X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmlpdec.c;h=afd8f887ec6471f02b89a4e7ebe4b26fadfb4523;hb=0ae3ba8daaab9b6b2679225f5d08046ffbcd6250;hp=493296098ac6fef27b4d413e11fc0604e2a1e7a7;hpb=46958efe97b53ee56725d2f03555e06dbead5e30;p=ffmpeg diff --git a/libavcodec/mlpdec.c b/libavcodec/mlpdec.c index 493296098ac..afd8f887ec6 100644 --- a/libavcodec/mlpdec.c +++ b/libavcodec/mlpdec.c @@ -2,31 +2,32 @@ * MLP decoder * Copyright (c) 2007-2008 Ian Caulfield * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * FFmpeg is distributed in the hope that it will be useful, + * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** - * @file libavcodec/mlpdec.c + * @file * MLP decoder */ #include #include "avcodec.h" +#include "dsputil.h" #include "libavutil/intreadwrite.h" #include "get_bits.h" #include "libavutil/crc.h" @@ -37,39 +38,36 @@ /** number of bits used for VLC lookup - longest Huffman code is 9 */ #define VLC_BITS 9 - -static const char* sample_message = - "Please file a bug report following the instructions at " - "http://ffmpeg.org/bugreports.html and include " - "a sample of this file."; - typedef struct SubStream { - //! Set if a valid restart header has been read. Otherwise the substream cannot be decoded. + /// Set if a valid restart header has been read. Otherwise the substream cannot be decoded. uint8_t restart_seen; //@{ /** restart header data */ - //! The type of noise to be used in the rematrix stage. + /// The type of noise to be used in the rematrix stage. uint16_t noise_type; - //! The index of the first channel coded in this substream. + /// The index of the first channel coded in this substream. uint8_t min_channel; - //! The index of the last channel coded in this substream. + /// The index of the last channel coded in this substream. uint8_t max_channel; - //! The number of channels input into the rematrix stage. + /// The number of channels input into the rematrix stage. uint8_t max_matrix_channel; - //! For each channel output by the matrix, the output channel to map it to + /// For each channel output by the matrix, the output channel to map it to uint8_t ch_assign[MAX_CHANNELS]; - //! The left shift applied to random noise in 0x31ea substreams. + /// Channel coding parameters for channels in the substream + ChannelParams channel_params[MAX_CHANNELS]; + + /// The left shift applied to random noise in 0x31ea substreams. uint8_t noise_shift; - //! The current seed value for the pseudorandom noise generator(s). + /// The current seed value for the pseudorandom noise generator(s). uint32_t noisegen_seed; - //! Set if the substream contains extra info to check the size of VLC blocks. + /// Set if the substream contains extra info to check the size of VLC blocks. uint8_t data_check_present; - //! Bitmask of which parameter sets are conveyed in a decoding parameter block. + /// Bitmask of which parameter sets are conveyed in a decoding parameter block. uint8_t param_presence_flags; #define PARAM_BLOCKSIZE (1 << 7) #define PARAM_MATRIX (1 << 6) @@ -84,66 +82,67 @@ typedef struct SubStream { //@{ /** matrix data */ - //! Number of matrices to be applied. + /// Number of matrices to be applied. uint8_t num_primitive_matrices; - //! matrix output channel + /// matrix output channel uint8_t matrix_out_ch[MAX_MATRICES]; - //! Whether the LSBs of the matrix output are encoded in the bitstream. + /// Whether the LSBs of the matrix output are encoded in the bitstream. uint8_t lsb_bypass[MAX_MATRICES]; - //! Matrix coefficients, stored as 2.14 fixed point. - int32_t matrix_coeff[MAX_MATRICES][MAX_CHANNELS+2]; - //! Left shift to apply to noise values in 0x31eb substreams. + /// Matrix coefficients, stored as 2.14 fixed point. + int32_t matrix_coeff[MAX_MATRICES][MAX_CHANNELS]; + /// Left shift to apply to noise values in 0x31eb substreams. uint8_t matrix_noise_shift[MAX_MATRICES]; //@} - //! Left shift to apply to Huffman-decoded residuals. + /// Left shift to apply to Huffman-decoded residuals. uint8_t quant_step_size[MAX_CHANNELS]; - //! number of PCM samples in current audio block + /// number of PCM samples in current audio block uint16_t blocksize; - //! Number of PCM samples decoded so far in this frame. + /// Number of PCM samples decoded so far in this frame. uint16_t blockpos; - //! Left shift to apply to decoded PCM values to get final 24-bit output. + /// Left shift to apply to decoded PCM values to get final 24-bit output. int8_t output_shift[MAX_CHANNELS]; - //! Running XOR of all output samples. + /// Running XOR of all output samples. int32_t lossless_check_data; } SubStream; typedef struct MLPDecodeContext { AVCodecContext *avctx; + AVFrame frame; - //! Current access unit being read has a major sync. + /// Current access unit being read has a major sync. int is_major_sync_unit; - //! Set if a valid major sync block has been read. Otherwise no decoding is possible. + /// Set if a valid major sync block has been read. Otherwise no decoding is possible. uint8_t params_valid; - //! Number of substreams contained within this stream. + /// Number of substreams contained within this stream. uint8_t num_substreams; - //! Index of the last substream to decode - further substreams are skipped. + /// Index of the last substream to decode - further substreams are skipped. uint8_t max_decoded_substream; - //! number of PCM samples contained in each frame + /// number of PCM samples contained in each frame int access_unit_size; - //! next power of two above the number of samples in each frame + /// next power of two above the number of samples in each frame int access_unit_size_pow2; SubStream substream[MAX_SUBSTREAMS]; - ChannelParams channel_params[MAX_CHANNELS]; - int matrix_changed; int filter_changed[MAX_CHANNELS][NUM_FILTERS]; int8_t noise_buffer[MAX_BLOCKSIZE_POW2]; int8_t bypassed_lsbs[MAX_BLOCKSIZE][MAX_CHANNELS]; - int32_t sample_buffer[MAX_BLOCKSIZE][MAX_CHANNELS+2]; + int32_t sample_buffer[MAX_BLOCKSIZE][MAX_CHANNELS]; + + DSPContext dsp; } MLPDecodeContext; static VLC huff_vlc[3]; @@ -152,15 +151,17 @@ static VLC huff_vlc[3]; static av_cold void init_static(void) { - INIT_VLC_STATIC(&huff_vlc[0], VLC_BITS, 18, - &ff_mlp_huffman_tables[0][0][1], 2, 1, - &ff_mlp_huffman_tables[0][0][0], 2, 1, 512); - INIT_VLC_STATIC(&huff_vlc[1], VLC_BITS, 16, - &ff_mlp_huffman_tables[1][0][1], 2, 1, - &ff_mlp_huffman_tables[1][0][0], 2, 1, 512); - INIT_VLC_STATIC(&huff_vlc[2], VLC_BITS, 15, - &ff_mlp_huffman_tables[2][0][1], 2, 1, - &ff_mlp_huffman_tables[2][0][0], 2, 1, 512); + if (!huff_vlc[0].bits) { + INIT_VLC_STATIC(&huff_vlc[0], VLC_BITS, 18, + &ff_mlp_huffman_tables[0][0][1], 2, 1, + &ff_mlp_huffman_tables[0][0][0], 2, 1, 512); + INIT_VLC_STATIC(&huff_vlc[1], VLC_BITS, 16, + &ff_mlp_huffman_tables[1][0][1], 2, 1, + &ff_mlp_huffman_tables[1][0][0], 2, 1, 512); + INIT_VLC_STATIC(&huff_vlc[2], VLC_BITS, 15, + &ff_mlp_huffman_tables[2][0][1], 2, 1, + &ff_mlp_huffman_tables[2][0][0], 2, 1, 512); + } ff_mlp_init_crc(); } @@ -168,8 +169,8 @@ static av_cold void init_static(void) static inline int32_t calculate_sign_huff(MLPDecodeContext *m, unsigned int substr, unsigned int ch) { - ChannelParams *cp = &m->channel_params[ch]; SubStream *s = &m->substream[substr]; + ChannelParams *cp = &s->channel_params[ch]; int lsb_bits = cp->huff_lsbs - s->quant_step_size[ch]; int sign_shift = lsb_bits + (cp->codebook ? 2 - cp->codebook : -1); int32_t sign_huff_offset = cp->huff_offset; @@ -197,7 +198,7 @@ static inline int read_huff_channels(MLPDecodeContext *m, GetBitContext *gbp, m->bypassed_lsbs[pos + s->blockpos][mat] = get_bits1(gbp); for (channel = s->min_channel; channel <= s->max_channel; channel++) { - ChannelParams *cp = &m->channel_params[channel]; + ChannelParams *cp = &s->channel_params[channel]; int codebook = cp->codebook; int quant_step_size = s->quant_step_size[channel]; int lsb_bits = cp->huff_lsbs - quant_step_size; @@ -208,7 +209,7 @@ 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); @@ -231,6 +232,10 @@ static av_cold int mlp_decode_init(AVCodecContext *avctx) m->avctx = avctx; for (substr = 0; substr < MAX_SUBSTREAMS; substr++) m->substream[substr].lossless_check_data = 0xffffffff; + ff_dsputil_init(&m->dsp, avctx); + + avcodec_get_frame_defaults(&m->frame); + avctx->coded_frame = &m->frame; return 0; } @@ -243,61 +248,61 @@ 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; - if (m->avctx->codec_id == CODEC_ID_MLP && mh.num_substreams > 2) { + return AVERROR_INVALIDDATA; + if (m->avctx->codec_id == AV_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, + av_log_ask_for_sample(m->avctx, "Number of substreams %d is larger than the maximum supported " - "by the decoder. %s\n", mh.num_substreams, sample_message); - return -1; + "by the decoder.\n", mh.num_substreams); + return AVERROR_PATCHWELCOME; } m->access_unit_size = mh.access_unit_size; @@ -311,9 +316,9 @@ static int read_major_sync(MLPDecodeContext *m, GetBitContext *gb) m->avctx->bits_per_raw_sample = mh.group1_bits; if (mh.group1_bits > 16) - m->avctx->sample_fmt = SAMPLE_FMT_S32; + m->avctx->sample_fmt = AV_SAMPLE_FMT_S32; else - m->avctx->sample_fmt = SAMPLE_FMT_S16; + m->avctx->sample_fmt = AV_SAMPLE_FMT_S16; m->params_valid = 1; for (substr = 0; substr < MAX_SUBSTREAMS; substr++) @@ -335,15 +340,23 @@ static int read_restart_header(MLPDecodeContext *m, GetBitContext *gbp, uint8_t checksum; uint8_t lossless_check; int start_count = get_bits_count(gbp); + const int max_matrix_channel = m->avctx->codec_id == AV_CODEC_ID_MLP + ? MAX_MATRIX_CHANNEL_MLP + : MAX_MATRIX_CHANNEL_TRUEHD; sync_word = get_bits(gbp, 13); - s->noise_type = get_bits1(gbp); - if ((m->avctx->codec_id == CODEC_ID_MLP && s->noise_type) || - sync_word != 0x31ea >> 1) { + 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 == AV_CODEC_ID_MLP && s->noise_type) { + av_log(m->avctx, AV_LOG_ERROR, "MLP must have 0x31ea sync word.\n"); + return AVERROR_INVALIDDATA; } skip_bits(gbp, 16); /* Output timestamp */ @@ -352,16 +365,38 @@ static int read_restart_header(MLPDecodeContext *m, GetBitContext *gbp, s->max_channel = get_bits(gbp, 4); s->max_matrix_channel = get_bits(gbp, 4); + if (s->max_matrix_channel > max_matrix_channel) { + av_log(m->avctx, AV_LOG_ERROR, + "Max matrix channel cannot be greater than %d.\n", + max_matrix_channel); + 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 AVERROR_INVALIDDATA; + } + + /* This should happen for TrueHD streams with >6 channels and MLP's noise + * type. It is not yet known if this is allowed. */ + if (s->max_channel > MAX_MATRIX_CHANNEL_MLP && !s->noise_type) { + av_log_ask_for_sample(m->avctx, + "Number of channels %d is larger than the maximum supported " + "by the decoder.\n", s->max_channel + 2); + return AVERROR_PATCHWELCOME; + } + 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 && s->max_channel + 1 >= m->avctx->request_channels && substr < m->max_decoded_substream) { - av_log(m->avctx, AV_LOG_INFO, + av_log(m->avctx, AV_LOG_DEBUG, "Extracting %d channel downmix from substream %d. " "Further substreams will be skipped.\n", s->max_channel + 1, substr); @@ -391,10 +426,10 @@ static int read_restart_header(MLPDecodeContext *m, GetBitContext *gbp, for (ch = 0; ch <= s->max_matrix_channel; ch++) { int ch_assign = get_bits(gbp, 6); if (ch_assign > s->max_matrix_channel) { - 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; + av_log_ask_for_sample(m->avctx, + "Assignment of matrix channel %d to invalid output channel %d.\n", + ch, ch_assign); + return AVERROR_PATCHWELCOME; } s->ch_assign[ch_assign] = ch; } @@ -414,7 +449,7 @@ static int read_restart_header(MLPDecodeContext *m, GetBitContext *gbp, memset(s->quant_step_size, 0, sizeof(s->quant_step_size)); for (ch = s->min_channel; ch <= s->max_channel; ch++) { - ChannelParams *cp = &m->channel_params[ch]; + ChannelParams *cp = &s->channel_params[ch]; cp->filter_params[FIR].order = 0; cp->filter_params[IIR].order = 0; cp->filter_params[FIR].shift = 0; @@ -436,9 +471,11 @@ static int read_restart_header(MLPDecodeContext *m, GetBitContext *gbp, /** Read parameters for one of the prediction filters. */ static int read_filter_params(MLPDecodeContext *m, GetBitContext *gbp, - unsigned int channel, unsigned int filter) + unsigned int substr, unsigned int channel, + unsigned int filter) { - FilterParams *fp = &m->channel_params[channel].filter_params[filter]; + SubStream *s = &m->substream[substr]; + FilterParams *fp = &s->channel_params[channel].filter_params[filter]; const int max_order = filter ? MAX_IIR_ORDER : MAX_FIR_ORDER; const char fchar = filter ? 'I' : 'F'; int i, order; @@ -448,7 +485,7 @@ 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); @@ -456,11 +493,12 @@ 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; if (order > 0) { + int32_t *fcoeff = s->channel_params[channel].coeff[filter]; int coeff_bits, coeff_shift; fp->shift = get_bits(gbp, 4); @@ -471,17 +509,17 @@ 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++) - fp->coeff[i] = get_sbits(gbp, coeff_bits) << coeff_shift; + fcoeff[i] = get_sbits(gbp, coeff_bits) << coeff_shift; if (get_bits1(gbp)) { int state_bits, state_shift; @@ -489,7 +527,7 @@ 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); @@ -511,14 +549,24 @@ static int read_matrix_params(MLPDecodeContext *m, unsigned int substr, GetBitCo { SubStream *s = &m->substream[substr]; unsigned int mat, ch; + const int max_primitive_matrices = m->avctx->codec_id == AV_CODEC_ID_MLP + ? MAX_MATRICES_MLP + : MAX_MATRICES_TRUEHD; 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); + if (s->num_primitive_matrices > max_primitive_matrices) { + av_log(m->avctx, AV_LOG_ERROR, + "Number of primitive matrices cannot be greater than %d.\n", + max_primitive_matrices); + return AVERROR_INVALIDDATA; + } + for (mat = 0; mat < s->num_primitive_matrices; mat++) { int frac_bits, max_chan; s->matrix_out_ch[mat] = get_bits(gbp, 4); @@ -529,12 +577,12 @@ 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; @@ -563,37 +611,38 @@ static int read_matrix_params(MLPDecodeContext *m, unsigned int substr, GetBitCo static int read_channel_params(MLPDecodeContext *m, unsigned int substr, GetBitContext *gbp, unsigned int ch) { - ChannelParams *cp = &m->channel_params[ch]; + SubStream *s = &m->substream[substr]; + ChannelParams *cp = &s->channel_params[ch]; FilterParams *fir = &cp->filter_params[FIR]; FilterParams *iir = &cp->filter_params[IIR]; - SubStream *s = &m->substream[substr]; + int ret; if (s->param_presence_flags & PARAM_FIR) if (get_bits1(gbp)) - if (read_filter_params(m, gbp, 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, 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 - * FIR filter is considered. If only the IIR filter is employed, - * the FIR filter precision is set to that of the IIR filter, so - * that the filtering code can use it. */ + * To simplify the filtering code, only the precision of the + * FIR filter is considered. If only the IIR filter is employed, + * the FIR filter precision is set to that of the IIR filter, so + * that the filtering code can use it. */ if (!fir->order && iir->order) fir->shift = iir->shift; @@ -606,7 +655,7 @@ 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); @@ -622,6 +671,7 @@ 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)) @@ -633,14 +683,14 @@ 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)) @@ -650,7 +700,7 @@ static int read_decoding_params(MLPDecodeContext *m, GetBitContext *gbp, if (s->param_presence_flags & PARAM_QUANTSTEP) if (get_bits1(gbp)) for (ch = 0; ch <= s->max_channel; ch++) { - ChannelParams *cp = &m->channel_params[ch]; + ChannelParams *cp = &s->channel_params[ch]; s->quant_step_size[ch] = get_bits(gbp, 4); @@ -659,8 +709,8 @@ 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; } @@ -674,44 +724,25 @@ static void filter_channel(MLPDecodeContext *m, unsigned int substr, unsigned int channel) { SubStream *s = &m->substream[substr]; - int32_t firbuf[MAX_BLOCKSIZE + MAX_FIR_ORDER]; - int32_t iirbuf[MAX_BLOCKSIZE + MAX_IIR_ORDER]; - FilterParams *fir = &m->channel_params[channel].filter_params[FIR]; - FilterParams *iir = &m->channel_params[channel].filter_params[IIR]; + const int32_t *fircoeff = s->channel_params[channel].coeff[FIR]; + int32_t state_buffer[NUM_FILTERS][MAX_BLOCKSIZE + MAX_FIR_ORDER]; + int32_t *firbuf = state_buffer[FIR] + MAX_BLOCKSIZE; + int32_t *iirbuf = state_buffer[IIR] + MAX_BLOCKSIZE; + FilterParams *fir = &s->channel_params[channel].filter_params[FIR]; + FilterParams *iir = &s->channel_params[channel].filter_params[IIR]; unsigned int filter_shift = fir->shift; int32_t mask = MSB_MASK(s->quant_step_size[channel]); - int index = MAX_BLOCKSIZE; - int i; - - memcpy(&firbuf[index], fir->state, MAX_FIR_ORDER * sizeof(int32_t)); - memcpy(&iirbuf[index], iir->state, MAX_IIR_ORDER * sizeof(int32_t)); - - for (i = 0; i < s->blocksize; i++) { - int32_t residual = m->sample_buffer[i + s->blockpos][channel]; - unsigned int order; - int64_t accum = 0; - int32_t result; - - /* TODO: Move this code to DSPContext? */ - - for (order = 0; order < fir->order; order++) - accum += (int64_t) firbuf[index + order] * fir->coeff[order]; - for (order = 0; order < iir->order; order++) - accum += (int64_t) iirbuf[index + order] * iir->coeff[order]; - - accum = accum >> filter_shift; - result = (accum + residual) & mask; - --index; + memcpy(firbuf, fir->state, MAX_FIR_ORDER * sizeof(int32_t)); + memcpy(iirbuf, iir->state, MAX_IIR_ORDER * sizeof(int32_t)); - firbuf[index] = result; - iirbuf[index] = result - accum; + m->dsp.mlp_filter_channel(firbuf, fircoeff, + fir->order, iir->order, + filter_shift, mask, s->blocksize, + &m->sample_buffer[s->blockpos][channel]); - m->sample_buffer[i + s->blockpos][channel] = result; - } - - memcpy(fir->state, &firbuf[index], MAX_FIR_ORDER * sizeof(int32_t)); - memcpy(iir->state, &iirbuf[index], MAX_IIR_ORDER * sizeof(int32_t)); + memcpy(fir->state, firbuf - s->blocksize, MAX_FIR_ORDER * sizeof(int32_t)); + memcpy(iir->state, iirbuf - s->blocksize, MAX_IIR_ORDER * sizeof(int32_t)); } /** Read a block of PCM residual data (or actual if no filtering active). */ @@ -721,25 +752,26 @@ 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); expected_stream_pos += get_bits(gbp, 16); - av_log(m->avctx, AV_LOG_WARNING, "This file contains some features " - "we have not tested yet. %s\n", sample_message); + av_log_ask_for_sample(m->avctx, "This file contains some features " + "we have not tested yet.\n"); } 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); @@ -870,16 +902,30 @@ static void rematrix_channels(MLPDecodeContext *m, unsigned int substr) /** Write the audio data into the output buffer. */ -static int output_data_internal(MLPDecodeContext *m, unsigned int substr, - uint8_t *data, unsigned int *data_size, int is32) +static int output_data(MLPDecodeContext *m, unsigned int substr, + void *data, int *got_frame_ptr) { + AVCodecContext *avctx = m->avctx; SubStream *s = &m->substream[substr]; unsigned int i, out_ch = 0; - int32_t *data_32 = (int32_t*) data; - int16_t *data_16 = (int16_t*) data; + int32_t *data_32; + int16_t *data_16; + int ret; + int is32 = (m->avctx->sample_fmt == AV_SAMPLE_FMT_S32); + + if (m->avctx->channels != s->max_matrix_channel + 1) { + av_log(m->avctx, AV_LOG_ERROR, "channel count mismatch\n"); + return AVERROR_INVALIDDATA; + } - if (*data_size < (s->max_channel + 1) * s->blockpos * (is32 ? 4 : 2)) - return -1; + /* get output buffer */ + m->frame.nb_samples = s->blockpos; + if ((ret = avctx->get_buffer(avctx, &m->frame)) < 0) { + av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); + return ret; + } + data_32 = (int32_t *)m->frame.data[0]; + data_16 = (int16_t *)m->frame.data[0]; for (i = 0; i < s->blockpos; i++) { for (out_ch = 0; out_ch <= s->max_matrix_channel; out_ch++) { @@ -892,27 +938,18 @@ static int output_data_internal(MLPDecodeContext *m, unsigned int substr, } } - *data_size = i * out_ch * (is32 ? 4 : 2); + *got_frame_ptr = 1; + *(AVFrame *)data = m->frame; return 0; } -static int output_data(MLPDecodeContext *m, unsigned int substr, - uint8_t *data, unsigned int *data_size) -{ - if (m->avctx->sample_fmt == SAMPLE_FMT_S32) - return output_data_internal(m, substr, data, data_size, 1); - else - return output_data_internal(m, substr, data, data_size, 0); -} - - /** Read an access unit from the stream. - * Returns < 0 on error, 0 if not enough data is present in the input stream - * otherwise returns the number of bytes consumed. */ + * @return negative on error, 0 if not enough data is present in the input stream, + * otherwise the number of bytes consumed. */ -static int read_access_unit(AVCodecContext *avctx, void* data, int *data_size, - AVPacket *avpkt) +static int read_access_unit(AVCodecContext *avctx, void* data, + int *got_frame_ptr, AVPacket *avpkt) { const uint8_t *buf = avpkt->data; int buf_size = avpkt->size; @@ -925,14 +962,15 @@ 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; length = (AV_RB16(buf) & 0xfff) * 2; - if (length > buf_size) - return -1; + if (length < 4 || length > buf_size) + return AVERROR_INVALIDDATA; init_get_bits(&gb, (buf + 4), (length - 4) * 8); @@ -947,7 +985,7 @@ static int read_access_unit(AVCodecContext *avctx, void* data, int *data_size, if (!m->params_valid) { av_log(m->avctx, AV_LOG_WARNING, "Stream parameters not seen; skipping frame.\n"); - *data_size = 0; + *got_frame_ptr = 0; return length; } @@ -966,7 +1004,7 @@ static int read_access_unit(AVCodecContext *avctx, void* data, int *data_size, substr_header_size += 2; if (extraword_present) { - if (m->avctx->codec_id == CODEC_ID_MLP) { + if (m->avctx->codec_id == AV_CODEC_ID_MLP) { av_log(m->avctx, AV_LOG_ERROR, "There must be no extraword for MLP.\n"); goto error; } @@ -1038,8 +1076,8 @@ 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; @@ -1052,13 +1090,13 @@ 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) + if (m->avctx->codec_id == AV_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; + else if (m->avctx->codec_id == AV_CODEC_ID_MLP && shorten_by != 0xD234) + return AVERROR_INVALIDDATA; if (substr == m->max_decoded_substream) av_log(m->avctx, AV_LOG_INFO, "End of stream indicated.\n"); @@ -1092,44 +1130,40 @@ 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, got_frame_ptr)) < 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; } -#if CONFIG_MLP_DECODER -AVCodec mlp_decoder = { - "mlp", - CODEC_TYPE_AUDIO, - CODEC_ID_MLP, - sizeof(MLPDecodeContext), - mlp_decode_init, - NULL, - NULL, - read_access_unit, - .long_name = NULL_IF_CONFIG_SMALL("MLP (Meridian Lossless Packing)"), +AVCodec ff_mlp_decoder = { + .name = "mlp", + .type = AVMEDIA_TYPE_AUDIO, + .id = AV_CODEC_ID_MLP, + .priv_data_size = sizeof(MLPDecodeContext), + .init = mlp_decode_init, + .decode = read_access_unit, + .capabilities = CODEC_CAP_DR1, + .long_name = NULL_IF_CONFIG_SMALL("MLP (Meridian Lossless Packing)"), }; -#endif /* CONFIG_MLP_DECODER */ #if CONFIG_TRUEHD_DECODER -AVCodec truehd_decoder = { - "truehd", - CODEC_TYPE_AUDIO, - CODEC_ID_TRUEHD, - sizeof(MLPDecodeContext), - mlp_decode_init, - NULL, - NULL, - read_access_unit, - .long_name = NULL_IF_CONFIG_SMALL("TrueHD"), +AVCodec ff_truehd_decoder = { + .name = "truehd", + .type = AVMEDIA_TYPE_AUDIO, + .id = AV_CODEC_ID_TRUEHD, + .priv_data_size = sizeof(MLPDecodeContext), + .init = mlp_decode_init, + .decode = read_access_unit, + .capabilities = CODEC_CAP_DR1, + .long_name = NULL_IF_CONFIG_SMALL("TrueHD"), }; #endif /* CONFIG_TRUEHD_DECODER */