#include <inttypes.h>
#include <math.h>
-#define ALT_BITSTREAM_READER_LE
+#define BITSTREAM_READER_LE
#include "avcodec.h"
#include "get_bits.h"
#include "dsputil.h"
typedef struct vorbis_context_s {
AVCodecContext *avccontext;
+ AVFrame frame;
GetBitContext gb;
DSPContext dsp;
FmtConvertContext fmt_conv;
res_setup->partition_size = get_bits(gb, 24) + 1;
/* Validations to prevent a buffer overflow later. */
if (res_setup->begin>res_setup->end ||
- res_setup->end > vc->avccontext->channels * vc->blocksize[1] / 2 ||
+ res_setup->end > (res_setup->type == 2 ? vc->avccontext->channels : 1) * vc->blocksize[1] / 2 ||
(res_setup->end-res_setup->begin) / res_setup->partition_size > V_MAX_PARTITIONS) {
av_log(vc->avccontext, AV_LOG_ERROR,
"partition out of bounds: type, begin, end, size, blocksize: %"PRIu16", %"PRIu32", %"PRIu32", %u, %"PRIu32"\n",
for (idx = 0; idx < n; ++idx) {
map[idx] = floor(BARK((vf->rate * idx) / (2.0f * n)) *
- ((vf->bark_map_size) /
- BARK(vf->rate / 2.0f)));
+ (vf->bark_map_size / BARK(vf->rate / 2.0f)));
if (vf->bark_map_size-1 < map[idx])
map[idx] = vf->bark_map_size - 1;
}
av_log(vc->avccontext, AV_LOG_ERROR, " Vorbis id header packet corrupt (illegal blocksize). \n");
return AVERROR_INVALIDDATA;
}
- // output format int16
- if (vc->blocksize[1] / 2 * vc->audio_channels * 2 > AVCODEC_MAX_AUDIO_FRAME_SIZE) {
- av_log(vc->avccontext, AV_LOG_ERROR, "Vorbis channel count makes "
- "output packets too large.\n");
- return AVERROR_PATCHWELCOME;
- }
vc->win[0] = ff_vorbis_vwin[bl0 - 6];
vc->win[1] = ff_vorbis_vwin[bl1 - 6];
int headers_len = avccontext->extradata_size;
uint8_t *header_start[3];
int header_len[3];
- GetBitContext *gb = &(vc->gb);
+ GetBitContext *gb = &vc->gb;
int hdr_type, ret;
vc->avccontext = avccontext;
avccontext->sample_rate = vc->audio_samplerate;
avccontext->frame_size = FFMIN(vc->blocksize[0], vc->blocksize[1]) >> 2;
+ avcodec_get_frame_defaults(&vc->frame);
+ avccontext->coded_frame = &vc->frame;
+
return 0;
}
floor1_flag[i] = 1;
if (val >= room) {
if (highroom > lowroom) {
- floor1_Y_final[i] = val - lowroom + predicted;
+ floor1_Y_final[i] = av_clip_uint16(val - lowroom + predicted);
} else {
- floor1_Y_final[i] = predicted - val + highroom - 1;
+ floor1_Y_final[i] = av_clip_uint16(predicted - val + highroom - 1);
}
} else {
if (val & 1) {
- floor1_Y_final[i] = predicted - (val + 1) / 2;
+ floor1_Y_final[i] = av_clip_uint16(predicted - (val + 1) / 2);
} else {
- floor1_Y_final[i] = predicted + val / 2;
+ floor1_Y_final[i] = av_clip_uint16(predicted + val / 2);
}
}
} else {
floor1_flag[i] = 0;
- floor1_Y_final[i] = predicted;
+ floor1_Y_final[i] = av_clip_uint16(predicted);
}
av_dlog(NULL, " Decoded floor(%d) = %u / val %u\n",
uint8_t *do_not_decode,
float *vec,
unsigned vlen,
+ unsigned ch_left,
int vr_type)
{
GetBitContext *gb = &vc->gb;
unsigned ptns_to_read = vr->ptns_to_read;
uint8_t *classifs = vr->classifs;
unsigned pass, ch_used, i, j, k, l;
+ unsigned max_output = (ch - 1) * vlen;
if (vr_type == 2) {
for (j = 1; j < ch; ++j)
if (do_not_decode[0])
return 0;
ch_used = 1;
+ max_output += vr->end / ch;
} else {
ch_used = ch;
+ max_output += vr->end;
+ }
+
+ if (max_output > ch_left * vlen) {
+ av_log(vc->avccontext, AV_LOG_ERROR, "Insufficient output buffer\n");
+ return -1;
}
av_dlog(NULL, " residue type 0/1/2 decode begin, ch: %d cpc %d \n", ch, c_p_c);
static inline int vorbis_residue_decode(vorbis_context *vc, vorbis_residue *vr,
unsigned ch,
uint8_t *do_not_decode,
- float *vec, unsigned vlen)
+ float *vec, unsigned vlen,
+ unsigned ch_left)
{
if (vr->type == 2)
- return vorbis_residue_decode_internal(vc, vr, ch, do_not_decode, vec, vlen, 2);
+ return vorbis_residue_decode_internal(vc, vr, ch, do_not_decode, vec, vlen, ch_left, 2);
else if (vr->type == 1)
- return vorbis_residue_decode_internal(vc, vr, ch, do_not_decode, vec, vlen, 1);
+ return vorbis_residue_decode_internal(vc, vr, ch, do_not_decode, vec, vlen, ch_left, 1);
else if (vr->type == 0)
- return vorbis_residue_decode_internal(vc, vr, ch, do_not_decode, vec, vlen, 0);
+ return vorbis_residue_decode_internal(vc, vr, ch, do_not_decode, vec, vlen, ch_left, 0);
else {
av_log(vc->avccontext, AV_LOG_ERROR, " Invalid residue type while residue decode?! \n");
return AVERROR_INVALIDDATA;
uint8_t res_chan[255];
unsigned res_num = 0;
int retlen = 0;
+ unsigned ch_left = vc->audio_channels;
+ unsigned vlen;
if (get_bits1(gb)) {
av_log(vc->avccontext, AV_LOG_ERROR, "Not a Vorbis I audio packet.\n");
blockflag = vc->modes[mode_number].blockflag;
blocksize = vc->blocksize[blockflag];
+ vlen = blocksize / 2;
if (blockflag)
skip_bits(gb, 2); // previous_window, next_window
- memset(ch_res_ptr, 0, sizeof(float) * vc->audio_channels * blocksize / 2); //FIXME can this be removed ?
- memset(ch_floor_ptr, 0, sizeof(float) * vc->audio_channels * blocksize / 2); //FIXME can this be removed ?
+ memset(ch_res_ptr, 0, sizeof(float) * vc->audio_channels * vlen); //FIXME can this be removed ?
+ memset(ch_floor_ptr, 0, sizeof(float) * vc->audio_channels * vlen); //FIXME can this be removed ?
// Decode floor
return AVERROR_INVALIDDATA;
}
no_residue[i] = ret;
- ch_floor_ptr += blocksize / 2;
+ ch_floor_ptr += vlen;
}
// Nonzero vector propagate
for (i = 0; i < mapping->submaps; ++i) {
vorbis_residue *residue;
unsigned ch = 0;
+ int ret;
for (j = 0; j < vc->audio_channels; ++j) {
if ((mapping->submaps == 1) || (i == mapping->mux[j])) {
}
}
residue = &vc->residues[mapping->submap_residue[i]];
- vorbis_residue_decode(vc, residue, ch, do_not_decode, ch_res_ptr, blocksize/2);
+ if (ch_left < ch) {
+ av_log(vc->avccontext, AV_LOG_ERROR, "Too many channels in vorbis_floor_decode.\n");
+ return -1;
+ }
+ if (ch) {
+ ret = vorbis_residue_decode(vc, residue, ch, do_not_decode, ch_res_ptr, vlen, ch_left);
+ if (ret < 0)
+ return ret;
+ }
- ch_res_ptr += ch * blocksize / 2;
+ ch_res_ptr += ch * vlen;
+ ch_left -= ch;
}
// Inverse coupling
// Return the decoded audio packet through the standard api
-static int vorbis_decode_frame(AVCodecContext *avccontext,
- void *data, int *data_size,
- AVPacket *avpkt)
+static int vorbis_decode_frame(AVCodecContext *avccontext, void *data,
+ int *got_frame_ptr, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
vorbis_context *vc = avccontext->priv_data;
- GetBitContext *gb = &(vc->gb);
+ GetBitContext *gb = &vc->gb;
const float *channel_ptrs[255];
- int i, len, out_size;
+ int i, len, ret;
av_dlog(NULL, "packet length %d \n", buf_size);
if (!vc->first_frame) {
vc->first_frame = 1;
- *data_size = 0;
+ *got_frame_ptr = 0;
return buf_size;
}
av_dlog(NULL, "parsed %d bytes %d bits, returned %d samples (*ch*bits) \n",
get_bits_count(gb) / 8, get_bits_count(gb) % 8, len);
- out_size = len * vc->audio_channels *
- av_get_bytes_per_sample(avccontext->sample_fmt);
- if (*data_size < out_size) {
- av_log(avccontext, AV_LOG_ERROR, "output buffer is too small\n");
- return AVERROR(EINVAL);
+ /* get output buffer */
+ vc->frame.nb_samples = len;
+ if ((ret = avccontext->get_buffer(avccontext, &vc->frame)) < 0) {
+ av_log(avccontext, AV_LOG_ERROR, "get_buffer() failed\n");
+ return ret;
}
if (vc->audio_channels > 8) {
}
if (avccontext->sample_fmt == AV_SAMPLE_FMT_FLT)
- vc->fmt_conv.float_interleave(data, channel_ptrs, len, vc->audio_channels);
+ vc->fmt_conv.float_interleave((float *)vc->frame.data[0], channel_ptrs,
+ len, vc->audio_channels);
else
- vc->fmt_conv.float_to_int16_interleave(data, channel_ptrs, len,
+ vc->fmt_conv.float_to_int16_interleave((int16_t *)vc->frame.data[0],
+ channel_ptrs, len,
vc->audio_channels);
- *data_size = out_size;
+ *got_frame_ptr = 1;
+ *(AVFrame *)data = vc->frame;
return buf_size;
}
.init = vorbis_decode_init,
.close = vorbis_decode_close,
.decode = vorbis_decode_frame,
+ .capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Vorbis"),
.channel_layouts = ff_vorbis_channel_layouts,
.sample_fmts = (const enum AVSampleFormat[]) {
AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE
},
};
-
projects / ffmpeg / blobdiff