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lavc: add an option to enable side data-only packets during encoding
Some encoders (e.g. flac) need to send side data when there is no more data to be output. This enables them to output a packet with no data in it, only side data.
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@ -13,6 +13,11 @@ libavutil: 2013-12-xx
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API changes, most recent first:
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2014-04-xx - xxxxxxx - lavc 55.54.0 - avcodec.h
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Add AVCodecContext.side_data_only_packets to allow encoders to output packets
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with only side data. This option may become mandatory in the future, so all
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users are recommended to update their code and enable this option.
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2014-xx-xx - xxxxxxx - lavu 53.16.0 - frame.h, pixfmt.h
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Move all color-related enums (AVColorPrimaries, AVColorSpace, AVColorRange,
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AVColorTransferCharacteristic, and AVChromaLocation) inside lavu.
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@ -2730,6 +2730,21 @@ typedef struct AVCodecContext {
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* - decoding: unused.
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*/
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uint64_t vbv_delay;
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/**
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* Encoding only. Allow encoders to output packets that do not contain any
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* encoded data, only side data.
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*
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* Some encoders need to output such packets, e.g. to update some stream
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* parameters at the end of encoding.
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*
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* All callers are strongly recommended to set this option to 1 and update
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* their code to deal with such packets, since this behaviour may become
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* always enabled in the future (then this option will be deprecated and
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* later removed). To avoid ABI issues when this happens, the callers should
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* use AVOptions to set this field.
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*/
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int side_data_only_packets;
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} AVCodecContext;
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/**
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@ -399,6 +399,7 @@ static const AVOption avcodec_options[] = {
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{"fltp", "32-bit float planar", 0, AV_OPT_TYPE_CONST, {.i64 = AV_SAMPLE_FMT_FLTP }, INT_MIN, INT_MAX, A|D, "request_sample_fmt"},
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{"dblp", "64-bit double planar", 0, AV_OPT_TYPE_CONST, {.i64 = AV_SAMPLE_FMT_DBLP }, INT_MIN, INT_MAX, A|D, "request_sample_fmt"},
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{"refcounted_frames", NULL, OFFSET(refcounted_frames), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, A|V|D },
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{"side_data_only_packets", NULL, OFFSET(side_data_only_packets), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, A|V|E },
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{NULL},
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};
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@ -29,7 +29,7 @@
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#include "libavutil/version.h"
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#define LIBAVCODEC_VERSION_MAJOR 55
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#define LIBAVCODEC_VERSION_MINOR 53
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#define LIBAVCODEC_VERSION_MINOR 54
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#define LIBAVCODEC_VERSION_MICRO 0
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#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
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