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resample: check memory allocations in av_resample_init()
Originally committed as revision 24141 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -183,12 +183,17 @@ AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_size,
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double factor= FFMIN(out_rate * cutoff / in_rate, 1.0);
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int phase_count= 1<<phase_shift;
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if (!c)
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return NULL;
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c->phase_shift= phase_shift;
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c->phase_mask= phase_count-1;
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c->linear= linear;
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c->filter_length= FFMAX((int)ceil(filter_size/factor), 1);
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c->filter_bank= av_mallocz(c->filter_length*(phase_count+1)*sizeof(FELEM));
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if (!c->filter_bank)
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goto error;
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build_filter(c->filter_bank, factor, c->filter_length, phase_count, 1<<FILTER_SHIFT, WINDOW_TYPE);
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memcpy(&c->filter_bank[c->filter_length*phase_count+1], c->filter_bank, (c->filter_length-1)*sizeof(FELEM));
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c->filter_bank[c->filter_length*phase_count]= c->filter_bank[c->filter_length - 1];
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@ -198,6 +203,9 @@ AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_size,
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c->index= -phase_count*((c->filter_length-1)/2);
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return c;
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error:
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av_free(c);
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return NULL;
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}
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void av_resample_close(AVResampleContext *c){
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