[Mesa-dev] [PATCH 1/2] vl: Remove decode buffers

Maarten Lankhorst m.b.lankhorst at gmail.com
Sat Dec 24 03:50:09 PST 2011


It's still a curiosity used by vl_mpeg12_bitstream only.

Signed-off-by: Maarten Lankhorst <m.b.lankhorst at gmail.com>

---

Version n+1: split up, and fixed to apply with new vl_vlc, although for testing
you might want to grab the 'vl: Fix inverted logic in vlc checks' first.

 src/gallium/auxiliary/vl/vl_decoder.c              |   13 ----
 src/gallium/auxiliary/vl/vl_decoder.h              |    6 --
 src/gallium/auxiliary/vl/vl_idct.c                 |   14 ++---
 src/gallium/auxiliary/vl/vl_mpeg12_bitstream.c     |    5 +-
 src/gallium/auxiliary/vl/vl_mpeg12_bitstream.h     |    3 +
 src/gallium/auxiliary/vl/vl_mpeg12_decoder.c       |   61 +++++++++-----------
 src/gallium/auxiliary/vl/vl_mpeg12_decoder.h       |   45 ++++++++-------
 src/gallium/drivers/nouveau/nouveau_video.c        |    2 -
 src/gallium/drivers/nvfx/nvfx_screen.c             |    2 -
 src/gallium/drivers/r300/r300_screen.c             |    2 -
 src/gallium/drivers/r600/r600_pipe.c               |    2 -
 src/gallium/drivers/softpipe/sp_screen.c           |    2 -
 src/gallium/include/pipe/p_video_decoder.h         |   19 +-----
 src/gallium/include/pipe/p_video_enums.h           |    3 -
 src/gallium/state_trackers/vdpau/decode.c          |   60 +++++---------------
 src/gallium/state_trackers/vdpau/vdpau_private.h   |    3 -
 src/gallium/state_trackers/xorg/xvmc/surface.c     |    6 --
 .../state_trackers/xorg/xvmc/xvmc_private.h        |    1 
 18 files changed, 78 insertions(+), 171 deletions(-)


diff --git a/src/gallium/auxiliary/vl/vl_decoder.c b/src/gallium/auxiliary/vl/vl_decoder.c
index 383e02d..da905a6 100644
--- a/src/gallium/auxiliary/vl/vl_decoder.c
+++ b/src/gallium/auxiliary/vl/vl_decoder.c
@@ -44,19 +44,6 @@ vl_profile_supported(struct pipe_screen *screen, enum pipe_video_profile profile
    }
 }
 
-unsigned
-vl_num_buffers_desired(struct pipe_screen *screen, enum pipe_video_profile profile)
-{
-   assert(screen);
-   switch (u_reduce_video_profile(profile)) {
-      case PIPE_VIDEO_CODEC_MPEG12:
-         return 4;
-
-      default:
-         return 1;
-   }
-}
-
 struct pipe_video_decoder *
 vl_create_decoder(struct pipe_context *pipe,
                   enum pipe_video_profile profile,
diff --git a/src/gallium/auxiliary/vl/vl_decoder.h b/src/gallium/auxiliary/vl/vl_decoder.h
index a997516..a7abe9c 100644
--- a/src/gallium/auxiliary/vl/vl_decoder.h
+++ b/src/gallium/auxiliary/vl/vl_decoder.h
@@ -38,12 +38,6 @@ bool
 vl_profile_supported(struct pipe_screen *screen, enum pipe_video_profile profile);
 
 /**
- * the desired number of buffers for optimal operation
- */
-unsigned
-vl_num_buffers_desired(struct pipe_screen *screen, enum pipe_video_profile profile);
-
-/**
  * standard implementation of pipe->create_video_decoder
  */
 struct pipe_video_decoder *
diff --git a/src/gallium/auxiliary/vl/vl_idct.c b/src/gallium/auxiliary/vl/vl_idct.c
index a2b3537..8394542 100644
--- a/src/gallium/auxiliary/vl/vl_idct.c
+++ b/src/gallium/auxiliary/vl/vl_idct.c
@@ -614,9 +614,9 @@ init_source(struct vl_idct *idct, struct vl_idct_buffer *buffer)
 }
 
 static void
-cleanup_source(struct vl_idct *idct, struct vl_idct_buffer *buffer)
+cleanup_source(struct vl_idct_buffer *buffer)
 {
-   assert(idct && buffer);
+   assert(buffer);
 
    pipe_surface_reference(&buffer->fb_state_mismatch.cbufs[0], NULL);
 
@@ -665,13 +665,13 @@ error_surfaces:
 }
 
 static void
-cleanup_intermediate(struct vl_idct *idct, struct vl_idct_buffer *buffer)
+cleanup_intermediate(struct vl_idct_buffer *buffer)
 {
    unsigned i;
 
-   assert(idct && buffer);
+   assert(buffer);
 
-   for(i = 0; i < idct->nr_of_render_targets; ++i)
+   for(i = 0; i < buffer->fb_state.nr_cbufs; ++i)
       pipe_surface_reference(&buffer->fb_state.cbufs[i], NULL);
 
    pipe_sampler_view_reference(&buffer->sampler_views.individual.intermediate, NULL);
@@ -823,8 +823,8 @@ vl_idct_cleanup_buffer(struct vl_idct_buffer *buffer)
 {
    assert(buffer);
 
-   cleanup_source(buffer->idct, buffer);
-   cleanup_intermediate(buffer->idct, buffer);
+   cleanup_source(buffer);
+   cleanup_intermediate(buffer);
 
    pipe_sampler_view_reference(&buffer->sampler_views.individual.matrix, NULL);
    pipe_sampler_view_reference(&buffer->sampler_views.individual.transpose, NULL);
diff --git a/src/gallium/auxiliary/vl/vl_mpeg12_bitstream.c b/src/gallium/auxiliary/vl/vl_mpeg12_bitstream.c
index 7e20d71..559d6c7 100644
--- a/src/gallium/auxiliary/vl/vl_mpeg12_bitstream.c
+++ b/src/gallium/auxiliary/vl/vl_mpeg12_bitstream.c
@@ -958,11 +958,12 @@ vl_mpg12_bs_set_picture_desc(struct vl_mpg12_bs *bs, struct pipe_mpeg12_picture_
 }
 
 void
-vl_mpg12_bs_decode(struct vl_mpg12_bs *bs, unsigned num_bytes, const uint8_t *buffer)
+vl_mpg12_bs_decode(struct vl_mpg12_bs *bs, unsigned n,
+                   const unsigned *lens, const void* const*buffer)
 {
    assert(bs);
 
-   vl_vlc_init(&bs->vlc, 1, (const void * const *)&buffer, &num_bytes);
+   vl_vlc_init(&bs->vlc, n, buffer, lens);
    while (vl_vlc_bits_left(&bs->vlc) > 32) {
       uint32_t code = vl_vlc_peekbits(&bs->vlc, 32);
 
diff --git a/src/gallium/auxiliary/vl/vl_mpeg12_bitstream.h b/src/gallium/auxiliary/vl/vl_mpeg12_bitstream.h
index c3f14a1..16c99e4 100644
--- a/src/gallium/auxiliary/vl/vl_mpeg12_bitstream.h
+++ b/src/gallium/auxiliary/vl/vl_mpeg12_bitstream.h
@@ -49,6 +49,7 @@ void
 vl_mpg12_bs_set_picture_desc(struct vl_mpg12_bs *bs, struct pipe_mpeg12_picture_desc *picture);
 
 void
-vl_mpg12_bs_decode(struct vl_mpg12_bs *bs, unsigned num_bytes, const uint8_t *buffer);
+vl_mpg12_bs_decode(struct vl_mpg12_bs *bs, unsigned n,
+                   const unsigned *lens, const void* const*buffer);
 
 #endif /* vl_mpeg12_bitstream_h */
diff --git a/src/gallium/auxiliary/vl/vl_mpeg12_decoder.c b/src/gallium/auxiliary/vl/vl_mpeg12_decoder.c
index 2442d78..0896270 100644
--- a/src/gallium/auxiliary/vl/vl_mpeg12_decoder.c
+++ b/src/gallium/auxiliary/vl/vl_mpeg12_decoder.c
@@ -48,6 +48,9 @@ struct format_config {
    float mc_scale;
 };
 
+static void
+vl_mpeg12_cleanup_buffer(struct pipe_video_decoder *decoder, void *buffer);
+
 static const struct format_config bitstream_format_config[] = {
 //   { PIPE_FORMAT_R16_SSCALED, PIPE_FORMAT_R16G16B16A16_SSCALED, PIPE_FORMAT_R16G16B16A16_FLOAT, 1.0f, SCALE_FACTOR_SSCALED },
 //   { PIPE_FORMAT_R16_SSCALED, PIPE_FORMAT_R16G16B16A16_SSCALED, PIPE_FORMAT_R16G16B16A16_SSCALED, 1.0f, SCALE_FACTOR_SSCALED },
@@ -386,8 +389,11 @@ static void
 vl_mpeg12_destroy(struct pipe_video_decoder *decoder)
 {
    struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder*)decoder;
+   unsigned i;
 
    assert(decoder);
+   for (i = 0; i < Elements(dec->buffers); ++i)
+      vl_mpeg12_cleanup_buffer(decoder, &dec->buffers[i]);
 
    /* Asserted in softpipe_delete_fs_state() for some reason */
    dec->base.context->bind_vs_state(dec->base.context, NULL);
@@ -423,17 +429,12 @@ vl_mpeg12_destroy(struct pipe_video_decoder *decoder)
 }
 
 static void *
-vl_mpeg12_create_buffer(struct pipe_video_decoder *decoder)
+vl_mpeg12_init_buffer(struct pipe_video_decoder *decoder, struct vl_mpeg12_buffer *buffer)
 {
    struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder*)decoder;
-   struct vl_mpeg12_buffer *buffer;
 
    assert(dec);
 
-   buffer = CALLOC_STRUCT(vl_mpeg12_buffer);
-   if (buffer == NULL)
-      return NULL;
-
    if (!vl_vb_init(&buffer->vertex_stream, dec->base.context,
                    dec->base.width / MACROBLOCK_WIDTH,
                    dec->base.height / MACROBLOCK_HEIGHT))
@@ -465,12 +466,11 @@ error_mc:
    vl_vb_cleanup(&buffer->vertex_stream);
 
 error_vertex_buffer:
-   FREE(buffer);
    return NULL;
 }
 
 static void
-vl_mpeg12_destroy_buffer(struct pipe_video_decoder *decoder, void *buffer)
+vl_mpeg12_cleanup_buffer(struct pipe_video_decoder *decoder, void *buffer)
 {
    struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder*)decoder;
    struct vl_mpeg12_buffer *buf = buffer;
@@ -485,18 +485,6 @@ vl_mpeg12_destroy_buffer(struct pipe_video_decoder *decoder, void *buffer)
    cleanup_mc_buffer(buf);
 
    vl_vb_cleanup(&buf->vertex_stream);
-
-   FREE(buf);
-}
-
-static void
-vl_mpeg12_set_decode_buffer(struct pipe_video_decoder *decoder, void *buffer)
-{
-   struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder *)decoder;
-
-   assert(dec && buffer);
-
-   dec->current_buffer = buffer;
 }
 
 static void
@@ -576,8 +564,8 @@ vl_mpeg12_begin_frame(struct pipe_video_decoder *decoder)
 
    assert(dec);
 
-   buf = dec->current_buffer;
-   assert(buf);
+   dec->current_buffer = (dec->current_buffer + 1) % Elements(dec->buffers);
+   buf = &dec->buffers[dec->current_buffer];
 
    if (dec->base.entrypoint == PIPE_VIDEO_ENTRYPOINT_BITSTREAM)
       dec->intra_matrix[0] = 1 << (7 - dec->picture_desc.intra_dc_precision);
@@ -635,8 +623,7 @@ vl_mpeg12_decode_macroblock(struct pipe_video_decoder *decoder,
    assert(dec && dec->current_buffer);
    assert(macroblocks && macroblocks->codec == PIPE_VIDEO_CODEC_MPEG12);
 
-   buf = dec->current_buffer;
-   assert(buf);
+   buf = &dec->buffers[dec->current_buffer];
 
    for (; num_macroblocks > 0; --num_macroblocks) {
       unsigned mb_addr = mb->y * dec->width_in_macroblocks + mb->x;
@@ -689,24 +676,23 @@ vl_mpeg12_decode_macroblock(struct pipe_video_decoder *decoder,
 }
 
 static void
-vl_mpeg12_decode_bitstream(struct pipe_video_decoder *decoder,
-                           unsigned num_bytes, const void *data)
+vl_mpeg12_decode_bitstream(struct pipe_video_decoder *decoder, unsigned n,
+                           const unsigned *lens, const void *const*data)
 {
    struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder *)decoder;
    struct vl_mpeg12_buffer *buf;
    
    unsigned i;
 
-   assert(dec && dec->current_buffer);
+   assert(dec);
 
-   buf = dec->current_buffer;
-   assert(buf);
+   buf = &dec->buffers[dec->current_buffer];
 
    for (i = 0; i < VL_MAX_PLANES; ++i)
       vl_zscan_set_layout(&buf->zscan[i], dec->picture_desc.alternate_scan ?
                           dec->zscan_alternate : dec->zscan_normal);
 
-   vl_mpg12_bs_decode(&buf->bs, num_bytes, data);
+   vl_mpg12_bs_decode(&buf->bs, n, lens, data);
 }
 
 static void
@@ -722,7 +708,7 @@ vl_mpeg12_end_frame(struct pipe_video_decoder *decoder)
 
    assert(dec && dec->current_buffer);
 
-   buf = dec->current_buffer;
+   buf = &dec->buffers[dec->current_buffer];
 
    vl_vb_unmap(&buf->vertex_stream, dec->base.context);
 
@@ -1039,6 +1025,7 @@ vl_create_mpeg12_decoder(struct pipe_context *context,
 {
    const unsigned block_size_pixels = BLOCK_WIDTH * BLOCK_HEIGHT;
    const struct format_config *format_config;
+   unsigned i = 0;
    struct vl_mpeg12_decoder *dec;
 
    assert(u_reduce_video_profile(profile) == PIPE_VIDEO_CODEC_MPEG12);
@@ -1057,9 +1044,6 @@ vl_create_mpeg12_decoder(struct pipe_context *context,
    dec->base.max_references = max_references;
 
    dec->base.destroy = vl_mpeg12_destroy;
-   dec->base.create_buffer = vl_mpeg12_create_buffer;
-   dec->base.destroy_buffer = vl_mpeg12_destroy_buffer;
-   dec->base.set_decode_buffer = vl_mpeg12_set_decode_buffer;
    dec->base.set_picture_parameters = vl_mpeg12_set_picture_parameters;
    dec->base.set_quant_matrix = vl_mpeg12_set_quant_matrix;
    dec->base.set_decode_target = vl_mpeg12_set_decode_target;
@@ -1152,9 +1136,16 @@ vl_create_mpeg12_decoder(struct pipe_context *context,
 
    memset(dec->intra_matrix, 0x10, 64);
    memset(dec->non_intra_matrix, 0x10, 64);
-
+   for (i = 0; i < Elements(dec->buffers); ++i) {
+      if (!vl_mpeg12_init_buffer(&dec->base, &dec->buffers[i]))
+         goto error_cleanup_buffer;
+   }
    return &dec->base;
 
+error_cleanup_buffer:
+   for (; i > 0; --i)
+      vl_mpeg12_cleanup_buffer(&dec->base, &dec->buffers[i-1]);
+
 error_pipe_state:
    vl_mc_cleanup(&dec->mc_c);
 
diff --git a/src/gallium/auxiliary/vl/vl_mpeg12_decoder.h b/src/gallium/auxiliary/vl/vl_mpeg12_decoder.h
index 817c1ff..c7fd3fc 100644
--- a/src/gallium/auxiliary/vl/vl_mpeg12_decoder.h
+++ b/src/gallium/auxiliary/vl/vl_mpeg12_decoder.h
@@ -41,6 +41,27 @@
 struct pipe_screen;
 struct pipe_context;
 
+struct vl_mpeg12_buffer
+{
+   struct vl_vertex_buffer vertex_stream;
+
+   unsigned block_num;
+   unsigned num_ycbcr_blocks[3];
+
+   struct pipe_sampler_view *zscan_source;
+
+   struct vl_mpg12_bs bs;
+   struct vl_zscan_buffer zscan[VL_MAX_PLANES];
+   struct vl_idct_buffer idct[VL_MAX_PLANES];
+   struct vl_mc_buffer mc[VL_MAX_PLANES];
+
+   struct pipe_transfer *tex_transfer;
+   short *texels;
+
+   struct vl_ycbcr_block *ycbcr_stream[VL_MAX_PLANES];
+   struct vl_motionvector *mv_stream[VL_MAX_REF_FRAMES];
+};
+
 struct vl_mpeg12_decoder
 {
    struct pipe_video_decoder base;
@@ -74,7 +95,8 @@ struct vl_mpeg12_decoder
 
    void *dsa;
 
-   struct vl_mpeg12_buffer *current_buffer;
+   unsigned current_buffer;
+   struct vl_mpeg12_buffer buffers[4];
    struct pipe_mpeg12_picture_desc picture_desc;
    uint8_t intra_matrix[64];
    uint8_t non_intra_matrix[64];
@@ -82,27 +104,6 @@ struct vl_mpeg12_decoder
    struct pipe_surface *target_surfaces[VL_MAX_PLANES];
 };
 
-struct vl_mpeg12_buffer
-{
-   struct vl_vertex_buffer vertex_stream;
-
-   unsigned block_num;
-   unsigned num_ycbcr_blocks[3];
-
-   struct pipe_sampler_view *zscan_source;
-
-   struct vl_mpg12_bs bs;
-   struct vl_zscan_buffer zscan[VL_MAX_PLANES];
-   struct vl_idct_buffer idct[VL_MAX_PLANES];
-   struct vl_mc_buffer mc[VL_MAX_PLANES];
-
-   struct pipe_transfer *tex_transfer;
-   short *texels;
-
-   struct vl_ycbcr_block *ycbcr_stream[VL_MAX_PLANES];
-   struct vl_motionvector *mv_stream[VL_MAX_REF_FRAMES];
-};
-
 /**
  * creates a shader based mpeg12 decoder
  */
diff --git a/src/gallium/drivers/nouveau/nouveau_video.c b/src/gallium/drivers/nouveau/nouveau_video.c
index a442537..3345f82 100644
--- a/src/gallium/drivers/nouveau/nouveau_video.c
+++ b/src/gallium/drivers/nouveau/nouveau_video.c
@@ -851,8 +851,6 @@ nouveau_screen_get_video_param(struct pipe_screen *pscreen,
    case PIPE_VIDEO_CAP_MAX_WIDTH:
    case PIPE_VIDEO_CAP_MAX_HEIGHT:
       return vl_video_buffer_max_size(pscreen);
-   case PIPE_VIDEO_CAP_NUM_BUFFERS_DESIRED:
-      return vl_num_buffers_desired(pscreen, profile);
    default:
       debug_printf("unknown video param: %d\n", param);
       return 0;
diff --git a/src/gallium/drivers/nvfx/nvfx_screen.c b/src/gallium/drivers/nvfx/nvfx_screen.c
index 960cd88..abf4937 100644
--- a/src/gallium/drivers/nvfx/nvfx_screen.c
+++ b/src/gallium/drivers/nvfx/nvfx_screen.c
@@ -226,8 +226,6 @@ nvfx_screen_get_video_param(struct pipe_screen *screen,
 	case PIPE_VIDEO_CAP_MAX_WIDTH:
 	case PIPE_VIDEO_CAP_MAX_HEIGHT:
 		return vl_video_buffer_max_size(screen);
-	case PIPE_VIDEO_CAP_NUM_BUFFERS_DESIRED:
-		return vl_num_buffers_desired(screen, profile);
 	default:
 		return 0;
 	}
diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c
index d1b8031..9ca5420 100644
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -308,8 +308,6 @@ static int r300_get_video_param(struct pipe_screen *screen,
       case PIPE_VIDEO_CAP_MAX_WIDTH:
       case PIPE_VIDEO_CAP_MAX_HEIGHT:
          return vl_video_buffer_max_size(screen);
-      case PIPE_VIDEO_CAP_NUM_BUFFERS_DESIRED:
-         return vl_num_buffers_desired(screen, profile);
       default:
          return 0;
    }
diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index 036f18f..f13c9e5 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -542,8 +542,6 @@ static int r600_get_video_param(struct pipe_screen *screen,
 	case PIPE_VIDEO_CAP_MAX_WIDTH:
 	case PIPE_VIDEO_CAP_MAX_HEIGHT:
 		return vl_video_buffer_max_size(screen);
-	case PIPE_VIDEO_CAP_NUM_BUFFERS_DESIRED:
-		return vl_num_buffers_desired(screen, profile);
 	default:
 		return 0;
 	}
diff --git a/src/gallium/drivers/softpipe/sp_screen.c b/src/gallium/drivers/softpipe/sp_screen.c
index 49e8626..b7e58b3 100644
--- a/src/gallium/drivers/softpipe/sp_screen.c
+++ b/src/gallium/drivers/softpipe/sp_screen.c
@@ -188,8 +188,6 @@ softpipe_get_video_param(struct pipe_screen *screen,
    case PIPE_VIDEO_CAP_MAX_WIDTH:
    case PIPE_VIDEO_CAP_MAX_HEIGHT:
       return vl_video_buffer_max_size(screen);
-   case PIPE_VIDEO_CAP_NUM_BUFFERS_DESIRED:
-      return vl_num_buffers_desired(screen, profile);
    default:
       return 0;
    }
diff --git a/src/gallium/include/pipe/p_video_decoder.h b/src/gallium/include/pipe/p_video_decoder.h
index 40b7dcd..847f20f 100644
--- a/src/gallium/include/pipe/p_video_decoder.h
+++ b/src/gallium/include/pipe/p_video_decoder.h
@@ -60,21 +60,6 @@ struct pipe_video_decoder
    void (*destroy)(struct pipe_video_decoder *decoder);
 
    /**
-    * Creates a decoder buffer
-    */
-   void *(*create_buffer)(struct pipe_video_decoder *decoder);
-
-   /**
-    * Destroys a decoder buffer
-    */
-   void (*destroy_buffer)(struct pipe_video_decoder *decoder, void *buffer);
-
-   /**
-    * set the current decoder buffer
-    */
-   void (*set_decode_buffer)(struct pipe_video_decoder *decoder, void *buffer);
-
-   /**
     * set the picture parameters for the next frame
     * only used for bitstream decoding
     */
@@ -115,8 +100,8 @@ struct pipe_video_decoder
    /**
     * decode a bitstream
     */
-   void (*decode_bitstream)(struct pipe_video_decoder *decoder,
-                            unsigned num_bytes, const void *data);
+   void (*decode_bitstream)(struct pipe_video_decoder *decoder, unsigned num_buffers,
+                            unsigned const *num_bytes, const void *const *data);
 
    /**
     * end decoding of the current frame
diff --git a/src/gallium/include/pipe/p_video_enums.h b/src/gallium/include/pipe/p_video_enums.h
index ea25a25..1378606 100644
--- a/src/gallium/include/pipe/p_video_enums.h
+++ b/src/gallium/include/pipe/p_video_enums.h
@@ -50,8 +50,7 @@ enum pipe_video_cap
    PIPE_VIDEO_CAP_SUPPORTED = 0,
    PIPE_VIDEO_CAP_NPOT_TEXTURES = 1,
    PIPE_VIDEO_CAP_MAX_WIDTH = 2,
-   PIPE_VIDEO_CAP_MAX_HEIGHT = 3,
-   PIPE_VIDEO_CAP_NUM_BUFFERS_DESIRED = 4
+   PIPE_VIDEO_CAP_MAX_HEIGHT = 3
 };
 
 enum pipe_video_codec
diff --git a/src/gallium/state_trackers/vdpau/decode.c b/src/gallium/state_trackers/vdpau/decode.c
index 47212e3..5fff85d 100644
--- a/src/gallium/state_trackers/vdpau/decode.c
+++ b/src/gallium/state_trackers/vdpau/decode.c
@@ -48,7 +48,6 @@ vlVdpDecoderCreate(VdpDevice device,
    vlVdpDevice *dev;
    vlVdpDecoder *vldecoder;
    VdpStatus ret;
-   unsigned i;
    bool supported;
 
    VDPAU_MSG(VDPAU_TRACE, "[VDPAU] Creating decoder\n");
@@ -98,25 +97,6 @@ vlVdpDecoderCreate(VdpDevice device,
       goto error_decoder;
    }
 
-   vldecoder->num_buffers = pipe->screen->get_video_param
-   (
-      pipe->screen, p_profile,
-      PIPE_VIDEO_CAP_NUM_BUFFERS_DESIRED
-   );
-   vldecoder->cur_buffer = 0;
-
-   vldecoder->buffers = CALLOC(vldecoder->num_buffers, sizeof(void*));
-   if (!vldecoder->buffers)
-         goto error_alloc_buffers;
-
-   for (i = 0; i < vldecoder->num_buffers; ++i) {
-      vldecoder->buffers[i] = vldecoder->decoder->create_buffer(vldecoder->decoder);
-      if (!vldecoder->buffers[i]) {
-         ret = VDP_STATUS_ERROR;
-         goto error_create_buffers;
-      }
-   }
-
    *decoder = vlAddDataHTAB(vldecoder);
    if (*decoder == 0) {
       ret = VDP_STATUS_ERROR;
@@ -128,16 +108,6 @@ vlVdpDecoderCreate(VdpDevice device,
    return VDP_STATUS_OK;
 
 error_handle:
-error_create_buffers:
-
-   for (i = 0; i < vldecoder->num_buffers; ++i)
-      if (vldecoder->buffers[i])
-         vldecoder->decoder->destroy_buffer(vldecoder->decoder, vldecoder->buffers[i]);
-
-   FREE(vldecoder->buffers);
-
-error_alloc_buffers:
-
    vldecoder->decoder->destroy(vldecoder->decoder);
 
 error_decoder:
@@ -152,7 +122,6 @@ VdpStatus
 vlVdpDecoderDestroy(VdpDecoder decoder)
 {
    vlVdpDecoder *vldecoder;
-   unsigned i;
 
    VDPAU_MSG(VDPAU_TRACE, "[VDPAU] Destroying decoder\n");
 
@@ -160,12 +129,6 @@ vlVdpDecoderDestroy(VdpDecoder decoder)
    if (!vldecoder)
       return VDP_STATUS_INVALID_HANDLE;
 
-   for (i = 0; i < vldecoder->num_buffers; ++i)
-      if (vldecoder->buffers[i])
-         vldecoder->decoder->destroy_buffer(vldecoder->decoder, vldecoder->buffers[i]);
-
-   FREE(vldecoder->buffers);
-
    vldecoder->decoder->destroy(vldecoder->decoder);
 
    FREE(vldecoder);
@@ -412,10 +375,6 @@ vlVdpDecoderRender(VdpDecoder decoder,
       // TODO: Recreate decoder with correct chroma
       return VDP_STATUS_INVALID_CHROMA_TYPE;
 
-   ++vldecoder->cur_buffer;
-   vldecoder->cur_buffer %= vldecoder->num_buffers;
-
-   dec->set_decode_buffer(dec, vldecoder->buffers[vldecoder->cur_buffer]);
    dec->set_decode_target(dec, vlsurf->video_buffer);
 
    switch (u_reduce_video_profile(dec->profile)) {
@@ -434,10 +393,19 @@ vlVdpDecoderRender(VdpDecoder decoder,
    if (ret != VDP_STATUS_OK)
       return ret;
 
-   dec->begin_frame(dec);
-   for (i = 0; i < bitstream_buffer_count; ++i)
-      dec->decode_bitstream(dec, bitstream_buffers[i].bitstream_bytes,
-                                           bitstream_buffers[i].bitstream);
-   dec->end_frame(dec);
+   if (bitstream_buffer_count) {
+      void const *data[bitstream_buffer_count];
+      uint32_t sizes[bitstream_buffer_count];
+      for (i = 0; i < bitstream_buffer_count; ++i) {
+         data[i] = bitstream_buffers[i].bitstream;
+         sizes[i] = bitstream_buffers[i].bitstream_bytes;
+      }
+      dec->begin_frame(dec);
+      dec->decode_bitstream(dec,
+                            bitstream_buffer_count,
+                            sizes, data);
+      dec->end_frame(dec);
+   } else
+      return VDP_STATUS_INVALID_VALUE;
    return ret;
 }
diff --git a/src/gallium/state_trackers/vdpau/vdpau_private.h b/src/gallium/state_trackers/vdpau/vdpau_private.h
index 84c5b82..1bbbaa9 100644
--- a/src/gallium/state_trackers/vdpau/vdpau_private.h
+++ b/src/gallium/state_trackers/vdpau/vdpau_private.h
@@ -335,9 +335,6 @@ typedef struct
 {
    vlVdpDevice *device;
    struct pipe_video_decoder *decoder;
-   unsigned num_buffers;
-   void **buffers;
-   unsigned cur_buffer;
 } vlVdpDecoder;
 
 typedef uint32_t vlHandle;
diff --git a/src/gallium/state_trackers/xorg/xvmc/surface.c b/src/gallium/state_trackers/xorg/xvmc/surface.c
index bb7ba1e..b4447c4 100644
--- a/src/gallium/state_trackers/xorg/xvmc/surface.c
+++ b/src/gallium/state_trackers/xorg/xvmc/surface.c
@@ -114,8 +114,6 @@ SetDecoderStatus(XvMCSurfacePrivate *surface)
    context_priv = surface->context->privData;
    decoder = context_priv->decoder;
 
-   if (surface->decode_buffer)
-      decoder->set_decode_buffer(decoder, surface->decode_buffer);
    decoder->set_decode_target(decoder, surface->video_buffer);
 
    for (i = 0; i < 2; ++i) {
@@ -186,8 +184,6 @@ Status XvMCCreateSurface(Display *dpy, XvMCContext *context, XvMCSurface *surfac
    if (!surface_priv)
       return BadAlloc;
 
-   if (context_priv->decoder->create_buffer)
-      surface_priv->decode_buffer = context_priv->decoder->create_buffer(context_priv->decoder);
    surface_priv->video_buffer = pipe->create_video_buffer
    (
       pipe, PIPE_FORMAT_NV12, context_priv->decoder->chroma_format,
@@ -504,8 +500,6 @@ Status XvMCDestroySurface(Display *dpy, XvMCSurface *surface)
       SetDecoderStatus(surface_priv);
       context_priv->decoder->end_frame(context_priv->decoder);
    }
-   if (surface_priv->decode_buffer)
-      context_priv->decoder->destroy_buffer(context_priv->decoder, surface_priv->decode_buffer);
    surface_priv->video_buffer->destroy(surface_priv->video_buffer);
    FREE(surface_priv);
    surface->privData = NULL;
diff --git a/src/gallium/state_trackers/xorg/xvmc/xvmc_private.h b/src/gallium/state_trackers/xorg/xvmc/xvmc_private.h
index 5656c65..daddba5 100644
--- a/src/gallium/state_trackers/xorg/xvmc/xvmc_private.h
+++ b/src/gallium/state_trackers/xorg/xvmc/xvmc_private.h
@@ -71,7 +71,6 @@ typedef struct
 
 typedef struct
 {
-   void *decode_buffer;
    struct pipe_video_buffer *video_buffer;
 
    /* nonzero if this picture is already being decoded */




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