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audio/out: correct copy length in ao_read_data_converted

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Previously, the entire convert_buffer was being copied to the desination without
regard to the fact that it may be packed and therefore smaller.

The allocated conversion buffer was also way to big

bytes * (channels * samples) ** 2

instead of

bytes * channels * samples
This commit is contained in:
Kevin Mitchell 2017-07-09 00:52:32 -07:00
parent 03abd704ec
commit a081c8d372
1 changed files with 7 additions and 6 deletions
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13
audio/out/pull.c
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@ -182,7 +182,7 @@ end:
return bytes / ao->sstride;
}
// Same as ao_read_data(), but read pre-converted data according to *fmt.
// Same as ao_read_data(), but convert data according to *fmt.
// fmt->src_fmt and fmt->channels must be the same as the AO parameters.
int ao_read_data_converted(struct ao *ao, struct ao_convert_fmt *fmt,
void **data, int samples, int64_t out_time_us)
@ -200,23 +200,24 @@ int ao_read_data_converted(struct ao *ao, struct ao_convert_fmt *fmt,
bool planar = af_fmt_is_planar(fmt->src_fmt);
int planes = planar ? fmt->channels : 1;
int plane_size = af_fmt_to_bytes(fmt->src_fmt) * samples *
(planar ? 1: fmt->channels);
int plane_samples = samples * (planar ? 1: fmt->channels);
int src_plane_size = plane_samples * af_fmt_to_bytes(fmt->src_fmt);
int dst_plane_size = plane_samples * fmt->dst_bits / 8;
int needed = plane_size * planes * fmt->channels * samples;
int needed = src_plane_size * planes;
if (needed > talloc_get_size(p->convert_buffer) || !p->convert_buffer) {
talloc_free(p->convert_buffer);
p->convert_buffer = talloc_size(NULL, needed);
}
for (int n = 0; n < planes; n++)
ndata[n] = p->convert_buffer + n * plane_size;
ndata[n] = p->convert_buffer + n * src_plane_size;
int res = ao_read_data(ao, ndata, samples, out_time_us);
ao_convert_inplace(fmt, ndata, samples);
for (int n = 0; n < planes; n++)
memcpy(data[n], ndata[n], plane_size);
memcpy(data[n], ndata[n], dst_plane_size);
return res;
}