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avcodec/sonic: check memory allocations

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-05-15 17:26:25 +02:00
parent cdd25f9a3d
commit c131a9fead
1 changed files with 18 additions and 3 deletions
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21
libavcodec/sonic.c
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@ -497,12 +497,15 @@ static int predictor_calc_error(int *k, int *state, int order, int error)
// copes better with quantization, and calculates the
// actual whitened result as it goes.
static void modified_levinson_durbin(int *window, int window_entries,
static int modified_levinson_durbin(int *window, int window_entries,
int *out, int out_entries, int channels, int *tap_quant)
{
int i;
int *state = av_calloc(window_entries, sizeof(*state));
if (!state)
return AVERROR(ENOMEM);
memcpy(state, window, 4* window_entries);
for (i = 0; i < out_entries; i++)
@ -567,6 +570,7 @@ static void modified_levinson_durbin(int *window, int window_entries,
}
av_free(state);
return 0;
}
static inline int code_samplerate(int samplerate)
@ -627,6 +631,9 @@ static av_cold int sonic_encode_init(AVCodecContext *avctx)
// generate taps
s->tap_quant = av_calloc(s->num_taps, sizeof(*s->tap_quant));
if (!s->tap_quant)
return AVERROR(ENOMEM);
for (i = 0; i < s->num_taps; i++)
s->tap_quant[i] = ff_sqrt(i+1);
@ -656,7 +663,7 @@ static av_cold int sonic_encode_init(AVCodecContext *avctx)
s->window_size = ((2*s->tail_size)+s->frame_size);
s->window = av_calloc(s->window_size, sizeof(*s->window));
if (!s->window)
if (!s->window || !s->int_samples)
return AVERROR(ENOMEM);
avctx->extradata = av_mallocz(16);
@ -769,8 +776,11 @@ static int sonic_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
s->tail[i] = s->int_samples[s->frame_size - s->tail_size + i];
// generate taps
modified_levinson_durbin(s->window, s->window_size,
ret = modified_levinson_durbin(s->window, s->window_size,
s->predictor_k, s->num_taps, s->channels, s->tap_quant);
if (ret < 0)
return ret;
if ((ret = intlist_write(&c, state, s->predictor_k, s->num_taps, 0)) < 0)
return ret;
@ -913,6 +923,9 @@ static av_cold int sonic_decode_init(AVCodecContext *avctx)
// generate taps
s->tap_quant = av_calloc(s->num_taps, sizeof(*s->tap_quant));
if (!s->tap_quant)
return AVERROR(ENOMEM);
for (i = 0; i < s->num_taps; i++)
s->tap_quant[i] = ff_sqrt(i+1);
@ -932,6 +945,8 @@ static av_cold int sonic_decode_init(AVCodecContext *avctx)
return AVERROR(ENOMEM);
}
s->int_samples = av_calloc(s->frame_size, sizeof(*s->int_samples));
if (!s->int_samples)
return AVERROR(ENOMEM);
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
return 0;