chasing indexing error

1 files changed, 0 insertions, 456 deletions

diff --git a/ffmpeg/libavcodec/tta.c b/ffmpeg/libavcodec/tta.c
deleted file mode 100644
index b917881..0000000
--- a/ffmpeg/libavcodec/tta.c
+++ /dev/null
@@ -1,456 +0,0 @@
-/*
- * TTA (The Lossless True Audio) decoder
- * Copyright (c) 2006 Alex Beregszaszi
- *
- * 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
- * TTA (The Lossless True Audio) decoder
- * @see http://www.true-audio.com/
- * @see http://tta.corecodec.org/
- * @author Alex Beregszaszi
- */
-
-#define BITSTREAM_READER_LE
-#include <limits.h>
-#include "ttadata.h"
-#include "avcodec.h"
-#include "get_bits.h"
-#include "thread.h"
-#include "unary.h"
-#include "internal.h"
-#include "libavutil/crc.h"
-#include "libavutil/intreadwrite.h"
-#include "libavutil/opt.h"
-
-#define FORMAT_SIMPLE    1
-#define FORMAT_ENCRYPTED 2
-
-typedef struct TTAContext {
-    AVClass *class;
-    AVCodecContext *avctx;
-    const AVCRC *crc_table;
-
-    int format, channels, bps;
-    unsigned data_length;
-    int frame_length, last_frame_length;
-
-    int32_t *decode_buffer;
-
-    uint8_t crc_pass[8];
-    uint8_t *pass;
-    TTAChannel *ch_ctx;
-} TTAContext;
-
-static inline void ttafilter_process(TTAFilter *c, int32_t *in)
-{
-    register int32_t *dl = c->dl, *qm = c->qm, *dx = c->dx, sum = c->round;
-
-    if (c->error < 0) {
-        qm[0] -= dx[0]; qm[1] -= dx[1]; qm[2] -= dx[2]; qm[3] -= dx[3];
-        qm[4] -= dx[4]; qm[5] -= dx[5]; qm[6] -= dx[6]; qm[7] -= dx[7];
-    } else if (c->error > 0) {
-        qm[0] += dx[0]; qm[1] += dx[1]; qm[2] += dx[2]; qm[3] += dx[3];
-        qm[4] += dx[4]; qm[5] += dx[5]; qm[6] += dx[6]; qm[7] += dx[7];
-    }
-
-    sum += dl[0] * qm[0] + dl[1] * qm[1] + dl[2] * qm[2] + dl[3] * qm[3] +
-           dl[4] * qm[4] + dl[5] * qm[5] + dl[6] * qm[6] + dl[7] * qm[7];
-
-    dx[0] = dx[1]; dx[1] = dx[2]; dx[2] = dx[3]; dx[3] = dx[4];
-    dl[0] = dl[1]; dl[1] = dl[2]; dl[2] = dl[3]; dl[3] = dl[4];
-
-    dx[4] = ((dl[4] >> 30) | 1);
-    dx[5] = ((dl[5] >> 30) | 2) & ~1;
-    dx[6] = ((dl[6] >> 30) | 2) & ~1;
-    dx[7] = ((dl[7] >> 30) | 4) & ~3;
-
-    c->error = *in;
-    *in += (sum >> c->shift);
-
-    dl[4] = -dl[5]; dl[5] = -dl[6];
-    dl[6] = *in - dl[7]; dl[7] = *in;
-    dl[5] += dl[6]; dl[4] += dl[5];
-}
-
-static const int64_t tta_channel_layouts[7] = {
-    AV_CH_LAYOUT_STEREO,
-    AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY,
-    AV_CH_LAYOUT_QUAD,
-    0,
-    AV_CH_LAYOUT_5POINT1_BACK,
-    AV_CH_LAYOUT_5POINT1_BACK|AV_CH_BACK_CENTER,
-    AV_CH_LAYOUT_7POINT1_WIDE
-};
-
-static int tta_check_crc(TTAContext *s, const uint8_t *buf, int buf_size)
-{
-    uint32_t crc, CRC;
-
-    CRC = AV_RL32(buf + buf_size);
-    crc = av_crc(s->crc_table, 0xFFFFFFFFU, buf, buf_size);
-    if (CRC != (crc ^ 0xFFFFFFFFU)) {
-        av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    return 0;
-}
-
-static uint64_t tta_check_crc64(uint8_t *pass)
-{
-    uint64_t crc = UINT64_MAX, poly = 0x42F0E1EBA9EA3693U;
-    uint8_t *end = pass + strlen(pass);
-    int i;
-
-    while (pass < end) {
-        crc ^= (uint64_t)*pass++ << 56;
-        for (i = 0; i < 8; i++)
-            crc = (crc << 1) ^ (poly & (((int64_t) crc) >> 63));
-    }
-
-    return crc ^ UINT64_MAX;
-}
-
-static int allocate_buffers(AVCodecContext *avctx)
-{
-    TTAContext *s = avctx->priv_data;
-
-    if (s->bps < 3) {
-        s->decode_buffer = av_mallocz(sizeof(int32_t)*s->frame_length*s->channels);
-        if (!s->decode_buffer)
-            return AVERROR(ENOMEM);
-    } else
-        s->decode_buffer = NULL;
-    s->ch_ctx = av_malloc(avctx->channels * sizeof(*s->ch_ctx));
-    if (!s->ch_ctx) {
-        av_freep(&s->decode_buffer);
-        return AVERROR(ENOMEM);
-    }
-
-    return 0;
-}
-
-static av_cold int tta_decode_init(AVCodecContext * avctx)
-{
-    TTAContext *s = avctx->priv_data;
-    GetBitContext gb;
-    int total_frames;
-
-    s->avctx = avctx;
-
-    // 30bytes includes TTA1 header
-    if (avctx->extradata_size < 22)
-        return AVERROR_INVALIDDATA;
-
-    s->crc_table = av_crc_get_table(AV_CRC_32_IEEE_LE);
-    init_get_bits8(&gb, avctx->extradata, avctx->extradata_size);
-    if (show_bits_long(&gb, 32) == AV_RL32("TTA1")) {
-        /* signature */
-        skip_bits_long(&gb, 32);
-
-        s->format = get_bits(&gb, 16);
-        if (s->format > 2) {
-            av_log(avctx, AV_LOG_ERROR, "Invalid format\n");
-            return AVERROR_INVALIDDATA;
-        }
-        if (s->format == FORMAT_ENCRYPTED) {
-            if (!s->pass) {
-                av_log(avctx, AV_LOG_ERROR, "Missing password for encrypted stream. Please use the -password option\n");
-                return AVERROR(EINVAL);
-            }
-            AV_WL64(s->crc_pass, tta_check_crc64(s->pass));
-        }
-        avctx->channels = s->channels = get_bits(&gb, 16);
-        if (s->channels > 1 && s->channels < 9)
-            avctx->channel_layout = tta_channel_layouts[s->channels-2];
-        avctx->bits_per_raw_sample = get_bits(&gb, 16);
-        s->bps = (avctx->bits_per_raw_sample + 7) / 8;
-        avctx->sample_rate = get_bits_long(&gb, 32);
-        s->data_length = get_bits_long(&gb, 32);
-        skip_bits_long(&gb, 32); // CRC32 of header
-
-        if (s->channels == 0) {
-            av_log(avctx, AV_LOG_ERROR, "Invalid number of channels\n");
-            return AVERROR_INVALIDDATA;
-        } else if (avctx->sample_rate == 0) {
-            av_log(avctx, AV_LOG_ERROR, "Invalid samplerate\n");
-            return AVERROR_INVALIDDATA;
-        }
-
-        switch(s->bps) {
-        case 1: avctx->sample_fmt = AV_SAMPLE_FMT_U8; break;
-        case 2:
-            avctx->sample_fmt = AV_SAMPLE_FMT_S16;
-            break;
-        case 3:
-            avctx->sample_fmt = AV_SAMPLE_FMT_S32;
-            break;
-        //case 4: avctx->sample_fmt = AV_SAMPLE_FMT_S32; break;
-        default:
-            av_log(avctx, AV_LOG_ERROR, "Invalid/unsupported sample format.\n");
-            return AVERROR_INVALIDDATA;
-        }
-
-        // prevent overflow
-        if (avctx->sample_rate > 0x7FFFFFu) {
-            av_log(avctx, AV_LOG_ERROR, "sample_rate too large\n");
-            return AVERROR(EINVAL);
-        }
-        s->frame_length = 256 * avctx->sample_rate / 245;
-
-        s->last_frame_length = s->data_length % s->frame_length;
-        total_frames = s->data_length / s->frame_length +
-                       (s->last_frame_length ? 1 : 0);
-
-        av_log(avctx, AV_LOG_DEBUG, "format: %d chans: %d bps: %d rate: %d block: %d\n",
-            s->format, avctx->channels, avctx->bits_per_coded_sample, avctx->sample_rate,
-            avctx->block_align);
-        av_log(avctx, AV_LOG_DEBUG, "data_length: %d frame_length: %d last: %d total: %d\n",
-            s->data_length, s->frame_length, s->last_frame_length, total_frames);
-
-        if(s->frame_length >= UINT_MAX / (s->channels * sizeof(int32_t))){
-            av_log(avctx, AV_LOG_ERROR, "frame_length too large\n");
-            return AVERROR_INVALIDDATA;
-        }
-    } else {
-        av_log(avctx, AV_LOG_ERROR, "Wrong extradata present\n");
-        return AVERROR_INVALIDDATA;
-    }
-
-    return allocate_buffers(avctx);
-}
-
-static int tta_decode_frame(AVCodecContext *avctx, void *data,
-                            int *got_frame_ptr, AVPacket *avpkt)
-{
-    AVFrame *frame     = data;
-    ThreadFrame tframe = { .f = data };
-    const uint8_t *buf = avpkt->data;
-    int buf_size = avpkt->size;
-    TTAContext *s = avctx->priv_data;
-    GetBitContext gb;
-    int i, ret;
-    int cur_chan = 0, framelen = s->frame_length;
-    int32_t *p;
-
-    if (avctx->err_recognition & AV_EF_CRCCHECK) {
-        if (buf_size < 4 ||
-            (tta_check_crc(s, buf, buf_size - 4) && avctx->err_recognition & AV_EF_EXPLODE))
-            return AVERROR_INVALIDDATA;
-    }
-
-    if ((ret = init_get_bits8(&gb, avpkt->data, avpkt->size)) < 0)
-        return ret;
-
-    /* get output buffer */
-    frame->nb_samples = framelen;
-    if ((ret = ff_thread_get_buffer(avctx, &tframe, 0)) < 0)
-        return ret;
-
-    // decode directly to output buffer for 24-bit sample format
-    if (s->bps == 3)
-        s->decode_buffer = (int32_t *)frame->data[0];
-
-    // init per channel states
-    for (i = 0; i < s->channels; i++) {
-        TTAFilter *filter = &s->ch_ctx[i].filter;
-        s->ch_ctx[i].predictor = 0;
-        ff_tta_filter_init(filter, ff_tta_filter_configs[s->bps-1]);
-        if (s->format == FORMAT_ENCRYPTED) {
-            int i;
-            for (i = 0; i < 8; i++)
-                filter->qm[i] = sign_extend(s->crc_pass[i], 8);
-        }
-        ff_tta_rice_init(&s->ch_ctx[i].rice, 10, 10);
-    }
-
-    i = 0;
-    for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++) {
-        int32_t *predictor = &s->ch_ctx[cur_chan].predictor;
-        TTAFilter *filter = &s->ch_ctx[cur_chan].filter;
-        TTARice *rice = &s->ch_ctx[cur_chan].rice;
-        uint32_t unary, depth, k;
-        int32_t value;
-
-        unary = get_unary(&gb, 0, get_bits_left(&gb));
-
-        if (unary == 0) {
-            depth = 0;
-            k = rice->k0;
-        } else {
-            depth = 1;
-            k = rice->k1;
-            unary--;
-        }
-
-        if (get_bits_left(&gb) < k) {
-            ret = AVERROR_INVALIDDATA;
-            goto error;
-        }
-
-        if (k) {
-            if (k > MIN_CACHE_BITS) {
-                ret = AVERROR_INVALIDDATA;
-                goto error;
-            }
-            value = (unary << k) + get_bits(&gb, k);
-        } else
-            value = unary;
-
-        // FIXME: copy paste from original
-        switch (depth) {
-        case 1:
-            rice->sum1 += value - (rice->sum1 >> 4);
-            if (rice->k1 > 0 && rice->sum1 < ff_tta_shift_16[rice->k1])
-                rice->k1--;
-            else if(rice->sum1 > ff_tta_shift_16[rice->k1 + 1])
-                rice->k1++;
-            value += ff_tta_shift_1[rice->k0];
-        default:
-            rice->sum0 += value - (rice->sum0 >> 4);
-            if (rice->k0 > 0 && rice->sum0 < ff_tta_shift_16[rice->k0])
-                rice->k0--;
-            else if(rice->sum0 > ff_tta_shift_16[rice->k0 + 1])
-                rice->k0++;
-        }
-
-        // extract coded value
-        *p = 1 + ((value >> 1) ^ ((value & 1) - 1));
-
-        // run hybrid filter
-        ttafilter_process(filter, p);
-
-        // fixed order prediction
-#define PRED(x, k) (int32_t)((((uint64_t)x << k) - x) >> k)
-        switch (s->bps) {
-        case 1: *p += PRED(*predictor, 4); break;
-        case 2:
-        case 3: *p += PRED(*predictor, 5); break;
-        case 4: *p +=      *predictor;     break;
-        }
-        *predictor = *p;
-
-        // flip channels
-        if (cur_chan < (s->channels-1))
-            cur_chan++;
-        else {
-            // decorrelate in case of multiple channels
-            if (s->channels > 1) {
-                int32_t *r = p - 1;
-                for (*p += *r / 2; r > p - s->channels; r--)
-                    *r = *(r + 1) - *r;
-            }
-            cur_chan = 0;
-            i++;
-            // check for last frame
-            if (i == s->last_frame_length && get_bits_left(&gb) / 8 == 4) {
-                frame->nb_samples = framelen = s->last_frame_length;
-                break;
-            }
-        }
-    }
-
-    align_get_bits(&gb);
-    if (get_bits_left(&gb) < 32) {
-        ret = AVERROR_INVALIDDATA;
-        goto error;
-    }
-    skip_bits_long(&gb, 32); // frame crc
-
-    // convert to output buffer
-    switch (s->bps) {
-    case 1: {
-        uint8_t *samples = (uint8_t *)frame->data[0];
-        for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++)
-            *samples++ = *p + 0x80;
-        break;
-        }
-    case 2: {
-        int16_t *samples = (int16_t *)frame->data[0];
-        for (p = s->decode_buffer; p < s->decode_buffer + (framelen * s->channels); p++)
-            *samples++ = *p;
-        break;
-        }
-    case 3: {
-        // shift samples for 24-bit sample format
-        int32_t *samples = (int32_t *)frame->data[0];
-        for (i = 0; i < framelen * s->channels; i++)
-            *samples++ <<= 8;
-        // reset decode buffer
-        s->decode_buffer = NULL;
-        break;
-        }
-    }
-
-    *got_frame_ptr = 1;
-
-    return buf_size;
-error:
-    // reset decode buffer
-    if (s->bps == 3)
-        s->decode_buffer = NULL;
-    return ret;
-}
-
-static int init_thread_copy(AVCodecContext *avctx)
-{
-    TTAContext *s = avctx->priv_data;
-    s->avctx = avctx;
-    return allocate_buffers(avctx);
-}
-
-static av_cold int tta_decode_close(AVCodecContext *avctx) {
-    TTAContext *s = avctx->priv_data;
-
-    if (s->bps < 3)
-        av_free(s->decode_buffer);
-    s->decode_buffer = NULL;
-    av_freep(&s->ch_ctx);
-
-    return 0;
-}
-
-#define OFFSET(x) offsetof(TTAContext, x)
-#define DEC (AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM)
-static const AVOption options[] = {
-    { "password", "Set decoding password", OFFSET(pass), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, DEC },
-    { NULL },
-};
-
-static const AVClass tta_decoder_class = {
-    .class_name = "TTA Decoder",
-    .item_name  = av_default_item_name,
-    .option     = options,
-    .version    = LIBAVUTIL_VERSION_INT,
-};
-
-AVCodec ff_tta_decoder = {
-    .name           = "tta",
-    .long_name      = NULL_IF_CONFIG_SMALL("TTA (True Audio)"),
-    .type           = AVMEDIA_TYPE_AUDIO,
-    .id             = AV_CODEC_ID_TTA,
-    .priv_data_size = sizeof(TTAContext),
-    .init           = tta_decode_init,
-    .close          = tta_decode_close,
-    .decode         = tta_decode_frame,
-    .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy),
-    .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,
-    .priv_class     = &tta_decoder_class,
-};