making act segmenter

1 files changed, 0 insertions, 488 deletions

diff --git a/ffmpeg1/libavcodec/wma.c b/ffmpeg1/libavcodec/wma.c
deleted file mode 100644
index 1e6ca61..0000000
--- a/ffmpeg1/libavcodec/wma.c
+++ /dev/null
@@ -1,488 +0,0 @@
-/*
- * WMA compatible codec
- * Copyright (c) 2002-2007 The FFmpeg Project
- *
- * 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
- */
-
-#include "avcodec.h"
-#include "sinewin.h"
-#include "wma.h"
-#include "wma_common.h"
-#include "wmadata.h"
-
-#undef NDEBUG
-#include <assert.h>
-
-/* XXX: use same run/length optimization as mpeg decoders */
-//FIXME maybe split decode / encode or pass flag
-static void init_coef_vlc(VLC *vlc, uint16_t **prun_table,
-                          float **plevel_table, uint16_t **pint_table,
-                          const CoefVLCTable *vlc_table)
-{
-    int n = vlc_table->n;
-    const uint8_t  *table_bits   = vlc_table->huffbits;
-    const uint32_t *table_codes  = vlc_table->huffcodes;
-    const uint16_t *levels_table = vlc_table->levels;
-    uint16_t *run_table, *level_table, *int_table;
-    float *flevel_table;
-    int i, l, j, k, level;
-
-    init_vlc(vlc, VLCBITS, n, table_bits, 1, 1, table_codes, 4, 4, 0);
-
-    run_table   = av_malloc(n * sizeof(uint16_t));
-    level_table = av_malloc(n * sizeof(uint16_t));
-    flevel_table= av_malloc(n * sizeof(*flevel_table));
-    int_table   = av_malloc(n * sizeof(uint16_t));
-    i = 2;
-    level = 1;
-    k = 0;
-    while (i < n) {
-        int_table[k] = i;
-        l = levels_table[k++];
-        for (j = 0; j < l; j++) {
-            run_table[i]   = j;
-            level_table[i] = level;
-            flevel_table[i]= level;
-            i++;
-        }
-        level++;
-    }
-    *prun_table   = run_table;
-    *plevel_table = flevel_table;
-    *pint_table   = int_table;
-    av_free(level_table);
-}
-
-int ff_wma_init(AVCodecContext *avctx, int flags2)
-{
-    WMACodecContext *s = avctx->priv_data;
-    int i;
-    float bps1, high_freq;
-    volatile float bps;
-    int sample_rate1;
-    int coef_vlc_table;
-
-    if (   avctx->sample_rate <= 0 || avctx->sample_rate > 50000
-        || avctx->channels    <= 0 || avctx->channels    > 2
-        || avctx->bit_rate    <= 0)
-        return -1;
-
-    ff_fmt_convert_init(&s->fmt_conv, avctx);
-    avpriv_float_dsp_init(&s->fdsp, avctx->flags & CODEC_FLAG_BITEXACT);
-
-    if (avctx->codec->id == AV_CODEC_ID_WMAV1) {
-        s->version = 1;
-    } else {
-        s->version = 2;
-    }
-
-    /* compute MDCT block size */
-    s->frame_len_bits = ff_wma_get_frame_len_bits(avctx->sample_rate,
-                                                  s->version, 0);
-    s->next_block_len_bits = s->frame_len_bits;
-    s->prev_block_len_bits = s->frame_len_bits;
-    s->block_len_bits      = s->frame_len_bits;
-
-    s->frame_len = 1 << s->frame_len_bits;
-    if (s->use_variable_block_len) {
-        int nb_max, nb;
-        nb = ((flags2 >> 3) & 3) + 1;
-        if ((avctx->bit_rate / avctx->channels) >= 32000)
-            nb += 2;
-        nb_max = s->frame_len_bits - BLOCK_MIN_BITS;
-        if (nb > nb_max)
-            nb = nb_max;
-        s->nb_block_sizes = nb + 1;
-    } else {
-        s->nb_block_sizes = 1;
-    }
-
-    /* init rate dependent parameters */
-    s->use_noise_coding = 1;
-    high_freq = avctx->sample_rate * 0.5;
-
-    /* if version 2, then the rates are normalized */
-    sample_rate1 = avctx->sample_rate;
-    if (s->version == 2) {
-        if (sample_rate1 >= 44100) {
-            sample_rate1 = 44100;
-        } else if (sample_rate1 >= 22050) {
-            sample_rate1 = 22050;
-        } else if (sample_rate1 >= 16000) {
-            sample_rate1 = 16000;
-        } else if (sample_rate1 >= 11025) {
-            sample_rate1 = 11025;
-        } else if (sample_rate1 >= 8000) {
-            sample_rate1 = 8000;
-        }
-    }
-
-    bps = (float)avctx->bit_rate / (float)(avctx->channels * avctx->sample_rate);
-    s->byte_offset_bits = av_log2((int)(bps * s->frame_len / 8.0 + 0.5)) + 2;
-    if (s->byte_offset_bits + 3 > MIN_CACHE_BITS) {
-        av_log(avctx, AV_LOG_ERROR, "byte_offset_bits %d is too large\n", s->byte_offset_bits);
-        return AVERROR_PATCHWELCOME;
-    }
-
-    /* compute high frequency value and choose if noise coding should
-       be activated */
-    bps1 = bps;
-    if (avctx->channels == 2)
-        bps1 = bps * 1.6;
-    if (sample_rate1 == 44100) {
-        if (bps1 >= 0.61) {
-            s->use_noise_coding = 0;
-        } else {
-            high_freq = high_freq * 0.4;
-        }
-    } else if (sample_rate1 == 22050) {
-        if (bps1 >= 1.16) {
-            s->use_noise_coding = 0;
-        } else if (bps1 >= 0.72) {
-            high_freq = high_freq * 0.7;
-        } else {
-            high_freq = high_freq * 0.6;
-        }
-    } else if (sample_rate1 == 16000) {
-        if (bps > 0.5) {
-            high_freq = high_freq * 0.5;
-        } else {
-            high_freq = high_freq * 0.3;
-        }
-    } else if (sample_rate1 == 11025) {
-        high_freq = high_freq * 0.7;
-    } else if (sample_rate1 == 8000) {
-        if (bps <= 0.625) {
-            high_freq = high_freq * 0.5;
-        } else if (bps > 0.75) {
-            s->use_noise_coding = 0;
-        } else {
-            high_freq = high_freq * 0.65;
-        }
-    } else {
-        if (bps >= 0.8) {
-            high_freq = high_freq * 0.75;
-        } else if (bps >= 0.6) {
-            high_freq = high_freq * 0.6;
-        } else {
-            high_freq = high_freq * 0.5;
-        }
-    }
-    av_dlog(s->avctx, "flags2=0x%x\n", flags2);
-    av_dlog(s->avctx, "version=%d channels=%d sample_rate=%d bitrate=%d block_align=%d\n",
-            s->version, avctx->channels, avctx->sample_rate, avctx->bit_rate,
-            avctx->block_align);
-    av_dlog(s->avctx, "bps=%f bps1=%f high_freq=%f bitoffset=%d\n",
-            bps, bps1, high_freq, s->byte_offset_bits);
-    av_dlog(s->avctx, "use_noise_coding=%d use_exp_vlc=%d nb_block_sizes=%d\n",
-            s->use_noise_coding, s->use_exp_vlc, s->nb_block_sizes);
-
-    /* compute the scale factor band sizes for each MDCT block size */
-    {
-        int a, b, pos, lpos, k, block_len, i, j, n;
-        const uint8_t *table;
-
-        if (s->version == 1) {
-            s->coefs_start = 3;
-        } else {
-            s->coefs_start = 0;
-        }
-        for (k = 0; k < s->nb_block_sizes; k++) {
-            block_len = s->frame_len >> k;
-
-            if (s->version == 1) {
-                lpos = 0;
-                for (i = 0; i < 25; i++) {
-                    a = ff_wma_critical_freqs[i];
-                    b = avctx->sample_rate;
-                    pos = ((block_len * 2 * a) + (b >> 1)) / b;
-                    if (pos > block_len)
-                        pos = block_len;
-                    s->exponent_bands[0][i] = pos - lpos;
-                    if (pos >= block_len) {
-                        i++;
-                        break;
-                    }
-                    lpos = pos;
-                }
-                s->exponent_sizes[0] = i;
-            } else {
-                /* hardcoded tables */
-                table = NULL;
-                a = s->frame_len_bits - BLOCK_MIN_BITS - k;
-                if (a < 3) {
-                    if (avctx->sample_rate >= 44100) {
-                        table = exponent_band_44100[a];
-                    } else if (avctx->sample_rate >= 32000) {
-                        table = exponent_band_32000[a];
-                    } else if (avctx->sample_rate >= 22050) {
-                        table = exponent_band_22050[a];
-                    }
-                }
-                if (table) {
-                    n = *table++;
-                    for (i = 0; i < n; i++)
-                        s->exponent_bands[k][i] = table[i];
-                    s->exponent_sizes[k] = n;
-                } else {
-                    j = 0;
-                    lpos = 0;
-                    for (i = 0; i < 25; i++) {
-                        a = ff_wma_critical_freqs[i];
-                        b = avctx->sample_rate;
-                        pos = ((block_len * 2 * a) + (b << 1)) / (4 * b);
-                        pos <<= 2;
-                        if (pos > block_len)
-                            pos = block_len;
-                        if (pos > lpos)
-                            s->exponent_bands[k][j++] = pos - lpos;
-                        if (pos >= block_len)
-                            break;
-                        lpos = pos;
-                    }
-                    s->exponent_sizes[k] = j;
-                }
-            }
-
-            /* max number of coefs */
-            s->coefs_end[k] = (s->frame_len - ((s->frame_len * 9) / 100)) >> k;
-            /* high freq computation */
-            s->high_band_start[k] = (int)((block_len * 2 * high_freq) /
-                                          avctx->sample_rate + 0.5);
-            n = s->exponent_sizes[k];
-            j = 0;
-            pos = 0;
-            for (i = 0; i < n; i++) {
-                int start, end;
-                start = pos;
-                pos += s->exponent_bands[k][i];
-                end = pos;
-                if (start < s->high_band_start[k])
-                    start = s->high_band_start[k];
-                if (end > s->coefs_end[k])
-                    end = s->coefs_end[k];
-                if (end > start)
-                    s->exponent_high_bands[k][j++] = end - start;
-            }
-            s->exponent_high_sizes[k] = j;
-#if 0
-            tprintf(s->avctx, "%5d: coefs_end=%d high_band_start=%d nb_high_bands=%d: ",
-                    s->frame_len >> k,
-                    s->coefs_end[k],
-                    s->high_band_start[k],
-                    s->exponent_high_sizes[k]);
-            for (j = 0; j < s->exponent_high_sizes[k]; j++)
-                tprintf(s->avctx, " %d", s->exponent_high_bands[k][j]);
-            tprintf(s->avctx, "\n");
-#endif
-        }
-    }
-
-#ifdef TRACE
-    {
-        int i, j;
-        for (i = 0; i < s->nb_block_sizes; i++) {
-            tprintf(s->avctx, "%5d: n=%2d:",
-                    s->frame_len >> i,
-                    s->exponent_sizes[i]);
-            for (j = 0; j < s->exponent_sizes[i]; j++)
-                tprintf(s->avctx, " %d", s->exponent_bands[i][j]);
-            tprintf(s->avctx, "\n");
-        }
-    }
-#endif
-
-    /* init MDCT windows : simple sinus window */
-    for (i = 0; i < s->nb_block_sizes; i++) {
-        ff_init_ff_sine_windows(s->frame_len_bits - i);
-        s->windows[i] = ff_sine_windows[s->frame_len_bits - i];
-    }
-
-    s->reset_block_lengths = 1;
-
-    if (s->use_noise_coding) {
-
-        /* init the noise generator */
-        if (s->use_exp_vlc) {
-            s->noise_mult = 0.02;
-        } else {
-            s->noise_mult = 0.04;
-        }
-
-#ifdef TRACE
-        for (i = 0; i < NOISE_TAB_SIZE; i++)
-            s->noise_table[i] = 1.0 * s->noise_mult;
-#else
-        {
-            unsigned int seed;
-            float norm;
-            seed = 1;
-            norm = (1.0 / (float)(1LL << 31)) * sqrt(3) * s->noise_mult;
-            for (i = 0; i < NOISE_TAB_SIZE; i++) {
-                seed = seed * 314159 + 1;
-                s->noise_table[i] = (float)((int)seed) * norm;
-            }
-        }
-#endif
-    }
-
-    /* choose the VLC tables for the coefficients */
-    coef_vlc_table = 2;
-    if (avctx->sample_rate >= 32000) {
-        if (bps1 < 0.72) {
-            coef_vlc_table = 0;
-        } else if (bps1 < 1.16) {
-            coef_vlc_table = 1;
-        }
-    }
-    s->coef_vlcs[0]= &coef_vlcs[coef_vlc_table * 2    ];
-    s->coef_vlcs[1]= &coef_vlcs[coef_vlc_table * 2 + 1];
-    init_coef_vlc(&s->coef_vlc[0], &s->run_table[0], &s->level_table[0], &s->int_table[0],
-                  s->coef_vlcs[0]);
-    init_coef_vlc(&s->coef_vlc[1], &s->run_table[1], &s->level_table[1], &s->int_table[1],
-                  s->coef_vlcs[1]);
-
-    return 0;
-}
-
-int ff_wma_total_gain_to_bits(int total_gain)
-{
-         if (total_gain < 15) return 13;
-    else if (total_gain < 32) return 12;
-    else if (total_gain < 40) return 11;
-    else if (total_gain < 45) return 10;
-    else                      return  9;
-}
-
-int ff_wma_end(AVCodecContext *avctx)
-{
-    WMACodecContext *s = avctx->priv_data;
-    int i;
-
-    for (i = 0; i < s->nb_block_sizes; i++)
-        ff_mdct_end(&s->mdct_ctx[i]);
-
-    if (s->use_exp_vlc) {
-        ff_free_vlc(&s->exp_vlc);
-    }
-    if (s->use_noise_coding) {
-        ff_free_vlc(&s->hgain_vlc);
-    }
-    for (i = 0; i < 2; i++) {
-        ff_free_vlc(&s->coef_vlc[i]);
-        av_free(s->run_table[i]);
-        av_free(s->level_table[i]);
-        av_free(s->int_table[i]);
-    }
-
-    return 0;
-}
-
-/**
- * Decode an uncompressed coefficient.
- * @param gb GetBitContext
- * @return the decoded coefficient
- */
-unsigned int ff_wma_get_large_val(GetBitContext* gb)
-{
-    /** consumes up to 34 bits */
-    int n_bits = 8;
-    /** decode length */
-    if (get_bits1(gb)) {
-        n_bits += 8;
-        if (get_bits1(gb)) {
-            n_bits += 8;
-            if (get_bits1(gb)) {
-                n_bits += 7;
-            }
-        }
-    }
-    return get_bits_long(gb, n_bits);
-}
-
-/**
- * Decode run level compressed coefficients.
- * @param avctx codec context
- * @param gb bitstream reader context
- * @param vlc vlc table for get_vlc2
- * @param level_table level codes
- * @param run_table run codes
- * @param version 0 for wma1,2 1 for wmapro
- * @param ptr output buffer
- * @param offset offset in the output buffer
- * @param num_coefs number of input coefficents
- * @param block_len input buffer length (2^n)
- * @param frame_len_bits number of bits for escaped run codes
- * @param coef_nb_bits number of bits for escaped level codes
- * @return 0 on success, -1 otherwise
- */
-int ff_wma_run_level_decode(AVCodecContext* avctx, GetBitContext* gb,
-                            VLC *vlc,
-                            const float *level_table, const uint16_t *run_table,
-                            int version, WMACoef *ptr, int offset,
-                            int num_coefs, int block_len, int frame_len_bits,
-                            int coef_nb_bits)
-{
-    int code, level, sign;
-    const uint32_t *ilvl = (const uint32_t*)level_table;
-    uint32_t *iptr = (uint32_t*)ptr;
-    const unsigned int coef_mask = block_len - 1;
-    for (; offset < num_coefs; offset++) {
-        code = get_vlc2(gb, vlc->table, VLCBITS, VLCMAX);
-        if (code > 1) {
-            /** normal code */
-            offset += run_table[code];
-            sign = get_bits1(gb) - 1;
-            iptr[offset & coef_mask] = ilvl[code] ^ sign<<31;
-        } else if (code == 1) {
-            /** EOB */
-            break;
-        } else {
-            /** escape */
-            if (!version) {
-                level = get_bits(gb, coef_nb_bits);
-                /** NOTE: this is rather suboptimal. reading
-                    block_len_bits would be better */
-                offset += get_bits(gb, frame_len_bits);
-            } else {
-                level = ff_wma_get_large_val(gb);
-                /** escape decode */
-                if (get_bits1(gb)) {
-                    if (get_bits1(gb)) {
-                        if (get_bits1(gb)) {
-                            av_log(avctx,AV_LOG_ERROR,
-                                "broken escape sequence\n");
-                            return -1;
-                        } else
-                            offset += get_bits(gb, frame_len_bits) + 4;
-                    } else
-                        offset += get_bits(gb, 2) + 1;
-                }
-            }
-            sign = get_bits1(gb) - 1;
-            ptr[offset & coef_mask] = (level^sign) - sign;
-        }
-    }
-    /** NOTE: EOB can be omitted */
-    if (offset > num_coefs) {
-        av_log(avctx, AV_LOG_ERROR, "overflow in spectral RLE, ignoring\n");
-        return -1;
-    }
-
-    return 0;
-}