static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,

                            AVPacket *avpkt) {

    GetByteContext gb;

    AVFrame * const p = data;

    unsigned int version, w, h, d3d_format, depth, stride, flags;

    unsigned int y, v;

    uint8_t *ptr;

    uint32_t *pal;

    int ret;



    bytestream2_init(&gb, avpkt->data, avpkt->size);

    version         = bytestream2_get_le32(&gb);

    bytestream2_skip(&gb, 72);

    d3d_format      = bytestream2_get_le32(&gb);

    w               = bytestream2_get_le16(&gb);

    h               = bytestream2_get_le16(&gb);

    depth           = bytestream2_get_byte(&gb);

    bytestream2_skip(&gb, 2);

    flags           = bytestream2_get_byte(&gb);



    if (version < 8 || version > 9) {

        av_log(avctx, AV_LOG_ERROR, "texture data version %i is unsupported\n",

                                                                    version);

        return AVERROR_PATCHWELCOME;

    }



    if (depth == 8) {

        avctx->pix_fmt = AV_PIX_FMT_PAL8;

    } else if (depth == 16 || depth == 32) {

        avctx->pix_fmt = AV_PIX_FMT_RGB32;

    } else {

        av_log(avctx, AV_LOG_ERROR, "depth of %i is unsupported\n", depth);

        return AVERROR_PATCHWELCOME;

    }



    if ((ret = ff_set_dimensions(avctx, w, h)) < 0)

        return ret;



    if ((ret = ff_get_buffer(avctx, p, 0)) < 0)

        return ret;



    p->pict_type = AV_PICTURE_TYPE_I;



    ptr    = p->data[0];

    stride = p->linesize[0];



    if (depth == 8) {

        pal = (uint32_t *) p->data[1];

        for (y = 0; y < 256; y++) {

            v = bytestream2_get_be32(&gb);

            pal[y] = (v >> 8) + (v << 24);

        }

        if (bytestream2_get_bytes_left(&gb) < w * h)

            return AVERROR_INVALIDDATA;

        bytestream2_skip(&gb, 4);

        for (y=0; y<h; y++) {

            bytestream2_get_buffer(&gb, ptr, w);

            ptr += stride;

        }

    } else if (depth == 16) {

        bytestream2_skip(&gb, 4);

        switch (d3d_format) {

        case 0:

            if (!(flags & 1))

                goto unsupported;

        case FF_S3TC_DXT1:

            if (bytestream2_get_bytes_left(&gb) < (w/4) * (h/4) * 8)

                return AVERROR_INVALIDDATA;

            ff_decode_dxt1(&gb, ptr, w, h, stride);

            break;

        case FF_S3TC_DXT3:

            if (bytestream2_get_bytes_left(&gb) < (w/4) * (h/4) * 16)

                return AVERROR_INVALIDDATA;

            ff_decode_dxt3(&gb, ptr, w, h, stride);

            break;

        default:

            goto unsupported;

        }

    } else if (depth == 32) {

        switch (d3d_format) {

        case 0x15:

        case 0x16:

            if (bytestream2_get_bytes_left(&gb) < h * w * 4)

                return AVERROR_INVALIDDATA;

            for (y=0; y<h; y++) {

                bytestream2_get_buffer(&gb, ptr, w * 4);

                ptr += stride;

            }

            break;

        default:

            goto unsupported;

        }

    }



    *got_frame = 1;



    return avpkt->size;



unsupported:

    av_log(avctx, AV_LOG_ERROR, "unsupported d3d format (%08x)\n", d3d_format);

    return AVERROR_PATCHWELCOME;

}

static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,

                            AVPacket *avpkt) {

    GetByteContext gb;

    AVFrame * const p = data;

    unsigned int version, w, h, d3d_format, depth, stride, flags;

    unsigned int y, v;

    uint8_t *ptr;

    uint32_t *pal;

    int ret;



    bytestream2_init(&gb, avpkt->data, avpkt->size);

    version         = bytestream2_get_le32(&gb);

    bytestream2_skip(&gb, 72);

    d3d_format      = bytestream2_get_le32(&gb);

    w               = bytestream2_get_le16(&gb);

    h               = bytestream2_get_le16(&gb);

    depth           = bytestream2_get_byte(&gb);

    bytestream2_skip(&gb, 2);

    flags           = bytestream2_get_byte(&gb);



    if (version < 8 || version > 9) {

        av_log(avctx, AV_LOG_ERROR, "texture data version %i is unsupported\n",

                                                                    version);

        return AVERROR_PATCHWELCOME;

    }



    if (depth == 8) {

        avctx->pix_fmt = AV_PIX_FMT_PAL8;

    } else if (depth == 16 || depth == 32) {

        avctx->pix_fmt = AV_PIX_FMT_RGB32;

    } else {

        av_log(avctx, AV_LOG_ERROR, "depth of %i is unsupported\n", depth);

        return AVERROR_PATCHWELCOME;

    }



    if ((ret = ff_set_dimensions(avctx, w, h)) < 0)

        return ret;



    if ((ret = ff_get_buffer(avctx, p, 0)) < 0)

        return ret;



    p->pict_type = AV_PICTURE_TYPE_I;



    ptr    = p->data[0];

    stride = p->linesize[0];



    if (depth == 8) {

        pal = (uint32_t *) p->data[1];

        for (y = 0; y < 256; y++) {

            v = bytestream2_get_be32(&gb);

            pal[y] = (v >> 8) + (v << 24);

        }

        if (bytestream2_get_bytes_left(&gb) < w * h)

            return AVERROR_INVALIDDATA;

        bytestream2_skip(&gb, 4);

        for (y=0; y<h; y++) {

            bytestream2_get_buffer(&gb, ptr, w);

            ptr += stride;

        }

    } else if (depth == 16) {

        bytestream2_skip(&gb, 4);

        switch (d3d_format) {

        case 0:

            if (!(flags & 1))

                goto unsupported;

        case FF_S3TC_DXT1:

            if (bytestream2_get_bytes_left(&gb) < (w/4) * (h/4) * 8)

                return AVERROR_INVALIDDATA;

            ff_decode_dxt1(&gb, ptr, w, h, stride);

            break;

        case FF_S3TC_DXT3:

            if (bytestream2_get_bytes_left(&gb) < (w/4) * (h/4) * 16)

                return AVERROR_INVALIDDATA;

            ff_decode_dxt3(&gb, ptr, w, h, stride);

            break;

        default:

            goto unsupported;

        }

    } else if (depth == 32) {

        switch (d3d_format) {

        case 0x15:

        case 0x16:

            if (bytestream2_get_bytes_left(&gb) < h * w * 4)

                return AVERROR_INVALIDDATA;

            for (y=0; y<h; y++) {

                bytestream2_get_buffer(&gb, ptr, w * 4);

                ptr += stride;

            }

            break;

        default:

            goto unsupported;

        }

    }



    *got_frame = 1;



    return avpkt->size;



unsupported:

    av_log(avctx, AV_LOG_ERROR, "unsupported d3d format (%08x)\n", d3d_format);

    return AVERROR_PATCHWELCOME;

}

static int FUNC_0(AVCodecContext *VAR_0, void *VAR_1, int *VAR_2,

                            AVPacket *VAR_3) {

    GetByteContext gb;

    AVFrame * const p = VAR_1;

    unsigned int VAR_4, VAR_5, VAR_6, VAR_7, VAR_8, VAR_9, VAR_10;

    unsigned int VAR_11, VAR_12;

    uint8_t *ptr;

    uint32_t *pal;

    int VAR_13;



    bytestream2_init(&gb, VAR_3->VAR_1, VAR_3->size);

    VAR_4         = bytestream2_get_le32(&gb);

    bytestream2_skip(&gb, 72);

    VAR_7      = bytestream2_get_le32(&gb);

    VAR_5               = bytestream2_get_le16(&gb);

    VAR_6               = bytestream2_get_le16(&gb);

    VAR_8           = bytestream2_get_byte(&gb);

    bytestream2_skip(&gb, 2);

    VAR_10           = bytestream2_get_byte(&gb);



    if (VAR_4 < 8 || VAR_4 > 9) {

        av_log(VAR_0, AV_LOG_ERROR, "texture VAR_1 VAR_4 %i is unsupported\n",

                                                                    VAR_4);

        return AVERROR_PATCHWELCOME;

    }



    if (VAR_8 == 8) {

        VAR_0->pix_fmt = AV_PIX_FMT_PAL8;

    } else if (VAR_8 == 16 || VAR_8 == 32) {

        VAR_0->pix_fmt = AV_PIX_FMT_RGB32;

    } else {

        av_log(VAR_0, AV_LOG_ERROR, "VAR_8 of %i is unsupported\n", VAR_8);

        return AVERROR_PATCHWELCOME;

    }



    if ((VAR_13 = ff_set_dimensions(VAR_0, VAR_5, VAR_6)) < 0)

        return VAR_13;



    if ((VAR_13 = ff_get_buffer(VAR_0, p, 0)) < 0)

        return VAR_13;



    p->pict_type = AV_PICTURE_TYPE_I;



    ptr    = p->VAR_1[0];

    VAR_9 = p->linesize[0];



    if (VAR_8 == 8) {

        pal = (uint32_t *) p->VAR_1[1];

        for (VAR_11 = 0; VAR_11 < 256; VAR_11++) {

            VAR_12 = bytestream2_get_be32(&gb);

            pal[VAR_11] = (VAR_12 >> 8) + (VAR_12 << 24);

        }

        if (bytestream2_get_bytes_left(&gb) < VAR_5 * VAR_6)

            return AVERROR_INVALIDDATA;

        bytestream2_skip(&gb, 4);

        for (VAR_11=0; VAR_11<VAR_6; VAR_11++) {

            bytestream2_get_buffer(&gb, ptr, VAR_5);

            ptr += VAR_9;

        }

    } else if (VAR_8 == 16) {

        bytestream2_skip(&gb, 4);

        switch (VAR_7) {

        case 0:

            if (!(VAR_10 & 1))

                goto unsupported;

        case FF_S3TC_DXT1:

            if (bytestream2_get_bytes_left(&gb) < (VAR_5/4) * (VAR_6/4) * 8)

                return AVERROR_INVALIDDATA;

            ff_decode_dxt1(&gb, ptr, VAR_5, VAR_6, VAR_9);

            break;

        case FF_S3TC_DXT3:

            if (bytestream2_get_bytes_left(&gb) < (VAR_5/4) * (VAR_6/4) * 16)

                return AVERROR_INVALIDDATA;

            ff_decode_dxt3(&gb, ptr, VAR_5, VAR_6, VAR_9);

            break;

        default:

            goto unsupported;

        }

    } else if (VAR_8 == 32) {

        switch (VAR_7) {

        case 0x15:

        case 0x16:

            if (bytestream2_get_bytes_left(&gb) < VAR_6 * VAR_5 * 4)

                return AVERROR_INVALIDDATA;

            for (VAR_11=0; VAR_11<VAR_6; VAR_11++) {

                bytestream2_get_buffer(&gb, ptr, VAR_5 * 4);

                ptr += VAR_9;

            }

            break;

        default:

            goto unsupported;

        }

    }



    *VAR_2 = 1;



    return VAR_3->size;



unsupported:

    av_log(VAR_0, AV_LOG_ERROR, "unsupported d3d format (%08x)\n", VAR_7);

    return AVERROR_PATCHWELCOME;

}

static int FUNC_0(AVCodecContext *VAR_0, void *VAR_1, int *VAR_2,
AVPacket *VAR_3) { GetByteContext gb; AVFrame * const p = VAR_1; unsigned int VAR_4, VAR_5, VAR_6, VAR_7, VAR_8, VAR_9, VAR_10; unsigned int VAR_11, VAR_12; uint8_t *ptr; uint32_t *pal; int VAR_13; bytestream2_init(&gb, VAR_3->VAR_1, VAR_3->size); VAR_4         = bytestream2_get_le32(&gb); bytestream2_skip(&gb, 72); VAR_7      = bytestream2_get_le32(&gb); VAR_5               = bytestream2_get_le16(&gb); VAR_6               = bytestream2_get_le16(&gb); VAR_8           = bytestream2_get_byte(&gb); bytestream2_skip(&gb, 2); VAR_10           = bytestream2_get_byte(&gb); if (VAR_4 < 8 || VAR_4 > 9) { av_log(VAR_0, AV_LOG_ERROR, "texture VAR_1 VAR_4 %i is unsupported\n",
VAR_4); return AVERROR_PATCHWELCOME; } if (VAR_8 == 8) { VAR_0->pix_fmt = AV_PIX_FMT_PAL8; } else if (VAR_8 == 16 || VAR_8 == 32) { VAR_0->pix_fmt = AV_PIX_FMT_RGB32; } else { av_log(VAR_0, AV_LOG_ERROR, "VAR_8 of %i is unsupported\n", VAR_8); return AVERROR_PATCHWELCOME; } if ((VAR_13 = ff_set_dimensions(VAR_0, VAR_5, VAR_6)) < 0)
return VAR_13; if ((VAR_13 = ff_get_buffer(VAR_0, p, 0)) < 0)
return VAR_13; p->pict_type = AV_PICTURE_TYPE_I; ptr    = p->VAR_1[0]; VAR_9 = p->linesize[0]; if (VAR_8 == 8) { pal = (uint32_t *) p->VAR_1[1]; for (VAR_11 = 0; VAR_11 < 256; VAR_11++) { VAR_12 = bytestream2_get_be32(&gb); pal[VAR_11] = (VAR_12 >> 8) + (VAR_12 << 24); } if (bytestream2_get_bytes_left(&gb) < VAR_5 * VAR_6)
return AVERROR_INVALIDDATA; bytestream2_skip(&gb, 4); for (VAR_11=0; VAR_11<VAR_6; VAR_11++) { bytestream2_get_buffer(&gb, ptr, VAR_5); ptr += VAR_9; } } else if (VAR_8 == 16) { bytestream2_skip(&gb, 4); switch (VAR_7) { case 0:
if (!(VAR_10 & 1))
goto unsupported; case FF_S3TC_DXT1:
if (bytestream2_get_bytes_left(&gb) < (VAR_5/4) * (VAR_6/4) * 8)
return AVERROR_INVALIDDATA; ff_decode_dxt1(&gb, ptr, VAR_5, VAR_6, VAR_9); break; case FF_S3TC_DXT3:
if (bytestream2_get_bytes_left(&gb) < (VAR_5/4) * (VAR_6/4) * 16)
return AVERROR_INVALIDDATA; ff_decode_dxt3(&gb, ptr, VAR_5, VAR_6, VAR_9); break; default:
goto unsupported; } } else if (VAR_8 == 32) { switch (VAR_7) { case 0x15:
case 0x16:
if (bytestream2_get_bytes_left(&gb) < VAR_6 * VAR_5 * 4)
return AVERROR_INVALIDDATA; for (VAR_11=0; VAR_11<VAR_6; VAR_11++) { bytestream2_get_buffer(&gb, ptr, VAR_5 * 4); ptr += VAR_9; } break; default:
goto unsupported; } } *VAR_2 = 1; return VAR_3->size; unsupported:
av_log(VAR_0, AV_LOG_ERROR, "unsupported d3d format (%08x)\n", VAR_7); return AVERROR_PATCHWELCOME; }