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libfdk-aac: Allow setting VBR modes via a private option
This avoids using the global_quality field and QSCALE flag for passing the VBR modes, since the value range of the global_quality field doesn't really map cleanly to this codec's VBR modes. Signed-off-by: Martin Storsjö <martin@martin.st>
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@ -36,6 +36,7 @@ typedef struct AACContext {
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int signaling;
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int latm;
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int header_period;
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int vbr;
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AudioFrameQueue afq;
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} AACContext;
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@ -50,6 +51,7 @@ static const AVOption aac_enc_options[] = {
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{ "explicit_hierarchical", "Explicit hierarchical signaling", 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" },
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{ "latm", "Output LATM/LOAS encapsulated data", offsetof(AACContext, latm), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
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{ "header_period", "StreamMuxConfig and PCE repetition period (in frames)", offsetof(AACContext, header_period), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 0xffff, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
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{ "vbr", "VBR mode (1-5)", offsetof(AACContext, vbr), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 5, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
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{ NULL }
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};
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@ -173,8 +175,8 @@ static av_cold int aac_encode_init(AVCodecContext *avctx)
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goto error;
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}
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if (avctx->flags & CODEC_FLAG_QSCALE) {
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int mode = avctx->global_quality;
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if (avctx->flags & CODEC_FLAG_QSCALE || s->vbr) {
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int mode = s->vbr ? s->vbr : avctx->global_quality;
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if (mode < 1 || mode > 5) {
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av_log(avctx, AV_LOG_WARNING,
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"VBR quality %d out of range, should be 1-5\n", mode);
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