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mlpdec: return meaningful error codes instead of -1

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This commit is contained in:
Justin Ruggles 2011-10-12 22:47:50 -04:00
parent e1b8d88d52
commit 82be06bbb3
2 changed files with 61 additions and 57 deletions
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6
libavcodec/mlp_parser.c
View File

@ -138,11 +138,11 @@ int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb)
checksum = ff_mlp_checksum16(gb->buffer, 26);
if (checksum != AV_RL16(gb->buffer+26)) {
av_log(log, AV_LOG_ERROR, "major sync info header checksum error\n");
return -1;
return AVERROR_INVALIDDATA;
}
if (get_bits_long(gb, 24) != 0xf8726f) /* Sync words */
return -1;
return AVERROR_INVALIDDATA;
mh->stream_type = get_bits(gb, 8);
@ -173,7 +173,7 @@ int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb)
mh->channels_thd_stream2 = get_bits(gb, 13);
} else
return -1;
return AVERROR_INVALIDDATA;
mh->access_unit_size = 40 << (ratebits & 7);
mh->access_unit_size_pow2 = 64 << (ratebits & 7);

112
libavcodec/mlpdec.c
View File

@ -214,7 +214,7 @@ static inline int read_huff_channels(MLPDecodeContext *m, GetBitContext *gbp,
VLC_BITS, (9 + VLC_BITS - 1) / VLC_BITS);
if (result < 0)
return -1;
return AVERROR_INVALIDDATA;
if (lsb_bits > 0)
result = (result << lsb_bits) + get_bits(gbp, lsb_bits);
@ -250,61 +250,61 @@ static av_cold int mlp_decode_init(AVCodecContext *avctx)
static int read_major_sync(MLPDecodeContext *m, GetBitContext *gb)
{
MLPHeaderInfo mh;
int substr;
int substr, ret;
if (ff_mlp_read_major_sync(m->avctx, &mh, gb) != 0)
return -1;
if ((ret = ff_mlp_read_major_sync(m->avctx, &mh, gb)) != 0)
return ret;
if (mh.group1_bits == 0) {
av_log(m->avctx, AV_LOG_ERROR, "invalid/unknown bits per sample\n");
return -1;
return AVERROR_INVALIDDATA;
}
if (mh.group2_bits > mh.group1_bits) {
av_log(m->avctx, AV_LOG_ERROR,
"Channel group 2 cannot have more bits per sample than group 1.\n");
return -1;
return AVERROR_INVALIDDATA;
}
if (mh.group2_samplerate && mh.group2_samplerate != mh.group1_samplerate) {
av_log(m->avctx, AV_LOG_ERROR,
"Channel groups with differing sample rates are not currently supported.\n");
return -1;
return AVERROR_INVALIDDATA;
}
if (mh.group1_samplerate == 0) {
av_log(m->avctx, AV_LOG_ERROR, "invalid/unknown sampling rate\n");
return -1;
return AVERROR_INVALIDDATA;
}
if (mh.group1_samplerate > MAX_SAMPLERATE) {
av_log(m->avctx, AV_LOG_ERROR,
"Sampling rate %d is greater than the supported maximum (%d).\n",
mh.group1_samplerate, MAX_SAMPLERATE);
return -1;
return AVERROR_INVALIDDATA;
}
if (mh.access_unit_size > MAX_BLOCKSIZE) {
av_log(m->avctx, AV_LOG_ERROR,
"Block size %d is greater than the supported maximum (%d).\n",
mh.access_unit_size, MAX_BLOCKSIZE);
return -1;
return AVERROR_INVALIDDATA;
}
if (mh.access_unit_size_pow2 > MAX_BLOCKSIZE_POW2) {
av_log(m->avctx, AV_LOG_ERROR,
"Block size pow2 %d is greater than the supported maximum (%d).\n",
mh.access_unit_size_pow2, MAX_BLOCKSIZE_POW2);
return -1;
return AVERROR_INVALIDDATA;
}
if (mh.num_substreams == 0)
return -1;
return AVERROR_INVALIDDATA;
if (m->avctx->codec_id == CODEC_ID_MLP && mh.num_substreams > 2) {
av_log(m->avctx, AV_LOG_ERROR, "MLP only supports up to 2 substreams.\n");
return -1;
return AVERROR_INVALIDDATA;
}
if (mh.num_substreams > MAX_SUBSTREAMS) {
av_log(m->avctx, AV_LOG_ERROR,
"Number of substreams %d is larger than the maximum supported "
"by the decoder. %s\n", mh.num_substreams, sample_message);
return -1;
return AVERROR_INVALIDDATA;
}
m->access_unit_size = mh.access_unit_size;
@ -351,14 +351,14 @@ static int read_restart_header(MLPDecodeContext *m, GetBitContext *gbp,
if (sync_word != 0x31ea >> 1) {
av_log(m->avctx, AV_LOG_ERROR,
"restart header sync incorrect (got 0x%04x)\n", sync_word);
return -1;
return AVERROR_INVALIDDATA;
}
s->noise_type = get_bits1(gbp);
if (m->avctx->codec_id == CODEC_ID_MLP && s->noise_type) {
av_log(m->avctx, AV_LOG_ERROR, "MLP must have 0x31ea sync word.\n");
return -1;
return AVERROR_INVALIDDATA;
}
skip_bits(gbp, 16); /* Output timestamp */
@ -371,13 +371,13 @@ static int read_restart_header(MLPDecodeContext *m, GetBitContext *gbp,
av_log(m->avctx, AV_LOG_ERROR,
"Max matrix channel cannot be greater than %d.\n",
max_matrix_channel);
return -1;
return AVERROR_INVALIDDATA;
}
if (s->max_channel != s->max_matrix_channel) {
av_log(m->avctx, AV_LOG_ERROR,
"Max channel must be equal max matrix channel.\n");
return -1;
return AVERROR_INVALIDDATA;
}
/* This should happen for TrueHD streams with >6 channels and MLP's noise
@ -386,13 +386,13 @@ static int read_restart_header(MLPDecodeContext *m, GetBitContext *gbp,
av_log(m->avctx, AV_LOG_ERROR,
"Number of channels %d is larger than the maximum supported "
"by the decoder. %s\n", s->max_channel+2, sample_message);
return -1;
return AVERROR_INVALIDDATA;
}
if (s->min_channel > s->max_channel) {
av_log(m->avctx, AV_LOG_ERROR,
"Substream min channel cannot be greater than max channel.\n");
return -1;
return AVERROR_INVALIDDATA;
}
if (m->avctx->request_channels > 0
@ -431,7 +431,7 @@ static int read_restart_header(MLPDecodeContext *m, GetBitContext *gbp,
av_log(m->avctx, AV_LOG_ERROR,
"Assignment of matrix channel %d to invalid output channel %d. %s\n",
ch, ch_assign, sample_message);
return -1;
return AVERROR_INVALIDDATA;
}
s->ch_assign[ch_assign] = ch;
}
@ -487,7 +487,7 @@ static int read_filter_params(MLPDecodeContext *m, GetBitContext *gbp,
if (m->filter_changed[channel][filter]++ > 1) {
av_log(m->avctx, AV_LOG_ERROR, "Filters may change only once per access unit.\n");
return -1;
return AVERROR_INVALIDDATA;
}
order = get_bits(gbp, 4);
@ -495,7 +495,7 @@ static int read_filter_params(MLPDecodeContext *m, GetBitContext *gbp,
av_log(m->avctx, AV_LOG_ERROR,
"%cIR filter order %d is greater than maximum %d.\n",
fchar, order, max_order);
return -1;
return AVERROR_INVALIDDATA;
}
fp->order = order;
@ -511,13 +511,13 @@ static int read_filter_params(MLPDecodeContext *m, GetBitContext *gbp,
av_log(m->avctx, AV_LOG_ERROR,
"%cIR filter coeff_bits must be between 1 and 16.\n",
fchar);
return -1;
return AVERROR_INVALIDDATA;
}
if (coeff_bits + coeff_shift > 16) {
av_log(m->avctx, AV_LOG_ERROR,
"Sum of coeff_bits and coeff_shift for %cIR filter must be 16 or less.\n",
fchar);
return -1;
return AVERROR_INVALIDDATA;
}
for (i = 0; i < order; i++)
@ -529,7 +529,7 @@ static int read_filter_params(MLPDecodeContext *m, GetBitContext *gbp,
if (filter == FIR) {
av_log(m->avctx, AV_LOG_ERROR,
"FIR filter has state data specified.\n");
return -1;
return AVERROR_INVALIDDATA;
}
state_bits = get_bits(gbp, 4);
@ -557,7 +557,7 @@ static int read_matrix_params(MLPDecodeContext *m, unsigned int substr, GetBitCo
if (m->matrix_changed++ > 1) {
av_log(m->avctx, AV_LOG_ERROR, "Matrices may change only once per access unit.\n");
return -1;
return AVERROR_INVALIDDATA;
}
s->num_primitive_matrices = get_bits(gbp, 4);
@ -566,7 +566,7 @@ static int read_matrix_params(MLPDecodeContext *m, unsigned int substr, GetBitCo
av_log(m->avctx, AV_LOG_ERROR,
"Number of primitive matrices cannot be greater than %d.\n",
max_primitive_matrices);
return -1;
return AVERROR_INVALIDDATA;
}
for (mat = 0; mat < s->num_primitive_matrices; mat++) {
@ -579,12 +579,12 @@ static int read_matrix_params(MLPDecodeContext *m, unsigned int substr, GetBitCo
av_log(m->avctx, AV_LOG_ERROR,
"Invalid channel %d specified as output from matrix.\n",
s->matrix_out_ch[mat]);
return -1;
return AVERROR_INVALIDDATA;
}
if (frac_bits > 14) {
av_log(m->avctx, AV_LOG_ERROR,
"Too many fractional bits specified.\n");
return -1;
return AVERROR_INVALIDDATA;
}
max_chan = s->max_matrix_channel;
@ -617,27 +617,28 @@ static int read_channel_params(MLPDecodeContext *m, unsigned int substr,
ChannelParams *cp = &s->channel_params[ch];
FilterParams *fir = &cp->filter_params[FIR];
FilterParams *iir = &cp->filter_params[IIR];
int ret;
if (s->param_presence_flags & PARAM_FIR)
if (get_bits1(gbp))
if (read_filter_params(m, gbp, substr, ch, FIR) < 0)
return -1;
if ((ret = read_filter_params(m, gbp, substr, ch, FIR)) < 0)
return ret;
if (s->param_presence_flags & PARAM_IIR)
if (get_bits1(gbp))
if (read_filter_params(m, gbp, substr, ch, IIR) < 0)
return -1;
if ((ret = read_filter_params(m, gbp, substr, ch, IIR)) < 0)
return ret;
if (fir->order + iir->order > 8) {
av_log(m->avctx, AV_LOG_ERROR, "Total filter orders too high.\n");
return -1;
return AVERROR_INVALIDDATA;
}
if (fir->order && iir->order &&
fir->shift != iir->shift) {
av_log(m->avctx, AV_LOG_ERROR,
"FIR and IIR filters must use the same precision.\n");
return -1;
return AVERROR_INVALIDDATA;
}
/* The FIR and IIR filters must have the same precision.
* To simplify the filtering code, only the precision of the
@ -656,7 +657,7 @@ static int read_channel_params(MLPDecodeContext *m, unsigned int substr,
if (cp->huff_lsbs > 24) {
av_log(m->avctx, AV_LOG_ERROR, "Invalid huff_lsbs.\n");
return -1;
return AVERROR_INVALIDDATA;
}
cp->sign_huff_offset = calculate_sign_huff(m, substr, ch);
@ -672,6 +673,7 @@ static int read_decoding_params(MLPDecodeContext *m, GetBitContext *gbp,
{
SubStream *s = &m->substream[substr];
unsigned int ch;
int ret;
if (s->param_presence_flags & PARAM_PRESENCE)
if (get_bits1(gbp))
@ -683,14 +685,14 @@ static int read_decoding_params(MLPDecodeContext *m, GetBitContext *gbp,
if (s->blocksize < 8 || s->blocksize > m->access_unit_size) {
av_log(m->avctx, AV_LOG_ERROR, "Invalid blocksize.");
s->blocksize = 0;
return -1;
return AVERROR_INVALIDDATA;
}
}
if (s->param_presence_flags & PARAM_MATRIX)
if (get_bits1(gbp))
if (read_matrix_params(m, substr, gbp) < 0)
return -1;
if ((ret = read_matrix_params(m, substr, gbp)) < 0)
return ret;
if (s->param_presence_flags & PARAM_OUTSHIFT)
if (get_bits1(gbp))
@ -709,8 +711,8 @@ static int read_decoding_params(MLPDecodeContext *m, GetBitContext *gbp,
for (ch = s->min_channel; ch <= s->max_channel; ch++)
if (get_bits1(gbp))
if (read_channel_params(m, substr, gbp, ch) < 0)
return -1;
if ((ret = read_channel_params(m, substr, gbp, ch)) < 0)
return ret;
return 0;
}
@ -752,6 +754,7 @@ static int read_block_data(MLPDecodeContext *m, GetBitContext *gbp,
{
SubStream *s = &m->substream[substr];
unsigned int i, ch, expected_stream_pos = 0;
int ret;
if (s->data_check_present) {
expected_stream_pos = get_bits_count(gbp);
@ -762,15 +765,15 @@ static int read_block_data(MLPDecodeContext *m, GetBitContext *gbp,
if (s->blockpos + s->blocksize > m->access_unit_size) {
av_log(m->avctx, AV_LOG_ERROR, "too many audio samples in frame\n");
return -1;
return AVERROR_INVALIDDATA;
}
memset(&m->bypassed_lsbs[s->blockpos][0], 0,
s->blocksize * sizeof(m->bypassed_lsbs[0]));
for (i = 0; i < s->blocksize; i++)
if (read_huff_channels(m, gbp, substr, i) < 0)
return -1;
if ((ret = read_huff_channels(m, gbp, substr, i)) < 0)
return ret;
for (ch = s->min_channel; ch <= s->max_channel; ch++)
filter_channel(m, substr, ch);
@ -956,6 +959,7 @@ static int read_access_unit(AVCodecContext *avctx, void* data, int *data_size,
uint8_t substream_parity_present[MAX_SUBSTREAMS];
uint16_t substream_data_len[MAX_SUBSTREAMS];
uint8_t parity_bits;
int ret;
if (buf_size < 4)
return 0;
@ -963,7 +967,7 @@ static int read_access_unit(AVCodecContext *avctx, void* data, int *data_size,
length = (AV_RB16(buf) & 0xfff) * 2;
if (length < 4 || length > buf_size)
return -1;
return AVERROR_INVALIDDATA;
init_get_bits(&gb, (buf + 4), (length - 4) * 8);
@ -1069,8 +1073,8 @@ static int read_access_unit(AVCodecContext *avctx, void* data, int *data_size,
if (!s->restart_seen)
goto next_substr;
if (read_block_data(m, &gb, substr) < 0)
return -1;
if ((ret = read_block_data(m, &gb, substr)) < 0)
return ret;
if (get_bits_count(&gb) >= substream_data_len[substr] * 8)
goto substream_length_mismatch;
@ -1083,13 +1087,13 @@ static int read_access_unit(AVCodecContext *avctx, void* data, int *data_size,
int shorten_by;
if (get_bits(&gb, 16) != 0xD234)
return -1;
return AVERROR_INVALIDDATA;
shorten_by = get_bits(&gb, 16);
if (m->avctx->codec_id == CODEC_ID_TRUEHD && shorten_by & 0x2000)
s->blockpos -= FFMIN(shorten_by & 0x1FFF, s->blockpos);
else if (m->avctx->codec_id == CODEC_ID_MLP && shorten_by != 0xD234)
return -1;
return AVERROR_INVALIDDATA;
if (substr == m->max_decoded_substream)
av_log(m->avctx, AV_LOG_INFO, "End of stream indicated.\n");
@ -1123,18 +1127,18 @@ next_substr:
rematrix_channels(m, m->max_decoded_substream);
if (output_data(m, m->max_decoded_substream, data, data_size) < 0)
return -1;
if ((ret = output_data(m, m->max_decoded_substream, data, data_size)) < 0)
return ret;
return length;
substream_length_mismatch:
av_log(m->avctx, AV_LOG_ERROR, "substream %d length mismatch\n", substr);
return -1;
return AVERROR_INVALIDDATA;
error:
m->params_valid = 0;
return -1;
return AVERROR_INVALIDDATA;
}
AVCodec ff_mlp_decoder = {