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Lowered the smallest packet that the multi-stream encoder can encode

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Limit now at 2*streams-1 and anything below that returns OPUS_BUFFER_TOO_SMALL
rather than OPUS_BAD_ARG
This commit is contained in:
Jean-Marc Valin 2014-09-04 01:48:46 -04:00
parent 370286cd4a
commit e1326fe6c8
2 changed files with 8 additions and 16 deletions
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22
src/opus_multistream_encoder.c
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@ -744,17 +744,13 @@ static int opus_multistream_encode_native
RESTORE_STACK;
return OPUS_BAD_ARG;
}
/* Estimate (slightly overestimating) of the smallest packet the encoder can produce. */
if (50*frame_size <= Fs)
{
smallest_packet = st->layout.nb_streams*4;
} else {
smallest_packet = st->layout.nb_streams*4*50*frame_size/Fs;
}
/* Smallest packet the encoder can produce. */
smallest_packet = st->layout.nb_streams*2-1;
if (max_data_bytes < smallest_packet)
{
RESTORE_STACK;
return OPUS_BAD_ARG;
return OPUS_BUFFER_TOO_SMALL;
}
ALLOC(buf, 2*frame_size, opus_val16);
coupled_size = opus_encoder_get_size(2);
@ -766,12 +762,6 @@ static int opus_multistream_encode_native
surround_analysis(celt_mode, pcm, bandSMR, mem, preemph_mem, frame_size, 120, st->layout.nb_channels, Fs, copy_channel_in);
}
if (max_data_bytes < 4*st->layout.nb_streams-1)
{
RESTORE_STACK;
return OPUS_BUFFER_TOO_SMALL;
}
/* Compute bitrate allocation between streams (this could be a lot better) */
rate_sum = surround_rate_allocation(st, bitrates, frame_size);
@ -871,8 +861,10 @@ static int opus_multistream_encode_native
/* number of bytes left (+Toc) */
curr_max = max_data_bytes - tot_size;
/* Reserve three bytes for the last stream and four for the others */
curr_max -= IMAX(0,4*(st->layout.nb_streams-s-1)-1);
curr_max -= IMAX(0,2*(st->layout.nb_streams-s-1)-1);
curr_max = IMIN(curr_max,MS_FRAME_TMP);
/* Repacketizer will add one byte for self-delimited frames */
if (s != st->layout.nb_streams-1) curr_max--;
if (!vbr && s == st->layout.nb_streams-1)
opus_encoder_ctl(enc, OPUS_SET_BITRATE(curr_max*(8*Fs/frame_size)));
len = opus_encode_native(enc, buf, frame_size, tmp_data, curr_max, lsb_depth,