[FFmpeg-cvslog] avisynth: use AviSynth+'s frame properties to set various fields
Stephen Hutchinson
git at videolan.org
Mon Feb 14 01:33:05 EET 2022
ffmpeg | branch: master | Stephen Hutchinson <qyot27 at gmail.com> | Thu Sep 23 01:35:08 2021 -0400| [af69e4c24120ad03f9838a6f7fd39a86d775ccb2] | committer: Stephen Hutchinson
avisynth: use AviSynth+'s frame properties to set various fields
* Field Order
* Chroma Location
* Color Transfer Characteristics
* Color Range
* Color Primaries
* Matrix Coefficients
The existing TFF/BFF detection is retained as a fallback for
older versions of AviSynth that can't access frame properties.
The other properties have no legacy equivalent to detect them.
Signed-off-by: Stephen Hutchinson <qyot27 at gmail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=af69e4c24120ad03f9838a6f7fd39a86d775ccb2
---
libavformat/avisynth.c | 263 ++++++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 250 insertions(+), 13 deletions(-)
diff --git a/libavformat/avisynth.c b/libavformat/avisynth.c
index 1e862a6a85..8bc39869a3 100644
--- a/libavformat/avisynth.c
+++ b/libavformat/avisynth.c
@@ -19,6 +19,8 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <stdbool.h>
+
#include "libavutil/attributes.h"
#include "libavutil/internal.h"
@@ -76,6 +78,9 @@ typedef struct AviSynthLibrary {
AVSC_DECLARE_FUNC(avs_get_row_size_p);
AVSC_DECLARE_FUNC(avs_is_planar_rgb);
AVSC_DECLARE_FUNC(avs_is_planar_rgba);
+ AVSC_DECLARE_FUNC(avs_get_frame_props_ro);
+ AVSC_DECLARE_FUNC(avs_prop_get_int);
+ AVSC_DECLARE_FUNC(avs_get_env_property);
#undef AVSC_DECLARE_FUNC
} AviSynthLibrary;
@@ -153,6 +158,9 @@ static av_cold int avisynth_load_library(void)
LOAD_AVS_FUNC(avs_get_row_size_p, 1);
LOAD_AVS_FUNC(avs_is_planar_rgb, 1);
LOAD_AVS_FUNC(avs_is_planar_rgba, 1);
+ LOAD_AVS_FUNC(avs_get_frame_props_ro, 1);
+ LOAD_AVS_FUNC(avs_prop_get_int, 1);
+ LOAD_AVS_FUNC(avs_get_env_property, 1);
#undef LOAD_AVS_FUNC
atexit(avisynth_atexit_handler);
@@ -236,6 +244,10 @@ static av_cold void avisynth_atexit_handler(void)
static int avisynth_create_stream_video(AVFormatContext *s, AVStream *st)
{
AviSynthContext *avs = s->priv_data;
+ const AVS_Map *avsmap;
+ AVS_VideoFrame *frame;
+ int framedata, error;
+ bool frameprop;
int planar = 0; // 0: packed, 1: YUV, 2: Y8, 3: Planar RGB, 4: YUVA, 5: Planar RGBA
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
@@ -251,19 +263,6 @@ static int avisynth_create_stream_video(AVFormatContext *s, AVStream *st)
avpriv_set_pts_info(st, 32, avs->vi->fps_denominator, avs->vi->fps_numerator);
- st->codecpar->field_order = AV_FIELD_UNKNOWN;
- /* AviSynth works with frame-based video, detecting field order can
- * only work when avs_is_field_based returns 'false'. */
- av_log(s, AV_LOG_TRACE, "avs_is_field_based: %d\n", avs_is_field_based(avs->vi));
- if (avs_is_field_based(avs->vi) == 0) {
- if (avs_is_tff(avs->vi)) {
- st->codecpar->field_order = AV_FIELD_TT;
- }
- else if (avs_is_bff(avs->vi)) {
- st->codecpar->field_order = AV_FIELD_BB;
- }
- }
-
switch (avs->vi->pixel_type) {
/* 10~16-bit YUV pix_fmts (AviSynth+) */
case AVS_CS_YUV444P10:
@@ -499,6 +498,244 @@ static int avisynth_create_stream_video(AVFormatContext *s, AVStream *st)
avs->n_planes = 1;
avs->planes = avs_planes_packed;
}
+
+ /* Read AviSynth+'s frame properties to set additional info.
+ *
+ * Due to a bug preventing the C interface from accessing frame
+ * properties in earlier versions of interface version 8, only
+ * enable this if we detect version 8.1 at the minimum. */
+
+ if (!avs_library.avs_get_env_property) {
+ av_log(s, AV_LOG_TRACE, "%s\n",
+ "avs_get_env_property does not exist in AviSynth library; frame properties won't be checked.");
+ frameprop = false;
+ } else {
+ if (avs_library.avs_get_env_property(avs->env, AVS_AEP_INTERFACE_BUGFIX)) {
+ av_log(s, AV_LOG_TRACE, "%s\n", "Using interface version 8.1 or higher, reading frame properties.");
+ frameprop = true;
+ } else {
+ av_log(s, AV_LOG_TRACE, "%s\n", "Using interface version 8.0, need 8.1+ to read frame properties.");
+ frameprop = false;
+ }
+ }
+
+ if (frameprop = true) {
+
+ frame = avs_library.avs_get_frame(avs->clip, framedata);
+ avsmap = avs_library.avs_get_frame_props_ro(avs->env, frame);
+
+ /* Field order */
+ switch (avs_library.avs_prop_get_int(avs->env, avsmap, "_FieldBased", 0, &error)) {
+ case 0:
+ st->codecpar->field_order = AV_FIELD_PROGRESSIVE;
+ break;
+ case 1:
+ st->codecpar->field_order = AV_FIELD_BB;
+ break;
+ case 2:
+ st->codecpar->field_order = AV_FIELD_TT;
+ break;
+ default:
+ st->codecpar->field_order = AV_FIELD_UNKNOWN;
+ }
+
+ /* Color Range */
+ switch (avs_library.avs_prop_get_int(avs->env, avsmap, "_ColorRange", 0, &error)) {
+ case 0:
+ st->codecpar->color_range = AVCOL_RANGE_JPEG;
+ break;
+ case 1:
+ st->codecpar->color_range = AVCOL_RANGE_MPEG;
+ break;
+ default:
+ st->codecpar->color_range = AVCOL_RANGE_UNSPECIFIED;
+ }
+
+ /* Color Primaries */
+ switch (avs_library.avs_prop_get_int(avs->env, avsmap, "_Primaries", 0, &error)) {
+ case 1:
+ st->codecpar->color_primaries = AVCOL_PRI_BT709;
+ break;
+ case 2:
+ st->codecpar->color_primaries = AVCOL_PRI_UNSPECIFIED;
+ break;
+ case 4:
+ st->codecpar->color_primaries = AVCOL_PRI_BT470M;
+ break;
+ case 5:
+ st->codecpar->color_primaries = AVCOL_PRI_BT470BG;
+ break;
+ case 6:
+ st->codecpar->color_primaries = AVCOL_PRI_SMPTE170M;
+ break;
+ case 7:
+ st->codecpar->color_primaries = AVCOL_PRI_SMPTE240M;
+ break;
+ case 8:
+ st->codecpar->color_primaries = AVCOL_PRI_FILM;
+ break;
+ case 9:
+ st->codecpar->color_primaries = AVCOL_PRI_BT2020;
+ break;
+ case 10:
+ st->codecpar->color_primaries = AVCOL_PRI_SMPTE428;
+ break;
+ case 11:
+ st->codecpar->color_primaries = AVCOL_PRI_SMPTE431;
+ break;
+ case 12:
+ st->codecpar->color_primaries = AVCOL_PRI_SMPTE432;
+ break;
+ case 22:
+ st->codecpar->color_primaries = AVCOL_PRI_EBU3213;
+ break;
+ default:
+ st->codecpar->color_primaries = AVCOL_PRI_UNSPECIFIED;
+ }
+
+ /* Color Transfer Characteristics */
+ switch (avs_library.avs_prop_get_int(avs->env, avsmap, "_Transfer", 0, &error)) {
+ case 1:
+ st->codecpar->color_trc = AVCOL_TRC_BT709;
+ break;
+ case 2:
+ st->codecpar->color_trc = AVCOL_TRC_UNSPECIFIED;
+ break;
+ case 4:
+ st->codecpar->color_trc = AVCOL_TRC_GAMMA22;
+ break;
+ case 5:
+ st->codecpar->color_trc = AVCOL_TRC_GAMMA28;
+ break;
+ case 6:
+ st->codecpar->color_trc = AVCOL_TRC_SMPTE170M;
+ break;
+ case 7:
+ st->codecpar->color_trc = AVCOL_TRC_SMPTE240M;
+ break;
+ case 8:
+ st->codecpar->color_trc = AVCOL_TRC_LINEAR;
+ break;
+ case 9:
+ st->codecpar->color_trc = AVCOL_TRC_LOG;
+ break;
+ case 10:
+ st->codecpar->color_trc = AVCOL_TRC_LOG_SQRT;
+ break;
+ case 11:
+ st->codecpar->color_trc = AVCOL_TRC_IEC61966_2_4;
+ break;
+ case 12:
+ st->codecpar->color_trc = AVCOL_TRC_BT1361_ECG;
+ break;
+ case 13:
+ st->codecpar->color_trc = AVCOL_TRC_IEC61966_2_1;
+ break;
+ case 14:
+ st->codecpar->color_trc = AVCOL_TRC_BT2020_10;
+ break;
+ case 15:
+ st->codecpar->color_trc = AVCOL_TRC_BT2020_12;
+ break;
+ case 16:
+ st->codecpar->color_trc = AVCOL_TRC_SMPTE2084;
+ break;
+ case 17:
+ st->codecpar->color_trc = AVCOL_TRC_SMPTE428;
+ break;
+ case 18:
+ st->codecpar->color_trc = AVCOL_TRC_ARIB_STD_B67;
+ break;
+ default:
+ st->codecpar->color_trc = AVCOL_TRC_UNSPECIFIED;
+ }
+
+ /* Matrix coefficients */
+ switch (avs_library.avs_prop_get_int(avs->env, avsmap, "_Matrix", 0, &error)) {
+ case 0:
+ st->codecpar->color_space = AVCOL_SPC_RGB;
+ break;
+ case 1:
+ st->codecpar->color_space = AVCOL_SPC_BT709;
+ break;
+ case 2:
+ st->codecpar->color_space = AVCOL_SPC_UNSPECIFIED;
+ break;
+ case 4:
+ st->codecpar->color_space = AVCOL_SPC_FCC;
+ break;
+ case 5:
+ st->codecpar->color_space = AVCOL_SPC_BT470BG;
+ break;
+ case 6:
+ st->codecpar->color_space = AVCOL_SPC_SMPTE170M;
+ break;
+ case 7:
+ st->codecpar->color_space = AVCOL_SPC_SMPTE240M;
+ break;
+ case 8:
+ st->codecpar->color_space = AVCOL_SPC_YCGCO;
+ break;
+ case 9:
+ st->codecpar->color_space = AVCOL_SPC_BT2020_NCL;
+ break;
+ case 10:
+ st->codecpar->color_space = AVCOL_SPC_BT2020_CL;
+ break;
+ case 11:
+ st->codecpar->color_space = AVCOL_SPC_SMPTE2085;
+ break;
+ case 12:
+ st->codecpar->color_space = AVCOL_SPC_CHROMA_DERIVED_NCL;
+ break;
+ case 13:
+ st->codecpar->color_space = AVCOL_SPC_CHROMA_DERIVED_CL;
+ break;
+ case 14:
+ st->codecpar->color_space = AVCOL_SPC_ICTCP;
+ break;
+ default:
+ st->codecpar->color_space = AVCOL_SPC_UNSPECIFIED;
+ }
+
+ /* Chroma Location */
+ switch (avs_library.avs_prop_get_int(avs->env, avsmap, "_ChromaLocation", 0, &error)) {
+ case 0:
+ st->codecpar->chroma_location = AVCHROMA_LOC_LEFT;
+ break;
+ case 1:
+ st->codecpar->chroma_location = AVCHROMA_LOC_CENTER;
+ break;
+ case 2:
+ st->codecpar->chroma_location = AVCHROMA_LOC_TOPLEFT;
+ break;
+ case 3:
+ st->codecpar->chroma_location = AVCHROMA_LOC_TOP;
+ break;
+ case 4:
+ st->codecpar->chroma_location = AVCHROMA_LOC_BOTTOMLEFT;
+ break;
+ case 5:
+ st->codecpar->chroma_location = AVCHROMA_LOC_BOTTOM;
+ break;
+ default:
+ st->codecpar->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
+ }
+ } else {
+ st->codecpar->field_order = AV_FIELD_UNKNOWN;
+ /* AviSynth works with frame-based video, detecting field order can
+ * only work when avs_is_field_based returns 'false'. */
+ av_log(s, AV_LOG_TRACE, "avs_is_field_based: %d\n", avs_is_field_based(avs->vi));
+ if (avs_is_field_based(avs->vi) == 0) {
+ if (avs_is_tff(avs->vi)) {
+ st->codecpar->field_order = AV_FIELD_TT;
+ }
+ else if (avs_is_bff(avs->vi)) {
+ st->codecpar->field_order = AV_FIELD_BB;
+ }
+ }
+ }
+
return 0;
}
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