 0x00000000 }, { 0x00000001, 0x2fa801ad, 0x00000b24, 0x00000000 }, { 0x00000040, 0x2fe00c01, 0x00001400, 0x00000020 }, - { 0x00000020, 0x34001c00, 0x00001400, 0x000000bc }, + { 0x00000020, 0x34001c00, 0x00001400, 0x000000d0 }, { 0x00000001, 0x2ac001ad, 0x00000fe4, 0x00000000 }, { 0x00000001, 0x2fa001ad, 0x00000ae6, 0x00000000 }, { 0x00000001, 0x2fa401ad, 0x00000b06, 0x00000000 }, { 0x00000001, 0x2fa801ad, 0x00000b26, 0x00000000 }, { 0x00000040, 0x2fe00c01, 0x00001400, 0x00000020 }, - { 0x00000020, 0x34001c00, 0x00001400, 0x000000b0 }, + { 0x00000020, 0x34001c00, 0x00001400, 0x000000c4 }, { 0x00000001, 0x2ac201ad, 0x00000fe4, 0x00000000 }, { 0x0020000c, 0x2a803dad, 0x00450ac0, 0x00020002 }, { 0x00200040, 0x2a883dad, 0x00450a80, 0x00030003 }, @@ -163,15 +163,25 @@ { 0x01000005, 0x20002e28, 0x000000a4, 0x00010001 }, { 0x00010001, 0x247c0171, 0x00000000, 0x00020002 }, { 0x00000001, 0x247d0231, 0x000000a5, 0x00000000 }, + { 0x01000010, 0x20002e28, 0x000000a7, 0x00020002 }, + { 0x00010020, 0x34001c00, 0x00001400, 0x00000012 }, { 0x00000001, 0x244c0061, 0x00000000, 0x00203000 }, { 0x00000001, 0x24560169, 0x00000000, 0x28302830 }, - { 0x00000001, 0x24400021, 0x00000448, 0x00000000 }, { 0x00000001, 0x244001ed, 0x00000000, 0xfff0fff0 }, { 0x00000001, 0x244201ed, 0x00000000, 0xfff4fff4 }, { 0x01000005, 0x20002e28, 0x000000a5, 0x00600060 }, { 0x00010040, 0x24403dad, 0x00000440, 0x000c000c }, { 0x01000005, 0x20002e28, 0x000000a5, 0x00100010 }, { 0x00010040, 0x24423dad, 0x00000442, 0x00080008 }, + { 0x00000020, 0x34001c00, 0x00001400, 0x00000010 }, + { 0x00000001, 0x244c0061, 0x00000000, 0x00201000 }, + { 0x00000001, 0x24560169, 0x00000000, 0x20202020 }, + { 0x00000001, 0x244001ed, 0x00000000, 0xfff8fff8 }, + { 0x00000001, 0x244201ed, 0x00000000, 0xfff8fff8 }, + { 0x01000005, 0x20002e28, 0x000000a5, 0x00600060 }, + { 0x00010040, 0x24403dad, 0x00000440, 0x00040004 }, + { 0x01000005, 0x20002e28, 0x000000a5, 0x00100010 }, + { 0x00010040, 0x24423dad, 0x00000442, 0x00040004 }, { 0x00000001, 0x24440021, 0x00000440, 0x00000000 }, { 0x00200040, 0x244035ad, 0x00450440, 0x00450a90 }, { 0x00200040, 0x244435ad, 0x00450444, 0x00450a90 }, diff --git a/src/shaders/vme/vme7.inc b/src/shaders/vme/vme7.inc index 3fa99b7..8a8c32a 100644 --- a/src/shaders/vme/vme7.inc +++ b/src/shaders/vme/vme7.inc @@ -54,6 +54,8 @@ define(`SEARCH_CTRL_DUAL_RECORD', `0x00000300') define(`SEARCH_CTRL_DUAL_REFERENCE', `0x00000700') define(`REF_REGION_SIZE', `0x2830:UW') +define(`MIN_REF_REGION_SIZE', `0x2020:UW') +define(`DREF_REGION_SIZE', `0x2020:UW') define(`BI_SUB_MB_PART_MASK', `0x0c000000') define(`MAX_NUM_MV', `0x00000020') @@ -132,6 +134,7 @@ define(`orig_y_ub', `inline_reg0.1') define(`transform_8x8_ub', `inline_reg0.4') define(`input_mb_intra_ub', `inline_reg0.5') define(`num_macroblocks', `inline_reg0.6') +define(`quality_level_ub', `inline_reg0.7') /* * GRF 6~11 -- reserved @@ -291,7 +294,6 @@ define(`mb_mv3', `r96') define(`mb_ref', `r97') define(`mb_ref_win', `r84') -define(`DREF_REGION_SIZE', `0x2020:UW') define(`PRED_L0', `0x0':uw) define(`PRED_L1', `0x1':uw) define(`PRED_BI', `0x2':uw) @@ -317,3 +319,7 @@ define(`INTER_8X16MODE', `0x02') define(`OBR_MESSAGE_FENCE', `7') define(`OBR_MF_NOCOMMIT', `0') define(`OBR_MF_COMMIT', `0x20') + +define(`DEFAULT_QUALITY_LEVEL', `0x00') +define(`HIGH_QUALITY_LEVEL', `0x01') +define(`LOW_QUALITY_LEVEL', `0x02') -- 1.7.9.5 _______________________________________________ Libva mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/libva
