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aacenc: Fix issues with huge values of bit_rate.
Do not pointlessly call ff_alloc_packet multiple times, and fix an infinite loop by clamping the maximum number of bits to target in the algorithm that does not use lambda. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de> Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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@ -721,6 +721,9 @@ static void search_for_quantizers_twoloop(AVCodecContext *avctx,
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int allz = 0;
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float minthr = INFINITY;
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// for values above this the decoder might end up in an endless loop
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// due to always having more bits than what can be encoded.
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destbits = FFMIN(destbits, 5800);
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//XXX: some heuristic to determine initial quantizers will reduce search time
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//determine zero bands and upper limits
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for (w = 0; w < sce->ics.num_windows; w += sce->ics.group_len[w]) {
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@ -571,13 +571,14 @@ static int aac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
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}
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start_ch += chans;
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}
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if ((ret = ff_alloc_packet(avpkt, 768 * s->channels))) {
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av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
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return ret;
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}
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do {
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int frame_bits;
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if ((ret = ff_alloc_packet(avpkt, 768 * s->channels))) {
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av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
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return ret;
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}
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init_put_bits(&s->pb, avpkt->data, avpkt->size);
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if ((avctx->frame_number & 0xFF)==1 && !(avctx->flags & CODEC_FLAG_BITEXACT))
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