diff options
Diffstat (limited to 'libavcodec/nvdec_vp8.c')
-rw-r--r-- | libavcodec/nvdec_vp8.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/libavcodec/nvdec_vp8.c b/libavcodec/nvdec_vp8.c new file mode 100644 index 0000000..7b37445 --- /dev/null +++ b/libavcodec/nvdec_vp8.c @@ -0,0 +1,105 @@ +/* + * VP8 HW decode acceleration through NVDEC + * + * Copyright (c) 2017 Philip Langdale + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "avcodec.h" +#include "nvdec.h" +#include "decode.h" +#include "internal.h" +#include "vp8.h" + +static unsigned char safe_get_ref_idx(VP8Frame *frame) +{ + return frame ? ff_nvdec_get_ref_idx(frame->tf.f) : 255; +} + +static int nvdec_vp8_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) +{ + VP8Context *h = avctx->priv_data; + + NVDECContext *ctx = avctx->internal->hwaccel_priv_data; + CUVIDPICPARAMS *pp = &ctx->pic_params; + FrameDecodeData *fdd; + NVDECFrame *cf; + AVFrame *cur_frame = h->framep[VP56_FRAME_CURRENT]->tf.f; + + int ret; + + ret = ff_nvdec_start_frame(avctx, cur_frame); + if (ret < 0) + return ret; + + fdd = (FrameDecodeData*)cur_frame->private_ref->data; + cf = (NVDECFrame*)fdd->hwaccel_priv; + + *pp = (CUVIDPICPARAMS) { + .PicWidthInMbs = (cur_frame->width + 15) / 16, + .FrameHeightInMbs = (cur_frame->height + 15) / 16, + .CurrPicIdx = cf->idx, + + .CodecSpecific.vp8 = { + .width = cur_frame->width, + .height = cur_frame->height, + + .first_partition_size = h->header_partition_size, + + .LastRefIdx = safe_get_ref_idx(h->framep[VP56_FRAME_PREVIOUS]), + .GoldenRefIdx = safe_get_ref_idx(h->framep[VP56_FRAME_GOLDEN]), + .AltRefIdx = safe_get_ref_idx(h->framep[VP56_FRAME_GOLDEN2]), + /* + * Explicit braces for anonymous inners and unnamed fields + * to work around limitations in ancient versions of gcc. + */ + { // union + { // struct + !h->keyframe, // frame_type + h->profile, // version + !h->invisible, // show_frame + h->segmentation.enabled ? // update_mb_segmentation_data + h->segmentation.update_feature_data : 0, + } + } + } + }; + + return 0; +} + +static int nvdec_vp8_frame_params(AVCodecContext *avctx, + AVBufferRef *hw_frames_ctx) +{ + // VP8 uses a fixed size pool of 3 possible reference frames + return ff_nvdec_frame_params(avctx, hw_frames_ctx, 3); +} + +AVHWAccel ff_vp8_nvdec_hwaccel = { + .name = "vp8_nvdec", + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_VP8, + .pix_fmt = AV_PIX_FMT_CUDA, + .start_frame = nvdec_vp8_start_frame, + .end_frame = ff_nvdec_simple_end_frame, + .decode_slice = ff_nvdec_simple_decode_slice, + .frame_params = nvdec_vp8_frame_params, + .init = ff_nvdec_decode_init, + .uninit = ff_nvdec_decode_uninit, + .priv_data_size = sizeof(NVDECContext), +}; |