From 22e28216336da876e1fd17f380ce42eaf1446769 Mon Sep 17 00:00:00 2001 From: Tim Redfern Date: Mon, 17 Feb 2014 13:36:38 +0000 Subject: chasing indexing error --- ffmpeg/libavcodec/takdec.c | 950 --------------------------------------------- 1 file changed, 950 deletions(-) delete mode 100644 ffmpeg/libavcodec/takdec.c (limited to 'ffmpeg/libavcodec/takdec.c') diff --git a/ffmpeg/libavcodec/takdec.c b/ffmpeg/libavcodec/takdec.c deleted file mode 100644 index fcbe10a..0000000 --- a/ffmpeg/libavcodec/takdec.c +++ /dev/null @@ -1,950 +0,0 @@ -/* - * TAK decoder - * Copyright (c) 2012 Paul B Mahol - * - * This file is part of FFmpeg. - * - * FFmpeg 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, - * 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 - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * TAK (Tom's lossless Audio Kompressor) decoder - * @author Paul B Mahol - */ - -#include "libavutil/internal.h" -#include "libavutil/samplefmt.h" -#include "tak.h" -#include "thread.h" -#include "avcodec.h" -#include "dsputil.h" -#include "internal.h" -#include "unary.h" - -#define MAX_SUBFRAMES 8 ///< max number of subframes per channel -#define MAX_PREDICTORS 256 - -typedef struct MCDParam { - int8_t present; ///< decorrelation parameter availability for this channel - int8_t index; ///< index into array of decorrelation types - int8_t chan1; - int8_t chan2; -} MCDParam; - -typedef struct TAKDecContext { - AVCodecContext *avctx; ///< parent AVCodecContext - DSPContext dsp; - TAKStreamInfo ti; - GetBitContext gb; ///< bitstream reader initialized to start at the current frame - - int uval; - int nb_samples; ///< number of samples in the current frame - uint8_t *decode_buffer; - unsigned int decode_buffer_size; - int32_t *decoded[TAK_MAX_CHANNELS]; ///< decoded samples for each channel - - int8_t lpc_mode[TAK_MAX_CHANNELS]; - int8_t sample_shift[TAK_MAX_CHANNELS]; ///< shift applied to every sample in the channel - int16_t predictors[MAX_PREDICTORS]; - int nb_subframes; ///< number of subframes in the current frame - int16_t subframe_len[MAX_SUBFRAMES]; ///< subframe length in samples - int subframe_scale; - - int8_t dmode; ///< channel decorrelation type in the current frame - - MCDParam mcdparams[TAK_MAX_CHANNELS]; ///< multichannel decorrelation parameters - - int8_t coding_mode[128]; - DECLARE_ALIGNED(16, int16_t, filter)[MAX_PREDICTORS]; - DECLARE_ALIGNED(16, int16_t, residues)[544]; -} TAKDecContext; - -static const int8_t mc_dmodes[] = { 1, 3, 4, 6, }; - -static const uint16_t predictor_sizes[] = { - 4, 8, 12, 16, 24, 32, 48, 64, 80, 96, 128, 160, 192, 224, 256, 0, -}; - -static const struct CParam { - int init; - int escape; - int scale; - int aescape; - int bias; -} xcodes[50] = { - { 0x01, 0x0000001, 0x0000001, 0x0000003, 0x0000008 }, - { 0x02, 0x0000003, 0x0000001, 0x0000007, 0x0000006 }, - { 0x03, 0x0000005, 0x0000002, 0x000000E, 0x000000D }, - { 0x03, 0x0000003, 0x0000003, 0x000000D, 0x0000018 }, - { 0x04, 0x000000B, 0x0000004, 0x000001C, 0x0000019 }, - { 0x04, 0x0000006, 0x0000006, 0x000001A, 0x0000030 }, - { 0x05, 0x0000016, 0x0000008, 0x0000038, 0x0000032 }, - { 0x05, 0x000000C, 0x000000C, 0x0000034, 0x0000060 }, - { 0x06, 0x000002C, 0x0000010, 0x0000070, 0x0000064 }, - { 0x06, 0x0000018, 0x0000018, 0x0000068, 0x00000C0 }, - { 0x07, 0x0000058, 0x0000020, 0x00000E0, 0x00000C8 }, - { 0x07, 0x0000030, 0x0000030, 0x00000D0, 0x0000180 }, - { 0x08, 0x00000B0, 0x0000040, 0x00001C0, 0x0000190 }, - { 0x08, 0x0000060, 0x0000060, 0x00001A0, 0x0000300 }, - { 0x09, 0x0000160, 0x0000080, 0x0000380, 0x0000320 }, - { 0x09, 0x00000C0, 0x00000C0, 0x0000340, 0x0000600 }, - { 0x0A, 0x00002C0, 0x0000100, 0x0000700, 0x0000640 }, - { 0x0A, 0x0000180, 0x0000180, 0x0000680, 0x0000C00 }, - { 0x0B, 0x0000580, 0x0000200, 0x0000E00, 0x0000C80 }, - { 0x0B, 0x0000300, 0x0000300, 0x0000D00, 0x0001800 }, - { 0x0C, 0x0000B00, 0x0000400, 0x0001C00, 0x0001900 }, - { 0x0C, 0x0000600, 0x0000600, 0x0001A00, 0x0003000 }, - { 0x0D, 0x0001600, 0x0000800, 0x0003800, 0x0003200 }, - { 0x0D, 0x0000C00, 0x0000C00, 0x0003400, 0x0006000 }, - { 0x0E, 0x0002C00, 0x0001000, 0x0007000, 0x0006400 }, - { 0x0E, 0x0001800, 0x0001800, 0x0006800, 0x000C000 }, - { 0x0F, 0x0005800, 0x0002000, 0x000E000, 0x000C800 }, - { 0x0F, 0x0003000, 0x0003000, 0x000D000, 0x0018000 }, - { 0x10, 0x000B000, 0x0004000, 0x001C000, 0x0019000 }, - { 0x10, 0x0006000, 0x0006000, 0x001A000, 0x0030000 }, - { 0x11, 0x0016000, 0x0008000, 0x0038000, 0x0032000 }, - { 0x11, 0x000C000, 0x000C000, 0x0034000, 0x0060000 }, - { 0x12, 0x002C000, 0x0010000, 0x0070000, 0x0064000 }, - { 0x12, 0x0018000, 0x0018000, 0x0068000, 0x00C0000 }, - { 0x13, 0x0058000, 0x0020000, 0x00E0000, 0x00C8000 }, - { 0x13, 0x0030000, 0x0030000, 0x00D0000, 0x0180000 }, - { 0x14, 0x00B0000, 0x0040000, 0x01C0000, 0x0190000 }, - { 0x14, 0x0060000, 0x0060000, 0x01A0000, 0x0300000 }, - { 0x15, 0x0160000, 0x0080000, 0x0380000, 0x0320000 }, - { 0x15, 0x00C0000, 0x00C0000, 0x0340000, 0x0600000 }, - { 0x16, 0x02C0000, 0x0100000, 0x0700000, 0x0640000 }, - { 0x16, 0x0180000, 0x0180000, 0x0680000, 0x0C00000 }, - { 0x17, 0x0580000, 0x0200000, 0x0E00000, 0x0C80000 }, - { 0x17, 0x0300000, 0x0300000, 0x0D00000, 0x1800000 }, - { 0x18, 0x0B00000, 0x0400000, 0x1C00000, 0x1900000 }, - { 0x18, 0x0600000, 0x0600000, 0x1A00000, 0x3000000 }, - { 0x19, 0x1600000, 0x0800000, 0x3800000, 0x3200000 }, - { 0x19, 0x0C00000, 0x0C00000, 0x3400000, 0x6000000 }, - { 0x1A, 0x2C00000, 0x1000000, 0x7000000, 0x6400000 }, - { 0x1A, 0x1800000, 0x1800000, 0x6800000, 0xC000000 }, -}; - -static int set_bps_params(AVCodecContext *avctx) -{ - switch (avctx->bits_per_raw_sample) { - case 8: - avctx->sample_fmt = AV_SAMPLE_FMT_U8P; - break; - case 16: - avctx->sample_fmt = AV_SAMPLE_FMT_S16P; - break; - case 24: - avctx->sample_fmt = AV_SAMPLE_FMT_S32P; - break; - default: - av_log(avctx, AV_LOG_ERROR, "invalid/unsupported bits per sample: %d\n", - avctx->bits_per_raw_sample); - return AVERROR_INVALIDDATA; - } - - return 0; -} - -static void set_sample_rate_params(AVCodecContext *avctx) -{ - TAKDecContext *s = avctx->priv_data; - int shift = 3 - (avctx->sample_rate / 11025); - shift = FFMAX(0, shift); - s->uval = FFALIGN(avctx->sample_rate + 511 >> 9, 4) << shift; - s->subframe_scale = FFALIGN(avctx->sample_rate + 511 >> 9, 4) << 1; -} - -static av_cold int tak_decode_init(AVCodecContext *avctx) -{ - TAKDecContext *s = avctx->priv_data; - - ff_dsputil_init(&s->dsp, avctx); - - s->avctx = avctx; - avctx->bits_per_raw_sample = avctx->bits_per_coded_sample; - - set_sample_rate_params(avctx); - - return set_bps_params(avctx); -} - -static void decode_lpc(int32_t *coeffs, int mode, int length) -{ - int i; - - if (length < 2) - return; - - if (mode == 1) { - int a1 = *coeffs++; - for (i = 0; i < length - 1 >> 1; i++) { - *coeffs += a1; - coeffs[1] += *coeffs; - a1 = coeffs[1]; - coeffs += 2; - } - if (length - 1 & 1) - *coeffs += a1; - } else if (mode == 2) { - int a1 = coeffs[1]; - int a2 = a1 + *coeffs; - coeffs[1] = a2; - if (length > 2) { - coeffs += 2; - for (i = 0; i < length - 2 >> 1; i++) { - int a3 = *coeffs + a1; - int a4 = a3 + a2; - *coeffs = a4; - a1 = coeffs[1] + a3; - a2 = a1 + a4; - coeffs[1] = a2; - coeffs += 2; - } - if (length & 1) - *coeffs += a1 + a2; - } - } else if (mode == 3) { - int a1 = coeffs[1]; - int a2 = a1 + *coeffs; - coeffs[1] = a2; - if (length > 2) { - int a3 = coeffs[2]; - int a4 = a3 + a1; - int a5 = a4 + a2; - coeffs += 3; - for (i = 0; i < length - 3; i++) { - a3 += *coeffs; - a4 += a3; - a5 += a4; - *coeffs = a5; - coeffs++; - } - } - } -} - -static int decode_segment(TAKDecContext *s, int8_t mode, int32_t *decoded, int len) -{ - struct CParam code; - GetBitContext *gb = &s->gb; - int i; - - if (!mode) { - memset(decoded, 0, len * sizeof(*decoded)); - return 0; - } - - if (mode > FF_ARRAY_ELEMS(xcodes)) - return AVERROR_INVALIDDATA; - code = xcodes[mode - 1]; - - for (i = 0; i < len; i++) { - int x = get_bits_long(gb, code.init); - if (x >= code.escape && get_bits1(gb)) { - x |= 1 << code.init; - if (x >= code.aescape) { - int scale = get_unary(gb, 1, 9); - if (scale == 9) { - int scale_bits = get_bits(gb, 3); - if (scale_bits > 0) { - if (scale_bits == 7) { - scale_bits += get_bits(gb, 5); - if (scale_bits > 29) - return AVERROR_INVALIDDATA; - } - scale = get_bits_long(gb, scale_bits) + 1; - x += code.scale * scale; - } - x += code.bias; - } else - x += code.scale * scale - code.escape; - } else - x -= code.escape; - } - decoded[i] = (x >> 1) ^ -(x & 1); - } - - return 0; -} - -static int decode_residues(TAKDecContext *s, int32_t *decoded, int length) -{ - GetBitContext *gb = &s->gb; - int i, mode, ret; - - if (length > s->nb_samples) - return AVERROR_INVALIDDATA; - - if (get_bits1(gb)) { - int wlength, rval; - - wlength = length / s->uval; - - rval = length - (wlength * s->uval); - - if (rval < s->uval / 2) - rval += s->uval; - else - wlength++; - - if (wlength <= 1 || wlength > 128) - return AVERROR_INVALIDDATA; - - s->coding_mode[0] = mode = get_bits(gb, 6); - - for (i = 1; i < wlength; i++) { - int c = get_unary(gb, 1, 6); - - switch (c) { - case 6: - mode = get_bits(gb, 6); - break; - case 5: - case 4: - case 3: { - /* mode += sign ? (1 - c) : (c - 1) */ - int sign = get_bits1(gb); - mode += (-sign ^ (c - 1)) + sign; - break; - } - case 2: - mode++; - break; - case 1: - mode--; - break; - } - s->coding_mode[i] = mode; - } - - i = 0; - while (i < wlength) { - int len = 0; - - mode = s->coding_mode[i]; - do { - if (i >= wlength - 1) - len += rval; - else - len += s->uval; - i++; - - if (i == wlength) - break; - } while (s->coding_mode[i] == mode); - - if ((ret = decode_segment(s, mode, decoded, len)) < 0) - return ret; - decoded += len; - } - } else { - mode = get_bits(gb, 6); - if ((ret = decode_segment(s, mode, decoded, length)) < 0) - return ret; - } - - return 0; -} - -static int get_bits_esc4(GetBitContext *gb) -{ - if (get_bits1(gb)) - return get_bits(gb, 4) + 1; - else - return 0; -} - -static int decode_subframe(TAKDecContext *s, int32_t *decoded, - int subframe_size, int prev_subframe_size) -{ - GetBitContext *gb = &s->gb; - int tmp, x, y, i, j, ret = 0; - int dshift, size, filter_quant, filter_order; - int tfilter[MAX_PREDICTORS]; - - if (!get_bits1(gb)) - return decode_residues(s, decoded, subframe_size); - - filter_order = predictor_sizes[get_bits(gb, 4)]; - - if (prev_subframe_size > 0 && get_bits1(gb)) { - if (filter_order > prev_subframe_size) - return AVERROR_INVALIDDATA; - - decoded -= filter_order; - subframe_size += filter_order; - - if (filter_order > subframe_size) - return AVERROR_INVALIDDATA; - } else { - int lpc_mode; - - if (filter_order > subframe_size) - return AVERROR_INVALIDDATA; - - lpc_mode = get_bits(gb, 2); - if (lpc_mode > 2) - return AVERROR_INVALIDDATA; - - if ((ret = decode_residues(s, decoded, filter_order)) < 0) - return ret; - - if (lpc_mode) - decode_lpc(decoded, lpc_mode, filter_order); - } - - dshift = get_bits_esc4(gb); - size = get_bits1(gb) + 6; - - filter_quant = 10; - if (get_bits1(gb)) { - filter_quant -= get_bits(gb, 3) + 1; - if (filter_quant < 3) - return AVERROR_INVALIDDATA; - } - - s->predictors[0] = get_sbits(gb, 10); - s->predictors[1] = get_sbits(gb, 10); - s->predictors[2] = get_sbits(gb, size) << (10 - size); - s->predictors[3] = get_sbits(gb, size) << (10 - size); - if (filter_order > 4) { - tmp = size - get_bits1(gb); - - for (i = 4; i < filter_order; i++) { - if (!(i & 3)) - x = tmp - get_bits(gb, 2); - s->predictors[i] = get_sbits(gb, x) << (10 - size); - } - } - - tfilter[0] = s->predictors[0] << 6; - for (i = 1; i < filter_order; i++) { - int32_t *p1 = &tfilter[0]; - int32_t *p2 = &tfilter[i - 1]; - - for (j = 0; j < (i + 1) / 2; j++) { - x = *p1 + (s->predictors[i] * *p2 + 256 >> 9); - *p2 += s->predictors[i] * *p1 + 256 >> 9; - *p1++ = x; - p2--; - } - - tfilter[i] = s->predictors[i] << 6; - } - - x = 1 << (32 - (15 - filter_quant)); - y = 1 << ((15 - filter_quant) - 1); - for (i = 0, j = filter_order - 1; i < filter_order / 2; i++, j--) { - tmp = y + tfilter[j]; - s->filter[j] = x - ((tfilter[i] + y) >> (15 - filter_quant)); - s->filter[i] = x - ((tfilter[j] + y) >> (15 - filter_quant)); - } - - if ((ret = decode_residues(s, &decoded[filter_order], - subframe_size - filter_order)) < 0) - return ret; - - for (i = 0; i < filter_order; i++) - s->residues[i] = *decoded++ >> dshift; - - y = FF_ARRAY_ELEMS(s->residues) - filter_order; - x = subframe_size - filter_order; - while (x > 0) { - tmp = FFMIN(y, x); - - for (i = 0; i < tmp; i++) { - int v = 1 << (filter_quant - 1); - - if (filter_order & -16) - v += s->dsp.scalarproduct_int16(&s->residues[i], s->filter, - filter_order & -16); - for (j = filter_order & -16; j < filter_order; j += 4) { - v += s->residues[i + j + 3] * s->filter[j + 3] + - s->residues[i + j + 2] * s->filter[j + 2] + - s->residues[i + j + 1] * s->filter[j + 1] + - s->residues[i + j ] * s->filter[j ]; - } - v = (av_clip(v >> filter_quant, -8192, 8191) << dshift) - *decoded; - *decoded++ = v; - s->residues[filter_order + i] = v >> dshift; - } - - x -= tmp; - if (x > 0) - memcpy(s->residues, &s->residues[y], 2 * filter_order); - } - - emms_c(); - - return 0; -} - -static int decode_channel(TAKDecContext *s, int chan) -{ - AVCodecContext *avctx = s->avctx; - GetBitContext *gb = &s->gb; - int32_t *decoded = s->decoded[chan]; - int left = s->nb_samples - 1; - int i = 0, ret, prev = 0; - - s->sample_shift[chan] = get_bits_esc4(gb); - if (s->sample_shift[chan] >= avctx->bits_per_raw_sample) - return AVERROR_INVALIDDATA; - - *decoded++ = get_sbits(gb, avctx->bits_per_raw_sample - s->sample_shift[chan]); - s->lpc_mode[chan] = get_bits(gb, 2); - s->nb_subframes = get_bits(gb, 3) + 1; - - if (s->nb_subframes > 1) { - if (get_bits_left(gb) < (s->nb_subframes - 1) * 6) - return AVERROR_INVALIDDATA; - - for (; i < s->nb_subframes - 1; i++) { - int v = get_bits(gb, 6); - - s->subframe_len[i] = (v - prev) * s->subframe_scale; - if (s->subframe_len[i] <= 0) - return AVERROR_INVALIDDATA; - - left -= s->subframe_len[i]; - prev = v; - } - - if (left <= 0) - return AVERROR_INVALIDDATA; - } - s->subframe_len[i] = left; - - prev = 0; - for (i = 0; i < s->nb_subframes; i++) { - if ((ret = decode_subframe(s, decoded, s->subframe_len[i], prev)) < 0) - return ret; - decoded += s->subframe_len[i]; - prev = s->subframe_len[i]; - } - - return 0; -} - -static int decorrelate(TAKDecContext *s, int c1, int c2, int length) -{ - GetBitContext *gb = &s->gb; - int32_t *p1 = s->decoded[c1] + 1; - int32_t *p2 = s->decoded[c2] + 1; - int i; - int dshift, dfactor; - - switch (s->dmode) { - case 1: /* left/side */ - for (i = 0; i < length; i++) { - int32_t a = p1[i]; - int32_t b = p2[i]; - p2[i] = a + b; - } - break; - case 2: /* side/right */ - for (i = 0; i < length; i++) { - int32_t a = p1[i]; - int32_t b = p2[i]; - p1[i] = b - a; - } - break; - case 3: /* side/mid */ - for (i = 0; i < length; i++) { - int32_t a = p1[i]; - int32_t b = p2[i]; - a -= b >> 1; - p1[i] = a; - p2[i] = a + b; - } - break; - case 4: /* side/left with scale factor */ - FFSWAP(int32_t*, p1, p2); - case 5: /* side/right with scale factor */ - dshift = get_bits_esc4(gb); - dfactor = get_sbits(gb, 10); - for (i = 0; i < length; i++) { - int32_t a = p1[i]; - int32_t b = p2[i]; - b = dfactor * (b >> dshift) + 128 >> 8 << dshift; - p1[i] = b - a; - } - break; - case 6: - FFSWAP(int32_t*, p1, p2); - case 7: { - int length2, order_half, filter_order, dval1, dval2; - int tmp, x, code_size; - - if (length < 256) - return AVERROR_INVALIDDATA; - - dshift = get_bits_esc4(gb); - filter_order = 8 << get_bits1(gb); - dval1 = get_bits1(gb); - dval2 = get_bits1(gb); - - for (i = 0; i < filter_order; i++) { - if (!(i & 3)) - code_size = 14 - get_bits(gb, 3); - s->filter[i] = get_sbits(gb, code_size); - } - - order_half = filter_order / 2; - length2 = length - (filter_order - 1); - - /* decorrelate beginning samples */ - if (dval1) { - for (i = 0; i < order_half; i++) { - int32_t a = p1[i]; - int32_t b = p2[i]; - p1[i] = a + b; - } - } - - /* decorrelate ending samples */ - if (dval2) { - for (i = length2 + order_half; i < length; i++) { - int32_t a = p1[i]; - int32_t b = p2[i]; - p1[i] = a + b; - } - } - - - for (i = 0; i < filter_order; i++) - s->residues[i] = *p2++ >> dshift; - - p1 += order_half; - x = FF_ARRAY_ELEMS(s->residues) - filter_order; - for (; length2 > 0; length2 -= tmp) { - tmp = FFMIN(length2, x); - - for (i = 0; i < tmp; i++) - s->residues[filter_order + i] = *p2++ >> dshift; - - for (i = 0; i < tmp; i++) { - int v = 1 << 9; - - if (filter_order == 16) { - v += s->dsp.scalarproduct_int16(&s->residues[i], s->filter, - filter_order); - } else { - v += s->residues[i + 7] * s->filter[7] + - s->residues[i + 6] * s->filter[6] + - s->residues[i + 5] * s->filter[5] + - s->residues[i + 4] * s->filter[4] + - s->residues[i + 3] * s->filter[3] + - s->residues[i + 2] * s->filter[2] + - s->residues[i + 1] * s->filter[1] + - s->residues[i ] * s->filter[0]; - } - - v = (av_clip(v >> 10, -8192, 8191) << dshift) - *p1; - *p1++ = v; - } - - memcpy(s->residues, &s->residues[tmp], 2 * filter_order); - } - - emms_c(); - break; - } - } - - return 0; -} - -static int tak_decode_frame(AVCodecContext *avctx, void *data, - int *got_frame_ptr, AVPacket *pkt) -{ - TAKDecContext *s = avctx->priv_data; - AVFrame *frame = data; - ThreadFrame tframe = { .f = data }; - GetBitContext *gb = &s->gb; - int chan, i, ret, hsize; - - if (pkt->size < TAK_MIN_FRAME_HEADER_BYTES) - return AVERROR_INVALIDDATA; - - if ((ret = init_get_bits8(gb, pkt->data, pkt->size)) < 0) - return ret; - - if ((ret = ff_tak_decode_frame_header(avctx, gb, &s->ti, 0)) < 0) - return ret; - - if (avctx->err_recognition & (AV_EF_CRCCHECK|AV_EF_COMPLIANT)) { - hsize = get_bits_count(gb) / 8; - if (ff_tak_check_crc(pkt->data, hsize)) { - av_log(avctx, AV_LOG_ERROR, "CRC error\n"); - if (avctx->err_recognition & AV_EF_EXPLODE) - return AVERROR_INVALIDDATA; - } - } - - if (s->ti.codec != TAK_CODEC_MONO_STEREO && - s->ti.codec != TAK_CODEC_MULTICHANNEL) { - av_log(avctx, AV_LOG_ERROR, "unsupported codec: %d\n", s->ti.codec); - return AVERROR_PATCHWELCOME; - } - if (s->ti.data_type) { - av_log(avctx, AV_LOG_ERROR, - "unsupported data type: %d\n", s->ti.data_type); - return AVERROR_INVALIDDATA; - } - if (s->ti.codec == TAK_CODEC_MONO_STEREO && s->ti.channels > 2) { - av_log(avctx, AV_LOG_ERROR, - "invalid number of channels: %d\n", s->ti.channels); - return AVERROR_INVALIDDATA; - } - if (s->ti.channels > 6) { - av_log(avctx, AV_LOG_ERROR, - "unsupported number of channels: %d\n", s->ti.channels); - return AVERROR_INVALIDDATA; - } - - if (s->ti.frame_samples <= 0) { - av_log(avctx, AV_LOG_ERROR, "unsupported/invalid number of samples\n"); - return AVERROR_INVALIDDATA; - } - - if (s->ti.bps != avctx->bits_per_raw_sample) { - avctx->bits_per_raw_sample = s->ti.bps; - if ((ret = set_bps_params(avctx)) < 0) - return ret; - } - if (s->ti.sample_rate != avctx->sample_rate) { - avctx->sample_rate = s->ti.sample_rate; - set_sample_rate_params(avctx); - } - if (s->ti.ch_layout) - avctx->channel_layout = s->ti.ch_layout; - avctx->channels = s->ti.channels; - - s->nb_samples = s->ti.last_frame_samples ? s->ti.last_frame_samples - : s->ti.frame_samples; - - frame->nb_samples = s->nb_samples; - if ((ret = ff_thread_get_buffer(avctx, &tframe, 0)) < 0) - return ret; - ff_thread_finish_setup(avctx); - - if (avctx->bits_per_raw_sample <= 16) { - int buf_size = av_samples_get_buffer_size(NULL, avctx->channels, - s->nb_samples, - AV_SAMPLE_FMT_S32P, 0); - av_fast_malloc(&s->decode_buffer, &s->decode_buffer_size, buf_size); - if (!s->decode_buffer) - return AVERROR(ENOMEM); - ret = av_samples_fill_arrays((uint8_t **)s->decoded, NULL, - s->decode_buffer, avctx->channels, - s->nb_samples, AV_SAMPLE_FMT_S32P, 0); - if (ret < 0) - return ret; - } else { - for (chan = 0; chan < avctx->channels; chan++) - s->decoded[chan] = (int32_t *)frame->extended_data[chan]; - } - - if (s->nb_samples < 16) { - for (chan = 0; chan < avctx->channels; chan++) { - int32_t *decoded = s->decoded[chan]; - for (i = 0; i < s->nb_samples; i++) - decoded[i] = get_sbits(gb, avctx->bits_per_raw_sample); - } - } else { - if (s->ti.codec == TAK_CODEC_MONO_STEREO) { - for (chan = 0; chan < avctx->channels; chan++) - if (ret = decode_channel(s, chan)) - return ret; - - if (avctx->channels == 2) { - s->nb_subframes = get_bits(gb, 1) + 1; - if (s->nb_subframes > 1) { - s->subframe_len[1] = get_bits(gb, 6); - } - - s->dmode = get_bits(gb, 3); - if (ret = decorrelate(s, 0, 1, s->nb_samples - 1)) - return ret; - } - } else if (s->ti.codec == TAK_CODEC_MULTICHANNEL) { - if (get_bits1(gb)) { - int ch_mask = 0; - - chan = get_bits(gb, 4) + 1; - if (chan > avctx->channels) - return AVERROR_INVALIDDATA; - - for (i = 0; i < chan; i++) { - int nbit = get_bits(gb, 4); - - if (nbit >= avctx->channels) - return AVERROR_INVALIDDATA; - - if (ch_mask & 1 << nbit) - return AVERROR_INVALIDDATA; - - s->mcdparams[i].present = get_bits1(gb); - if (s->mcdparams[i].present) { - s->mcdparams[i].index = get_bits(gb, 2); - s->mcdparams[i].chan2 = get_bits(gb, 4); - if (s->mcdparams[i].index == 1) { - if ((nbit == s->mcdparams[i].chan2) || - (ch_mask & 1 << s->mcdparams[i].chan2)) - return AVERROR_INVALIDDATA; - - ch_mask |= 1 << s->mcdparams[i].chan2; - } else if (!(ch_mask & 1 << s->mcdparams[i].chan2)) { - return AVERROR_INVALIDDATA; - } - } - s->mcdparams[i].chan1 = nbit; - - ch_mask |= 1 << nbit; - } - } else { - chan = avctx->channels; - for (i = 0; i < chan; i++) { - s->mcdparams[i].present = 0; - s->mcdparams[i].chan1 = i; - } - } - - for (i = 0; i < chan; i++) { - if (s->mcdparams[i].present && s->mcdparams[i].index == 1) - if (ret = decode_channel(s, s->mcdparams[i].chan2)) - return ret; - - if (ret = decode_channel(s, s->mcdparams[i].chan1)) - return ret; - - if (s->mcdparams[i].present) { - s->dmode = mc_dmodes[s->mcdparams[i].index]; - if (ret = decorrelate(s, - s->mcdparams[i].chan2, - s->mcdparams[i].chan1, - s->nb_samples - 1)) - return ret; - } - } - } - - for (chan = 0; chan < avctx->channels; chan++) { - int32_t *decoded = s->decoded[chan]; - - if (s->lpc_mode[chan]) - decode_lpc(decoded, s->lpc_mode[chan], s->nb_samples); - - if (s->sample_shift[chan] > 0) - for (i = 0; i < s->nb_samples; i++) - decoded[i] <<= s->sample_shift[chan]; - } - } - - align_get_bits(gb); - skip_bits(gb, 24); - if (get_bits_left(gb) < 0) - av_log(avctx, AV_LOG_DEBUG, "overread\n"); - else if (get_bits_left(gb) > 0) - av_log(avctx, AV_LOG_DEBUG, "underread\n"); - - if (avctx->err_recognition & (AV_EF_CRCCHECK | AV_EF_COMPLIANT)) { - if (ff_tak_check_crc(pkt->data + hsize, - get_bits_count(gb) / 8 - hsize)) { - av_log(avctx, AV_LOG_ERROR, "CRC error\n"); - if (avctx->err_recognition & AV_EF_EXPLODE) - return AVERROR_INVALIDDATA; - } - } - - /* convert to output buffer */ - switch (avctx->sample_fmt) { - case AV_SAMPLE_FMT_U8P: - for (chan = 0; chan < avctx->channels; chan++) { - uint8_t *samples = (uint8_t *)frame->extended_data[chan]; - int32_t *decoded = s->decoded[chan]; - for (i = 0; i < s->nb_samples; i++) - samples[i] = decoded[i] + 0x80; - } - break; - case AV_SAMPLE_FMT_S16P: - for (chan = 0; chan < avctx->channels; chan++) { - int16_t *samples = (int16_t *)frame->extended_data[chan]; - int32_t *decoded = s->decoded[chan]; - for (i = 0; i < s->nb_samples; i++) - samples[i] = decoded[i]; - } - break; - case AV_SAMPLE_FMT_S32P: - for (chan = 0; chan < avctx->channels; chan++) { - int32_t *samples = (int32_t *)frame->extended_data[chan]; - for (i = 0; i < s->nb_samples; i++) - samples[i] <<= 8; - } - break; - } - - *got_frame_ptr = 1; - - return pkt->size; -} - -static int init_thread_copy(AVCodecContext *avctx) -{ - TAKDecContext *s = avctx->priv_data; - s->avctx = avctx; - return 0; -} - -static int update_thread_context(AVCodecContext *dst, - const AVCodecContext *src) -{ - TAKDecContext *tsrc = src->priv_data; - TAKDecContext *tdst = dst->priv_data; - - if (dst == src) - return 0; - memcpy(&tdst->ti, &tsrc->ti, sizeof(TAKStreamInfo)); - return 0; -} - -static av_cold int tak_decode_close(AVCodecContext *avctx) -{ - TAKDecContext *s = avctx->priv_data; - - av_freep(&s->decode_buffer); - - return 0; -} - -AVCodec ff_tak_decoder = { - .name = "tak", - .long_name = NULL_IF_CONFIG_SMALL("TAK (Tom's lossless Audio Kompressor)"), - .type = AVMEDIA_TYPE_AUDIO, - .id = AV_CODEC_ID_TAK, - .priv_data_size = sizeof(TAKDecContext), - .init = tak_decode_init, - .close = tak_decode_close, - .decode = tak_decode_frame, - .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy), - .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context), - .capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS, - .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_U8P, - AV_SAMPLE_FMT_S16P, - AV_SAMPLE_FMT_S32P, - AV_SAMPLE_FMT_NONE }, -}; 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