AV1 support lossless encoding.
In this patch, I added a command line flag to enable it.
---
libavcodec/libaomenc.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/libavcodec/libaomenc.c b/libavcodec/libaomenc.c
index fb61ce82e2..4a7f4b662a 100644
--- a/libavcodec/libaomenc.c
+++ b/libavcodec/libaomenc.c
@@ -94,6 +94,7 @@ typedef struct AOMEncoderContext {
int enable_intrabc;
int enable_restoration;
int usage;
+ int lossless;
} AOMContext;
static const char *const ctlidstr[] = {
@@ -130,6 +131,9 @@ static const char *const ctlidstr[] = {
#endif
#ifdef AOM_CTRL_AV1E_SET_ENABLE_INTRABC
[AV1E_SET_ENABLE_INTRABC] = "AV1E_SET_ENABLE_INTRABC",
+#endif
+#ifdef AOM_CTRL_AV1E_SET_LOSSLESS
+ [AV1E_SET_LOSSLESS] = "AOM_CTRL_AV1E_SET_LOSSLESS",
#endif
[AV1E_SET_ENABLE_CDEF] = "AV1E_SET_ENABLE_CDEF",
};
@@ -154,7 +158,7 @@ static av_cold void dump_enc_cfg(AVCodecContext *avctx,
av_log(avctx, level, "aom_codec_enc_cfg\n");
av_log(avctx, level, "generic settings\n"
" %*s%u\n %*s%u\n %*s%u\n %*s%u\n %*s%u\n"
- " %*s%u\n %*s%u\n"
+ " %*s%u\n %*s%u\n %*s%u\n"
" %*s{%u/%u}\n %*s%u\n %*s%d\n %*s%u\n",
width, "g_usage:", cfg->g_usage,
width, "g_threads:", cfg->g_threads,
@@ -163,6 +167,7 @@ static av_cold void dump_enc_cfg(AVCodecContext *avctx,
width, "g_h:", cfg->g_h,
width, "g_bit_depth:", cfg->g_bit_depth,
width, "g_input_bit_depth:", cfg->g_input_bit_depth,
+ width, "monochrome:", cfg->monochrome,
width, "g_timebase:", cfg->g_timebase.num,
cfg->g_timebase.den,
width, "g_error_resilient:", cfg->g_error_resilient,
width, "g_pass:", cfg->g_pass,
@@ -751,6 +756,10 @@ static av_cold int aom_init(AVCodecContext *avctx,
codecctl_int(avctx, AV1E_SET_MAX_REFERENCE_FRAMES, avctx->refs);
}
#endif
+#ifdef AOM_CTRL_AV1E_SET_LOSSLESS
+ if (ctx->lossless >= 0)
+ codecctl_int(avctx, AV1E_SET_LOSSLESS, ctx->lossless);
+#endif
#ifdef AOM_CTRL_AV1E_SET_ROW_MT
if (ctx->row_mt >= 0)
codecctl_int(avctx, AV1E_SET_ROW_MT, ctx->row_mt);
@@ -1132,6 +1141,7 @@ static const AVOption options[] = {
{ "usage", "Quality and compression efficiency vs speed
tradeof", OFFSET(usage), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, VE, "usage"},
{ "good", "Good quality", 0, AV_OPT_TYPE_CONST, {.i64 = 0
/* AOM_USAGE_GOOD_QUALITY */}, 0, 0, VE, "usage"},
{ "realtime", "Realtime encoding", 0, AV_OPT_TYPE_CONST, {.i64 = 1
/* AOM_USAGE_REALTIME */}, 0, 0, VE, "usage"},
+ { "lossless", "Lossless encoding", OFFSET(lossless),
AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, VE},
{ NULL },
};
--
2.20.1
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
