[FFmpeg-devel] [PATCH] avcodec/dovi - disable metadata compression by default

[Cosmin Stejerean]

> On May 21, 2024, at 3:19 AM, Niklas Haas <ffmpeg at haasn.xyz> wrote:
> 
> On Tue, 21 May 2024 04:03:43 +0000 Cosmin Stejerean via ffmpeg-devel <ffmpeg-devel at ffmpeg.org> wrote:
>> 
>> diff --git a/libavcodec/libaomenc.c b/libavcodec/libaomenc.c
>> index dec74ebecd..c6104f5522 100644
>> --- a/libavcodec/libaomenc.c
>> +++ b/libavcodec/libaomenc.c
>> @@ -1489,6 +1489,7 @@ static const AVOption options[] = {
>>     { "still-picture", "Encode in single frame mode (typically used for still AVIF images).", OFFSET(still_picture), AV_OPT_TYPE_BOOL, {.i64 = 0}, -1, 1, VE },
>>     { "dolbyvision",     "Enable Dolby Vision RPU coding", OFFSET(dovi.enable), AV_OPT_TYPE_BOOL, {.i64 = FF_DOVI_AUTOMATIC }, -1, 1, VE, .unit = "dovi" },
>>     {   "auto", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_DOVI_AUTOMATIC}, .flags = VE, .unit = "dovi" },
>> +    { "dv_enable_compression", "Enable Dolby Vision metadata compression", OFFSET(dovi.enable_compression), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, VE },
>>     { "enable-rect-partitions", "Enable rectangular partitions", OFFSET(enable_rect_partitions), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, VE},
>>     { "enable-1to4-partitions", "Enable 1:4/4:1 partitions",     OFFSET(enable_1to4_partitions), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, VE},
>>     { "enable-ab-partitions",   "Enable ab shape partitions",    OFFSET(enable_ab_partitions),   AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, VE},
>> diff --git a/libavcodec/libsvtav1.c b/libavcodec/libsvtav1.c
>> index 2fef8c8971..86bb6686dd 100644
>> --- a/libavcodec/libsvtav1.c
>> +++ b/libavcodec/libsvtav1.c
>> @@ -733,6 +733,7 @@ static const AVOption options[] = {
>> 
>>     { "dolbyvision", "Enable Dolby Vision RPU coding", OFFSET(dovi.enable), AV_OPT_TYPE_BOOL, {.i64 = FF_DOVI_AUTOMATIC }, -1, 1, VE, .unit = "dovi" },
>>     {   "auto", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_DOVI_AUTOMATIC}, .flags = VE, .unit = "dovi" },
>> +    { "dv_enable_compression", "Enable Dolby Vision metadata compression", OFFSET(dovi.enable_compression), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, VE },
>> 
>>     {NULL},
>> };
>> diff --git a/libavcodec/libx265.c b/libavcodec/libx265.c
>> index ac1dbc4f97..2a79a5e6da 100644
>> --- a/libavcodec/libx265.c
>> +++ b/libavcodec/libx265.c
>> @@ -953,6 +953,7 @@ static const AVOption options[] = {
>> #if X265_BUILD >= 167
>>     { "dolbyvision", "Enable Dolby Vision RPU coding", OFFSET(dovi.enable), AV_OPT_TYPE_BOOL, {.i64 = FF_DOVI_AUTOMATIC }, -1, 1, VE, .unit = "dovi" },
>>     {   "auto", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_DOVI_AUTOMATIC}, .flags = VE, .unit = "dovi" },
>> +    { "dv_enable_compression", "Enable Dolby Vision metadata compression", OFFSET(dovi.enable_compression), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, VE },
>> #endif
> 
> Setting up an extra AVClass here seems more hassle than it's worth, but
> maybe we could at least hide these options behind a preprocessor
> definition so that multiple files can reference them without blatantly
> duplicating code?
> 

Sending a revised v2 that moves these to a shared preprocessor definition.


- Cosmin