Esempio n. 1
0
/* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
static int rgbToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
                           int srcSliceY, int srcSliceH, uint8_t *dst[],
                           int dstStride[])

{
    const enum AVPixelFormat srcFormat = c->srcFormat;
    const enum AVPixelFormat dstFormat = c->dstFormat;
    const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(c->srcFormat);
    const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(c->dstFormat);
    const int srcBpp = (c->srcFormatBpp + 7) >> 3;
    const int dstBpp = (c->dstFormatBpp + 7) >> 3;
    rgbConvFn conv = findRgbConvFn(c);

    if (!conv) {
        av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
               av_get_pix_fmt_name(srcFormat), av_get_pix_fmt_name(dstFormat));
    } else {
        const uint8_t *srcPtr = src[0];
              uint8_t *dstPtr = dst[0];
        int src_bswap = IS_NOT_NE(c->srcFormatBpp, desc_src);
        int dst_bswap = IS_NOT_NE(c->dstFormatBpp, desc_dst);

        if ((srcFormat == AV_PIX_FMT_RGB32_1 || srcFormat == AV_PIX_FMT_BGR32_1) &&
            !isRGBA32(dstFormat))
            srcPtr += ALT32_CORR;

        if ((dstFormat == AV_PIX_FMT_RGB32_1 || dstFormat == AV_PIX_FMT_BGR32_1) &&
            !isRGBA32(srcFormat))
            dstPtr += ALT32_CORR;

        if (dstStride[0] * srcBpp == srcStride[0] * dstBpp && srcStride[0] > 0 &&
            !(srcStride[0] % srcBpp) && !dst_bswap && !src_bswap)
            conv(srcPtr, dstPtr + dstStride[0] * srcSliceY,
                 srcSliceH * srcStride[0]);
        else {
            int i, j;
            dstPtr += dstStride[0] * srcSliceY;

            for (i = 0; i < srcSliceH; i++) {
                if(src_bswap) {
                    for(j=0; j<c->srcW; j++)
                        ((uint16_t*)c->formatConvBuffer)[j] = av_bswap16(((uint16_t*)srcPtr)[j]);
                    conv(c->formatConvBuffer, dstPtr, c->srcW * srcBpp);
                }else
                    conv(srcPtr, dstPtr, c->srcW * srcBpp);
                if(dst_bswap)
                    for(j=0; j<c->srcW; j++)
                        ((uint16_t*)dstPtr)[j] = av_bswap16(((uint16_t*)dstPtr)[j]);
                srcPtr += srcStride[0];
                dstPtr += dstStride[0];
            }
        }
    }
    return srcSliceH;
}
Esempio n. 2
0
int ff_dca_convert_bitstream(const uint8_t *src, int src_size, uint8_t *dst,
                             int max_size)
{
    uint32_t mrk;
    int i, tmp;
    const uint16_t *ssrc = (const uint16_t *) src;
    uint16_t *sdst = (uint16_t *) dst;
    PutBitContext pb;

    if ((unsigned) src_size > (unsigned) max_size)
        src_size = max_size;

    mrk = AV_RB32(src);
    switch (mrk) {
    case DCA_MARKER_RAW_BE:
        memcpy(dst, src, src_size);
        return src_size;
    case DCA_MARKER_RAW_LE:
        for (i = 0; i < (src_size + 1) >> 1; i++)
            *sdst++ = av_bswap16(*ssrc++);
        return src_size;
    case DCA_MARKER_14B_BE:
    case DCA_MARKER_14B_LE:
        init_put_bits(&pb, dst, max_size);
        for (i = 0; i < (src_size + 1) >> 1; i++, src += 2) {
            tmp = ((mrk == DCA_MARKER_14B_BE) ? AV_RB16(src) : AV_RL16(src)) & 0x3FFF;
            put_bits(&pb, 14, tmp);
        }
        flush_put_bits(&pb);
        return (put_bits_count(&pb) + 7) >> 3;
    default:
        return AVERROR_INVALIDDATA;
    }
}
Esempio n. 3
0
// Copy of ff_spdif_bswap_buf16, which sadly is a private symbol
void lav_spdif_bswap_buf16(uint16_t *dst, const uint16_t *src, int w)
{
  int i;

  for (i = 0; i + 8 <= w; i += 8) {
    dst[i + 0] = av_bswap16(src[i + 0]);
    dst[i + 1] = av_bswap16(src[i + 1]);
    dst[i + 2] = av_bswap16(src[i + 2]);
    dst[i + 3] = av_bswap16(src[i + 3]);
    dst[i + 4] = av_bswap16(src[i + 4]);
    dst[i + 5] = av_bswap16(src[i + 5]);
    dst[i + 6] = av_bswap16(src[i + 6]);
    dst[i + 7] = av_bswap16(src[i + 7]);
  }
  for (; i < w; i++)
    dst[i + 0] = av_bswap16(src[i + 0]);
}
Esempio n. 4
0
static int packed_16bpc_bswap(SwsContext *c, const uint8_t *src[],
                              int srcStride[], int srcSliceY, int srcSliceH,
                              uint8_t *dst[], int dstStride[])
{
    int i, j;
    int srcstr = srcStride[0] >> 1;
    int dststr = dstStride[0] >> 1;
    uint16_t       *dstPtr =       (uint16_t *) dst[0];
    const uint16_t *srcPtr = (const uint16_t *) src[0];
    int min_stride         = FFMIN(srcstr, dststr);

    for (i = 0; i < srcSliceH; i++) {
        for (j = 0; j < min_stride; j++) {
            dstPtr[j] = av_bswap16(srcPtr[j]);
        }
        srcPtr += srcstr;
        dstPtr += dststr;
    }

    return srcSliceH;
}
Esempio n. 5
0
/**
 * Decode Smacker audio data
 */
static int smka_decode_frame(AVCodecContext *avctx, void *data,
                             int *got_frame_ptr, AVPacket *avpkt)
{
    AVFrame *frame     = data;
    const uint8_t *buf = avpkt->data;
    int buf_size = avpkt->size;
    GetBitContext gb;
    HuffContext h[4] = { { 0 } };
    VLC vlc[4]       = { { 0 } };
    int16_t *samples;
    uint8_t *samples8;
    int val;
    int i, res, ret;
    int unp_size;
    int bits, stereo;
    int pred[2] = {0, 0};

    if (buf_size <= 4) {
        av_log(avctx, AV_LOG_ERROR, "packet is too small\n");
        return AVERROR(EINVAL);
    }

    unp_size = AV_RL32(buf);

    if (unp_size > (1U<<24)) {
        av_log(avctx, AV_LOG_ERROR, "packet is too big\n");
        return AVERROR_INVALIDDATA;
    }

    if ((ret = init_get_bits8(&gb, buf + 4, buf_size - 4)) < 0)
        return ret;

    if(!get_bits1(&gb)){
        av_log(avctx, AV_LOG_INFO, "Sound: no data\n");
        *got_frame_ptr = 0;
        return 1;
    }
    stereo = get_bits1(&gb);
    bits = get_bits1(&gb);
    if (stereo ^ (avctx->channels != 1)) {
        av_log(avctx, AV_LOG_ERROR, "channels mismatch\n");
        return AVERROR(EINVAL);
    }
    if (bits == (avctx->sample_fmt == AV_SAMPLE_FMT_U8)) {
        av_log(avctx, AV_LOG_ERROR, "sample format mismatch\n");
        return AVERROR(EINVAL);
    }

    /* get output buffer */
    frame->nb_samples = unp_size / (avctx->channels * (bits + 1));
    if (unp_size % (avctx->channels * (bits + 1))) {
        av_log(avctx, AV_LOG_ERROR, "unp_size %d is odd\n", unp_size);
        return AVERROR(EINVAL);
    }
    if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
        return ret;
    samples  = (int16_t *)frame->data[0];
    samples8 =            frame->data[0];

    // Initialize
    for(i = 0; i < (1 << (bits + stereo)); i++) {
        h[i].length = 256;
        h[i].maxlength = 0;
        h[i].current = 0;
        h[i].bits = av_mallocz(256 * 4);
        h[i].lengths = av_mallocz(256 * sizeof(int));
        h[i].values = av_mallocz(256 * sizeof(int));
        if (!h[i].bits || !h[i].lengths || !h[i].values) {
            ret = AVERROR(ENOMEM);
            goto error;
        }
        skip_bits1(&gb);
        if (smacker_decode_tree(&gb, &h[i], 0, 0) < 0) {
            ret = AVERROR_INVALIDDATA;
            goto error;
        }
        skip_bits1(&gb);
        if(h[i].current > 1) {
            res = init_vlc(&vlc[i], SMKTREE_BITS, h[i].length,
                    h[i].lengths, sizeof(int), sizeof(int),
                    h[i].bits, sizeof(uint32_t), sizeof(uint32_t), INIT_VLC_LE);
            if(res < 0) {
                av_log(avctx, AV_LOG_ERROR, "Cannot build VLC table\n");
                ret = AVERROR_INVALIDDATA;
                goto error;
            }
        }
    }
    /* this codec relies on wraparound instead of clipping audio */
    if(bits) { //decode 16-bit data
        for(i = stereo; i >= 0; i--)
            pred[i] = sign_extend(av_bswap16(get_bits(&gb, 16)), 16);
        for(i = 0; i <= stereo; i++)
            *samples++ = pred[i];
        for(; i < unp_size / 2; i++) {
            if(get_bits_left(&gb)<0)
                return AVERROR_INVALIDDATA;
            if(i & stereo) {
                if(vlc[2].table)
                    res = get_vlc2(&gb, vlc[2].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                if (res < 0) {
                    av_log(avctx, AV_LOG_ERROR, "invalid vlc\n");
                    return AVERROR_INVALIDDATA;
                }
                val  = h[2].values[res];
                if(vlc[3].table)
                    res = get_vlc2(&gb, vlc[3].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                if (res < 0) {
                    av_log(avctx, AV_LOG_ERROR, "invalid vlc\n");
                    return AVERROR_INVALIDDATA;
                }
                val |= h[3].values[res] << 8;
                pred[1] += sign_extend(val, 16);
                *samples++ = pred[1];
            } else {
                if(vlc[0].table)
                    res = get_vlc2(&gb, vlc[0].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                if (res < 0) {
                    av_log(avctx, AV_LOG_ERROR, "invalid vlc\n");
                    return AVERROR_INVALIDDATA;
                }
                val  = h[0].values[res];
                if(vlc[1].table)
                    res = get_vlc2(&gb, vlc[1].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                if (res < 0) {
                    av_log(avctx, AV_LOG_ERROR, "invalid vlc\n");
                    return AVERROR_INVALIDDATA;
                }
                val |= h[1].values[res] << 8;
                pred[0] += sign_extend(val, 16);
                *samples++ = pred[0];
            }
        }
    } else { //8-bit data
        for(i = stereo; i >= 0; i--)
            pred[i] = get_bits(&gb, 8);
        for(i = 0; i <= stereo; i++)
            *samples8++ = pred[i];
        for(; i < unp_size; i++) {
            if(get_bits_left(&gb)<0)
                return AVERROR_INVALIDDATA;
            if(i & stereo){
                if(vlc[1].table)
                    res = get_vlc2(&gb, vlc[1].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                if (res < 0) {
                    av_log(avctx, AV_LOG_ERROR, "invalid vlc\n");
                    return AVERROR_INVALIDDATA;
                }
                pred[1] += sign_extend(h[1].values[res], 8);
                *samples8++ = pred[1];
            } else {
                if(vlc[0].table)
                    res = get_vlc2(&gb, vlc[0].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                if (res < 0) {
                    av_log(avctx, AV_LOG_ERROR, "invalid vlc\n");
                    return AVERROR_INVALIDDATA;
                }
                pred[0] += sign_extend(h[0].values[res], 8);
                *samples8++ = pred[0];
            }
        }
    }

    *got_frame_ptr = 1;
    ret = buf_size;

error:
    for(i = 0; i < 4; i++) {
        if(vlc[i].table)
            ff_free_vlc(&vlc[i]);
        av_free(h[i].bits);
        av_free(h[i].lengths);
        av_free(h[i].values);
    }

    return ret;
}
Esempio n. 6
0
File: parser.c Progetto: jeeb/random
int main()
{
    int derp;
    FILE *file = NULL;
    char str[33];
    char str2[33];
    uint64_t fsize;
    uint8_t left;
    uint32_t frames;
    
    file = fopen("sola OP1.dvi", "rb");
    
    fseek(file, 0L, SEEK_END);
    fsize = ftell(file);
    fseek(file, 0L, SEEK_SET);
    left = fsize % 16;
    frames = fsize / 16;
    
    snprintf(str, sizeof str, "%" PRIu64, fsize);
    printf( "File size: %s\n", str );
    snprintf(str, sizeof str, "%" PRIu8, left);
    printf( "Left: %s\n", str );
    snprintf(str, sizeof str, "%" PRIu32, frames);
    printf( "Amount of frames: %s\n\n", str );

    frame_index index[frames];
    
    for( uint32_t i = 0; i < frames; i++ )
    {
        derp = fread( &index[i].offset, sizeof(uint32_t), 1, file );
        if( derp != 1 )
        {
            printf( "Derped\n" );
            return 1;
        }

        index[i].offset = av_bswap32(index[i].offset);
        index[i].offset *= 4096;
        
        derp = fread( &index[i].size, sizeof(uint16_t), 1, file );
        if( derp != 1 )
        {
            printf( "Derped\n" );
            return 1;
        }
        
        index[i].size = av_bswap16(index[i].size);
        index[i].size *= 4096;
        
        derp = fread( &index[i].frames_until_earlier, sizeof(uint16_t)+sizeof(uint32_t), 1, file );
        if( derp != 1 )
        {
            printf( "Derped\n" );
            return 1;
        }
        
        index[i].frames_until_earlier = av_bswap64(index[i].frames_until_earlier);
        
        derp = fread( &index[i].aframe_count, sizeof(uint16_t), 1, file );
        if( derp != 1 )
        {
            printf( "Derped\n" );
            return 1;
        }
        
        index[i].aframe_count = av_bswap16(index[i].aframe_count);
        
        derp = fread( &index[i].quality, sizeof(uint8_t), 1, file );
        if( derp != 1 )
        {
            printf( "Derped\n" );
            return 1;
        }
        
        derp = fread( &index[i].reserved, sizeof(uint8_t), 1, file );
        if( derp != 1 )
        {
            printf( "Derped\n" );
            return 1;
        }
        
        // snprintf(str2, sizeof str2, "%" PRIu32, i);
        
        // snprintf(str, sizeof str, "%" PRIu64, index[i].offset);
        // printf( "[frame %s] : Offset %s\n", str2, str );
        // snprintf(str, sizeof str, "%" PRIu16, index[i].size);
        // printf( "[frame %s] : Size: %s\n", str2, str );
        // snprintf(str, sizeof str, "%" PRIu64, index[i].frames_until_earlier);
        // printf( "[frame %s] : FuE: %s\n", str2, str );
        // snprintf(str, sizeof str, "%" PRIu16, index[i].aframe_count);
        // printf( "[frame %s] : Amount of AFrames: %s\n", str2, str );
        // snprintf(str, sizeof str, "%" PRIu8, index[i].quality);
        // printf( "[frame %s] : Quality: %s\n", str2, str );
    }

    fclose(file);
    
    return 0;
}
Esempio n. 7
0
File: smacker.c Progetto: ares89/vlc
/**
 * Decode Smacker audio data
 */
static int smka_decode_frame(AVCodecContext *avctx, void *data,
                             int *got_frame_ptr, AVPacket *avpkt)
{
    SmackerAudioContext *s = avctx->priv_data;
    const uint8_t *buf = avpkt->data;
    int buf_size = avpkt->size;
    GetBitContext gb;
    HuffContext h[4] = { { 0 } };
    VLC vlc[4]       = { { 0 } };
    int16_t *samples;
    uint8_t *samples8;
    int val;
    int i, res, ret;
    int unp_size;
    int bits, stereo;
    int pred[2] = {0, 0};

    if (buf_size <= 4) {
        av_log(avctx, AV_LOG_ERROR, "packet is too small\n");
        return AVERROR(EINVAL);
    }

    unp_size = AV_RL32(buf);

    init_get_bits(&gb, buf + 4, (buf_size - 4) * 8);

    if(!get_bits1(&gb)){
        av_log(avctx, AV_LOG_INFO, "Sound: no data\n");
        *got_frame_ptr = 0;
        return 1;
    }
    stereo = get_bits1(&gb);
    bits = get_bits1(&gb);
    if (stereo ^ (avctx->channels != 1)) {
        av_log(avctx, AV_LOG_ERROR, "channels mismatch\n");
        return AVERROR(EINVAL);
    }
    if (bits && avctx->sample_fmt == AV_SAMPLE_FMT_U8) {
        av_log(avctx, AV_LOG_ERROR, "sample format mismatch\n");
        return AVERROR(EINVAL);
    }

    /* get output buffer */
    s->frame.nb_samples = unp_size / (avctx->channels * (bits + 1));
    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
        return ret;
    }
    samples  = (int16_t *)s->frame.data[0];
    samples8 =            s->frame.data[0];

    // Initialize
    for(i = 0; i < (1 << (bits + stereo)); i++) {
        h[i].length = 256;
        h[i].maxlength = 0;
        h[i].current = 0;
        h[i].bits = av_mallocz(256 * 4);
        h[i].lengths = av_mallocz(256 * sizeof(int));
        h[i].values = av_mallocz(256 * sizeof(int));
        skip_bits1(&gb);
        smacker_decode_tree(&gb, &h[i], 0, 0);
        skip_bits1(&gb);
        if(h[i].current > 1) {
            res = init_vlc(&vlc[i], SMKTREE_BITS, h[i].length,
                    h[i].lengths, sizeof(int), sizeof(int),
                    h[i].bits, sizeof(uint32_t), sizeof(uint32_t), INIT_VLC_LE);
            if(res < 0) {
                av_log(avctx, AV_LOG_ERROR, "Cannot build VLC table\n");
                return -1;
            }
        }
    }
    if(bits) { //decode 16-bit data
        for(i = stereo; i >= 0; i--)
            pred[i] = sign_extend(av_bswap16(get_bits(&gb, 16)), 16);
        for(i = 0; i <= stereo; i++)
            *samples++ = pred[i];
        for(; i < unp_size / 2; i++) {
            if(i & stereo) {
                if(vlc[2].table)
                    res = get_vlc2(&gb, vlc[2].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                val  = h[2].values[res];
                if(vlc[3].table)
                    res = get_vlc2(&gb, vlc[3].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                val |= h[3].values[res] << 8;
                pred[1] += sign_extend(val, 16);
                *samples++ = av_clip_int16(pred[1]);
            } else {
                if(vlc[0].table)
                    res = get_vlc2(&gb, vlc[0].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                val  = h[0].values[res];
                if(vlc[1].table)
                    res = get_vlc2(&gb, vlc[1].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                val |= h[1].values[res] << 8;
                pred[0] += sign_extend(val, 16);
                *samples++ = av_clip_int16(pred[0]);
            }
        }
    } else { //8-bit data
        for(i = stereo; i >= 0; i--)
            pred[i] = get_bits(&gb, 8);
        for(i = 0; i <= stereo; i++)
            *samples8++ = pred[i];
        for(; i < unp_size; i++) {
            if(i & stereo){
                if(vlc[1].table)
                    res = get_vlc2(&gb, vlc[1].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                pred[1] += sign_extend(h[1].values[res], 8);
                *samples8++ = av_clip_uint8(pred[1]);
            } else {
                if(vlc[0].table)
                    res = get_vlc2(&gb, vlc[0].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                pred[0] += sign_extend(h[0].values[res], 8);
                *samples8++ = av_clip_uint8(pred[0]);
            }
        }
    }

    for(i = 0; i < 4; i++) {
        if(vlc[i].table)
            ff_free_vlc(&vlc[i]);
        av_free(h[i].bits);
        av_free(h[i].lengths);
        av_free(h[i].values);
    }

    *got_frame_ptr   = 1;
    *(AVFrame *)data = s->frame;

    return buf_size;
}
Esempio n. 8
0
File: eamad.c Progetto: Arcen/libav
static void bswap16_buf(uint16_t *dst, const uint16_t *src, int count)
{
    int i;
    for (i=0; i<count; i++)
        dst[i] = av_bswap16(src[i]);
}
Esempio n. 9
0
/**
 * Decode Smacker audio data
 */
static int smka_decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
{
    const uint8_t *buf = avpkt->data;
    int buf_size = avpkt->size;
    GetBitContext gb;
    HuffContext h[4];
    VLC vlc[4];
    int16_t *samples = data;
    int8_t *samples8 = data;
    int val;
    int i, res;
    int unp_size;
    int bits, stereo;
    int pred[2] = {0, 0};

    unp_size = AV_RL32(buf);

    init_get_bits(&gb, buf + 4, (buf_size - 4) * 8);

    if(!get_bits1(&gb)){
        av_log(avctx, AV_LOG_INFO, "Sound: no data\n");
        *data_size = 0;
        return 1;
    }
    stereo = get_bits1(&gb);
    bits = get_bits1(&gb);
    if (unp_size & 0xC0000000 || unp_size > *data_size) {
        av_log(avctx, AV_LOG_ERROR, "Frame is too large to fit in buffer\n");
        return -1;
    }

    memset(vlc, 0, sizeof(VLC) * 4);
    memset(h, 0, sizeof(HuffContext) * 4);
    // Initialize
    for(i = 0; i < (1 << (bits + stereo)); i++) {
        h[i].length = 256;
        h[i].maxlength = 0;
        h[i].current = 0;
        h[i].bits = av_mallocz(256 * 4);
        h[i].lengths = av_mallocz(256 * sizeof(int));
        h[i].values = av_mallocz(256 * sizeof(int));
        skip_bits1(&gb);
        smacker_decode_tree(&gb, &h[i], 0, 0);
        skip_bits1(&gb);
        if(h[i].current > 1) {
            res = init_vlc(&vlc[i], SMKTREE_BITS, h[i].length,
                    h[i].lengths, sizeof(int), sizeof(int),
                    h[i].bits, sizeof(uint32_t), sizeof(uint32_t), INIT_VLC_LE);
            if(res < 0) {
                av_log(avctx, AV_LOG_ERROR, "Cannot build VLC table\n");
                return -1;
            }
        }
    }
    if(bits) { //decode 16-bit data
        for(i = stereo; i >= 0; i--)
            pred[i] = av_bswap16(get_bits(&gb, 16));
        for(i = 0; i <= stereo; i++)
            *samples++ = pred[i];
        for(; i < unp_size / 2; i++) {
            if(i & stereo) {
                if(vlc[2].table)
                    res = get_vlc2(&gb, vlc[2].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                val  = h[2].values[res];
                if(vlc[3].table)
                    res = get_vlc2(&gb, vlc[3].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                val |= h[3].values[res] << 8;
                pred[1] += (int16_t)val;
                *samples++ = pred[1];
            } else {
                if(vlc[0].table)
                    res = get_vlc2(&gb, vlc[0].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                val  = h[0].values[res];
                if(vlc[1].table)
                    res = get_vlc2(&gb, vlc[1].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                val |= h[1].values[res] << 8;
                pred[0] += val;
                *samples++ = pred[0];
            }
        }
    } else { //8-bit data
        for(i = stereo; i >= 0; i--)
            pred[i] = get_bits(&gb, 8);
        for(i = 0; i <= stereo; i++)
            *samples8++ = pred[i];
        for(; i < unp_size; i++) {
            if(i & stereo){
                if(vlc[1].table)
                    res = get_vlc2(&gb, vlc[1].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                pred[1] += (int8_t)h[1].values[res];
                *samples8++ = pred[1];
            } else {
                if(vlc[0].table)
                    res = get_vlc2(&gb, vlc[0].table, SMKTREE_BITS, 3);
                else
                    res = 0;
                pred[0] += (int8_t)h[0].values[res];
                *samples8++ = pred[0];
            }
        }
    }

    for(i = 0; i < 4; i++) {
        if(vlc[i].table)
            free_vlc(&vlc[i]);
        av_free(h[i].bits);
        av_free(h[i].lengths);
        av_free(h[i].values);
    }

    *data_size = unp_size;
    return buf_size;
}
Esempio n. 10
0
static void swap_16(uint16_t *ptr, size_t size)
{
    for (size_t n = 0; n < size; n++)
        ptr[n] = av_bswap16(ptr[n]);
}
Esempio n. 11
0
static void bswap16_buf(uint16_t *dst, const uint16_t *src, int len)
{
    while (len--)
        *dst++ = av_bswap16(*src++);
}