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nvenc: Delay frame output to increase encoding speed 

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Timo Rothenpieler 2015-07-25 23:20:28 +02:00 committed by Anton Khirnov
parent 9427d92f40
commit a1e215ea01
4 changed files with 14 additions and 1 deletions
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10
libavcodec/nvenc.c
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@ -840,6 +840,8 @@ static int nvenc_setup_surfaces(AVCodecContext *avctx)
ctx->nb_surfaces = FFMAX(4 + avctx->max_b_frames,
ctx->nb_surfaces);
ctx->async_depth = FFMIN(ctx->async_depth, ctx->nb_surfaces - 1);
ctx->frames = av_mallocz_array(ctx->nb_surfaces, sizeof(*ctx->frames));
if (!ctx->frames)
@ -1301,13 +1303,19 @@ FF_ENABLE_DEPRECATION_WARNINGS
static int output_ready(AVCodecContext *avctx, int flush)
{
NVENCContext *ctx = avctx->priv_data;
int nb_ready, nb_pending;
/* when B-frames are enabled, we wait for two initial timestamps to
* calculate the first dts */
if (!flush && avctx->max_b_frames > 0 &&
(ctx->initial_pts[0] == AV_NOPTS_VALUE || ctx->initial_pts[1] == AV_NOPTS_VALUE))
return 0;
return av_fifo_size(ctx->ready) > 0;
nb_ready = av_fifo_size(ctx->ready) / sizeof(NVENCFrame*);
nb_pending = av_fifo_size(ctx->pending) / sizeof(NVENCFrame*);
if (flush)
return nb_ready > 0;
return (nb_ready > 0) && (nb_ready + nb_pending >= ctx->async_depth);
}
int ff_nvenc_encode_frame(AVCodecContext *avctx, AVPacket *pkt,

1
libavcodec/nvenc.h
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@ -142,6 +142,7 @@ typedef struct NVENCContext {
int rc;
int device;
int flags;
int async_depth;
} NVENCContext;
int ff_nvenc_encode_init(AVCodecContext *avctx);

2
libavcodec/nvenc_h264.c
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@ -72,6 +72,8 @@ static const AVOption options[] = {
{ "device", "Select a specific NVENC device", OFFSET(device), AV_OPT_TYPE_INT, { .i64 = -1 }, -2, INT_MAX, VE, "device" },
{ "any", "Pick the first device available", 0, AV_OPT_TYPE_CONST, { .i64 = ANY_DEVICE }, 0, 0, VE, "device" },
{ "list", "List the available devices", 0, AV_OPT_TYPE_CONST, { .i64 = LIST_DEVICES }, 0, 0, VE, "device" },
{ "async_depth", "Delay frame output by the given amount of frames", OFFSET(async_depth), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 0, INT_MAX, VE },
{ "delay", "Delay frame output by the given amount of frames", OFFSET(async_depth), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 0, INT_MAX, VE },
{ NULL }
};

2
libavcodec/nvenc_hevc.c
View File

@ -68,6 +68,8 @@ static const AVOption options[] = {
{ "device", "Select a specific NVENC device", OFFSET(device), AV_OPT_TYPE_INT, { .i64 = -1 }, -2, INT_MAX, VE, "device" },
{ "any", "Pick the first device available", 0, AV_OPT_TYPE_CONST, { .i64 = ANY_DEVICE }, 0, 0, VE, "device" },
{ "list", "List the available devices", 0, AV_OPT_TYPE_CONST, { .i64 = LIST_DEVICES }, 0, 0, VE, "device" },
{ "async_depth", "Delay frame output by the given amount of frames", OFFSET(async_depth), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 0, INT_MAX, VE },
{ "delay", "Delay frame output by the given amount of frames", OFFSET(async_depth), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 0, INT_MAX, VE },
{ NULL }
};