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avformat/avisynth: implement avisynth_flags option 

Signed-off-by: Stephen Hutchinson <qyot27@gmail.com>
This commit is contained in:
Stephen Hutchinson 2022-08-30 18:34:57 -04:00
parent c49beead19
commit adead1ccd6
1 changed files with 52 additions and 0 deletions
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52
libavformat/avisynth.c
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@ -21,6 +21,7 @@
#include "libavutil/attributes.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "libavcodec/internal.h"
@ -85,7 +86,18 @@ typedef struct AviSynthLibrary {
#undef AVSC_DECLARE_FUNC
} AviSynthLibrary;
typedef enum AviSynthFlags {
AVISYNTH_FRAMEPROP_FIELD_ORDER = (1 << 0),
AVISYNTH_FRAMEPROP_RANGE = (1 << 1),
AVISYNTH_FRAMEPROP_PRIMARIES = (1 << 2),
AVISYNTH_FRAMEPROP_TRANSFER = (1 << 3),
AVISYNTH_FRAMEPROP_MATRIX = (1 << 4),
AVISYNTH_FRAMEPROP_CHROMA_LOCATION = (1 << 5),
AVISYNTH_FRAMEPROP_SAR = (1 << 6),
} AviSynthFlags;
typedef struct AviSynthContext {
const AVClass *class;
AVS_ScriptEnvironment *env;
AVS_Clip *clip;
const AVS_VideoInfo *vi;
@ -100,6 +112,8 @@ typedef struct AviSynthContext {
int error;
uint32_t flags;
/* Linked list pointers. */
struct AviSynthContext *next;
} AviSynthContext;
@ -518,6 +532,7 @@ static int avisynth_create_stream_video(AVFormatContext *s, AVStream *st)
avsmap = avs_library.avs_get_frame_props_ro(avs->env, frame);
/* Field order */
if(avs->flags & AVISYNTH_FRAMEPROP_FIELD_ORDER) {
if(avs_library.avs_prop_get_type(avs->env, avsmap, "_FieldBased") == AVS_PROPTYPE_UNSET) {
st->codecpar->field_order = AV_FIELD_UNKNOWN;
} else {
@ -535,8 +550,10 @@ static int avisynth_create_stream_video(AVFormatContext *s, AVStream *st)
st->codecpar->field_order = AV_FIELD_UNKNOWN;
}
}
}
/* Color Range */
if(avs->flags & AVISYNTH_FRAMEPROP_RANGE) {
if(avs_library.avs_prop_get_type(avs->env, avsmap, "_ColorRange") == AVS_PROPTYPE_UNSET) {
st->codecpar->color_range = AVCOL_RANGE_UNSPECIFIED;
} else {
@ -551,8 +568,10 @@ static int avisynth_create_stream_video(AVFormatContext *s, AVStream *st)
st->codecpar->color_range = AVCOL_RANGE_UNSPECIFIED;
}
}
}
/* Color Primaries */
if(avs->flags & AVISYNTH_FRAMEPROP_PRIMARIES) {
switch (avs_library.avs_prop_get_int(avs->env, avsmap, "_Primaries", 0, &error)) {
case 1:
st->codecpar->color_primaries = AVCOL_PRI_BT709;
@ -593,8 +612,10 @@ static int avisynth_create_stream_video(AVFormatContext *s, AVStream *st)
default:
st->codecpar->color_primaries = AVCOL_PRI_UNSPECIFIED;
}
}
/* Color Transfer Characteristics */
if(avs->flags & AVISYNTH_FRAMEPROP_TRANSFER) {
switch (avs_library.avs_prop_get_int(avs->env, avsmap, "_Transfer", 0, &error)) {
case 1:
st->codecpar->color_trc = AVCOL_TRC_BT709;
@ -650,8 +671,10 @@ static int avisynth_create_stream_video(AVFormatContext *s, AVStream *st)
default:
st->codecpar->color_trc = AVCOL_TRC_UNSPECIFIED;
}
}
/* Matrix coefficients */
if(avs->flags & AVISYNTH_FRAMEPROP_MATRIX) {
if(avs_library.avs_prop_get_type(avs->env, avsmap, "_Matrix") == AVS_PROPTYPE_UNSET) {
st->codecpar->color_space = AVCOL_SPC_UNSPECIFIED;
} else {
@ -702,8 +725,10 @@ static int avisynth_create_stream_video(AVFormatContext *s, AVStream *st)
st->codecpar->color_space = AVCOL_SPC_UNSPECIFIED;
}
}
}
/* Chroma Location */
if(avs->flags & AVISYNTH_FRAMEPROP_CHROMA_LOCATION) {
if(avs_library.avs_prop_get_type(avs->env, avsmap, "_ChromaLocation") == AVS_PROPTYPE_UNSET) {
st->codecpar->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
} else {
@ -730,11 +755,14 @@ static int avisynth_create_stream_video(AVFormatContext *s, AVStream *st)
st->codecpar->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
}
}
}
/* Sample aspect ratio */
if(avs->flags & AVISYNTH_FRAMEPROP_SAR) {
sar_num = avs_library.avs_prop_get_int(avs->env, avsmap, "_SARNum", 0, &error);
sar_den = avs_library.avs_prop_get_int(avs->env, avsmap, "_SARDen", 0, &error);
st->sample_aspect_ratio = (AVRational){ sar_num, sar_den };
}
avs_library.avs_release_video_frame(frame);
} else {
@ -1140,6 +1168,29 @@ static int avisynth_read_seek(AVFormatContext *s, int stream_index,
return 0;
}
#define AVISYNTH_FRAMEPROP_DEFAULT AVISYNTH_FRAMEPROP_FIELD_ORDER | AVISYNTH_FRAMEPROP_RANGE | \
AVISYNTH_FRAMEPROP_PRIMARIES | AVISYNTH_FRAMEPROP_TRANSFER | \
AVISYNTH_FRAMEPROP_MATRIX | AVISYNTH_FRAMEPROP_CHROMA_LOCATION
#define OFFSET(x) offsetof(AviSynthContext, x)
static const AVOption avisynth_options[] = {
{ "avisynth_flags", "set flags related to reading frame properties from script (AviSynth+ v3.7.1 or higher)", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = AVISYNTH_FRAMEPROP_DEFAULT}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM, "flags" },
{ "field_order", "read field order", 0, AV_OPT_TYPE_CONST, {.i64 = AVISYNTH_FRAMEPROP_FIELD_ORDER}, 0, 1, AV_OPT_FLAG_DECODING_PARAM, "flags" },
{ "range", "read color range", 0, AV_OPT_TYPE_CONST, {.i64 = AVISYNTH_FRAMEPROP_RANGE}, 0, 1, AV_OPT_FLAG_DECODING_PARAM, "flags" },
{ "primaries", "read color primaries", 0, AV_OPT_TYPE_CONST, {.i64 = AVISYNTH_FRAMEPROP_PRIMARIES}, 0, 1, AV_OPT_FLAG_DECODING_PARAM, "flags" },
{ "transfer", "read color transfer characteristics", 0, AV_OPT_TYPE_CONST, {.i64 = AVISYNTH_FRAMEPROP_TRANSFER}, 0, 1, AV_OPT_FLAG_DECODING_PARAM, "flags" },
{ "matrix", "read matrix coefficients", 0, AV_OPT_TYPE_CONST, {.i64 = AVISYNTH_FRAMEPROP_MATRIX}, 0, 1, AV_OPT_FLAG_DECODING_PARAM, "flags" },
{ "chroma_location", "read chroma location", 0, AV_OPT_TYPE_CONST, {.i64 = AVISYNTH_FRAMEPROP_CHROMA_LOCATION}, 0, 1, AV_OPT_FLAG_DECODING_PARAM, "flags" },
{ "sar", "read sample aspect ratio", 0, AV_OPT_TYPE_CONST, {.i64 = AVISYNTH_FRAMEPROP_SAR}, 0, 1, AV_OPT_FLAG_DECODING_PARAM, "flags" },
{ NULL },
};
static const AVClass avisynth_demuxer_class = {
.class_name = "AviSynth demuxer",
.item_name = av_default_item_name,
.option = avisynth_options,
.version = LIBAVUTIL_VERSION_INT,
};
const AVInputFormat ff_avisynth_demuxer = {
.name = "avisynth",
.long_name = NULL_IF_CONFIG_SMALL("AviSynth script"),
@ -1149,4 +1200,5 @@ const AVInputFormat ff_avisynth_demuxer = {
.read_close = avisynth_read_close,
.read_seek = avisynth_read_seek,
.extensions = "avs",
.priv_class = &avisynth_demuxer_class,
};