1 files changed, 86 insertions, 0 deletions
diff --git a/libavcodec/nvdec_mjpeg.c b/libavcodec/nvdec_mjpeg.c
new file mode 100644
index 0000000000..7e404246ce
--- /dev/null
+++ b/libavcodec/nvdec_mjpeg.c
@@ -0,0 +1,86 @@
+/*
+ * MJPEG 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 "internal.h"
+#include "mjpegdec.h"
+#include "nvdec.h"
+#include "decode.h"
+
+static int nvdec_mjpeg_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
+{
+    MJpegDecodeContext *s = avctx->priv_data;
+
+    NVDECContext      *ctx = avctx->internal->hwaccel_priv_data;
+    CUVIDPICPARAMS     *pp = &ctx->pic_params;
+    FrameDecodeData *fdd;
+    NVDECFrame *cf;
+    AVFrame *cur_frame = s->picture;
+
+    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,
+
+        .intra_pic_flag    = 1,
+        .ref_pic_flag      = 0,
+    };
+
+    return ff_nvdec_simple_decode_slice(avctx, buffer, size);
+}
+
+static int nvdec_mjpeg_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
+{
+    return 0;
+}
+
+static int nvdec_mjpeg_frame_params(AVCodecContext *avctx,
+                                  AVBufferRef *hw_frames_ctx)
+{
+    // Only need storage for the current frame
+    return ff_nvdec_frame_params(avctx, hw_frames_ctx, 1);
+}
+
+#if CONFIG_MJPEG_NVDEC_HWACCEL
+AVHWAccel ff_mjpeg_nvdec_hwaccel = {
+    .name                 = "mjpeg_nvdec",
+    .type                 = AVMEDIA_TYPE_VIDEO,
+    .id                   = AV_CODEC_ID_MJPEG,
+    .pix_fmt              = AV_PIX_FMT_CUDA,
+    .start_frame          = nvdec_mjpeg_start_frame,
+    .end_frame            = ff_nvdec_simple_end_frame,
+    .decode_slice         = nvdec_mjpeg_decode_slice,
+    .frame_params         = nvdec_mjpeg_frame_params,
+    .init                 = ff_nvdec_decode_init,
+    .uninit               = ff_nvdec_decode_uninit,
+    .priv_data_size       = sizeof(NVDECContext),
+};
+#endif