Deprecate obsolete XvMC hardware decoding support

XvMC has long ago been superseded by newer acceleration APIs, such as
VDPAU, and few downstreams still support it. Furthermore XvMC is not
implemented within the hwaccel framework, but requires its own specific
code in the MPEG-1/2 decoder, which is a maintenance burden.

1 files changed, 37 insertions, 21 deletions

diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index d609b54..48a7320 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -30,6 +30,7 @@
 #include "libavutil/attributes.h"
 #include "libavutil/avassert.h"
 #include "libavutil/imgutils.h"
+#include "libavutil/internal.h"
 #include "avcodec.h"
 #include "dsputil.h"
 #include "internal.h"
@@ -1671,8 +1672,12 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
         update_noise_reduction(s);
     }
 
+#if FF_API_XVMC
+FF_DISABLE_DEPRECATION_WARNINGS
     if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration)
         return ff_xvmc_field_start(s, avctx);
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif /* FF_API_XVMC */
 
     return 0;
 }
@@ -1682,31 +1687,37 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
 void ff_MPV_frame_end(MpegEncContext *s)
 {
     int i;
+
+#if FF_API_XVMC
+FF_DISABLE_DEPRECATION_WARNINGS
     /* redraw edges for the frame if decoding didn't complete */
     // just to make sure that all data is rendered.
     if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration) {
         ff_xvmc_field_end(s);
-   } else if ((s->er.error_count || s->encoding) &&
-              !s->avctx->hwaccel &&
-              s->unrestricted_mv &&
-              s->current_picture.reference &&
-              !s->intra_only &&
-              !(s->flags & CODEC_FLAG_EMU_EDGE)) {
-       const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
-       int hshift = desc->log2_chroma_w;
-       int vshift = desc->log2_chroma_h;
-       s->dsp.draw_edges(s->current_picture.f.data[0], s->linesize,
-                         s->h_edge_pos, s->v_edge_pos,
-                         EDGE_WIDTH, EDGE_WIDTH,
-                         EDGE_TOP | EDGE_BOTTOM);
-       s->dsp.draw_edges(s->current_picture.f.data[1], s->uvlinesize,
-                         s->h_edge_pos >> hshift, s->v_edge_pos >> vshift,
-                         EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
-                         EDGE_TOP | EDGE_BOTTOM);
-       s->dsp.draw_edges(s->current_picture.f.data[2], s->uvlinesize,
-                         s->h_edge_pos >> hshift, s->v_edge_pos >> vshift,
-                         EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
-                         EDGE_TOP | EDGE_BOTTOM);
+    } else
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif /* FF_API_XVMC */
+    if ((s->er.error_count || s->encoding) &&
+        !s->avctx->hwaccel &&
+        s->unrestricted_mv &&
+        s->current_picture.reference &&
+        !s->intra_only &&
+        !(s->flags & CODEC_FLAG_EMU_EDGE)) {
+        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
+        int hshift = desc->log2_chroma_w;
+        int vshift = desc->log2_chroma_h;
+        s->dsp.draw_edges(s->current_picture.f.data[0], s->linesize,
+                          s->h_edge_pos, s->v_edge_pos,
+                          EDGE_WIDTH, EDGE_WIDTH,
+                          EDGE_TOP | EDGE_BOTTOM);
+        s->dsp.draw_edges(s->current_picture.f.data[1], s->uvlinesize,
+                          s->h_edge_pos >> hshift, s->v_edge_pos >> vshift,
+                          EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
+                          EDGE_TOP | EDGE_BOTTOM);
+        s->dsp.draw_edges(s->current_picture.f.data[2], s->uvlinesize,
+                          s->h_edge_pos >> hshift, s->v_edge_pos >> vshift,
+                          EDGE_WIDTH >> hshift, EDGE_WIDTH >> vshift,
+                          EDGE_TOP | EDGE_BOTTOM);
     }
 
     emms_c();
@@ -1959,10 +1970,15 @@ void MPV_decode_mb_internal(MpegEncContext *s, int16_t block[12][64],
                             int is_mpeg12)
 {
     const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
+
+#if FF_API_XVMC
+FF_DISABLE_DEPRECATION_WARNINGS
     if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration){
         ff_xvmc_decode_mb(s);//xvmc uses pblocks
         return;
     }
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif /* FF_API_XVMC */
 
     if(s->avctx->debug&FF_DEBUG_DCT_COEFF) {
        /* print DCT coefficients */