Message ID | 2af51940-cd6f-26aa-585f-50acaf5d744c@googlemail.com |
---|---|
State | Superseded |
Headers | show |
On Sat, Nov 19, 2016 at 02:01:54PM +0100, Andreas Cadhalpun wrote: > On 19.11.2016 01:39, Michael Niedermayer wrote: > > On Fri, Nov 18, 2016 at 11:06:56PM +0100, Andreas Cadhalpun wrote: > >> AVOption.max is a double, which has not enough precision for INT64_MAX. > >> > >> It gets interpreted as INT64_MIN, when converted back to int64_t. > >> > >> Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> > >> --- > >> libavcodec/options_table.h | 10 ++++++---- > >> 1 file changed, 6 insertions(+), 4 deletions(-) > >> > >> diff --git a/libavcodec/options_table.h b/libavcodec/options_table.h > >> index 48de667..f117ce4 100644 > >> --- a/libavcodec/options_table.h > >> +++ b/libavcodec/options_table.h > >> @@ -41,8 +41,10 @@ > >> > >> #define AV_CODEC_DEFAULT_BITRATE 200*1000 > >> > >> +#define FF_INT64_MAX (INT64_MAX - 0x1000) > > > > Missing documentation > > Added a comment. > > >> + > >> static const AVOption avcodec_options[] = { > >> -{"b", "set bitrate (in bits/s)", OFFSET(bit_rate), AV_OPT_TYPE_INT64, {.i64 = AV_CODEC_DEFAULT_BITRATE }, 0, INT64_MAX, A|V|E}, > >> +{"b", "set bitrate (in bits/s)", OFFSET(bit_rate), AV_OPT_TYPE_INT64, {.i64 = AV_CODEC_DEFAULT_BITRATE }, 0, FF_INT64_MAX, A|V|E}, > >> {"ab", "set bitrate (in bits/s)", OFFSET(bit_rate), AV_OPT_TYPE_INT64, {.i64 = 128*1000 }, 0, INT_MAX, A|E}, > >> {"bt", "Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate tolerance specifies how far " > >> "ratecontrol is willing to deviate from the target average bitrate value. This is not related " > >> @@ -444,11 +446,11 @@ static const AVOption avcodec_options[] = { > >> #if FF_API_PRIVATE_OPT > >> {"min_prediction_order", NULL, OFFSET(min_prediction_order), AV_OPT_TYPE_INT, {.i64 = -1 }, INT_MIN, INT_MAX, A|E}, > >> {"max_prediction_order", NULL, OFFSET(max_prediction_order), AV_OPT_TYPE_INT, {.i64 = -1 }, INT_MIN, INT_MAX, A|E}, > >> -{"timecode_frame_start", "GOP timecode frame start number, in non-drop-frame format", OFFSET(timecode_frame_start), AV_OPT_TYPE_INT64, {.i64 = -1 }, -1, INT64_MAX, V|E}, > >> +{"timecode_frame_start", "GOP timecode frame start number, in non-drop-frame format", OFFSET(timecode_frame_start), AV_OPT_TYPE_INT64, {.i64 = -1 }, -1, FF_INT64_MAX, V|E}, > >> #endif > > > >> {"bits_per_raw_sample", NULL, OFFSET(bits_per_raw_sample), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX}, > >> -{"channel_layout", NULL, OFFSET(channel_layout), AV_OPT_TYPE_INT64, {.i64 = DEFAULT }, 0, INT64_MAX, A|E|D, "channel_layout"}, > >> +{"channel_layout", NULL, OFFSET(channel_layout), AV_OPT_TYPE_INT64, {.i64 = DEFAULT }, 0, FF_INT64_MAX, A|E|D, "channel_layout"}, > >> -{"request_channel_layout", NULL, OFFSET(request_channel_layout), AV_OPT_TYPE_INT64, {.i64 = DEFAULT }, 0, INT64_MAX, A|D, "request_channel_layout"}, > >> +{"request_channel_layout", NULL, OFFSET(request_channel_layout), AV_OPT_TYPE_INT64, {.i64 = DEFAULT }, 0, FF_INT64_MAX, A|D, "request_channel_layout"}, > > > > this doesnt feel right > > layout is not a scalar > > Then why is it limited to positive values? it is a unsigend field, it cannot be negative i posted a patch long ago that added support for UINT64_MAX, ive updated it and taken care of the comments and will post that in a moment. This also should take care of the other issues i hope [...]
From 0f6fe6ae00d8176aa5a84f7ef1232d743d32e0dd Mon Sep 17 00:00:00 2001 From: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> Date: Fri, 18 Nov 2016 23:00:59 +0100 Subject: [PATCH] options_table: replace INT64_MAX with a sligthly smaller value AVOption.max is a double, which has not enough precision for INT64_MAX. It gets interpreted as INT64_MIN, when converted back to int64_t. Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> --- libavcodec/options_table.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/libavcodec/options_table.h b/libavcodec/options_table.h index 48de667..377dade 100644 --- a/libavcodec/options_table.h +++ b/libavcodec/options_table.h @@ -41,8 +41,12 @@ #define AV_CODEC_DEFAULT_BITRATE 200*1000 +// AVOption.max is a double, which has not enough precision for INT64_MAX. +// It gets interpreted as INT64_MIN, when converted back to int64_t. +#define FF_INT64_MAX (INT64_MAX - 0x1000) + static const AVOption avcodec_options[] = { -{"b", "set bitrate (in bits/s)", OFFSET(bit_rate), AV_OPT_TYPE_INT64, {.i64 = AV_CODEC_DEFAULT_BITRATE }, 0, INT64_MAX, A|V|E}, +{"b", "set bitrate (in bits/s)", OFFSET(bit_rate), AV_OPT_TYPE_INT64, {.i64 = AV_CODEC_DEFAULT_BITRATE }, 0, FF_INT64_MAX, A|V|E}, {"ab", "set bitrate (in bits/s)", OFFSET(bit_rate), AV_OPT_TYPE_INT64, {.i64 = 128*1000 }, 0, INT_MAX, A|E}, {"bt", "Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate tolerance specifies how far " "ratecontrol is willing to deviate from the target average bitrate value. This is not related " @@ -444,7 +448,7 @@ static const AVOption avcodec_options[] = { #if FF_API_PRIVATE_OPT {"min_prediction_order", NULL, OFFSET(min_prediction_order), AV_OPT_TYPE_INT, {.i64 = -1 }, INT_MIN, INT_MAX, A|E}, {"max_prediction_order", NULL, OFFSET(max_prediction_order), AV_OPT_TYPE_INT, {.i64 = -1 }, INT_MIN, INT_MAX, A|E}, -{"timecode_frame_start", "GOP timecode frame start number, in non-drop-frame format", OFFSET(timecode_frame_start), AV_OPT_TYPE_INT64, {.i64 = -1 }, -1, INT64_MAX, V|E}, +{"timecode_frame_start", "GOP timecode frame start number, in non-drop-frame format", OFFSET(timecode_frame_start), AV_OPT_TYPE_INT64, {.i64 = -1 }, -1, FF_INT64_MAX, V|E}, #endif {"bits_per_raw_sample", NULL, OFFSET(bits_per_raw_sample), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX}, {"channel_layout", NULL, OFFSET(channel_layout), AV_OPT_TYPE_INT64, {.i64 = DEFAULT }, 0, INT64_MAX, A|E|D, "channel_layout"}, -- 2.10.2