From b08caa87c35a768ec0abb16b1e99c3a85f1df28e Mon Sep 17 00:00:00 2001
From: Luca Barbato <lu_zero@gentoo.org>
Date: Sat, 30 May 2015 16:40:13 +0200
Subject: nvenc: H264 and HEVC encoders

Partially based on the work of Timo Rothenpieler <timo@rothenpieler.org>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
---
 libavcodec/nvenc.h | 135 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 libavcodec/nvenc.h

(limited to 'libavcodec/nvenc.h')

diff --git a/libavcodec/nvenc.h b/libavcodec/nvenc.h
new file mode 100644
index 0000000000..8819b3ca32
--- /dev/null
+++ b/libavcodec/nvenc.h
@@ -0,0 +1,135 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_NVENC_H
+#define AVCODEC_NVENC_H
+
+#include <cuda.h>
+#include <nvEncodeAPI.h>
+
+#include "libavutil/fifo.h"
+#include "libavutil/opt.h"
+
+#include "avcodec.h"
+
+typedef struct NVENCInputSurface {
+    NV_ENC_INPUT_PTR in;
+    NV_ENC_BUFFER_FORMAT format;
+    int locked;
+} NVENCInputSurface;
+
+typedef struct NVENCOutputSurface {
+    NV_ENC_OUTPUT_PTR out;
+    NVENCInputSurface *in;
+    int busy;
+} NVENCOutputSurface;
+
+typedef CUresult(CUDAAPI *PCUINIT)(unsigned int Flags);
+typedef CUresult(CUDAAPI *PCUDEVICEGETCOUNT)(int *count);
+typedef CUresult(CUDAAPI *PCUDEVICEGET)(CUdevice *device, int ordinal);
+typedef CUresult(CUDAAPI *PCUDEVICEGETNAME)(char *name, int len, CUdevice dev);
+typedef CUresult(CUDAAPI *PCUDEVICECOMPUTECAPABILITY)(int *major, int *minor, CUdevice dev);
+typedef CUresult(CUDAAPI *PCUCTXCREATE)(CUcontext *pctx, unsigned int flags, CUdevice dev);
+typedef CUresult(CUDAAPI *PCUCTXPOPCURRENT)(CUcontext *pctx);
+typedef CUresult(CUDAAPI *PCUCTXDESTROY)(CUcontext ctx);
+
+typedef NVENCSTATUS (NVENCAPI *PNVENCODEAPICREATEINSTANCE)(NV_ENCODE_API_FUNCTION_LIST *functionList);
+
+typedef struct NVENCLibraryContext
+{
+    void *cuda;
+    void *nvenc;
+
+    PCUINIT cu_init;
+    PCUDEVICEGETCOUNT cu_device_get_count;
+    PCUDEVICEGET cu_device_get;
+    PCUDEVICEGETNAME cu_device_get_name;
+    PCUDEVICECOMPUTECAPABILITY cu_device_compute_capability;
+    PCUCTXCREATE cu_ctx_create;
+    PCUCTXPOPCURRENT cu_ctx_pop_current;
+    PCUCTXDESTROY cu_ctx_destroy;
+
+    NV_ENCODE_API_FUNCTION_LIST nvenc_funcs;
+} NVENCLibraryContext;
+
+enum {
+    PRESET_DEFAULT,
+    PRESET_HP,
+    PRESET_HQ,
+    PRESET_BD ,
+    PRESET_LOW_LATENCY_DEFAULT ,
+    PRESET_LOW_LATENCY_HQ ,
+    PRESET_LOW_LATENCY_HP,
+    PRESET_LOSSLESS_DEFAULT,
+    PRESET_LOSSLESS_HP,
+};
+
+enum {
+    NV_ENC_H264_PROFILE_BASELINE,
+    NV_ENC_H264_PROFILE_MAIN,
+    NV_ENC_H264_PROFILE_HIGH,
+    NV_ENC_H264_PROFILE_HIGH_444,
+    NV_ENC_H264_PROFILE_CONSTRAINED_HIGH,
+};
+
+enum {
+    NVENC_LOWLATENCY = 1,
+    NVENC_LOSSLESS,
+};
+
+enum {
+    LIST_DEVICES = -2,
+    ANY_DEVICE,
+};
+
+typedef struct NVENCContext {
+    AVClass *class;
+    NVENCLibraryContext nvel;
+
+    NV_ENC_INITIALIZE_PARAMS params;
+    NV_ENC_CONFIG config;
+
+    CUcontext cu_context;
+
+    int nb_surfaces;
+    NVENCInputSurface *in;
+    NVENCOutputSurface *out;
+    AVFifoBuffer *timestamps;
+    AVFifoBuffer *pending, *ready;
+
+    int64_t last_dts;
+
+    void *nvenc_ctx;
+
+    int preset;
+    int profile;
+    int level;
+    int tier;
+    int rc;
+    int device;
+    int flags;
+} NVENCContext;
+
+int ff_nvenc_encode_init(AVCodecContext *avctx);
+
+int ff_nvenc_encode_close(AVCodecContext *avctx);
+
+int ff_nvenc_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+                          const AVFrame *frame, int *got_packet);
+
+#endif /* AVCODEC_NVENC_H */
-- 
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