Mesa (pipe-video): [g3dvl] add support for different decoding entry points

Christian König deathsimple at kemper.freedesktop.org
Thu Apr 7 11:11:38 PDT 2011


Module: Mesa
Branch: pipe-video
Commit: fcdf50f74befad8d89eb3f9cdfd88b82d1daa98c
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=fcdf50f74befad8d89eb3f9cdfd88b82d1daa98c

Author: Christian König <deathsimple at vodafone.de>
Date:   Thu Apr  7 20:10:55 2011 +0200

[g3dvl] add support for different decoding entry points

---

 src/gallium/auxiliary/vl/vl_context.c            |    5 +-
 src/gallium/auxiliary/vl/vl_idct.c               |    6 +-
 src/gallium/auxiliary/vl/vl_idct.h               |    2 +-
 src/gallium/auxiliary/vl/vl_mpeg12_decoder.c     |  148 ++++++++++++----------
 src/gallium/auxiliary/vl/vl_mpeg12_decoder.h     |    3 +-
 src/gallium/auxiliary/vl/vl_mpeg12_mc_renderer.c |   14 ++-
 src/gallium/auxiliary/vl/vl_mpeg12_mc_renderer.h |    3 +-
 src/gallium/include/pipe/p_defines.h             |    7 +
 src/gallium/include/pipe/p_video_context.h       |    2 +
 src/gallium/state_trackers/xorg/xvmc/context.c   |    5 +-
 10 files changed, 113 insertions(+), 82 deletions(-)

diff --git a/src/gallium/auxiliary/vl/vl_context.c b/src/gallium/auxiliary/vl/vl_context.c
index 5a55f3b..2bc027f 100644
--- a/src/gallium/auxiliary/vl/vl_context.c
+++ b/src/gallium/auxiliary/vl/vl_context.c
@@ -173,6 +173,7 @@ error_map:
 static struct pipe_video_decoder *
 vl_context_create_decoder(struct pipe_video_context *context,
                           enum pipe_video_profile profile,
+                          enum pipe_video_entrypoint entrypoint,
                           enum pipe_video_chroma_format chroma_format,
                           unsigned width, unsigned height)
 {
@@ -187,8 +188,8 @@ vl_context_create_decoder(struct pipe_video_context *context,
 
    switch (u_reduce_video_profile(profile)) {
       case PIPE_VIDEO_CODEC_MPEG12:
-         return vl_create_mpeg12_decoder(context, ctx->pipe, profile, chroma_format,
-                                         buffer_width, buffer_height);
+         return vl_create_mpeg12_decoder(context, ctx->pipe, profile, entrypoint,
+                                         chroma_format, buffer_width, buffer_height);
       default:
          return NULL;
    }
diff --git a/src/gallium/auxiliary/vl/vl_idct.c b/src/gallium/auxiliary/vl/vl_idct.c
index a7b8a18..dc4a9bb 100644
--- a/src/gallium/auxiliary/vl/vl_idct.c
+++ b/src/gallium/auxiliary/vl/vl_idct.c
@@ -38,8 +38,6 @@
 #include <tgsi/tgsi_ureg.h>
 #include "vl_types.h"
 
-#define SCALE_FACTOR_16_TO_9 (32768.0f / 256.0f)
-
 #define NR_RENDER_TARGETS 4
 
 enum VS_OUTPUT
@@ -534,10 +532,8 @@ cleanup_intermediate(struct vl_idct *idct, struct vl_idct_buffer *buffer)
 }
 
 struct pipe_sampler_view *
-vl_idct_upload_matrix(struct pipe_context *pipe)
+vl_idct_upload_matrix(struct pipe_context *pipe, float scale)
 {
-   const float scale = sqrtf(SCALE_FACTOR_16_TO_9);
-
    struct pipe_resource tex_templ, *matrix;
    struct pipe_sampler_view sv_templ, *sv;
    struct pipe_transfer *buf_transfer;
diff --git a/src/gallium/auxiliary/vl/vl_idct.h b/src/gallium/auxiliary/vl/vl_idct.h
index cd62cde..5d3784c 100644
--- a/src/gallium/auxiliary/vl/vl_idct.h
+++ b/src/gallium/auxiliary/vl/vl_idct.h
@@ -69,7 +69,7 @@ struct vl_idct_buffer
 };
 
 /* upload the idct matrix, which can be shared by all idct instances of a pipe */
-struct pipe_sampler_view *vl_idct_upload_matrix(struct pipe_context *pipe);
+struct pipe_sampler_view *vl_idct_upload_matrix(struct pipe_context *pipe, float scale);
 
 /* init an idct instance */
 bool vl_idct_init(struct vl_idct *idct, struct pipe_context *pipe,
diff --git a/src/gallium/auxiliary/vl/vl_mpeg12_decoder.c b/src/gallium/auxiliary/vl/vl_mpeg12_decoder.c
index 24f3856..31163b9 100644
--- a/src/gallium/auxiliary/vl/vl_mpeg12_decoder.c
+++ b/src/gallium/auxiliary/vl/vl_mpeg12_decoder.c
@@ -25,17 +25,8 @@
  *
  **************************************************************************/
 
-//#include <pipe/p_shader_tokens.h>
-
-//#include "util/u_inlines.h"
-
-//#include <util/u_inlines.h>
-//#include <util/u_memory.h>
-//#include <util/u_keymap.h>
-
-//#include <util/u_video.h>
-//#include <util/u_surface.h>
-//#include <util/u_sampler.h>
+#include <math.h>
+#include <assert.h>
 
 #include <util/u_memory.h>
 #include <util/u_rect.h>
@@ -44,6 +35,8 @@
 #include "vl_mpeg12_decoder.h"
 #include "vl_defines.h"
 
+#define SCALE_FACTOR_16_TO_9 (32768.0f / 256.0f)
+
 static const unsigned const_empty_block_mask_420[3][2][2] = {
         { { 0x20, 0x10 },  { 0x08, 0x04 } },
         { { 0x02, 0x02 },  { 0x02, 0x02 } },
@@ -59,7 +52,10 @@ map_buffers(struct vl_mpeg12_decoder *ctx, struct vl_mpeg12_buffer *buffer)
 
    assert(ctx && buffer);
 
-   sampler_views = buffer->idct_source->get_sampler_views(buffer->idct_source);
+   if (ctx->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
+      sampler_views = buffer->idct_source->get_sampler_views(buffer->idct_source);
+   else
+      sampler_views = buffer->mc_source->get_sampler_views(buffer->mc_source);
    assert(sampler_views);
 
    for (i = 0; i < VL_MAX_PLANES; ++i) {
@@ -156,12 +152,14 @@ vl_mpeg12_buffer_destroy(struct pipe_video_decode_buffer *buffer)
    struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder*)buf->base.decoder;
    assert(buf && dec);
 
-   buf->idct_source->destroy(buf->idct_source);
-   buf->idct_2_mc->destroy(buf->idct_2_mc);
+   if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
+      buf->idct_source->destroy(buf->idct_source);
+      vl_idct_cleanup_buffer(&dec->idct_y, &buf->idct[0]);
+      vl_idct_cleanup_buffer(&dec->idct_c, &buf->idct[1]);
+      vl_idct_cleanup_buffer(&dec->idct_c, &buf->idct[2]);
+   }
+   buf->mc_source->destroy(buf->mc_source);
    vl_vb_cleanup(&buf->vertex_stream);
-   vl_idct_cleanup_buffer(&dec->idct_y, &buf->idct[0]);
-   vl_idct_cleanup_buffer(&dec->idct_c, &buf->idct[1]);
-   vl_idct_cleanup_buffer(&dec->idct_c, &buf->idct[2]);
    vl_mpeg12_mc_cleanup_buffer(&buf->mc[0]);
    vl_mpeg12_mc_cleanup_buffer(&buf->mc[1]);
    vl_mpeg12_mc_cleanup_buffer(&buf->mc[2]);
@@ -238,8 +236,10 @@ vl_mpeg12_destroy(struct pipe_video_decoder *decoder)
    dec->pipe->delete_depth_stencil_alpha_state(dec->pipe, dec->dsa);
 
    vl_mpeg12_mc_renderer_cleanup(&dec->mc);
-   vl_idct_cleanup(&dec->idct_y);
-   vl_idct_cleanup(&dec->idct_c);
+   if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
+      vl_idct_cleanup(&dec->idct_y);
+      vl_idct_cleanup(&dec->idct_c);
+   }
    dec->pipe->delete_vertex_elements_state(dec->pipe, dec->ves[0]);
    dec->pipe->delete_vertex_elements_state(dec->pipe, dec->ves[1]);
    dec->pipe->delete_vertex_elements_state(dec->pipe, dec->ves[2]);
@@ -257,7 +257,7 @@ vl_mpeg12_create_buffer(struct pipe_video_decoder *decoder)
       PIPE_FORMAT_R16G16B16A16_SNORM
    };
 
-   const enum pipe_format idct_2_mc_formats[3] = {
+   const enum pipe_format mc_source_formats[3] = {
       PIPE_FORMAT_R16_SNORM,
       PIPE_FORMAT_R16_SNORM,
       PIPE_FORMAT_R16_SNORM
@@ -291,43 +291,47 @@ vl_mpeg12_create_buffer(struct pipe_video_decoder *decoder)
    if (!buffer->vertex_bufs.individual.stream.buffer)
       goto error_vertex_stream;
 
-   buffer->idct_source = vl_video_buffer_init(dec->base.context, dec->pipe,
-                                              dec->base.width / 4, dec->base.height, 1,
-                                              dec->base.chroma_format, 3,
-                                              idct_source_formats,
-                                              PIPE_USAGE_STREAM);
-   if (!buffer->idct_source)
-      goto error_idct_source;
-
-   buffer->idct_2_mc = vl_video_buffer_init(dec->base.context, dec->pipe,
+   buffer->mc_source = vl_video_buffer_init(dec->base.context, dec->pipe,
                                             dec->base.width, dec->base.height, 1,
                                             dec->base.chroma_format, 3,
-                                            idct_2_mc_formats,
+                                            mc_source_formats,
                                             PIPE_USAGE_STATIC);
-   if (!buffer->idct_2_mc)
-      goto error_idct_2_mc;
 
-   idct_views = buffer->idct_source->get_sampler_views(buffer->idct_source);
-   if (!idct_views)
-      goto error_idct_views;
+   if (!buffer->mc_source)
+      goto error_mc_source;
 
-   idct_surfaces = buffer->idct_2_mc->get_surfaces(buffer->idct_2_mc);
-   if (!idct_surfaces)
-      goto error_idct_surfaces;
+   if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
+      buffer->idct_source = vl_video_buffer_init(dec->base.context, dec->pipe,
+                                                 dec->base.width / 4, dec->base.height, 1,
+                                                 dec->base.chroma_format, 3,
+                                                 idct_source_formats,
+                                                 PIPE_USAGE_STREAM);
+      if (!buffer->idct_source)
+         goto error_idct_source;
 
-   if (!vl_idct_init_buffer(&dec->idct_y, &buffer->idct[0],
-                            idct_views[0], idct_surfaces[0]))
-      goto error_idct_y;
 
-   if (!vl_idct_init_buffer(&dec->idct_c, &buffer->idct[1],
-                            idct_views[1], idct_surfaces[1]))
-      goto error_idct_cb;
+      idct_views = buffer->idct_source->get_sampler_views(buffer->idct_source);
+      if (!idct_views)
+         goto error_idct_views;
+
+      idct_surfaces = buffer->mc_source->get_surfaces(buffer->mc_source);
+      if (!idct_surfaces)
+         goto error_idct_surfaces;
 
-   if (!vl_idct_init_buffer(&dec->idct_c, &buffer->idct[2],
-                            idct_views[2], idct_surfaces[2]))
-      goto error_idct_cr;
+      if (!vl_idct_init_buffer(&dec->idct_y, &buffer->idct[0],
+                               idct_views[0], idct_surfaces[0]))
+         goto error_idct_y;
+
+      if (!vl_idct_init_buffer(&dec->idct_c, &buffer->idct[1],
+                               idct_views[1], idct_surfaces[1]))
+         goto error_idct_cb;
+
+      if (!vl_idct_init_buffer(&dec->idct_c, &buffer->idct[2],
+                               idct_views[2], idct_surfaces[2]))
+         goto error_idct_cr;
+   }
 
-   mc_views = buffer->idct_2_mc->get_sampler_views(buffer->idct_2_mc);
+   mc_views = buffer->mc_source->get_sampler_views(buffer->mc_source);
    if (!mc_views)
       goto error_mc_views;
 
@@ -350,23 +354,27 @@ error_mc_cb:
 
 error_mc_y:
 error_mc_views:
-   vl_idct_cleanup_buffer(&dec->idct_c, &buffer->idct[2]);
+   if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
+      vl_idct_cleanup_buffer(&dec->idct_c, &buffer->idct[2]);
 
 error_idct_cr:
-   vl_idct_cleanup_buffer(&dec->idct_c, &buffer->idct[1]);
+   if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
+      vl_idct_cleanup_buffer(&dec->idct_c, &buffer->idct[1]);
 
 error_idct_cb:
-   vl_idct_cleanup_buffer(&dec->idct_y, &buffer->idct[0]);
+   if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
+      vl_idct_cleanup_buffer(&dec->idct_y, &buffer->idct[0]);
 
 error_idct_y:
 error_idct_surfaces:
 error_idct_views:
-   buffer->idct_2_mc->destroy(buffer->idct_2_mc);
-
-error_idct_2_mc:
-   buffer->idct_source->destroy(buffer->idct_source);
+   if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
+      buffer->idct_source->destroy(buffer->idct_source);
 
 error_idct_source:
+   buffer->mc_source->destroy(buffer->mc_source);
+
+error_mc_source:
    vl_vb_cleanup(&buffer->vertex_stream);
 
 error_vertex_stream:
@@ -408,7 +416,9 @@ vl_mpeg12_decoder_flush_buffer(struct pipe_video_decode_buffer *buffer,
 
    for (i = 0; i < VL_MAX_PLANES; ++i) {
       dec->pipe->bind_vertex_elements_state(dec->pipe, dec->ves[i]);
-      vl_idct_flush(i == 0 ? &dec->idct_y : &dec->idct_c, &buf->idct[i], ne_num);
+
+      if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
+         vl_idct_flush(i == 0 ? &dec->idct_y : &dec->idct_c, &buf->idct[i], ne_num);
 
       sv_refs[0] = sv_past ? sv_past[i] : NULL;
       sv_refs[1] = sv_future ? sv_future[i] : NULL;
@@ -516,11 +526,7 @@ init_idct(struct vl_mpeg12_decoder *dec, unsigned buffer_width, unsigned buffer_
    unsigned chroma_width, chroma_height, chroma_blocks_x, chroma_blocks_y;
    struct pipe_sampler_view *idct_matrix;
 
-   /* TODO: Implement 422, 444 */
-   assert(dec->base.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420);
-   dec->empty_block_mask = &const_empty_block_mask_420;
-
-   if (!(idct_matrix = vl_idct_upload_matrix(dec->pipe)))
+   if (!(idct_matrix = vl_idct_upload_matrix(dec->pipe, sqrt(SCALE_FACTOR_16_TO_9))))
       goto error_idct_matrix;
 
    if (!vl_idct_init(&dec->idct_y, dec->pipe, buffer_width, buffer_height,
@@ -565,6 +571,7 @@ struct pipe_video_decoder *
 vl_create_mpeg12_decoder(struct pipe_video_context *context,
                          struct pipe_context *pipe,
                          enum pipe_video_profile profile,
+                         enum pipe_video_entrypoint entrypoint,
                          enum pipe_video_chroma_format chroma_format,
                          unsigned width, unsigned height)
 {
@@ -580,6 +587,7 @@ vl_create_mpeg12_decoder(struct pipe_video_context *context,
 
    dec->base.context = context;
    dec->base.profile = profile;
+   dec->base.entrypoint = entrypoint;
    dec->base.chroma_format = chroma_format;
    dec->base.width = width;
    dec->base.height = height;
@@ -598,10 +606,16 @@ vl_create_mpeg12_decoder(struct pipe_video_context *context,
    dec->base.width = align(width, MACROBLOCK_WIDTH);
    dec->base.height = align(height, MACROBLOCK_HEIGHT);
 
-   if (!init_idct(dec, dec->base.width, dec->base.height))
-      goto error_idct;
+   /* TODO: Implement 422, 444 */
+   assert(dec->base.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420);
+   dec->empty_block_mask = &const_empty_block_mask_420;
 
-   if (!vl_mpeg12_mc_renderer_init(&dec->mc, dec->pipe, dec->base.width, dec->base.height))
+   if (entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
+      if (!init_idct(dec, dec->base.width, dec->base.height))
+         goto error_idct;
+
+   if (!vl_mpeg12_mc_renderer_init(&dec->mc, dec->pipe, dec->base.width, dec->base.height,
+                                   entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT ? 1.0f : SCALE_FACTOR_16_TO_9))
       goto error_mc;
 
    if (!init_pipe_state(dec))
@@ -613,8 +627,10 @@ error_pipe_state:
    vl_mpeg12_mc_renderer_cleanup(&dec->mc);
 
 error_mc:
-   vl_idct_cleanup(&dec->idct_y);
-   vl_idct_cleanup(&dec->idct_c);
+   if (entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
+      vl_idct_cleanup(&dec->idct_y);
+      vl_idct_cleanup(&dec->idct_c);
+   }
 
 error_idct:
    FREE(dec);
diff --git a/src/gallium/auxiliary/vl/vl_mpeg12_decoder.h b/src/gallium/auxiliary/vl/vl_mpeg12_decoder.h
index 69d649b..e90f8d3 100644
--- a/src/gallium/auxiliary/vl/vl_mpeg12_decoder.h
+++ b/src/gallium/auxiliary/vl/vl_mpeg12_decoder.h
@@ -64,7 +64,7 @@ struct vl_mpeg12_buffer
    struct vl_vertex_buffer vertex_stream;
 
    struct pipe_video_buffer *idct_source;
-   struct pipe_video_buffer *idct_2_mc;
+   struct pipe_video_buffer *mc_source;
 
    union
    {
@@ -87,6 +87,7 @@ struct pipe_video_decoder *
 vl_create_mpeg12_decoder(struct pipe_video_context *context,
                          struct pipe_context *pipe,
                          enum pipe_video_profile profile,
+                         enum pipe_video_entrypoint entrypoint,
                          enum pipe_video_chroma_format chroma_format,
                          unsigned width, unsigned height);
 
diff --git a/src/gallium/auxiliary/vl/vl_mpeg12_mc_renderer.c b/src/gallium/auxiliary/vl/vl_mpeg12_mc_renderer.c
index 912dea3..455aa52 100644
--- a/src/gallium/auxiliary/vl/vl_mpeg12_mc_renderer.c
+++ b/src/gallium/auxiliary/vl/vl_mpeg12_mc_renderer.c
@@ -216,7 +216,7 @@ calc_field(struct ureg_program *shader)
 }
 
 static struct ureg_dst
-fetch_ycbcr(struct vl_mpeg12_mc_renderer *r, struct ureg_program *shader, struct ureg_dst field)
+fetch_ycbcr(struct vl_mpeg12_mc_renderer *r, struct ureg_program *shader, struct ureg_dst field, float scale)
 {
    struct ureg_src tc[2], sampler;
    struct ureg_dst texel, t_tc;
@@ -250,6 +250,9 @@ fetch_ycbcr(struct vl_mpeg12_mc_renderer *r, struct ureg_program *shader, struct
    ureg_fixup_label(shader, label, ureg_get_instruction_number(shader));
    ureg_ENDIF(shader);
 
+   if (scale != 1.0f)
+      ureg_MUL(shader, texel, ureg_src(texel), ureg_imm1f(shader, scale));
+
    ureg_release_temporary(shader, t_tc);
 
    return texel;
@@ -308,7 +311,7 @@ fetch_ref(struct ureg_program *shader, struct ureg_dst field)
 }
 
 static void *
-create_frag_shader(struct vl_mpeg12_mc_renderer *r)
+create_frag_shader(struct vl_mpeg12_mc_renderer *r, float scale)
 {
    struct ureg_program *shader;
    struct ureg_dst result;
@@ -322,7 +325,7 @@ create_frag_shader(struct vl_mpeg12_mc_renderer *r)
    fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
 
    field = calc_field(shader);
-   texel = fetch_ycbcr(r, shader, field);
+   texel = fetch_ycbcr(r, shader, field, scale);
 
    result = fetch_ref(shader, field);
 
@@ -424,7 +427,8 @@ bool
 vl_mpeg12_mc_renderer_init(struct vl_mpeg12_mc_renderer *renderer,
                            struct pipe_context *pipe,
                            unsigned buffer_width,
-                           unsigned buffer_height)
+                           unsigned buffer_height,
+                           float scale)
 {
    struct pipe_resource tex_templ, *tex_dummy;
    struct pipe_sampler_view sampler_view;
@@ -445,7 +449,7 @@ vl_mpeg12_mc_renderer_init(struct vl_mpeg12_mc_renderer *renderer,
    if (!renderer->vs)
       goto error_vs_shaders;
 
-   renderer->fs = create_frag_shader(renderer);
+   renderer->fs = create_frag_shader(renderer, scale);
    if (!renderer->fs)
       goto error_fs_shaders;
 
diff --git a/src/gallium/auxiliary/vl/vl_mpeg12_mc_renderer.h b/src/gallium/auxiliary/vl/vl_mpeg12_mc_renderer.h
index 052d7d6..c3efda5 100644
--- a/src/gallium/auxiliary/vl/vl_mpeg12_mc_renderer.h
+++ b/src/gallium/auxiliary/vl/vl_mpeg12_mc_renderer.h
@@ -71,7 +71,8 @@ struct vl_mpeg12_mc_buffer
 bool vl_mpeg12_mc_renderer_init(struct vl_mpeg12_mc_renderer *renderer,
                                 struct pipe_context *pipe,
                                 unsigned picture_width,
-                                unsigned picture_height);
+                                unsigned picture_height,
+                                float scale);
 
 void vl_mpeg12_mc_renderer_cleanup(struct vl_mpeg12_mc_renderer *renderer);
 
diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h
index e9d4798..e3cc28b 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -514,6 +514,13 @@ enum pipe_video_profile
    PIPE_VIDEO_PROFILE_MPEG4_AVC_HIGH
 };
 
+enum pipe_video_entrypoint
+{
+   PIPE_VIDEO_ENTRYPOINT_UNKNOWN,
+   PIPE_VIDEO_ENTRYPOINT_BITSTREAM,
+   PIPE_VIDEO_ENTRYPOINT_IDCT,
+   PIPE_VIDEO_ENTRYPOINT_MC
+};
 
 /**
  * Composite query types
diff --git a/src/gallium/include/pipe/p_video_context.h b/src/gallium/include/pipe/p_video_context.h
index 33c64ba..21d0581 100644
--- a/src/gallium/include/pipe/p_video_context.h
+++ b/src/gallium/include/pipe/p_video_context.h
@@ -112,6 +112,7 @@ struct pipe_video_context
     */
    struct pipe_video_decoder *(*create_decoder)(struct pipe_video_context *context,
                                                 enum pipe_video_profile profile,
+                                                enum pipe_video_entrypoint entrypoint,
                                                 enum pipe_video_chroma_format chroma_format,
                                                 unsigned width, unsigned height);
 
@@ -137,6 +138,7 @@ struct pipe_video_decoder
    struct pipe_video_context *context;
 
    enum pipe_video_profile profile;
+   enum pipe_video_entrypoint entrypoint;
    enum pipe_video_chroma_format chroma_format;
    unsigned width;
    unsigned height;
diff --git a/src/gallium/state_trackers/xorg/xvmc/context.c b/src/gallium/state_trackers/xorg/xvmc/context.c
index 2690f80..6f136f2 100644
--- a/src/gallium/state_trackers/xorg/xvmc/context.c
+++ b/src/gallium/state_trackers/xorg/xvmc/context.c
@@ -209,7 +209,7 @@ Status XvMCCreateContext(Display *dpy, XvPortID port, int surface_type_id,
       XVMC_MSG(XVMC_ERR, "[XvMC] Cannot decode requested surface type. Unsupported chroma format.\n");
       return BadImplementation;
    }
-   if (mc_type != (XVMC_IDCT | XVMC_MOCOMP | XVMC_MPEG_2)) {
+   if ((mc_type & ~XVMC_IDCT) != (XVMC_MOCOMP | XVMC_MPEG_2)) {
       XVMC_MSG(XVMC_ERR, "[XvMC] Cannot decode requested surface type. Non-MPEG2/Mocomp/iDCT acceleration unsupported.\n");
       return BadImplementation;
    }
@@ -241,6 +241,9 @@ Status XvMCCreateContext(Display *dpy, XvPortID port, int surface_type_id,
 
    context_priv->decoder = vctx->vpipe->create_decoder(vctx->vpipe,
                                                        ProfileToPipe(mc_type),
+                                                       (mc_type & XVMC_IDCT) ?
+                                                          PIPE_VIDEO_ENTRYPOINT_IDCT :
+                                                          PIPE_VIDEO_ENTRYPOINT_MC,
                                                        FormatToPipe(chroma_format),
                                                        width, height);
 



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