nvc0: Add support for video buffer

1 files changed, 214 insertions, 0 deletions

diff --git a/src/gallium/drivers/nvc0/nvc0_video.c b/src/gallium/drivers/nvc0/nvc0_video.c
new file mode 100644
index 00000000000..5cf16e79b2b
--- /dev/null
+++ b/src/gallium/drivers/nvc0/nvc0_video.c
@@ -0,0 +1,214 @@
+/*
+ * Copyright 2011 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 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_video.h"
+
+#include "util/u_sampler.h"
+#include "util/u_format.h"
+
+#include <sys/mman.h>
+#include <fcntl.h>
+
+int
+nvc0_screen_get_video_param(struct pipe_screen *pscreen,
+                            enum pipe_video_profile profile,
+                            enum pipe_video_cap param)
+{
+   switch (param) {
+   case PIPE_VIDEO_CAP_SUPPORTED:
+      return profile >= PIPE_VIDEO_PROFILE_MPEG1;
+   case PIPE_VIDEO_CAP_NPOT_TEXTURES:
+      return 1;
+   case PIPE_VIDEO_CAP_MAX_WIDTH:
+   case PIPE_VIDEO_CAP_MAX_HEIGHT:
+      return nouveau_screen(pscreen)->device->chipset < 0xd0 ? 2048 : 4096;
+   case PIPE_VIDEO_CAP_PREFERED_FORMAT:
+      return PIPE_FORMAT_NV12;
+   case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
+   case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
+      return true;
+   case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
+      return false;
+   default:
+      debug_printf("unknown video param: %d\n", param);
+      return 0;
+   }
+}
+
+struct pipe_video_decoder *
+nvc0_create_decoder(struct pipe_context *context,
+                    enum pipe_video_profile profile,
+                    enum pipe_video_entrypoint entrypoint,
+                    enum pipe_video_chroma_format chroma_format,
+                    unsigned width, unsigned height, unsigned max_references,
+                    bool chunked_decode)
+{
+   if (getenv("XVMC_VL"))
+       return vl_create_decoder(context, profile, entrypoint,
+                                chroma_format, width, height,
+                                max_references, chunked_decode);
+
+   if (entrypoint != PIPE_VIDEO_ENTRYPOINT_BITSTREAM) {
+      debug_printf("%x\n", entrypoint);
+      return NULL;
+   }
+
+   return NULL;
+}
+
+static struct pipe_sampler_view **
+nvc0_video_buffer_sampler_view_planes(struct pipe_video_buffer *buffer)
+{
+   struct nvc0_video_buffer *buf = (struct nvc0_video_buffer *)buffer;
+   return buf->sampler_view_planes;
+}
+
+static struct pipe_sampler_view **
+nvc0_video_buffer_sampler_view_components(struct pipe_video_buffer *buffer)
+{
+   struct nvc0_video_buffer *buf = (struct nvc0_video_buffer *)buffer;
+   return buf->sampler_view_components;
+}
+
+static struct pipe_surface **
+nvc0_video_buffer_surfaces(struct pipe_video_buffer *buffer)
+{
+   struct nvc0_video_buffer *buf = (struct nvc0_video_buffer *)buffer;
+   return buf->surfaces;
+}
+
+static void
+nvc0_video_buffer_destroy(struct pipe_video_buffer *buffer)
+{
+   struct nvc0_video_buffer *buf = (struct nvc0_video_buffer *)buffer;
+   unsigned i;
+
+   assert(buf);
+
+   for (i = 0; i < VL_NUM_COMPONENTS; ++i) {
+      pipe_resource_reference(&buf->resources[i], NULL);
+      pipe_sampler_view_reference(&buf->sampler_view_planes[i], NULL);
+      pipe_sampler_view_reference(&buf->sampler_view_components[i], NULL);
+      pipe_surface_reference(&buf->surfaces[i * 2], NULL);
+      pipe_surface_reference(&buf->surfaces[i * 2 + 1], NULL);
+   }
+   FREE(buffer);
+}
+
+struct pipe_video_buffer *
+nvc0_video_buffer_create(struct pipe_context *pipe,
+                         const struct pipe_video_buffer *templat)
+{
+   struct nvc0_video_buffer *buffer;
+   struct pipe_resource templ;
+   unsigned i, j, component;
+   struct pipe_sampler_view sv_templ;
+   struct pipe_surface surf_templ;
+
+   assert(templat->interlaced);
+   if (getenv("XVMC_VL") || templat->buffer_format != PIPE_FORMAT_NV12)
+      return vl_video_buffer_create(pipe, templat);
+
+   assert(templat->chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420);
+
+   buffer = CALLOC_STRUCT(nvc0_video_buffer);
+   if (!buffer)
+      return NULL;
+   assert(!(templat->height % 4));
+   assert(!(templat->width % 2));
+
+   buffer->base.buffer_format = templat->buffer_format;
+   buffer->base.context = pipe;
+   buffer->base.destroy = nvc0_video_buffer_destroy;
+   buffer->base.chroma_format = templat->chroma_format;
+   buffer->base.width = templat->width;
+   buffer->base.height = templat->height;
+   buffer->base.get_sampler_view_planes = nvc0_video_buffer_sampler_view_planes;
+   buffer->base.get_sampler_view_components = nvc0_video_buffer_sampler_view_components;
+   buffer->base.get_surfaces = nvc0_video_buffer_surfaces;
+   buffer->base.interlaced = true;
+
+   memset(&templ, 0, sizeof(templ));
+   templ.target = PIPE_TEXTURE_3D;
+   templ.depth0 = 2;
+   templ.bind = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET;
+   templ.format = PIPE_FORMAT_R8_UNORM;
+   templ.width0 = buffer->base.width;
+   templ.height0 = buffer->base.height/2;
+   templ.flags = NVC0_RESOURCE_FLAG_VIDEO;
+   templ.last_level = 0;
+   templ.array_size = 1;
+
+   buffer->resources[0] = pipe->screen->resource_create(pipe->screen, &templ);
+   if (!buffer->resources[0])
+      goto error;
+
+   templ.format = PIPE_FORMAT_R8G8_UNORM;
+   buffer->num_planes = 2;
+   templ.width0 /= 2;
+   templ.height0 /= 2;
+   for (i = 1; i < buffer->num_planes; ++i) {
+      buffer->resources[i] = pipe->screen->resource_create(pipe->screen, &templ);
+      if (!buffer->resources[i])
+         goto error;
+   }
+
+   memset(&sv_templ, 0, sizeof(sv_templ));
+   for (component = 0, i = 0; i < buffer->num_planes; ++i ) {
+      struct pipe_resource *res = buffer->resources[i];
+      unsigned nr_components = util_format_get_nr_components(res->format);
+
+      u_sampler_view_default_template(&sv_templ, res, res->format);
+      buffer->sampler_view_planes[i] = pipe->create_sampler_view(pipe, res, &sv_templ);
+      if (!buffer->sampler_view_planes[i])
+         goto error;
+
+      for (j = 0; j < nr_components; ++j, ++component) {
+         sv_templ.swizzle_r = sv_templ.swizzle_g = sv_templ.swizzle_b = PIPE_SWIZZLE_RED + j;
+         sv_templ.swizzle_a = PIPE_SWIZZLE_ONE;
+
+         buffer->sampler_view_components[component] = pipe->create_sampler_view(pipe, res, &sv_templ);
+         if (!buffer->sampler_view_components[component])
+            goto error;
+      }
+  }
+
+   memset(&surf_templ, 0, sizeof(surf_templ));
+   for (j = 0; j < buffer->num_planes; ++j) {
+      surf_templ.format = buffer->resources[j]->format;
+      surf_templ.u.tex.first_layer = surf_templ.u.tex.last_layer = 0;
+      buffer->surfaces[j * 2] = pipe->create_surface(pipe, buffer->resources[j], &surf_templ);
+      if (!buffer->surfaces[j * 2])
+         goto error;
+
+      surf_templ.u.tex.first_layer = surf_templ.u.tex.last_layer = 1;
+      buffer->surfaces[j * 2 + 1] = pipe->create_surface(pipe, buffer->resources[j], &surf_templ);
+      if (!buffer->surfaces[j * 2 + 1])
+         goto error;
+   }
+
+   return &buffer->base;
+
+error:
+   nvc0_video_buffer_destroy(&buffer->base);
+   return NULL;
+}