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nvenc: support CUDA frames as input

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This commit is contained in:
Anton Khirnov 2016-02-01 15:56:31 +01:00
parent 7b3214d005
commit 871d0930d4
2 changed files with 239 additions and 63 deletions
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284
libavcodec/nvenc.c
View File

@ -47,6 +47,8 @@
#endif
#include "libavutil/common.h"
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_cuda.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "avcodec.h"
@ -80,6 +82,7 @@ const enum AVPixelFormat ff_nvenc_pix_fmts[] = {
AV_PIX_FMT_NV12,
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUV444P,
AV_PIX_FMT_CUDA,
AV_PIX_FMT_NONE
};
@ -261,6 +264,7 @@ static int nvenc_check_cap(AVCodecContext *avctx, NV_ENC_CAPS cap)
static int nvenc_check_capabilities(AVCodecContext *avctx)
{
NVENCContext *ctx = avctx->priv_data;
int ret;
ret = nvenc_check_codec_support(avctx);
@ -270,7 +274,7 @@ static int nvenc_check_capabilities(AVCodecContext *avctx)
}
ret = nvenc_check_cap(avctx, NV_ENC_CAPS_SUPPORT_YUV444_ENCODE);
if (avctx->pix_fmt == AV_PIX_FMT_YUV444P && ret <= 0) {
if (ctx->data_pix_fmt == AV_PIX_FMT_YUV444P && ret <= 0) {
av_log(avctx, AV_LOG_VERBOSE, "YUV444P not supported\n");
return AVERROR(ENOSYS);
}
@ -334,10 +338,12 @@ static int nvenc_check_device(AVCodecContext *avctx, int idx)
if (((major << 4) | minor) < NVENC_CAP)
goto fail;
ret = nvel->cu_ctx_create(&ctx->cu_context, 0, cu_device);
ret = nvel->cu_ctx_create(&ctx->cu_context_internal, 0, cu_device);
if (ret != CUDA_SUCCESS)
goto fail;
ctx->cu_context = ctx->cu_context_internal;
ret = nvel->cu_ctx_pop_current(&dummy);
if (ret != CUDA_SUCCESS)
goto fail2;
@ -358,8 +364,8 @@ fail3:
ctx->nvenc_ctx = NULL;
fail2:
nvel->cu_ctx_destroy(ctx->cu_context);
ctx->cu_context = NULL;
nvel->cu_ctx_destroy(ctx->cu_context_internal);
ctx->cu_context_internal = NULL;
fail:
if (ret != 0)
@ -373,19 +379,6 @@ static int nvenc_setup_device(AVCodecContext *avctx)
{
NVENCContext *ctx = avctx->priv_data;
NVENCLibraryContext *nvel = &ctx->nvel;
int i, nb_devices = 0;
if ((nvel->cu_init(0)) != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_ERROR,
"Cannot init CUDA\n");
return AVERROR_UNKNOWN;
}
if ((nvel->cu_device_get_count(&nb_devices)) != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_ERROR,
"Cannot enumerate the CUDA devices\n");
return AVERROR_UNKNOWN;
}
switch (avctx->codec->id) {
case AV_CODEC_ID_H264:
@ -398,15 +391,54 @@ static int nvenc_setup_device(AVCodecContext *avctx)
return AVERROR_BUG;
}
for (i = 0; i < nb_devices; ++i) {
if ((nvenc_check_device(avctx, i)) >= 0 && ctx->device != LIST_DEVICES)
return 0;
if (avctx->pix_fmt == AV_PIX_FMT_CUDA) {
AVHWFramesContext *frames_ctx;
AVCUDADeviceContext *device_hwctx;
int ret;
if (!avctx->hw_frames_ctx)
return AVERROR(EINVAL);
frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
device_hwctx = frames_ctx->device_ctx->hwctx;
ctx->cu_context = device_hwctx->cuda_ctx;
ret = nvenc_open_session(avctx);
if (ret < 0)
return ret;
ret = nvenc_check_capabilities(avctx);
if (ret < 0)
return ret;
} else {
int i, nb_devices = 0;
if ((nvel->cu_init(0)) != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_ERROR,
"Cannot init CUDA\n");
return AVERROR_UNKNOWN;
}
if ((nvel->cu_device_get_count(&nb_devices)) != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_ERROR,
"Cannot enumerate the CUDA devices\n");
return AVERROR_UNKNOWN;
}
for (i = 0; i < nb_devices; ++i) {
if ((nvenc_check_device(avctx, i)) >= 0 && ctx->device != LIST_DEVICES)
return 0;
}
if (ctx->device == LIST_DEVICES)
return AVERROR_EXIT;
return AVERROR(ENOSYS);
}
if (ctx->device == LIST_DEVICES)
return AVERROR_EXIT;
return AVERROR(ENOSYS);
return 0;
}
typedef struct GUIDTuple {
@ -561,7 +593,7 @@ static int nvenc_setup_h264_config(AVCodecContext *avctx)
if (ctx->profile)
avctx->profile = ctx->profile;
if (avctx->pix_fmt == AV_PIX_FMT_YUV444P)
if (ctx->data_pix_fmt == AV_PIX_FMT_YUV444P)
h264->chromaFormatIDC = 3;
else
h264->chromaFormatIDC = 1;
@ -732,38 +764,45 @@ static int nvenc_alloc_surface(AVCodecContext *avctx, int idx)
NVENCContext *ctx = avctx->priv_data;
NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
int ret;
NV_ENC_CREATE_INPUT_BUFFER in_buffer = { 0 };
NV_ENC_CREATE_BITSTREAM_BUFFER out_buffer = { 0 };
in_buffer.version = NV_ENC_CREATE_INPUT_BUFFER_VER;
out_buffer.version = NV_ENC_CREATE_BITSTREAM_BUFFER_VER;
in_buffer.width = avctx->width;
in_buffer.height = avctx->height;
in_buffer.memoryHeap = NV_ENC_MEMORY_HEAP_SYSMEM_UNCACHED;
switch (avctx->pix_fmt) {
switch (ctx->data_pix_fmt) {
case AV_PIX_FMT_YUV420P:
in_buffer.bufferFmt = NV_ENC_BUFFER_FORMAT_YV12_PL;
ctx->frames[idx].format = NV_ENC_BUFFER_FORMAT_YV12_PL;
break;
case AV_PIX_FMT_NV12:
in_buffer.bufferFmt = NV_ENC_BUFFER_FORMAT_NV12_PL;
ctx->frames[idx].format = NV_ENC_BUFFER_FORMAT_NV12_PL;
break;
case AV_PIX_FMT_YUV444P:
in_buffer.bufferFmt = NV_ENC_BUFFER_FORMAT_YUV444_PL;
ctx->frames[idx].format = NV_ENC_BUFFER_FORMAT_YUV444_PL;
break;
default:
return AVERROR_BUG;
}
ret = nv->nvEncCreateInputBuffer(ctx->nvenc_ctx, &in_buffer);
if (ret != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, ret, "CreateInputBuffer failed");
if (avctx->pix_fmt == AV_PIX_FMT_CUDA) {
ctx->frames[idx].in_ref = av_frame_alloc();
if (!ctx->frames[idx].in_ref)
return AVERROR(ENOMEM);
} else {
NV_ENC_CREATE_INPUT_BUFFER in_buffer = { 0 };
ctx->frames[idx].in = in_buffer.inputBuffer;
ctx->frames[idx].format = in_buffer.bufferFmt;
in_buffer.version = NV_ENC_CREATE_INPUT_BUFFER_VER;
in_buffer.width = avctx->width;
in_buffer.height = avctx->height;
in_buffer.bufferFmt = ctx->frames[idx].format;
in_buffer.memoryHeap = NV_ENC_MEMORY_HEAP_SYSMEM_UNCACHED;
ret = nv->nvEncCreateInputBuffer(ctx->nvenc_ctx, &in_buffer);
if (ret != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, ret, "CreateInputBuffer failed");
ctx->frames[idx].in = in_buffer.inputBuffer;
}
out_buffer.version = NV_ENC_CREATE_BITSTREAM_BUFFER_VER;
/* 1MB is large enough to hold most output frames.
* NVENC increases this automaticaly if it's not enough. */
out_buffer.size = BITSTREAM_BUFFER_SIZE;
@ -854,18 +893,29 @@ av_cold int ff_nvenc_encode_close(AVCodecContext *avctx)
if (ctx->frames) {
for (i = 0; i < ctx->nb_surfaces; ++i) {
nv->nvEncDestroyInputBuffer(ctx->nvenc_ctx, ctx->frames[i].in);
if (avctx->pix_fmt != AV_PIX_FMT_CUDA) {
nv->nvEncDestroyInputBuffer(ctx->nvenc_ctx, ctx->frames[i].in);
} else if (ctx->frames[i].in) {
nv->nvEncUnmapInputResource(ctx->nvenc_ctx, ctx->frames[i].in_map.mappedResource);
}
av_frame_free(&ctx->frames[i].in_ref);
nv->nvEncDestroyBitstreamBuffer(ctx->nvenc_ctx, ctx->frames[i].out);
}
}
for (i = 0; i < ctx->nb_registered_frames; i++) {
if (ctx->registered_frames[i].regptr)
nv->nvEncUnregisterResource(ctx->nvenc_ctx, ctx->registered_frames[i].regptr);
}
ctx->nb_registered_frames = 0;
av_freep(&ctx->frames);
if (ctx->nvenc_ctx)
nv->nvEncDestroyEncoder(ctx->nvenc_ctx);
if (ctx->cu_context)
ctx->nvel.cu_ctx_destroy(ctx->cu_context);
if (ctx->cu_context_internal)
ctx->nvel.cu_ctx_destroy(ctx->cu_context_internal);
if (ctx->nvel.nvenc)
dlclose(ctx->nvel.nvenc);
@ -880,8 +930,22 @@ av_cold int ff_nvenc_encode_close(AVCodecContext *avctx)
av_cold int ff_nvenc_encode_init(AVCodecContext *avctx)
{
NVENCContext *ctx = avctx->priv_data;
int ret;
if (avctx->pix_fmt == AV_PIX_FMT_CUDA) {
AVHWFramesContext *frames_ctx;
if (!avctx->hw_frames_ctx) {
av_log(avctx, AV_LOG_ERROR,
"hw_frames_ctx must be set when using GPU frames as input\n");
return AVERROR(EINVAL);
}
frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
ctx->data_pix_fmt = frames_ctx->sw_format;
} else {
ctx->data_pix_fmt = avctx->pix_fmt;
}
if ((ret = nvenc_load_libraries(avctx)) < 0)
return ret;
@ -970,36 +1034,122 @@ static int nvenc_copy_frame(NV_ENC_LOCK_INPUT_BUFFER *in, const AVFrame *frame)
return 0;
}
static int nvenc_find_free_reg_resource(AVCodecContext *avctx)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
int i;
if (ctx->nb_registered_frames == FF_ARRAY_ELEMS(ctx->registered_frames)) {
for (i = 0; i < ctx->nb_registered_frames; i++) {
if (!ctx->registered_frames[i].mapped) {
if (ctx->registered_frames[i].regptr) {
nv->nvEncUnregisterResource(ctx->nvenc_ctx,
ctx->registered_frames[i].regptr);
ctx->registered_frames[i].regptr = NULL;
}
return i;
}
}
} else {
return ctx->nb_registered_frames++;
}
av_log(avctx, AV_LOG_ERROR, "Too many registered CUDA frames\n");
return AVERROR(ENOMEM);
}
static int nvenc_register_frame(AVCodecContext *avctx, const AVFrame *frame)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
NV_ENC_REGISTER_RESOURCE reg;
int i, idx, ret;
for (i = 0; i < ctx->nb_registered_frames; i++) {
if (ctx->registered_frames[i].ptr == (CUdeviceptr)frame->data[0])
return i;
}
idx = nvenc_find_free_reg_resource(avctx);
if (idx < 0)
return idx;
reg.version = NV_ENC_REGISTER_RESOURCE_VER;
reg.resourceType = NV_ENC_INPUT_RESOURCE_TYPE_CUDADEVICEPTR;
reg.width = frames_ctx->width;
reg.height = frames_ctx->height;
reg.bufferFormat = ctx->frames[0].format;
reg.pitch = frame->linesize[0];
reg.resourceToRegister = frame->data[0];
ret = nv->nvEncRegisterResource(ctx->nvenc_ctx, &reg);
if (ret != NV_ENC_SUCCESS) {
nvenc_print_error(avctx, ret, "Error registering an input resource");
return AVERROR_UNKNOWN;
}
ctx->registered_frames[idx].ptr = (CUdeviceptr)frame->data[0];
ctx->registered_frames[idx].regptr = reg.registeredResource;
return idx;
}
static int nvenc_upload_frame(AVCodecContext *avctx, const AVFrame *frame,
NVENCFrame *nvenc_frame)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
NV_ENC_LOCK_INPUT_BUFFER params = { 0 };
int ret;
params.version = NV_ENC_LOCK_INPUT_BUFFER_VER;
params.inputBuffer = nvenc_frame->in;
if (avctx->pix_fmt == AV_PIX_FMT_CUDA) {
int reg_idx;
ret = nvenc_register_frame(avctx, frame);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Could not register an input CUDA frame\n");
return ret;
}
reg_idx = ret;
ret = nv->nvEncLockInputBuffer(ctx->nvenc_ctx, &params);
if (ret != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, ret, "Cannot lock the buffer");
ret = av_frame_ref(nvenc_frame->in_ref, frame);
if (ret < 0)
return ret;
ret = nvenc_copy_frame(&params, frame);
if (ret < 0)
goto fail;
nvenc_frame->in_map.version = NV_ENC_MAP_INPUT_RESOURCE_VER;
nvenc_frame->in_map.registeredResource = ctx->registered_frames[reg_idx].regptr;
ret = nv->nvEncUnlockInputBuffer(ctx->nvenc_ctx, nvenc_frame->in);
if (ret != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, ret, "Cannot unlock the buffer");
ret = nv->nvEncMapInputResource(ctx->nvenc_ctx, &nvenc_frame->in_map);
if (ret != NV_ENC_SUCCESS) {
av_frame_unref(nvenc_frame->in_ref);
return nvenc_print_error(avctx, ret, "Error mapping an input resource");
}
ctx->registered_frames[reg_idx].mapped = 1;
nvenc_frame->reg_idx = reg_idx;
nvenc_frame->in = nvenc_frame->in_map.mappedResource;
} else {
NV_ENC_LOCK_INPUT_BUFFER params = { 0 };
params.version = NV_ENC_LOCK_INPUT_BUFFER_VER;
params.inputBuffer = nvenc_frame->in;
ret = nv->nvEncLockInputBuffer(ctx->nvenc_ctx, &params);
if (ret != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, ret, "Cannot lock the buffer");
ret = nvenc_copy_frame(&params, frame);
if (ret < 0) {
nv->nvEncUnlockInputBuffer(ctx->nvenc_ctx, nvenc_frame->in);
return ret;
}
ret = nv->nvEncUnlockInputBuffer(ctx->nvenc_ctx, nvenc_frame->in);
if (ret != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, ret, "Cannot unlock the buffer");
}
return 0;
fail:
nv->nvEncUnlockInputBuffer(ctx->nvenc_ctx, nvenc_frame->in);
return ret;
}
static void nvenc_codec_specific_pic_params(AVCodecContext *avctx,
@ -1094,6 +1244,14 @@ static int nvenc_get_output(AVCodecContext *avctx, AVPacket *pkt)
if (ret < 0)
return nvenc_print_error(avctx, ret, "Cannot unlock the bitstream");
if (avctx->pix_fmt == AV_PIX_FMT_CUDA) {
nv->nvEncUnmapInputResource(ctx->nvenc_ctx, frame->in_map.mappedResource);
av_frame_unref(frame->in_ref);
ctx->registered_frames[frame->reg_idx].mapped = 0;
frame->in = NULL;
}
frame->locked = 0;
ret = nvenc_set_timestamp(avctx, &params, pkt);

18
libavcodec/nvenc.h
View File

@ -29,8 +29,14 @@
#include "avcodec.h"
#define MAX_REGISTERED_FRAMES 64
typedef struct NVENCFrame {
NV_ENC_INPUT_PTR in;
AVFrame *in_ref;
NV_ENC_MAP_INPUT_RESOURCE in_map;
int reg_idx;
NV_ENC_OUTPUT_PTR out;
NV_ENC_BUFFER_FORMAT format;
int locked;
@ -104,12 +110,24 @@ typedef struct NVENCContext {
NV_ENC_CONFIG config;
CUcontext cu_context;
CUcontext cu_context_internal;
int nb_surfaces;
NVENCFrame *frames;
AVFifoBuffer *timestamps;
AVFifoBuffer *pending, *ready;
struct {
CUdeviceptr ptr;
NV_ENC_REGISTERED_PTR regptr;
int mapped;
} registered_frames[MAX_REGISTERED_FRAMES];
int nb_registered_frames;
/* the actual data pixel format, different from
* AVCodecContext.pix_fmt when using hwaccel frames on input */
enum AVPixelFormat data_pix_fmt;
/* timestamps of the first two frames, for computing the first dts
* when b-frames are present */
int64_t initial_pts[2];