+static int vdpau_error(VdpStatus status)
+{
+ switch (status) {
+ case VDP_STATUS_OK:
+ return 0;
+ case VDP_STATUS_NO_IMPLEMENTATION:
+ return AVERROR(ENOSYS);
+ case VDP_STATUS_DISPLAY_PREEMPTED:
+ return AVERROR(EIO);
+ case VDP_STATUS_INVALID_HANDLE:
+ return AVERROR(EBADF);
+ case VDP_STATUS_INVALID_POINTER:
+ return AVERROR(EFAULT);
+ case VDP_STATUS_RESOURCES:
+ return AVERROR(ENOBUFS);
+ case VDP_STATUS_HANDLE_DEVICE_MISMATCH:
+ return AVERROR(EXDEV);
+ case VDP_STATUS_ERROR:
+ return AVERROR(EIO);
+ default:
+ return AVERROR(EINVAL);
+ }
+}
+
+int av_vdpau_get_surface_parameters(AVCodecContext *avctx,
+ VdpChromaType *type,
+ uint32_t *width, uint32_t *height)
+{
+ VdpChromaType t;
+ uint32_t w = avctx->coded_width;
+ uint32_t h = avctx->coded_height;
+
+ /* See <vdpau/vdpau.h> for per-type alignment constraints. */
+ switch (avctx->sw_pix_fmt) {
+ case AV_PIX_FMT_YUV420P:
+ case AV_PIX_FMT_YUVJ420P:
+ t = VDP_CHROMA_TYPE_420;
+ w = (w + 1) & ~1;
+ h = (h + 3) & ~3;
+ break;
+ case AV_PIX_FMT_YUV422P:
+ case AV_PIX_FMT_YUVJ422P:
+ t = VDP_CHROMA_TYPE_422;
+ w = (w + 1) & ~1;
+ h = (h + 1) & ~1;
+ break;
+ case AV_PIX_FMT_YUV444P:
+ case AV_PIX_FMT_YUVJ444P:
+ t = VDP_CHROMA_TYPE_444;
+ h = (h + 1) & ~1;
+ break;
+ default:
+ return AVERROR(ENOSYS);
+ }
+
+ if (type)
+ *type = t;
+ if (width)
+ *width = w;
+ if (height)
+ *height = h;
+ return 0;
+}
+
+int ff_vdpau_common_init(AVCodecContext *avctx, VdpDecoderProfile profile,
+ int level)
+{
+ VDPAUHWContext *hwctx = avctx->hwaccel_context;
+ VDPAUContext *vdctx = avctx->internal->hwaccel_priv_data;
+ VdpVideoSurfaceQueryCapabilities *surface_query_caps;
+ VdpDecoderQueryCapabilities *decoder_query_caps;
+ VdpDecoderCreate *create;
+ void *func;
+ VdpStatus status;
+ VdpBool supported;
+ uint32_t max_level, max_mb, max_width, max_height;
+ VdpChromaType type;
+ uint32_t width;
+ uint32_t height;
+
+ vdctx->width = UINT32_MAX;
+ vdctx->height = UINT32_MAX;
+ hwctx->reset = 0;
+
+ if (hwctx->context.decoder != VDP_INVALID_HANDLE) {
+ vdctx->decoder = hwctx->context.decoder;
+ vdctx->render = hwctx->context.render;
+ vdctx->device = VDP_INVALID_HANDLE;
+ return 0; /* Decoder created by user */
+ }
+
+ vdctx->device = hwctx->device;
+ vdctx->get_proc_address = hwctx->get_proc_address;
+
+ if (hwctx->flags & AV_HWACCEL_FLAG_IGNORE_LEVEL)
+ level = 0;
+ else if (level < 0)
+ return AVERROR(ENOTSUP);
+
+ if (av_vdpau_get_surface_parameters(avctx, &type, &width, &height))
+ return AVERROR(ENOSYS);
+
+ if (!(hwctx->flags & AV_HWACCEL_FLAG_ALLOW_HIGH_DEPTH) &&
+ type != VDP_CHROMA_TYPE_420)
+ return AVERROR(ENOSYS);
+
+ status = vdctx->get_proc_address(vdctx->device,
+ VDP_FUNC_ID_VIDEO_SURFACE_QUERY_CAPABILITIES,
+ &func);
+ if (status != VDP_STATUS_OK)
+ return vdpau_error(status);
+ else
+ surface_query_caps = func;
+
+ status = surface_query_caps(vdctx->device, type, &supported,
+ &max_width, &max_height);
+ if (status != VDP_STATUS_OK)
+ return vdpau_error(status);
+ if (supported != VDP_TRUE ||
+ max_width < width || max_height < height)
+ return AVERROR(ENOTSUP);
+
+ status = vdctx->get_proc_address(vdctx->device,
+ VDP_FUNC_ID_DECODER_QUERY_CAPABILITIES,
+ &func);
+ if (status != VDP_STATUS_OK)
+ return vdpau_error(status);
+ else
+ decoder_query_caps = func;
+
+ status = decoder_query_caps(vdctx->device, profile, &supported, &max_level,
+ &max_mb, &max_width, &max_height);
+#ifdef VDP_DECODER_PROFILE_H264_CONSTRAINED_BASELINE
+ if (status != VDP_STATUS_OK && profile == VDP_DECODER_PROFILE_H264_CONSTRAINED_BASELINE) {
+ /* Run-time backward compatibility for libvdpau 0.8 and earlier */
+ profile = VDP_DECODER_PROFILE_H264_MAIN;
+ status = decoder_query_caps(vdctx->device, profile, &supported,
+ &max_level, &max_mb,
+ &max_width, &max_height);
+ }
+#endif
+ if (status != VDP_STATUS_OK)
+ return vdpau_error(status);
+
+ if (supported != VDP_TRUE || max_level < level ||
+ max_width < width || max_height < height)
+ return AVERROR(ENOTSUP);
+
+ status = vdctx->get_proc_address(vdctx->device, VDP_FUNC_ID_DECODER_CREATE,
+ &func);
+ if (status != VDP_STATUS_OK)
+ return vdpau_error(status);
+ else
+ create = func;
+
+ status = vdctx->get_proc_address(vdctx->device, VDP_FUNC_ID_DECODER_RENDER,
+ &func);
+ if (status != VDP_STATUS_OK)
+ return vdpau_error(status);
+ else
+ vdctx->render = func;
+
+ status = create(vdctx->device, profile, width, height, avctx->refs,
+ &vdctx->decoder);
+ if (status == VDP_STATUS_OK) {
+ vdctx->width = avctx->coded_width;
+ vdctx->height = avctx->coded_height;
+ }
+
+ return vdpau_error(status);
+}
+
+int ff_vdpau_common_uninit(AVCodecContext *avctx)
+{
+ VDPAUContext *vdctx = avctx->internal->hwaccel_priv_data;
+ VdpDecoderDestroy *destroy;
+ void *func;
+ VdpStatus status;
+
+ if (vdctx->device == VDP_INVALID_HANDLE)
+ return 0; /* Decoder created and destroyed by user */
+ if (vdctx->width == UINT32_MAX && vdctx->height == UINT32_MAX)
+ return 0;
+
+ status = vdctx->get_proc_address(vdctx->device,
+ VDP_FUNC_ID_DECODER_DESTROY, &func);
+ if (status != VDP_STATUS_OK)
+ return vdpau_error(status);
+ else
+ destroy = func;
+
+ status = destroy(vdctx->decoder);
+ return vdpau_error(status);
+}
+
+static int ff_vdpau_common_reinit(AVCodecContext *avctx)
+{
+ VDPAUHWContext *hwctx = avctx->hwaccel_context;
+ VDPAUContext *vdctx = avctx->internal->hwaccel_priv_data;
+
+ if (vdctx->device == VDP_INVALID_HANDLE)
+ return 0; /* Decoder created by user */
+ if (avctx->coded_width == vdctx->width &&
+ avctx->coded_height == vdctx->height && !hwctx->reset)
+ return 0;
+
+ avctx->hwaccel->uninit(avctx);
+ return avctx->hwaccel->init(avctx);
+}
+