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fix result checking for fwrite()

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Potentially fixes infinite loop in file renderer, when fwrite() returns zero. Addressing #367.
This commit is contained in:
derselbst 2018-04-17 16:43:52 +02:00
parent d3e6781abd
commit 8051b43c02
1 changed files with 4 additions and 6 deletions
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10
src/bindings/fluid_filerenderer.c
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@ -348,19 +348,17 @@ fluid_file_renderer_process_block(fluid_file_renderer_t* dev)
#else /* No libsndfile support */ #else /* No libsndfile support */
int n, offset; size_t res, nmemb = dev->buf_size;
fluid_synth_write_s16(dev->synth, dev->period_size, dev->buf, 0, 2, dev->buf, 1, 2); fluid_synth_write_s16(dev->synth, dev->period_size, dev->buf, 0, 2, dev->buf, 1, 2);
for (offset = 0; offset < dev->buf_size; offset += n) { res = fwrite(dev->buf, 1, nmemb, dev->file);
if (res < nmemb) {
n = fwrite((char*) dev->buf + offset, 1, dev->buf_size - offset, dev->file);
if (n < 0) {
FLUID_LOG(FLUID_ERR, "Audio output file write error: %s", FLUID_LOG(FLUID_ERR, "Audio output file write error: %s",
strerror (errno)); strerror (errno));
return FLUID_FAILED; return FLUID_FAILED;
} }
}
return FLUID_OK; return FLUID_OK;
#endif #endif
} }