[FFmpeg-devel] [PATCH v2 06/11] avcodec/dovi_rpu: make `enable` also affect decoding

[Niklas Haas <ffmpeg@haasn.xyz>]

From: Niklas Haas <git@haasn.dev>

This could be used by codecs to selectively disable parsing Dolby Vision
RPUs, and is cheap to support.
---
 libavcodec/av1dec.c   | 1 +
 libavcodec/dovi_rpu.c | 6 ++++++
 libavcodec/dovi_rpu.h | 2 ++
 libavcodec/hevcdec.c  | 1 +
 libavcodec/libdav1d.c | 1 +
 5 files changed, 11 insertions(+)

diff --git a/libavcodec/av1dec.c b/libavcodec/av1dec.c
index 4c1405df779..20865b4f129 100644
--- a/libavcodec/av1dec.c
+++ b/libavcodec/av1dec.c
@@ -1551,6 +1551,7 @@ static void av1_decode_flush(AVCodecContext *avctx)
 static const AVOption av1_options[] = {
     { "operating_point",  "Select an operating point of the scalable bitstream",
                           OFFSET(operating_point), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, AV1_MAX_OPERATING_POINTS - 1, VD },
+    { "dolbyvision", "Decode Dolby Vision RPUs", OFFSET(dovi.enable), AV_OPT_TYPE_BOOL, {.i64 = 1 }, 0, 1, VD },
     { NULL }
 };
 
diff --git a/libavcodec/dovi_rpu.c b/libavcodec/dovi_rpu.c
index d3a284c150d..54994188a96 100644
--- a/libavcodec/dovi_rpu.c
+++ b/libavcodec/dovi_rpu.c
@@ -90,6 +90,9 @@ int ff_dovi_attach_side_data(DOVIContext *s, AVFrame *frame)
     AVDOVIMetadata *dovi;
     size_t dovi_size, ext_sz;
 
+    if (!s->enable)
+        return 0;
+
     if (!s->mapping || !s->color)
         return 0; /* incomplete dovi metadata */
 
@@ -558,6 +561,9 @@ int ff_dovi_rpu_parse(DOVIContext *s, const uint8_t *rpu, size_t rpu_size,
     uint8_t use_nlq;
     uint8_t profile;
 
+    if (!s->enable)
+        return 0;
+
     if (rpu_size < 5)
         goto fail;
 
diff --git a/libavcodec/dovi_rpu.h b/libavcodec/dovi_rpu.h
index 56395707369..8dc69a2733d 100644
--- a/libavcodec/dovi_rpu.h
+++ b/libavcodec/dovi_rpu.h
@@ -37,6 +37,8 @@ typedef struct DOVIContext {
      *
      * For encoding, FF_DOVI_AUTOMATIC enables Dolby Vision only if
      * avctx->decoded_side_data contains an AVDOVIMetadata.
+     *
+     * For decoding, FF_DOVI_AUTOMATIC has the same meaning as 1.
      */
 #define FF_DOVI_AUTOMATIC -1
     int enable;
diff --git a/libavcodec/hevcdec.c b/libavcodec/hevcdec.c
index 4bc9e2afc1d..651773260e3 100644
--- a/libavcodec/hevcdec.c
+++ b/libavcodec/hevcdec.c
@@ -3689,6 +3689,7 @@ static const AVOption options[] = {
         AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, PAR },
     { "strict-displaywin", "stricly apply default display window size", OFFSET(apply_defdispwin),
         AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, PAR },
+    { "dolbyvision", "Decode Dolby Vision RPUs", OFFSET(dovi_ctx.enable), AV_OPT_TYPE_BOOL, {.i64 = 1 }, 0, 1, PAR },
     { NULL },
 };
 
diff --git a/libavcodec/libdav1d.c b/libavcodec/libdav1d.c
index 09fe767fb86..f9e1a181fc3 100644
--- a/libavcodec/libdav1d.c
+++ b/libavcodec/libdav1d.c
@@ -674,6 +674,7 @@ static const AVOption libdav1d_options[] = {
     { "filmgrain", "Apply Film Grain", OFFSET(apply_grain), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VD | AV_OPT_FLAG_DEPRECATED },
     { "oppoint",  "Select an operating point of the scalable bitstream", OFFSET(operating_point), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 31, VD },
     { "alllayers", "Output all spatial layers", OFFSET(all_layers), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VD },
+    { "dolbyvision", "Decode Dolby Vision RPUs", OFFSET(dovi.enable), AV_OPT_TYPE_BOOL, {.i64 = 1 }, 0, 1, VD },
     { NULL }
 };
 
-- 
2.44.0

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