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/*

 * Copyright 2011-2013 Maarten Lankhorst

 *

 * 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 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.

 */

#include "nvc0/nvc0_video.h"

static void

nvc0_decoder_setup_ppp(struct nouveau_vp3_decoder *dec, struct nouveau_vp3_video_buffer *target, uint32_t low700) {

   struct nouveau_pushbuf *push = dec->pushbuf[2];

   uint32_t stride_in = mb(dec->base.width);

   uint32_t stride_out = mb(target->resources[0]->width0);

   uint32_t dec_h = mb(dec->base.height);

   uint32_t dec_w = mb(dec->base.width);

   uint64_t in_addr;

   uint32_t y2, cbcr, cbcr2, i;

   struct nouveau_pushbuf_refn bo_refs[] = {

      { NULL, NOUVEAU_BO_WR | NOUVEAU_BO_VRAM },

      { NULL, NOUVEAU_BO_WR | NOUVEAU_BO_VRAM },

      { dec->ref_bo, NOUVEAU_BO_RD | NOUVEAU_BO_VRAM },

#if NOUVEAU_VP3_DEBUG_FENCE

      { dec->fence_bo, NOUVEAU_BO_WR | NOUVEAU_BO_GART },

#endif

   };

   unsigned num_refs = sizeof(bo_refs)/sizeof(*bo_refs);

   for (i = 0; i < 2; ++i) {

      struct nv50_miptree *mt = (struct nv50_miptree *)target->resources[i];

      bo_refs[i].bo = mt->base.bo;

   }

   nouveau_pushbuf_refn(push, bo_refs, num_refs);

   nouveau_vp3_ycbcr_offsets(dec, &y2, &cbcr, &cbcr2);

   BEGIN_NVC0(push, SUBC_PPP(0x700), 10);

   in_addr = nouveau_vp3_video_addr(dec, target) >> 8;

   PUSH_DATA (push, (stride_out << 24) | (stride_out << 16) | low700); // 700

   PUSH_DATA (push, (stride_in << 24) | (stride_in << 16) | (dec_h << 8) | dec_w); // 704

   assert(dec_w == stride_in);

   /* Input: */

   PUSH_DATA (push, in_addr); // 708

   PUSH_DATA (push, in_addr + y2); // 70c

   PUSH_DATA (push, in_addr + cbcr); // 710

   PUSH_DATA (push, in_addr + cbcr2); // 714

   for (i = 0; i < 2; ++i) {

      struct nv50_miptree *mt = (struct nv50_miptree *)target->resources[i];

      PUSH_DATA (push, mt->base.address >> 8);

      PUSH_DATA (push, (mt->base.address + mt->total_size/2) >> 8);

      mt->base.status |= NOUVEAU_BUFFER_STATUS_GPU_WRITING;

   }

}

static uint32_t

nvc0_decoder_vc1_ppp(struct nouveau_vp3_decoder *dec, struct pipe_vc1_picture_desc *desc, struct nouveau_vp3_video_buffer *target) {

   struct nouveau_pushbuf *push = dec->pushbuf[2];

   nvc0_decoder_setup_ppp(dec, target, 0x1412);

   assert(!desc->deblockEnable);

   assert(!(dec->base.width & 0xf));

   assert(!(dec->base.height & 0xf));

   BEGIN_NVC0(push, SUBC_PPP(0x400), 1);

   PUSH_DATA (push, desc->pquant << 11);

   // 728 = wtf?

   return 0x10;

}

void

nvc0_decoder_ppp(struct nouveau_vp3_decoder *dec, union pipe_desc desc, struct nouveau_vp3_video_buffer *target, unsigned comm_seq) {

   enum pipe_video_format codec = u_reduce_video_profile(dec->base.profile);

   struct nouveau_pushbuf *push = dec->pushbuf[2];

   unsigned ppp_caps = 0x10;

   unsigned fence_extra = 0;

#if NOUVEAU_VP3_DEBUG_FENCE

   fence_extra = 4;

#endif

   nouveau_pushbuf_space(push, 11 + (codec == PIPE_VIDEO_FORMAT_VC1 ? 2 : 0) + 3 + fence_extra + 2, 4, 0);

   switch (codec) {

   case PIPE_VIDEO_FORMAT_MPEG12: {

      unsigned mpeg2 = dec->base.profile != PIPE_VIDEO_PROFILE_MPEG1;

      nvc0_decoder_setup_ppp(dec, target, 0x1410 | mpeg2);

      break;

   }

   case PIPE_VIDEO_FORMAT_MPEG4: nvc0_decoder_setup_ppp(dec, target, 0x1414); break;

   case PIPE_VIDEO_FORMAT_VC1: ppp_caps = nvc0_decoder_vc1_ppp(dec, desc.vc1, target); break;

   case PIPE_VIDEO_FORMAT_MPEG4_AVC: nvc0_decoder_setup_ppp(dec, target, 0x1413); break;

   default: assert(0);

   }

   BEGIN_NVC0(push, SUBC_PPP(0x734), 2);

   PUSH_DATA (push, comm_seq);

   PUSH_DATA (push, ppp_caps);

#if NOUVEAU_VP3_DEBUG_FENCE

   BEGIN_NVC0(push, SUBC_PPP(0x240), 3);

   PUSH_DATAh(push, (dec->fence_bo->offset + 0x20));

   PUSH_DATA (push, (dec->fence_bo->offset + 0x20));

   PUSH_DATA (push, dec->fence_seq);

   BEGIN_NVC0(push, SUBC_PPP(0x300), 1);

   PUSH_DATA (push, 1);

   PUSH_KICK (push);

   {

      unsigned spin = 0;

      do {

         usleep(100);

         if ((spin++ & 0xff) == 0xff)

            debug_printf("p%u: %u\n", dec->fence_seq, dec->fence_map[8]);

      } while (dec->fence_seq > dec->fence_map[8]);

   }

#else

   BEGIN_NVC0(push, SUBC_PPP(0x300), 1);

   PUSH_DATA (push, 0);

   PUSH_KICK (push);

#endif

}