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Merge remote-tracking branch 'qatar/master'

Browse Source 
* qatar/master:
  dsicinvideo: validate buffer offset before copying pixels.
  cook: error out on quant_index values outside [-63, 63] range.
  mpc: pad mpc_CC/SCF[] tables to allow for negative indices.

Conflicts:
	libavcodec/cook.c
	libavcodec/dsicinav.c
	libavcodec/mpc.c
	libavcodec/mpc7.c
	libavcodec/mpcdata.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-03-12 04:35:06 +01:00
commit 1c27359867
3 changed files with 29 additions and 24 deletions
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45
libavcodec/cook.c
View File

@ -367,7 +367,7 @@ static void decode_gain_info(GetBitContext *gb, int *gaininfo)
* @param quant_index_table pointer to the array
*/
static int decode_envelope(COOKContext *q, COOKSubpacket *p,
int *quant_index_table)
int *quant_index_table)
{
int i, j, vlc_index;
@ -388,9 +388,10 @@ static int decode_envelope(COOKContext *q, COOKSubpacket *p,
j = get_vlc2(&q->gb, q->envelope_quant_index[vlc_index - 1].table,
q->envelope_quant_index[vlc_index - 1].bits, 2);
quant_index_table[i] = quant_index_table[i - 1] + j - 12; // differential encoding
if (quant_index_table[i] < -63 || quant_index_table[i] > 63) {
av_log(NULL, AV_LOG_ERROR, "quant_index_table value out of bounds\n");
if (quant_index_table[i] > 63 || quant_index_table[i] < -63) {
av_log(q->avctx, AV_LOG_ERROR,
"Invalid quantizer %d at position %d, outside [-63, 63] range\n",
quant_index_table[i], i);
return AVERROR_INVALIDDATA;
}
}
@ -651,13 +652,13 @@ static int mono_decode(COOKContext *q, COOKSubpacket *p, float *mlt_buffer)
int category_index[128];
int quant_index_table[102];
int category[128];
int ret, i;
int res, i;
memset(&category, 0, sizeof(category));
memset(&category_index, 0, sizeof(category_index));
if ((ret = decode_envelope(q, p, quant_index_table)) < 0)
return ret;
if ((res = decode_envelope(q, p, quant_index_table)) < 0)
return res;
q->num_vectors = get_bits(&q->gb, p->log2_numvector_size);
categorize(q, p, quant_index_table, category, category_index);
expand_category(q, category, category_index);
@ -825,9 +826,9 @@ static void decouple_float(COOKContext *q,
* @param mlt_buffer2 pointer to right channel mlt coefficients
*/
static int joint_decode(COOKContext *q, COOKSubpacket *p, float *mlt_buffer1,
float *mlt_buffer2)
float *mlt_buffer2)
{
int i, j, ret;
int i, j, res;
int decouple_tab[SUBBAND_SIZE];
float *decode_buffer = q->decode_buffer_0;
int idx, cpl_tmp;
@ -840,10 +841,10 @@ static int joint_decode(COOKContext *q, COOKSubpacket *p, float *mlt_buffer1,
/* Make sure the buffers are zeroed out. */
memset(mlt_buffer1, 0, 1024 * sizeof(*mlt_buffer1));
memset(mlt_buffer2, 0, 1024 * sizeof(*mlt_buffer2));
if ((ret = decouple_info(q, p, decouple_tab)) < 0)
return ret;
if ((ret = mono_decode(q, p, decode_buffer)) < 0)
return ret;
if ((res = decouple_info(q, p, decouple_tab)) < 0)
return res;
if ((res = mono_decode(q, p, decode_buffer)) < 0)
return res;
/* The two channels are stored interleaved in decode_buffer. */
for (i = 0; i < p->js_subband_start; i++) {
for (j = 0; j < SUBBAND_SIZE; j++) {
@ -864,6 +865,7 @@ static int joint_decode(COOKContext *q, COOKSubpacket *p, float *mlt_buffer1,
q->decouple(q, p, i, f1, f2, decode_buffer, mlt_buffer1, mlt_buffer2);
idx = (1 << p->js_vlc_bits) - 1;
}
return 0;
}
@ -938,10 +940,10 @@ static inline void mlt_compensate_output(COOKContext *q, float *decode_buffer,
* @param outbuffer pointer to the outbuffer
*/
static int decode_subpacket(COOKContext *q, COOKSubpacket *p,
const uint8_t *inbuffer, float *outbuffer)
const uint8_t *inbuffer, float *outbuffer)
{
int sub_packet_size = p->size;
int ret;
int res;
/* packet dump */
// for (i = 0; i < sub_packet_size ; i++)
// av_log(q->avctx, AV_LOG_ERROR, "%02x", inbuffer[i]);
@ -950,16 +952,16 @@ static int decode_subpacket(COOKContext *q, COOKSubpacket *p,
decode_bytes_and_gain(q, p, inbuffer, &p->gains1);
if (p->joint_stereo) {
if ((ret = joint_decode(q, p, q->decode_buffer_1, q->decode_buffer_2)) < 0)
return ret;
if ((res = joint_decode(q, p, q->decode_buffer_1, q->decode_buffer_2)) < 0)
return res;
} else {
if ((ret = mono_decode(q, p, q->decode_buffer_1)) < 0)
return ret;
if ((res = mono_decode(q, p, q->decode_buffer_1)) < 0)
return res;
if (p->num_channels == 2) {
decode_bytes_and_gain(q, p, inbuffer + sub_packet_size / 2, &p->gains2);
if ((ret = mono_decode(q, p, q->decode_buffer_2)) < 0)
return ret;
if ((res = mono_decode(q, p, q->decode_buffer_2)) < 0)
return res;
}
}
@ -973,6 +975,7 @@ static int decode_subpacket(COOKContext *q, COOKSubpacket *p,
else
mlt_compensate_output(q, q->decode_buffer_2, &p->gains2,
p->mono_previous_buffer2, outbuffer, p->ch_idx + 1);
return 0;
}

1
libavcodec/dsicinav.c
View File

@ -175,6 +175,7 @@ static int cin_decode_lzss(const unsigned char *src, int src_size, unsigned char
}
}
}
return 0;
}

7
libavcodec/mpcdata.h
View File

@ -22,9 +22,10 @@
#ifndef AVCODEC_MPCDATA_H
#define AVCODEC_MPCDATA_H
static const float mpc_CC[1+18] = {
111.285962475327f,
65536.0000, 21845.3333, 13107.2000, 9362.2857, 7281.7778, 4369.0667, 2114.0645,
static const float mpc_CC[18+1] = {
111.285962475327f, // 32768/2/255*sqrt(3)
65536.0000 /* this value is never used */,
21845.3333, 13107.2000, 9362.2857, 7281.7778, 4369.0667, 2114.0645,
1040.2539, 516.0315, 257.0039, 128.2505, 64.0626, 32.0156, 16.0039, 8.0010,
4.0002, 2.0001, 1.0000
};