El 19/7/25 a las 18:26, bernat.arlan...@gmail.com escribió:
From: Bernat Arlandis <bera...@hotmail.com>
---
libavcodec/libtheoraenc.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/libavcodec/libtheoraenc.c b/libavcodec/libtheoraenc.c
index eb94458639..de2b913634 100644
--- a/libavcodec/libtheoraenc.c
+++ b/libavcodec/libtheoraenc.c
@@ -37,6 +37,7 @@
#include "libavutil/pixdesc.h"
#include "libavutil/log.h"
#include "libavutil/base64.h"
+#include "libavutil/opt.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "encode.h"
@@ -45,6 +46,7 @@
#include <theora/theoraenc.h>
typedef struct TheoraContext {
+ AVClass *av_class; /**< class for AVOptions
*/
th_enc_ctx *t_state;
uint8_t *stats;
int stats_size;
@@ -52,8 +54,21 @@ typedef struct TheoraContext {
int uv_hshift;
int uv_vshift;
int keyframe_mask;
+ int speed_level;
} TheoraContext;
+static const AVOption options[] = {
+ { "speed_level", "Sets the encoding speed level", offsetof(TheoraContext,
speed_level), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, AV_OPT_FLAG_VIDEO_PARAM |
AV_OPT_FLAG_ENCODING_PARAM },
+ { NULL }
+};
+
+static const AVClass theora_class = {
+ .class_name = "libtheora",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
/** Concatenate an ogg_packet into the extradata. */
static int concatenate_packet(unsigned int* offset,
AVCodecContext* avc_context,
@@ -244,6 +259,17 @@ static av_cold int encode_init(AVCodecContext* avc_context)
return AVERROR_EXTERNAL;
}
+ // Set encoding speed level
+ if (h->speed_level != -1) {
+ int max_speed_level;
+ int speed_level = h->speed_level;
+ th_encode_ctl(h->t_state, TH_ENCCTL_GET_SPLEVEL_MAX, &max_speed_level,
sizeof(max_speed_level));
+ if (speed_level > max_speed_level) {
+ speed_level = max_speed_level;
+ }
+ th_encode_ctl(h->t_state, TH_ENCCTL_SET_SPLEVEL, &speed_level,
sizeof(speed_level));
+ }
+
// need to enable 2 pass (via TH_ENCCTL_2PASS_) before encoding headers
if (avc_context->flags & AV_CODEC_FLAG_PASS1) {
if ((ret = get_stats(avc_context, 0)) < 0)
@@ -389,6 +415,7 @@ const FFCodec ff_libtheora_encoder = {
.close = encode_close,
FF_CODEC_ENCODE_CB(encode_frame),
CODEC_PIXFMTS(AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P),
+ .p.priv_class = &theora_class,
.color_ranges = AVCOL_RANGE_MPEG,
.p.wrapper_name = "libtheora",
};
base-commit: bedfb6eca402037f5cbb115fa767d106b8c14f1c
I've used -1 for the default library value, but there might be a better
way to tell the code to use the default value without exposing this
value to the user. I just don't know how.
--
Bernat Arlandis
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