/**************************************************************************
 *
 * Copyright 2010 Thomas Balling Sørensen & Orasanu Lucian.
 * Copyright 2014 Advanced Micro Devices, Inc.
 * All Rights Reserved.
 *
 * 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, sub license, 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 NON-INFRINGEMENT.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 "pipe/p_screen.h"

#include "util/u_memory.h"
#include "util/u_handle_table.h"
#include "util/u_surface.h"
#include "util/u_video.h"

#include "vl/vl_winsys.h"

#include "va_private.h"

static const VAImageFormat formats[VL_VA_MAX_IMAGE_FORMATS] =
{
   {VA_FOURCC('N','V','1','2')},
   {VA_FOURCC('I','4','2','0')},
   {VA_FOURCC('Y','V','1','2')},
   {VA_FOURCC('Y','U','Y','V')},
   {VA_FOURCC('U','Y','V','Y')},
};

static void
vlVaVideoSurfaceSize(vlVaSurface *p_surf, int component,
                     unsigned *width, unsigned *height)
{
   *width = p_surf->templat.width;
   *height = p_surf->templat.height;

   if (component > 0) {
      if (p_surf->templat.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420) {
         *width /= 2;
         *height /= 2;
      } else if (p_surf->templat.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_422)
         *width /= 2;
   }
   if (p_surf->templat.interlaced)
      *height /= 2;
}

VAStatus
vlVaQueryImageFormats(VADriverContextP ctx, VAImageFormat *format_list, int *num_formats)
{
   struct pipe_screen *pscreen;
   enum pipe_format format;
   int i;

   if (!ctx)
      return VA_STATUS_ERROR_INVALID_CONTEXT;

   if (!(format_list && num_formats))
      return VA_STATUS_ERROR_INVALID_PARAMETER;

   *num_formats = 0;
   pscreen = VL_VA_PSCREEN(ctx);
   for (i = 0; i < VL_VA_MAX_IMAGE_FORMATS; ++i) {
      format = YCbCrToPipe(formats[i].fourcc);
      if (pscreen->is_video_format_supported(pscreen, format,
          PIPE_VIDEO_PROFILE_UNKNOWN,
          PIPE_VIDEO_ENTRYPOINT_BITSTREAM))
         format_list[(*num_formats)++] = formats[i];
   }

   return VA_STATUS_SUCCESS;
}

VAStatus
vlVaCreateImage(VADriverContextP ctx, VAImageFormat *format, int width, int height, VAImage *image)
{
   vlVaDriver *drv;
   int w, h;

   if (!ctx)
      return VA_STATUS_ERROR_INVALID_CONTEXT;

   if (!(format && image && width && height))
      return VA_STATUS_ERROR_INVALID_PARAMETER;

   drv = VL_VA_DRIVER(ctx);

   image->image_id = handle_table_add(drv->htab, image);
   image->format = *format;
   image->width = width;
   image->height = height;
   w = align(width, 2);
   h = align(width, 2);

   switch (format->fourcc) {
   case VA_FOURCC('N','V','1','2'):
      image->num_planes = 2;
      image->pitches[0] = w;
      image->offsets[0] = 0;
      image->pitches[1] = w;
      image->offsets[1] = w * h;
      image->data_size  = w * h * 3 / 2;
      break;

   case VA_FOURCC('I','4','2','0'):
   case VA_FOURCC('Y','V','1','2'):
      image->num_planes = 3;
      image->pitches[0] = w;
      image->offsets[0] = 0;
      image->pitches[1] = w / 2;
      image->offsets[1] = w * h;
      image->pitches[2] = w / 2;
      image->offsets[2] = w * h * 5 / 4;
      image->data_size  = w * h * 3 / 2;
      break;

   case VA_FOURCC('U','Y','V','Y'):
   case VA_FOURCC('Y','U','Y','V'):
      image->num_planes = 1;
      image->pitches[0] = w * 2;
      image->offsets[0] = 0;
      image->data_size  = w * h * 2;
      break;

   default:
      return VA_STATUS_ERROR_INVALID_IMAGE_FORMAT;
   }

   return vlVaCreateBuffer(ctx, 0, VAImageBufferType,
                           align(image->data_size, 16),
                           1, NULL, &image->buf);
}

VAStatus
vlVaDeriveImage(VADriverContextP ctx, VASurfaceID surface, VAImage *image)
{
   if (!ctx)
      return VA_STATUS_ERROR_INVALID_CONTEXT;

   return VA_STATUS_ERROR_UNIMPLEMENTED;
}

VAStatus
vlVaDestroyImage(VADriverContextP ctx, VAImageID image)
{
   VAImage  *vaimage;

   if (!ctx)
      return VA_STATUS_ERROR_INVALID_CONTEXT;

   vaimage = handle_table_get(VL_VA_DRIVER(ctx)->htab, image);
   if (!vaimage)
      return VA_STATUS_ERROR_INVALID_IMAGE;

   return vlVaDestroyBuffer(ctx, vaimage->buf);
}

VAStatus
vlVaSetImagePalette(VADriverContextP ctx, VAImageID image, unsigned char *palette)
{
   if (!ctx)
      return VA_STATUS_ERROR_INVALID_CONTEXT;

   return VA_STATUS_ERROR_UNIMPLEMENTED;
}

VAStatus
vlVaGetImage(VADriverContextP ctx, VASurfaceID surface, int x, int y,
             unsigned int width, unsigned int height, VAImageID image)
{
   vlVaDriver *drv;
   vlVaSurface *surf;
   vlVaBuffer *img_buf;
   VAImage *vaimage;
   struct pipe_sampler_view **views;
   enum pipe_format format;
   bool convert = false;
   void *data[3];
   unsigned pitches[3], i, j;

   if (!ctx)
      return VA_STATUS_ERROR_INVALID_CONTEXT;

   drv = VL_VA_DRIVER(ctx);

   surf = handle_table_get(drv->htab, surface);
   if (!surf || !surf->buffer)
      return VA_STATUS_ERROR_INVALID_SURFACE;

   vaimage = handle_table_get(drv->htab, image);
   if (!vaimage)
      return VA_STATUS_ERROR_INVALID_IMAGE;

   img_buf = handle_table_get(drv->htab, vaimage->buf);
   if (!img_buf)
      return VA_STATUS_ERROR_INVALID_BUFFER;

   format = YCbCrToPipe(vaimage->format.fourcc);
   if (format == PIPE_FORMAT_NONE)
      return VA_STATUS_ERROR_OPERATION_FAILED;

   if (format != surf->buffer->buffer_format) {
      /* support NV12 to YV12 conversion now only */
      if (format == PIPE_FORMAT_YV12 &&
          surf->buffer->buffer_format == PIPE_FORMAT_NV12)
         convert = true;
      else
         return VA_STATUS_ERROR_OPERATION_FAILED;
   }

   views = surf->buffer->get_sampler_view_planes(surf->buffer);
   if (!views)
      return VA_STATUS_ERROR_OPERATION_FAILED;

   for (i = 0; i < vaimage->num_planes; i++) {
      data[i] = img_buf->data + vaimage->offsets[i];
      pitches[i] = vaimage->pitches[i];
   }
   if (vaimage->format.fourcc == VA_FOURCC('I','4','2','0')) {
      void *tmp_d;
      unsigned tmp_p;
      tmp_d  = data[1];
      data[1] = data[2];
      data[2] = tmp_d;
      tmp_p = pitches[1];
      pitches[1] = pitches[2];
      pitches[2] = tmp_p;
   }

   for (i = 0; i < vaimage->num_planes; i++) {
      unsigned width, height;
      if (!views[i]) continue;
      vlVaVideoSurfaceSize(surf, i, &width, &height);
      for (j = 0; j < views[i]->texture->array_size; ++j) {
         struct pipe_box box = {0, 0, j, width, height, 1};
         struct pipe_transfer *transfer;
         uint8_t *map;
         map = drv->pipe->transfer_map(drv->pipe, views[i]->texture, 0,
                  PIPE_TRANSFER_READ, &box, &transfer);
         if (!map)
            return VA_STATUS_ERROR_OPERATION_FAILED;

         if (i == 1 && convert) {
            u_copy_nv12_to_yv12(data, pitches, i, j,
               transfer->stride, views[i]->texture->array_size,
               map, box.width, box.height);
         } else {
            util_copy_rect(data[i] + pitches[i] * j,
               views[i]->texture->format,
               pitches[i] * views[i]->texture->array_size, 0, 0,
               box.width, box.height, map, transfer->stride, 0, 0);
         }
         pipe_transfer_unmap(drv->pipe, transfer);
      }
   }

   return VA_STATUS_SUCCESS;
}

VAStatus
vlVaPutImage(VADriverContextP ctx, VASurfaceID surface, VAImageID image,
             int src_x, int src_y, unsigned int src_width, unsigned int src_height,
             int dest_x, int dest_y, unsigned int dest_width, unsigned int dest_height)
{
   vlVaDriver *drv;
   vlVaSurface *surf;
   vlVaBuffer *img_buf;
   VAImage *vaimage;
   struct pipe_sampler_view **views;
   enum pipe_format format;
   void *data[3];
   unsigned pitches[3], i, j;

   if (!ctx)
      return VA_STATUS_ERROR_INVALID_CONTEXT;

   drv = VL_VA_DRIVER(ctx);

   surf = handle_table_get(drv->htab, surface);
   if (!surf || !surf->buffer)
      return VA_STATUS_ERROR_INVALID_SURFACE;

   vaimage = handle_table_get(drv->htab, image);
   if (!vaimage)
      return VA_STATUS_ERROR_INVALID_IMAGE;

   img_buf = handle_table_get(drv->htab, vaimage->buf);
   if (!img_buf)
      return VA_STATUS_ERROR_INVALID_BUFFER;

   format = YCbCrToPipe(vaimage->format.fourcc);
   if (format == PIPE_FORMAT_NONE)
      return VA_STATUS_ERROR_OPERATION_FAILED;

   if (surf->buffer == NULL || format != surf->buffer->buffer_format) {
      if (surf->buffer)
         surf->buffer->destroy(surf->buffer);
      surf->templat.buffer_format = format;
      surf->buffer = drv->pipe->create_video_buffer(drv->pipe, &surf->templat);
      if (!surf->buffer)
         return VA_STATUS_ERROR_ALLOCATION_FAILED;
   }

   views = surf->buffer->get_sampler_view_planes(surf->buffer);
   if (!views)
      return VA_STATUS_ERROR_OPERATION_FAILED;

   for (i = 0; i < vaimage->num_planes; i++) {
      data[i] = img_buf->data + vaimage->offsets[i];
      pitches[i] = vaimage->pitches[i];
   }
   if (vaimage->format.fourcc == VA_FOURCC('I','4','2','0')) {
      void *tmp_d;
      unsigned tmp_p;
      tmp_d  = data[1];
      data[1] = data[2];
      data[2] = tmp_d;
      tmp_p = pitches[1];
      pitches[1] = pitches[2];
      pitches[2] = tmp_p;
   }

   for (i = 0; i < vaimage->num_planes; ++i) {
      unsigned width, height;
      if (!views[i]) continue;
      vlVaVideoSurfaceSize(surf, i, &width, &height);
      for (j = 0; j < views[i]->texture->array_size; ++j) {
         struct pipe_box dst_box = {0, 0, j, width, height, 1};
         drv->pipe->transfer_inline_write(drv->pipe, views[i]->texture, 0,
            PIPE_TRANSFER_WRITE, &dst_box,
            data[i] + pitches[i] * j,
            pitches[i] * views[i]->texture->array_size, 0);
      }
   }

   return VA_STATUS_SUCCESS;
}