}
memset(c->oldDSCF, 0, sizeof(c->oldDSCF));
av_lfg_init(&c->rnd, 0xDEADBEEF);
- dsputil_init(&c->dsp, avctx);
+ ff_dsputil_init(&c->dsp, avctx);
ff_mpadsp_init(&c->mpadsp);
c->dsp.bswap_buf((uint32_t*)buf, (const uint32_t*)avctx->extradata, 4);
ff_mpc_init();
int t = get_vlc2(gb, dscf_vlc.table, MPC7_DSCF_BITS, 1) - 7;
if (t == 8)
return get_bits(gb, 6);
- return ref + t;
+ return av_clip_uintp2(ref + t, 7);
}
static int mpc7_decode_frame(AVCodecContext * avctx, void *data,
int buf_size;
MPCContext *c = avctx->priv_data;
GetBitContext gb;
- uint8_t *bits;
int i, ch;
int mb = -1;
Band *bands = c->bands;
return ret;
}
- bits = av_malloc(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
- if (!bits)
+ av_fast_padded_malloc(&c->bits, &c->buf_size, buf_size);
+ if (!c->bits)
return AVERROR(ENOMEM);
- c->dsp.bswap_buf((uint32_t *)bits, (const uint32_t *)buf, buf_size >> 2);
- init_get_bits(&gb, bits, buf_size * 8);
+ c->dsp.bswap_buf((uint32_t *)c->bits, (const uint32_t *)buf, buf_size >> 2);
+ init_get_bits(&gb, c->bits, buf_size * 8);
skip_bits_long(&gb, skip);
/* read subband indexes */
int t = 4;
if(i) t = get_vlc2(&gb, hdr_vlc.table, MPC7_HDR_BITS, 1) - 5;
if(t == 4) bands[i].res[ch] = get_bits(&gb, 4);
- else bands[i].res[ch] = bands[i-1].res[ch] + t;
+ else bands[i].res[ch] = av_clip(bands[i-1].res[ch] + t, 0, 17);
}
if(bands[i].res[0] || bands[i].res[1]){
ff_mpc_dequantize_and_synth(c, mb, c->frame.data[0], 2);
- av_free(bits);
-
bits_used = get_bits_count(&gb);
bits_avail = buf_size * 8;
if (!last_frame && ((bits_avail < bits_used) || (bits_used + 32 <= bits_avail))) {
- av_log(NULL,0, "Error decoding frame: used %i of %i bits\n", bits_used, bits_avail);
+ av_log(avctx, AV_LOG_ERROR, "Error decoding frame: used %i of %i bits\n", bits_used, bits_avail);
return -1;
}
if(c->frames_to_skip){
c->frames_to_skip = 32;
}
+static av_cold int mpc7_decode_close(AVCodecContext *avctx)
+{
+ MPCContext *c = avctx->priv_data;
+ av_freep(&c->bits);
+ c->buf_size = 0;
+ return 0;
+}
+
AVCodec ff_mpc7_decoder = {
.name = "mpc7",
.type = AVMEDIA_TYPE_AUDIO,
.id = CODEC_ID_MUSEPACK7,
.priv_data_size = sizeof(MPCContext),
.init = mpc7_decode_init,
+ .close = mpc7_decode_close,
.decode = mpc7_decode_frame,
- .flush = mpc7_decode_flush,
+ .flush = mpc7_decode_flush,
.capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Musepack SV7"),
+ .long_name = NULL_IF_CONFIG_SMALL("Musepack SV7"),
};