[FFmpeg-devel] [PATCH 2/2] libavcodec/libaomenc.c: Add super-resolution options to libaom wrapper
Wang Cao
doubleecao at gmail.com
Tue Mar 3 23:43:21 EET 2020
From: Wang Cao <doubleecao at google.com>
Signed-off-by: Wang Cao <wangcao at google.com>
---
doc/encoders.texi | 39 +++++++++++++++++++++++++++++++++++++++
libavcodec/libaomenc.c | 38 ++++++++++++++++++++++++++++++++++++++
2 files changed, 77 insertions(+)
diff --git a/doc/encoders.texi b/doc/encoders.texi
index 4215f237bd..ac00c305d5 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -1608,6 +1608,45 @@ Enable the use of global motion for block prediction. Default is true.
Enable block copy mode for intra block prediction. This mode is
useful for screen content. Default is true.
+ at item enable-superres (@emph{boolean})
+Enable super-resolution during the encoding process.
+
+ at item superres-mode (@emph{mode})
+Select super-resultion mode
+
+ at table @option
+ at item none (@emph{0})
+No frame superres allowed
+
+ at item fixed (@emph{1})
+All frames are coded at the specified scale and super-resolved
+
+ at item random (@emph{2})
+All frames are coded at a random scale and super-resolved.
+
+ at item qthresh (@emph{3})
+Superres scale for a frame is determined based on q_index
+
+ at item auto (@emph{4})
+Automatically select superres for appropriate frames
+ at end table
+
+ at item superres_denominator
+The denominator for superres to use when @option{superres-mode} is @option{fixed}. Valid value
+ranges from 8 to 16.
+
+ at item superres_kf_denominator
+The denominator for superres to use on key frames is fixed when
+ at option{superres-mode} is @option{fixed}. Valid value ranges from 8 to 16.
+
+ at item superres_qthresh
+The q level threshold after which superres is used when @option{superres-mode} is
+ at option{qthresh}. Valid value ranges from 1 to 63.
+
+ at item superres_kf_qthresh
+The q level threshold after which superres is used for key frames when
+ at option{superres-mode} is @option{qthresh}. Valid value ranges from 1 to 63.
+
@end table
@section libkvazaar
diff --git a/libavcodec/libaomenc.c b/libavcodec/libaomenc.c
index 7fd624c470..f1578db5e6 100644
--- a/libavcodec/libaomenc.c
+++ b/libavcodec/libaomenc.c
@@ -95,6 +95,12 @@ typedef struct AOMEncoderContext {
int enable_restoration;
int usage;
int tune;
+ int enable_superres;
+ int superres_mode;
+ int superres_denominator;
+ int superres_qthresh;
+ int superres_kf_denominator;
+ int superres_kf_qthresh;
} AOMContext;
static const char *const ctlidstr[] = {
@@ -134,6 +140,7 @@ static const char *const ctlidstr[] = {
#endif
[AV1E_SET_ENABLE_CDEF] = "AV1E_SET_ENABLE_CDEF",
[AOME_SET_TUNING] = "AOME_SET_TUNING",
+ [AV1E_SET_ENABLE_SUPERRES] = "AV1E_SET_ENABLE_SUPERRES",
};
static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc)
@@ -203,6 +210,13 @@ static av_cold void dump_enc_cfg(AVCodecContext *avctx,
width, "tile_width_count:", cfg->tile_width_count,
width, "tile_height_count:", cfg->tile_height_count);
av_log(avctx, level, "\n");
+ av_log(avctx, level, "super resolution settings\n"
+ "%*s%u\n %*s%u\n %*s%u\n %*s%u\n %*s%u\n ",
+ width, "rc_superres_mode:", cfg->rc_superres_mode,
+ width, "rc_superres_denominator:",cfg->rc_superres_denominator,
+ width, "rc_superres_qthresh:", cfg->rc_superres_qthresh,
+ width, "rc_superres_kf_denominator:", cfg->rc_superres_kf_denominator,
+ width, "rc_superres_kf_qthresh:", cfg->rc_superres_kf_qthresh);
}
static void coded_frame_add(void *list, struct FrameListData *cx_frame)
@@ -545,6 +559,17 @@ static av_cold int aom_init(AVCodecContext *avctx,
return AVERROR(EINVAL);
}
+ if (ctx->superres_mode >= 0)
+ enccfg.rc_superres_mode = ctx->superres_mode;
+ if (ctx->superres_qthresh > 0)
+ enccfg.rc_superres_qthresh = ctx->superres_qthresh;
+ if (ctx->superres_kf_qthresh > 0)
+ enccfg.rc_superres_kf_qthresh = ctx->superres_kf_qthresh;
+ if (ctx->superres_denominator >= 0)
+ enccfg.rc_superres_denominator = ctx->superres_denominator;
+ if (ctx->superres_kf_denominator >= 0)
+ enccfg.rc_superres_kf_denominator = ctx->superres_kf_denominator;
+
dump_enc_cfg(avctx, &enccfg);
enccfg.g_w = avctx->width;
@@ -687,6 +712,8 @@ static av_cold int aom_init(AVCodecContext *avctx,
// codec control failures are currently treated only as warnings
av_log(avctx, AV_LOG_DEBUG, "aom_codec_control\n");
codecctl_int(avctx, AOME_SET_CPUUSED, ctx->cpu_used);
+ if (ctx->enable_superres >= 0)
+ codecctl_int(avctx, AV1E_SET_ENABLE_SUPERRES, ctx->enable_superres);
if (ctx->auto_alt_ref >= 0)
codecctl_int(avctx, AOME_SET_ENABLEAUTOALTREF, ctx->auto_alt_ref);
if (ctx->arnr_max_frames >= 0)
@@ -1103,6 +1130,17 @@ static const AVOption options[] = {
{ "tune", "The metric that encoder tunes for", OFFSET(tune), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, VE, "tune"},
{ "psnr", "PSNR as distortion metric", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, 0, 0, VE, "tune"},
{ "ssim", "SSIM as distortion metric", 0, AV_OPT_TYPE_CONST, {.i64 = 1}, 0, 0, VE, "tune"},
+ { "enable-superres", "Enable super-resolution mode", OFFSET(enable_superres), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, VE},
+ { "superres-mode", "Select super-resultion mode", OFFSET(superres_mode), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 4, VE, "superres_mode"},
+ { "none", "No frame superres allowed", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, 0, 0, VE, "superres_mode"},
+ { "fixed", "All frames are coded at the specified scale and super-resolved", 0, AV_OPT_TYPE_CONST, {.i64 = 1}, 0, 0, VE, "superres_mode"},
+ { "random", "All frames are coded at a random scale and super-resolved.", 0, AV_OPT_TYPE_CONST, {.i64 = 2}, 0, 0, VE, "superres_mode"},
+ { "qthresh", "Superres scale for a frame is determined based on q_index", 0, AV_OPT_TYPE_CONST, {.i64 = 3}, 0, 0, VE, "superres_mode"},
+ { "auto", "Automatically select superres for appropriate frames", 0, AV_OPT_TYPE_CONST, {.i64 = 4}, 0, 0, VE, "superres_mode"},
+ { "superres-denominator", "The denominator for superres to use.", OFFSET(superres_denominator), AV_OPT_TYPE_INT, {.i64 = 8}, 8, 16, VE},
+ { "superres-qthresh", "The q level threshold after which superres is used", OFFSET(superres_qthresh), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, VE},
+ { "superres-kf-denominator", "The denominator for superres to use on key frames.", OFFSET(superres_kf_denominator), AV_OPT_TYPE_INT, {.i64 = 8}, 8, 16, VE},
+ { "superres-kf-qthresh", "The q level threshold after which superres is used for key frames.", OFFSET(superres_kf_qthresh), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, VE},
{ NULL },
};
--
2.25.0.265.gbab2e86ba0-goog
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