libvpx: Support setting color range for vp9.

Pass through color range to vp9 encoder. Parse color range in libvpxdec.c.
Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: Sasi Inguva <isasi@google.com>
Signed-off-by: James Almer <jamrial@gmail.com>

libavcodec/libvpxdec.c

@@ -69,6 +69,12 @@ static int set_pix_fmt(AVCodecContext *avctx, struct vpx_image *img)
         AVCOL_SPC_SMPTE240M, AVCOL_SPC_BT2020_NCL, AVCOL_SPC_RESERVED, AVCOL_SPC_RGB,
     };
     avctx->colorspace = colorspaces[img->cs];
+#if VPX_IMAGE_ABI_VERSION >= 4
+    static const enum AVColorRange color_ranges[] = {
+        AVCOL_RANGE_MPEG, AVCOL_RANGE_JPEG
+    };
+    avctx->color_range = color_ranges[img->range];
+#endif
 #endif
     if (avctx->codec_id == AV_CODEC_ID_VP8 && img->fmt != VPX_IMG_FMT_I420)
         return AVERROR_INVALIDDATA;

libavcodec/libvpxenc.c

@@ -125,6 +125,9 @@ static const char *const ctlidstr[] = {
 #if VPX_ENCODER_ABI_VERSION > 8
     [VP9E_SET_COLOR_SPACE]             = "VP9E_SET_COLOR_SPACE",
 #endif
+#if VPX_ENCODER_ABI_VERSION >= 11
+    [VP9E_SET_COLOR_RANGE]             = "VP9E_SET_COLOR_RANGE",
+#endif
 #endif
 };
 
@@ -368,6 +371,24 @@ static void set_colorspace(AVCodecContext *avctx)
     codecctl_int(avctx, VP9E_SET_COLOR_SPACE, vpx_cs);
 }
 #endif
+
+#if VPX_ENCODER_ABI_VERSION >= 11
+static void set_color_range(AVCodecContext *avctx)
+{
+    enum vpx_color_range vpx_cr;
+    switch (avctx->color_range) {
+    case AVCOL_RANGE_UNSPECIFIED:
+    case AVCOL_RANGE_MPEG:       vpx_cr = VPX_CR_STUDIO_RANGE; break;
+    case AVCOL_RANGE_JPEG:       vpx_cr = VPX_CR_FULL_RANGE;   break;
+    default:
+        av_log(avctx, AV_LOG_WARNING, "Unsupported color range (%d)\n",
+               avctx->color_range);
+        return;
+    }
+
+    codecctl_int(avctx, VP9E_SET_COLOR_RANGE, vpx_cr);
+}
+#endif
 #endif
 
 static av_cold int vpx_init(AVCodecContext *avctx,
@@ -616,6 +637,9 @@ static av_cold int vpx_init(AVCodecContext *avctx,
             codecctl_int(avctx, VP9E_SET_AQ_MODE, ctx->aq_mode);
 #if VPX_ENCODER_ABI_VERSION > 8
         set_colorspace(avctx);
+#endif
+#if VPX_ENCODER_ABI_VERSION >= 11
+        set_color_range(avctx);
 #endif
     }
 #endif