Add VDPAU hardware accelerated decoding for MPEG1 and MPEG2 which can

be used by video players.

Original patch by NVIDIA corporation.

Originally committed as revision 16628 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 55 insertions, 0 deletions

diff --git a/libavcodec/vdpauvideo.c b/libavcodec/vdpauvideo.c
index e0cd627f97..b5b91cb2f3 100644
--- a/libavcodec/vdpauvideo.c
+++ b/libavcodec/vdpauvideo.c
@@ -177,4 +177,59 @@ void ff_vdpau_h264_picture_complete(MpegEncContext *s)
     render->bitstream_buffers_used = 0;
 }
 
+void ff_vdpau_mpeg_picture_complete(MpegEncContext *s, const uint8_t *buf,
+                                    int buf_size, int slice_count)
+{
+    struct vdpau_render_state * render, * last, * next;
+    int i;
+
+    render = (struct vdpau_render_state*)s->current_picture_ptr->data[0];
+    assert(render);
+
+    /* fill VdpPictureInfoMPEG1Or2 struct */
+    render->info.mpeg.picture_structure          = s->picture_structure;
+    render->info.mpeg.picture_coding_type        = s->pict_type;
+    render->info.mpeg.intra_dc_precision         = s->intra_dc_precision;
+    render->info.mpeg.frame_pred_frame_dct       = s->frame_pred_frame_dct;
+    render->info.mpeg.concealment_motion_vectors = s->concealment_motion_vectors;
+    render->info.mpeg.intra_vlc_format           = s->intra_vlc_format;
+    render->info.mpeg.alternate_scan             = s->alternate_scan;
+    render->info.mpeg.q_scale_type               = s->q_scale_type;
+    render->info.mpeg.top_field_first            = s->top_field_first;
+    render->info.mpeg.full_pel_forward_vector    = s->full_pel[0]; // MPEG-1 only.  Set 0 for MPEG-2
+    render->info.mpeg.full_pel_backward_vector   = s->full_pel[1]; // MPEG-1 only.  Set 0 for MPEG-2
+    render->info.mpeg.f_code[0][0]               = s->mpeg_f_code[0][0]; // For MPEG-1 fill both horiz. & vert.
+    render->info.mpeg.f_code[0][1]               = s->mpeg_f_code[0][1];
+    render->info.mpeg.f_code[1][0]               = s->mpeg_f_code[1][0];
+    render->info.mpeg.f_code[1][1]               = s->mpeg_f_code[1][1];
+    for (i = 0; i < 64; ++i) {
+        render->info.mpeg.intra_quantizer_matrix[i]     = s->intra_matrix[i];
+        render->info.mpeg.non_intra_quantizer_matrix[i] = s->inter_matrix[i];
+    }
+
+    render->info.mpeg.forward_reference          = VDP_INVALID_HANDLE;
+    render->info.mpeg.backward_reference         = VDP_INVALID_HANDLE;
+
+    switch(s->pict_type){
+    case  FF_B_TYPE:
+        next = (struct vdpau_render_state*)s->next_picture.data[0];
+        assert(next);
+        render->info.mpeg.backward_reference     = next->surface;
+        // no return here, going to set forward prediction
+    case  FF_P_TYPE:
+        last = (struct vdpau_render_state*)s->last_picture.data[0];
+        if (!last) // FIXME: Does this test make sense?
+            last = render; // predict second field from the first
+        render->info.mpeg.forward_reference      = last->surface;
+    }
+
+    ff_vdpau_add_data_chunk(s, buf, buf_size);
+
+    render->info.mpeg.slice_count                = slice_count;
+
+    if (slice_count)
+        ff_draw_horiz_band(s, 0, s->avctx->height);
+    render->bitstream_buffers_used               = 0;
+}
+
 /* @}*/