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avcodec/nvenc: Extended rate-control support as provided by SDK 7 

Merged from libav commit by Yogender Gupta:
https://git.libav.org/?p=libav.git;a=commitdiff;h=70de2ea4261f860457a04e3d0c58c5543f403325
This commit is contained in:
Yogender Gupta 2016-09-24 17:55:00 +02:00 committed by Timo Rothenpieler
parent 033f98c902
commit facc19ef06
5 changed files with 69 additions and 4 deletions
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46
libavcodec/nvenc.c
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@ -724,10 +724,50 @@ static av_cold void nvenc_setup_rate_control(AVCodecContext *avctx)
ctx->encode_config.rcParams.vbvBufferSize = 2 * ctx->encode_config.rcParams.averageBitRate;
}
if (ctx->rc_lookahead > 0) {
ctx->encode_config.rcParams.enableLookahead = 1;
ctx->encode_config.rcParams.lookaheadDepth = FFMIN(ctx->rc_lookahead, 32);
if (ctx->aq) {
ctx->encode_config.rcParams.enableAQ = 1;
ctx->encode_config.rcParams.aqStrength = ctx->aq_strength;
av_log(avctx, AV_LOG_VERBOSE, "AQ enabled.\n");
}
if (ctx->temporal_aq) {
ctx->encode_config.rcParams.enableTemporalAQ = 1;
av_log(avctx, AV_LOG_VERBOSE, "Temporal AQ enabled.\n");
}
if (ctx->rc_lookahead) {
int lkd_bound = FFMIN(ctx->nb_surfaces, ctx->async_depth) -
ctx->encode_config.frameIntervalP - 4;
if (lkd_bound < 0) {
av_log(avctx, AV_LOG_WARNING,
"Lookahead not enabled. Increase buffer delay (-delay).\n");
} else {
ctx->encode_config.rcParams.enableLookahead = 1;
ctx->encode_config.rcParams.lookaheadDepth = av_clip(ctx->rc_lookahead, 0, lkd_bound);
ctx->encode_config.rcParams.disableIadapt = ctx->no_scenecut;
ctx->encode_config.rcParams.disableBadapt = !ctx->b_adapt;
av_log(avctx, AV_LOG_VERBOSE,
"Lookahead enabled: depth %d, scenecut %s, B-adapt %s.\n",
ctx->encode_config.rcParams.lookaheadDepth,
ctx->encode_config.rcParams.disableIadapt ? "disabled" : "enabled",
ctx->encode_config.rcParams.disableBadapt ? "disabled" : "enabled");
}
}
if (ctx->strict_gop) {
ctx->encode_config.rcParams.strictGOPTarget = 1;
av_log(avctx, AV_LOG_VERBOSE, "Strict GOP target enabled.\n");
}
if (ctx->nonref_p)
ctx->encode_config.rcParams.enableNonRefP = 1;
if (ctx->zerolatency)
ctx->encode_config.rcParams.zeroReorderDelay = 1;
if (ctx->quality)
ctx->encode_config.rcParams.targetQuality = ctx->quality;
}
static av_cold int nvenc_setup_h264_config(AVCodecContext *avctx)

9
libavcodec/nvenc.h
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@ -183,6 +183,15 @@ typedef struct NvencContext
int flags;
int async_depth;
int rc_lookahead;
int aq;
int no_scenecut;
int b_adapt;
int temporal_aq;
int zerolatency;
int nonref_p;
int strict_gop;
int aq_strength;
int quality;
} NvencContext;
int ff_nvenc_encode_init(AVCodecContext *avctx);

9
libavcodec/nvenc_h264.c
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@ -84,6 +84,15 @@ static const AVOption options[] = {
{ "any", "Pick the first device available", 0, AV_OPT_TYPE_CONST, { .i64 = ANY_DEVICE }, 0, 0, VE, "gpu" },
{ "list", "List the available devices", 0, AV_OPT_TYPE_CONST, { .i64 = LIST_DEVICES }, 0, 0, VE, "gpu" },
{ "delay", "Delay frame output by the given amount of frames", OFFSET(async_depth), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 0, INT_MAX, VE },
{ "no-scenecut", "When lookahead is enabled, set this to 1 to disable adaptive I-frame insertion at scene cuts", OFFSET(no_scenecut), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "b_adapt", "When lookahead is enabled, set this to 0 to disable adaptive B-frame decision", OFFSET(b_adapt), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE },
{ "spatial-aq", "set to 1 to enable Spatial AQ", OFFSET(aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "temporal-aq", "set to 1 to enable Temporal AQ", OFFSET(temporal_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "zerolatency", "Set 1 to indicate zero latency operation (no reordering delay)", OFFSET(zerolatency), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "nonref_p", "Set this to 1 to enable automatic insertion of non-reference P-frames", OFFSET(nonref_p), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "strict_gop", "Set 1 to minimize GOP-to-GOP rate fluctuations", OFFSET(strict_gop), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "aq-strength", "When Spatial AQ is enabled, this field is used to specify AQ strength. AQ strength scale is from 1 (low) - 15 (aggressive)", OFFSET(aq_strength), AV_OPT_TYPE_INT, { .i64 = 8 }, 1, 15, VE },
{ "cq", "Set target quality level (0 to 51, 0 means automatic) for constant quality mode in VBR rate control", OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 51, VE },
{ NULL }
};

7
libavcodec/nvenc_hevc.c
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@ -83,6 +83,13 @@ static const AVOption options[] = {
{ "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" },
{ "delay", "Delay frame output by the given amount of frames", OFFSET(async_depth), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 0, INT_MAX, VE },
{ "no-scenecut", "When lookahead is enabled, set this to 1 to disable adaptive I-frame insertion at scene cuts", OFFSET(no_scenecut), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "spatial_aq", "set to 1 to enable Spatial AQ", OFFSET(aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "zerolatency", "Set 1 to indicate zero latency operation (no reordering delay)", OFFSET(zerolatency), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "nonref_p", "Set this to 1 to enable automatic insertion of non-reference P-frames", OFFSET(nonref_p), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "strict_gop", "Set 1 to minimize GOP-to-GOP rate fluctuations", OFFSET(strict_gop), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "aq-strength", "When Spatial AQ is enabled, this field is used to specify AQ strength. AQ strength scale is from 1 (low) - 15 (aggressive)", OFFSET(aq_strength), AV_OPT_TYPE_INT, { .i64 = 8 }, 1, 15, VE },
{ "cq", "Set target quality level (0 to 51, 0 means automatic) for constant quality mode in VBR rate control", OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 51, VE },
{ NULL }
};

2
libavcodec/version.h
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@ -29,7 +29,7 @@
#define LIBAVCODEC_VERSION_MAJOR 57
#define LIBAVCODEC_VERSION_MINOR 58
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_MICRO 101
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \