void dxva2_img_ref_decoder(struct mp_image *mpi, IDirectXVideoDecoder *decoder)
{
assert(mpi->imgfmt == IMGFMT_DXVA2);
struct dxva2_surface *surface = (struct dxva2_surface *)mpi->planes[0];
if (surface->decoder)
IDirectXVideoDecoder_Release(surface->decoder);
surface->decoder = decoder;
IDirectXVideoDecoder_AddRef(surface->decoder);
}
static int dxva2_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
{
HwAccelContext *hac = s->opaque;
DXVA2Context *ctx = hac->hwaccel_ctx;
int i, old_unused = -1;
LPDIRECT3DSURFACE9 surface;
DXVA2SurfaceWrapper *w = NULL;
av_assert0(frame->format == AV_PIX_FMT_DXVA2_VLD);
for (i = 0; i < ctx->num_surfaces; i++) {
surface_info *info = &ctx->surface_infos[i];
if (!info->used && (old_unused == -1 || info->age < ctx->surface_infos[old_unused].age))
old_unused = i;
}
if (old_unused == -1) {
av_log(NULL, AV_LOG_ERROR, "No free DXVA2 surface!\n");
return AVERROR(ENOMEM);
}
i = old_unused;
av_log(NULL, AV_LOG_DEBUG, "dxva2_get_buffer:%d\n",i);
surface = ctx->surfaces[i];
w = av_mallocz(sizeof(*w));
if (!w)
return AVERROR(ENOMEM);
frame->buf[0] = av_buffer_create((uint8_t*)surface, 0,
dxva2_release_buffer, w,
AV_BUFFER_FLAG_READONLY);
if (!frame->buf[0]) {
av_free(w);
return AVERROR(ENOMEM);
}
w->ctx = ctx;
w->surface = surface;
IDirect3DSurface9_AddRef(w->surface);
w->decoder = ctx->decoder;
IDirectXVideoDecoder_AddRef(w->decoder);
ctx->surface_infos[i].used = 1;
ctx->surface_infos[i].age = ctx->surface_age++;
frame->data[3] = (uint8_t *)surface;
return 0;
}
struct mp_image *dxva2_new_ref(IDirectXVideoDecoder *decoder,
LPDIRECT3DSURFACE9 d3d9_surface, int w, int h)
{
if (!decoder || !d3d9_surface)
return NULL;
struct dxva2_surface *surface = talloc_zero(NULL, struct dxva2_surface);
// Add additional references to the libraries which might otherwise be freed
// before the surface, which is observed to lead to bad behaviour
surface->d3dlib = LoadLibrary(L"d3d9.dll");
surface->dxva2lib = LoadLibrary(L"dxva2.dll");
if (!surface->d3dlib || !surface->dxva2lib)
goto fail;
surface->surface = d3d9_surface;
IDirect3DSurface9_AddRef(surface->surface);
surface->decoder = decoder;
IDirectXVideoDecoder_AddRef(surface->decoder);
struct mp_image *mpi = mp_image_new_custom_ref(&(struct mp_image){0},
static struct mp_image *dxva2_new_ref(IDirectXVideoDecoder *decoder,
IDirect3DSurface9 *d3d9_surface,
int w, int h)
{
if (!decoder || !d3d9_surface)
return NULL;
struct dxva2_surface *surface = talloc_zero(NULL, struct dxva2_surface);
surface->surface = d3d9_surface;
IDirect3DSurface9_AddRef(surface->surface);
surface->decoder = decoder;
IDirectXVideoDecoder_AddRef(surface->decoder);
struct mp_image *mpi =
mp_image_new_custom_ref(NULL, surface, dxva2_release_img);
if (!mpi)
abort();
mp_image_setfmt(mpi, IMGFMT_DXVA2);
mp_image_set_size(mpi, w, h);
mpi->planes[3] = (void *)surface->surface;
return mpi;
}
static struct mp_image *dxva2_allocate_image(struct lavc_ctx *s,
int img_w, int img_h)
{
DXVA2Context *ctx = s->hwdec_priv;
int i, old_unused = -1;
for (i = 0; i < ctx->num_surfaces; i++) {
surface_info *info = &ctx->surface_infos[i];
if (!info->used && (old_unused == -1 || info->age < ctx->surface_infos[old_unused].age))
old_unused = i;
}
if (old_unused == -1) {
MP_ERR(ctx, "No free DXVA2 surface!\n");
return NULL;
}
i = old_unused;
DXVA2SurfaceWrapper *w = av_mallocz(sizeof(*w));
if (!w)
return NULL;
w->ctx = ctx;
w->surface = ctx->surfaces[i];;
IDirect3DSurface9_AddRef(w->surface);
w->decoder = ctx->decoder;
IDirectXVideoDecoder_AddRef(w->decoder);
ctx->surface_infos[i].used = 1;
ctx->surface_infos[i].age = ctx->surface_age++;
struct mp_image mpi = {0};
mp_image_setfmt(&mpi, IMGFMT_DXVA2);
mp_image_set_size(&mpi, img_w, img_h);
mpi.planes[3] = (void *)w->surface;
return mp_image_new_custom_ref(&mpi, w, dxva2_release_img);
}
