making act segmenter

1 files changed, 0 insertions, 1027 deletions

diff --git a/ffmpeg1/libavcodec/interplayvideo.c b/ffmpeg1/libavcodec/interplayvideo.c
deleted file mode 100644
index 4f710b8..0000000
--- a/ffmpeg1/libavcodec/interplayvideo.c
+++ /dev/null
@@ -1,1027 +0,0 @@
-/*
- * Interplay MVE Video Decoder
- * Copyright (C) 2003 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
- */
-
-/**
- * @file
- * Interplay MVE Video Decoder by Mike Melanson (melanson@pcisys.net)
- * For more information about the Interplay MVE format, visit:
- *   http://www.pcisys.net/~melanson/codecs/interplay-mve.txt
- * This code is written in such a way that the identifiers match up
- * with the encoding descriptions in the document.
- *
- * This decoder presently only supports a PAL8 output colorspace.
- *
- * An Interplay video frame consists of 2 parts: The decoding map and
- * the video data. A demuxer must load these 2 parts together in a single
- * buffer before sending it through the stream to this decoder.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "avcodec.h"
-#include "bytestream.h"
-#include "hpeldsp.h"
-#define BITSTREAM_READER_LE
-#include "get_bits.h"
-#include "internal.h"
-
-#define PALETTE_COUNT 256
-
-typedef struct IpvideoContext {
-
-    AVCodecContext *avctx;
-    HpelDSPContext hdsp;
-    AVFrame *second_last_frame;
-    AVFrame *last_frame;
-    const unsigned char *decoding_map;
-    int decoding_map_size;
-
-    int is_16bpp;
-    GetByteContext stream_ptr, mv_ptr;
-    unsigned char *pixel_ptr;
-    int line_inc;
-    int stride;
-    int upper_motion_limit_offset;
-
-    uint32_t pal[256];
-} IpvideoContext;
-
-static int copy_from(IpvideoContext *s, AVFrame *src, AVFrame *dst, int delta_x, int delta_y)
-{
-    int current_offset = s->pixel_ptr - dst->data[0];
-    int motion_offset = current_offset + delta_y * dst->linesize[0]
-                       + delta_x * (1 + s->is_16bpp);
-    if (motion_offset < 0) {
-        av_log(s->avctx, AV_LOG_ERROR, "motion offset < 0 (%d)\n", motion_offset);
-        return AVERROR_INVALIDDATA;
-    } else if (motion_offset > s->upper_motion_limit_offset) {
-        av_log(s->avctx, AV_LOG_ERROR, "motion offset above limit (%d >= %d)\n",
-            motion_offset, s->upper_motion_limit_offset);
-        return AVERROR_INVALIDDATA;
-    }
-    if (src->data[0] == NULL) {
-        av_log(s->avctx, AV_LOG_ERROR, "Invalid decode type, corrupted header?\n");
-        return AVERROR(EINVAL);
-    }
-    s->hdsp.put_pixels_tab[!s->is_16bpp][0](s->pixel_ptr, src->data[0] + motion_offset,
-                                            dst->linesize[0], 8);
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0x0(IpvideoContext *s, AVFrame *frame)
-{
-    return copy_from(s, s->last_frame, frame, 0, 0);
-}
-
-static int ipvideo_decode_block_opcode_0x1(IpvideoContext *s, AVFrame *frame)
-{
-    return copy_from(s, s->second_last_frame, frame, 0, 0);
-}
-
-static int ipvideo_decode_block_opcode_0x2(IpvideoContext *s, AVFrame *frame)
-{
-    unsigned char B;
-    int x, y;
-
-    /* copy block from 2 frames ago using a motion vector; need 1 more byte */
-    if (!s->is_16bpp) {
-        B = bytestream2_get_byte(&s->stream_ptr);
-    } else {
-        B = bytestream2_get_byte(&s->mv_ptr);
-    }
-
-    if (B < 56) {
-        x = 8 + (B % 7);
-        y = B / 7;
-    } else {
-        x = -14 + ((B - 56) % 29);
-        y =   8 + ((B - 56) / 29);
-    }
-
-    av_dlog(s->avctx, "motion byte = %d, (x, y) = (%d, %d)\n", B, x, y);
-    return copy_from(s, s->second_last_frame, frame, x, y);
-}
-
-static int ipvideo_decode_block_opcode_0x3(IpvideoContext *s, AVFrame *frame)
-{
-    unsigned char B;
-    int x, y;
-
-    /* copy 8x8 block from current frame from an up/left block */
-
-    /* need 1 more byte for motion */
-    if (!s->is_16bpp) {
-        B = bytestream2_get_byte(&s->stream_ptr);
-    } else {
-        B = bytestream2_get_byte(&s->mv_ptr);
-    }
-
-    if (B < 56) {
-        x = -(8 + (B % 7));
-        y = -(B / 7);
-    } else {
-        x = -(-14 + ((B - 56) % 29));
-        y = -(  8 + ((B - 56) / 29));
-    }
-
-    av_dlog(s->avctx, "motion byte = %d, (x, y) = (%d, %d)\n", B, x, y);
-    return copy_from(s, frame, frame, x, y);
-}
-
-static int ipvideo_decode_block_opcode_0x4(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    unsigned char B, BL, BH;
-
-    /* copy a block from the previous frame; need 1 more byte */
-    if (!s->is_16bpp) {
-        B = bytestream2_get_byte(&s->stream_ptr);
-    } else {
-        B = bytestream2_get_byte(&s->mv_ptr);
-    }
-
-    BL = B & 0x0F;
-    BH = (B >> 4) & 0x0F;
-    x = -8 + BL;
-    y = -8 + BH;
-
-    av_dlog(s->avctx, "motion byte = %d, (x, y) = (%d, %d)\n", B, x, y);
-    return copy_from(s, s->last_frame, frame, x, y);
-}
-
-static int ipvideo_decode_block_opcode_0x5(IpvideoContext *s, AVFrame *frame)
-{
-    signed char x, y;
-
-    /* copy a block from the previous frame using an expanded range;
-     * need 2 more bytes */
-    x = bytestream2_get_byte(&s->stream_ptr);
-    y = bytestream2_get_byte(&s->stream_ptr);
-
-    av_dlog(s->avctx, "motion bytes = %d, %d\n", x, y);
-    return copy_from(s, s->last_frame, frame, x, y);
-}
-
-static int ipvideo_decode_block_opcode_0x6(IpvideoContext *s, AVFrame *frame)
-{
-    /* mystery opcode? skip multiple blocks? */
-    av_log(s->avctx, AV_LOG_ERROR, "Help! Mystery opcode 0x6 seen\n");
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0x7(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    unsigned char P[2];
-    unsigned int flags;
-
-    /* 2-color encoding */
-    P[0] = bytestream2_get_byte(&s->stream_ptr);
-    P[1] = bytestream2_get_byte(&s->stream_ptr);
-
-    if (P[0] <= P[1]) {
-
-        /* need 8 more bytes from the stream */
-        for (y = 0; y < 8; y++) {
-            flags = bytestream2_get_byte(&s->stream_ptr) | 0x100;
-            for (; flags != 1; flags >>= 1)
-                *s->pixel_ptr++ = P[flags & 1];
-            s->pixel_ptr += s->line_inc;
-        }
-
-    } else {
-
-        /* need 2 more bytes from the stream */
-        flags = bytestream2_get_le16(&s->stream_ptr);
-        for (y = 0; y < 8; y += 2) {
-            for (x = 0; x < 8; x += 2, flags >>= 1) {
-                s->pixel_ptr[x                ] =
-                s->pixel_ptr[x + 1            ] =
-                s->pixel_ptr[x +     s->stride] =
-                s->pixel_ptr[x + 1 + s->stride] = P[flags & 1];
-            }
-            s->pixel_ptr += s->stride * 2;
-        }
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0x8(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    unsigned char P[4];
-    unsigned int flags = 0;
-
-    /* 2-color encoding for each 4x4 quadrant, or 2-color encoding on
-     * either top and bottom or left and right halves */
-    P[0] = bytestream2_get_byte(&s->stream_ptr);
-    P[1] = bytestream2_get_byte(&s->stream_ptr);
-
-    if (P[0] <= P[1]) {
-        for (y = 0; y < 16; y++) {
-            // new values for each 4x4 block
-            if (!(y & 3)) {
-                if (y) {
-                    P[0]  = bytestream2_get_byte(&s->stream_ptr);
-                    P[1]  = bytestream2_get_byte(&s->stream_ptr);
-                }
-                flags = bytestream2_get_le16(&s->stream_ptr);
-            }
-
-            for (x = 0; x < 4; x++, flags >>= 1)
-                *s->pixel_ptr++ = P[flags & 1];
-            s->pixel_ptr += s->stride - 4;
-            // switch to right half
-            if (y == 7) s->pixel_ptr -= 8 * s->stride - 4;
-        }
-
-    } else {
-        flags = bytestream2_get_le32(&s->stream_ptr);
-        P[2] = bytestream2_get_byte(&s->stream_ptr);
-        P[3] = bytestream2_get_byte(&s->stream_ptr);
-
-        if (P[2] <= P[3]) {
-
-            /* vertical split; left & right halves are 2-color encoded */
-
-            for (y = 0; y < 16; y++) {
-                for (x = 0; x < 4; x++, flags >>= 1)
-                    *s->pixel_ptr++ = P[flags & 1];
-                s->pixel_ptr += s->stride - 4;
-                // switch to right half
-                if (y == 7) {
-                    s->pixel_ptr -= 8 * s->stride - 4;
-                    P[0]  = P[2];
-                    P[1]  = P[3];
-                    flags = bytestream2_get_le32(&s->stream_ptr);
-                }
-            }
-
-        } else {
-
-            /* horizontal split; top & bottom halves are 2-color encoded */
-
-            for (y = 0; y < 8; y++) {
-                if (y == 4) {
-                    P[0]  = P[2];
-                    P[1]  = P[3];
-                    flags = bytestream2_get_le32(&s->stream_ptr);
-                }
-
-                for (x = 0; x < 8; x++, flags >>= 1)
-                    *s->pixel_ptr++ = P[flags & 1];
-                s->pixel_ptr += s->line_inc;
-            }
-        }
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0x9(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    unsigned char P[4];
-
-    /* 4-color encoding */
-    bytestream2_get_buffer(&s->stream_ptr, P, 4);
-
-    if (P[0] <= P[1]) {
-        if (P[2] <= P[3]) {
-
-            /* 1 of 4 colors for each pixel, need 16 more bytes */
-            for (y = 0; y < 8; y++) {
-                /* get the next set of 8 2-bit flags */
-                int flags = bytestream2_get_le16(&s->stream_ptr);
-                for (x = 0; x < 8; x++, flags >>= 2)
-                    *s->pixel_ptr++ = P[flags & 0x03];
-                s->pixel_ptr += s->line_inc;
-            }
-
-        } else {
-            uint32_t flags;
-
-            /* 1 of 4 colors for each 2x2 block, need 4 more bytes */
-            flags = bytestream2_get_le32(&s->stream_ptr);
-
-            for (y = 0; y < 8; y += 2) {
-                for (x = 0; x < 8; x += 2, flags >>= 2) {
-                    s->pixel_ptr[x                ] =
-                    s->pixel_ptr[x + 1            ] =
-                    s->pixel_ptr[x +     s->stride] =
-                    s->pixel_ptr[x + 1 + s->stride] = P[flags & 0x03];
-                }
-                s->pixel_ptr += s->stride * 2;
-            }
-
-        }
-    } else {
-        uint64_t flags;
-
-        /* 1 of 4 colors for each 2x1 or 1x2 block, need 8 more bytes */
-        flags = bytestream2_get_le64(&s->stream_ptr);
-        if (P[2] <= P[3]) {
-            for (y = 0; y < 8; y++) {
-                for (x = 0; x < 8; x += 2, flags >>= 2) {
-                    s->pixel_ptr[x    ] =
-                    s->pixel_ptr[x + 1] = P[flags & 0x03];
-                }
-                s->pixel_ptr += s->stride;
-            }
-        } else {
-            for (y = 0; y < 8; y += 2) {
-                for (x = 0; x < 8; x++, flags >>= 2) {
-                    s->pixel_ptr[x            ] =
-                    s->pixel_ptr[x + s->stride] = P[flags & 0x03];
-                }
-                s->pixel_ptr += s->stride * 2;
-            }
-        }
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0xA(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    unsigned char P[8];
-    int flags = 0;
-
-    bytestream2_get_buffer(&s->stream_ptr, P, 4);
-
-    /* 4-color encoding for each 4x4 quadrant, or 4-color encoding on
-     * either top and bottom or left and right halves */
-    if (P[0] <= P[1]) {
-
-        /* 4-color encoding for each quadrant; need 32 bytes */
-        for (y = 0; y < 16; y++) {
-            // new values for each 4x4 block
-            if (!(y & 3)) {
-                if (y) bytestream2_get_buffer(&s->stream_ptr, P, 4);
-                flags = bytestream2_get_le32(&s->stream_ptr);
-            }
-
-            for (x = 0; x < 4; x++, flags >>= 2)
-                *s->pixel_ptr++ = P[flags & 0x03];
-
-            s->pixel_ptr += s->stride - 4;
-            // switch to right half
-            if (y == 7) s->pixel_ptr -= 8 * s->stride - 4;
-        }
-
-    } else {
-        // vertical split?
-        int vert;
-        uint64_t flags = bytestream2_get_le64(&s->stream_ptr);
-
-        bytestream2_get_buffer(&s->stream_ptr, P + 4, 4);
-        vert = P[4] <= P[5];
-
-        /* 4-color encoding for either left and right or top and bottom
-         * halves */
-
-        for (y = 0; y < 16; y++) {
-            for (x = 0; x < 4; x++, flags >>= 2)
-                *s->pixel_ptr++ = P[flags & 0x03];
-
-            if (vert) {
-                s->pixel_ptr += s->stride - 4;
-                // switch to right half
-                if (y == 7) s->pixel_ptr -= 8 * s->stride - 4;
-            } else if (y & 1) s->pixel_ptr += s->line_inc;
-
-            // load values for second half
-            if (y == 7) {
-                memcpy(P, P + 4, 4);
-                flags = bytestream2_get_le64(&s->stream_ptr);
-            }
-        }
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0xB(IpvideoContext *s, AVFrame *frame)
-{
-    int y;
-
-    /* 64-color encoding (each pixel in block is a different color) */
-    for (y = 0; y < 8; y++) {
-        bytestream2_get_buffer(&s->stream_ptr, s->pixel_ptr, 8);
-        s->pixel_ptr  += s->stride;
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0xC(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-
-    /* 16-color block encoding: each 2x2 block is a different color */
-    for (y = 0; y < 8; y += 2) {
-        for (x = 0; x < 8; x += 2) {
-            s->pixel_ptr[x                ] =
-            s->pixel_ptr[x + 1            ] =
-            s->pixel_ptr[x +     s->stride] =
-            s->pixel_ptr[x + 1 + s->stride] = bytestream2_get_byte(&s->stream_ptr);
-        }
-        s->pixel_ptr += s->stride * 2;
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0xD(IpvideoContext *s, AVFrame *frame)
-{
-    int y;
-    unsigned char P[2];
-
-    /* 4-color block encoding: each 4x4 block is a different color */
-    for (y = 0; y < 8; y++) {
-        if (!(y & 3)) {
-            P[0] = bytestream2_get_byte(&s->stream_ptr);
-            P[1] = bytestream2_get_byte(&s->stream_ptr);
-        }
-        memset(s->pixel_ptr,     P[0], 4);
-        memset(s->pixel_ptr + 4, P[1], 4);
-        s->pixel_ptr += s->stride;
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0xE(IpvideoContext *s, AVFrame *frame)
-{
-    int y;
-    unsigned char pix;
-
-    /* 1-color encoding: the whole block is 1 solid color */
-    pix = bytestream2_get_byte(&s->stream_ptr);
-
-    for (y = 0; y < 8; y++) {
-        memset(s->pixel_ptr, pix, 8);
-        s->pixel_ptr += s->stride;
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0xF(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    unsigned char sample[2];
-
-    /* dithered encoding */
-    sample[0] = bytestream2_get_byte(&s->stream_ptr);
-    sample[1] = bytestream2_get_byte(&s->stream_ptr);
-
-    for (y = 0; y < 8; y++) {
-        for (x = 0; x < 8; x += 2) {
-            *s->pixel_ptr++ = sample[  y & 1 ];
-            *s->pixel_ptr++ = sample[!(y & 1)];
-        }
-        s->pixel_ptr += s->line_inc;
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0x6_16(IpvideoContext *s, AVFrame *frame)
-{
-    signed char x, y;
-
-    /* copy a block from the second last frame using an expanded range */
-    x = bytestream2_get_byte(&s->stream_ptr);
-    y = bytestream2_get_byte(&s->stream_ptr);
-
-    av_dlog(s->avctx, "motion bytes = %d, %d\n", x, y);
-    return copy_from(s, s->second_last_frame, frame, x, y);
-}
-
-static int ipvideo_decode_block_opcode_0x7_16(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    uint16_t P[2];
-    unsigned int flags;
-    uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr;
-
-    /* 2-color encoding */
-    P[0] = bytestream2_get_le16(&s->stream_ptr);
-    P[1] = bytestream2_get_le16(&s->stream_ptr);
-
-    if (!(P[0] & 0x8000)) {
-
-        for (y = 0; y < 8; y++) {
-            flags = bytestream2_get_byte(&s->stream_ptr) | 0x100;
-            for (; flags != 1; flags >>= 1)
-                *pixel_ptr++ = P[flags & 1];
-            pixel_ptr += s->line_inc;
-        }
-
-    } else {
-
-        flags = bytestream2_get_le16(&s->stream_ptr);
-        for (y = 0; y < 8; y += 2) {
-            for (x = 0; x < 8; x += 2, flags >>= 1) {
-                pixel_ptr[x                ] =
-                pixel_ptr[x + 1            ] =
-                pixel_ptr[x +     s->stride] =
-                pixel_ptr[x + 1 + s->stride] = P[flags & 1];
-            }
-            pixel_ptr += s->stride * 2;
-        }
-    }
-
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0x8_16(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    uint16_t P[4];
-    unsigned int flags = 0;
-    uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr;
-
-    /* 2-color encoding for each 4x4 quadrant, or 2-color encoding on
-     * either top and bottom or left and right halves */
-    P[0] = bytestream2_get_le16(&s->stream_ptr);
-    P[1] = bytestream2_get_le16(&s->stream_ptr);
-
-    if (!(P[0] & 0x8000)) {
-
-        for (y = 0; y < 16; y++) {
-            // new values for each 4x4 block
-            if (!(y & 3)) {
-                if (y) {
-                    P[0] = bytestream2_get_le16(&s->stream_ptr);
-                    P[1] = bytestream2_get_le16(&s->stream_ptr);
-                }
-                flags = bytestream2_get_le16(&s->stream_ptr);
-            }
-
-            for (x = 0; x < 4; x++, flags >>= 1)
-                *pixel_ptr++ = P[flags & 1];
-            pixel_ptr += s->stride - 4;
-            // switch to right half
-            if (y == 7) pixel_ptr -= 8 * s->stride - 4;
-        }
-
-    } else {
-
-        flags = bytestream2_get_le32(&s->stream_ptr);
-        P[2]  = bytestream2_get_le16(&s->stream_ptr);
-        P[3]  = bytestream2_get_le16(&s->stream_ptr);
-
-        if (!(P[2] & 0x8000)) {
-
-            /* vertical split; left & right halves are 2-color encoded */
-
-            for (y = 0; y < 16; y++) {
-                for (x = 0; x < 4; x++, flags >>= 1)
-                    *pixel_ptr++ = P[flags & 1];
-                pixel_ptr += s->stride - 4;
-                // switch to right half
-                if (y == 7) {
-                    pixel_ptr -= 8 * s->stride - 4;
-                    P[0]  = P[2];
-                    P[1]  = P[3];
-                    flags = bytestream2_get_le32(&s->stream_ptr);
-                }
-            }
-
-        } else {
-
-            /* horizontal split; top & bottom halves are 2-color encoded */
-
-            for (y = 0; y < 8; y++) {
-                if (y == 4) {
-                    P[0]  = P[2];
-                    P[1]  = P[3];
-                    flags = bytestream2_get_le32(&s->stream_ptr);
-                }
-
-                for (x = 0; x < 8; x++, flags >>= 1)
-                    *pixel_ptr++ = P[flags & 1];
-                pixel_ptr += s->line_inc;
-            }
-        }
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0x9_16(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    uint16_t P[4];
-    uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr;
-
-    /* 4-color encoding */
-    for (x = 0; x < 4; x++)
-        P[x] = bytestream2_get_le16(&s->stream_ptr);
-
-    if (!(P[0] & 0x8000)) {
-        if (!(P[2] & 0x8000)) {
-
-            /* 1 of 4 colors for each pixel */
-            for (y = 0; y < 8; y++) {
-                /* get the next set of 8 2-bit flags */
-                int flags = bytestream2_get_le16(&s->stream_ptr);
-                for (x = 0; x < 8; x++, flags >>= 2)
-                    *pixel_ptr++ = P[flags & 0x03];
-                pixel_ptr += s->line_inc;
-            }
-
-        } else {
-            uint32_t flags;
-
-            /* 1 of 4 colors for each 2x2 block */
-            flags = bytestream2_get_le32(&s->stream_ptr);
-
-            for (y = 0; y < 8; y += 2) {
-                for (x = 0; x < 8; x += 2, flags >>= 2) {
-                    pixel_ptr[x                ] =
-                    pixel_ptr[x + 1            ] =
-                    pixel_ptr[x +     s->stride] =
-                    pixel_ptr[x + 1 + s->stride] = P[flags & 0x03];
-                }
-                pixel_ptr += s->stride * 2;
-            }
-
-        }
-    } else {
-        uint64_t flags;
-
-        /* 1 of 4 colors for each 2x1 or 1x2 block */
-        flags = bytestream2_get_le64(&s->stream_ptr);
-        if (!(P[2] & 0x8000)) {
-            for (y = 0; y < 8; y++) {
-                for (x = 0; x < 8; x += 2, flags >>= 2) {
-                    pixel_ptr[x    ] =
-                    pixel_ptr[x + 1] = P[flags & 0x03];
-                }
-                pixel_ptr += s->stride;
-            }
-        } else {
-            for (y = 0; y < 8; y += 2) {
-                for (x = 0; x < 8; x++, flags >>= 2) {
-                    pixel_ptr[x            ] =
-                    pixel_ptr[x + s->stride] = P[flags & 0x03];
-                }
-                pixel_ptr += s->stride * 2;
-            }
-        }
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0xA_16(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    uint16_t P[8];
-    int flags = 0;
-    uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr;
-
-    for (x = 0; x < 4; x++)
-        P[x] = bytestream2_get_le16(&s->stream_ptr);
-
-    /* 4-color encoding for each 4x4 quadrant, or 4-color encoding on
-     * either top and bottom or left and right halves */
-    if (!(P[0] & 0x8000)) {
-
-        /* 4-color encoding for each quadrant */
-        for (y = 0; y < 16; y++) {
-            // new values for each 4x4 block
-            if (!(y & 3)) {
-                if (y)
-                    for (x = 0; x < 4; x++)
-                        P[x] = bytestream2_get_le16(&s->stream_ptr);
-                flags = bytestream2_get_le32(&s->stream_ptr);
-            }
-
-            for (x = 0; x < 4; x++, flags >>= 2)
-                *pixel_ptr++ = P[flags & 0x03];
-
-            pixel_ptr += s->stride - 4;
-            // switch to right half
-            if (y == 7) pixel_ptr -= 8 * s->stride - 4;
-        }
-
-    } else {
-        // vertical split?
-        int vert;
-        uint64_t flags = bytestream2_get_le64(&s->stream_ptr);
-
-        for (x = 4; x < 8; x++)
-            P[x] = bytestream2_get_le16(&s->stream_ptr);
-        vert = !(P[4] & 0x8000);
-
-        /* 4-color encoding for either left and right or top and bottom
-         * halves */
-
-        for (y = 0; y < 16; y++) {
-            for (x = 0; x < 4; x++, flags >>= 2)
-                *pixel_ptr++ = P[flags & 0x03];
-
-            if (vert) {
-                pixel_ptr += s->stride - 4;
-                // switch to right half
-                if (y == 7) pixel_ptr -= 8 * s->stride - 4;
-            } else if (y & 1) pixel_ptr += s->line_inc;
-
-            // load values for second half
-            if (y == 7) {
-                memcpy(P, P + 4, 8);
-                flags = bytestream2_get_le64(&s->stream_ptr);
-            }
-        }
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0xB_16(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr;
-
-    /* 64-color encoding (each pixel in block is a different color) */
-    for (y = 0; y < 8; y++) {
-        for (x = 0; x < 8; x++)
-            pixel_ptr[x] = bytestream2_get_le16(&s->stream_ptr);
-        pixel_ptr  += s->stride;
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0xC_16(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr;
-
-    /* 16-color block encoding: each 2x2 block is a different color */
-    for (y = 0; y < 8; y += 2) {
-        for (x = 0; x < 8; x += 2) {
-            pixel_ptr[x                ] =
-            pixel_ptr[x + 1            ] =
-            pixel_ptr[x +     s->stride] =
-            pixel_ptr[x + 1 + s->stride] = bytestream2_get_le16(&s->stream_ptr);
-        }
-        pixel_ptr += s->stride * 2;
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0xD_16(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    uint16_t P[2];
-    uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr;
-
-    /* 4-color block encoding: each 4x4 block is a different color */
-    for (y = 0; y < 8; y++) {
-        if (!(y & 3)) {
-            P[0] = bytestream2_get_le16(&s->stream_ptr);
-            P[1] = bytestream2_get_le16(&s->stream_ptr);
-        }
-        for (x = 0; x < 8; x++)
-            pixel_ptr[x] = P[x >> 2];
-        pixel_ptr += s->stride;
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int ipvideo_decode_block_opcode_0xE_16(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    uint16_t pix;
-    uint16_t *pixel_ptr = (uint16_t*)s->pixel_ptr;
-
-    /* 1-color encoding: the whole block is 1 solid color */
-    pix = bytestream2_get_le16(&s->stream_ptr);
-
-    for (y = 0; y < 8; y++) {
-        for (x = 0; x < 8; x++)
-            pixel_ptr[x] = pix;
-        pixel_ptr += s->stride;
-    }
-
-    /* report success */
-    return 0;
-}
-
-static int (* const ipvideo_decode_block[])(IpvideoContext *s, AVFrame *frame) = {
-    ipvideo_decode_block_opcode_0x0, ipvideo_decode_block_opcode_0x1,
-    ipvideo_decode_block_opcode_0x2, ipvideo_decode_block_opcode_0x3,
-    ipvideo_decode_block_opcode_0x4, ipvideo_decode_block_opcode_0x5,
-    ipvideo_decode_block_opcode_0x6, ipvideo_decode_block_opcode_0x7,
-    ipvideo_decode_block_opcode_0x8, ipvideo_decode_block_opcode_0x9,
-    ipvideo_decode_block_opcode_0xA, ipvideo_decode_block_opcode_0xB,
-    ipvideo_decode_block_opcode_0xC, ipvideo_decode_block_opcode_0xD,
-    ipvideo_decode_block_opcode_0xE, ipvideo_decode_block_opcode_0xF,
-};
-
-static int (* const ipvideo_decode_block16[])(IpvideoContext *s, AVFrame *frame) = {
-    ipvideo_decode_block_opcode_0x0,    ipvideo_decode_block_opcode_0x1,
-    ipvideo_decode_block_opcode_0x2,    ipvideo_decode_block_opcode_0x3,
-    ipvideo_decode_block_opcode_0x4,    ipvideo_decode_block_opcode_0x5,
-    ipvideo_decode_block_opcode_0x6_16, ipvideo_decode_block_opcode_0x7_16,
-    ipvideo_decode_block_opcode_0x8_16, ipvideo_decode_block_opcode_0x9_16,
-    ipvideo_decode_block_opcode_0xA_16, ipvideo_decode_block_opcode_0xB_16,
-    ipvideo_decode_block_opcode_0xC_16, ipvideo_decode_block_opcode_0xD_16,
-    ipvideo_decode_block_opcode_0xE_16, ipvideo_decode_block_opcode_0x1,
-};
-
-static void ipvideo_decode_opcodes(IpvideoContext *s, AVFrame *frame)
-{
-    int x, y;
-    unsigned char opcode;
-    int ret;
-    GetBitContext gb;
-
-    bytestream2_skip(&s->stream_ptr, 14); /* data starts 14 bytes in */
-    if (!s->is_16bpp) {
-        /* this is PAL8, so make the palette available */
-        memcpy(frame->data[1], s->pal, AVPALETTE_SIZE);
-
-        s->stride = frame->linesize[0];
-    } else {
-        s->stride = frame->linesize[0] >> 1;
-        s->mv_ptr = s->stream_ptr;
-        bytestream2_skip(&s->mv_ptr, bytestream2_get_le16(&s->stream_ptr));
-    }
-    s->line_inc = s->stride - 8;
-    s->upper_motion_limit_offset = (s->avctx->height - 8) * frame->linesize[0]
-                                  + (s->avctx->width - 8) * (1 + s->is_16bpp);
-
-    init_get_bits(&gb, s->decoding_map, s->decoding_map_size * 8);
-    for (y = 0; y < s->avctx->height; y += 8) {
-        for (x = 0; x < s->avctx->width; x += 8) {
-            opcode = get_bits(&gb, 4);
-
-            av_dlog(s->avctx,
-                    "  block @ (%3d, %3d): encoding 0x%X, data ptr offset %d\n",
-                    x, y, opcode, bytestream2_tell(&s->stream_ptr));
-
-            if (!s->is_16bpp) {
-                s->pixel_ptr = frame->data[0] + x
-                              + y*frame->linesize[0];
-                ret = ipvideo_decode_block[opcode](s, frame);
-            } else {
-                s->pixel_ptr = frame->data[0] + x*2
-                              + y*frame->linesize[0];
-                ret = ipvideo_decode_block16[opcode](s, frame);
-            }
-            if (ret != 0) {
-                av_log(s->avctx, AV_LOG_ERROR, "decode problem on frame %d, @ block (%d, %d)\n",
-                       s->avctx->frame_number, x, y);
-                return;
-            }
-        }
-    }
-    if (bytestream2_get_bytes_left(&s->stream_ptr) > 1) {
-        av_log(s->avctx, AV_LOG_ERROR,
-               "decode finished with %d bytes left over\n",
-               bytestream2_get_bytes_left(&s->stream_ptr));
-    }
-}
-
-static av_cold int ipvideo_decode_init(AVCodecContext *avctx)
-{
-    IpvideoContext *s = avctx->priv_data;
-
-    s->avctx = avctx;
-
-    s->is_16bpp = avctx->bits_per_coded_sample == 16;
-    avctx->pix_fmt = s->is_16bpp ? AV_PIX_FMT_RGB555 : AV_PIX_FMT_PAL8;
-
-    ff_hpeldsp_init(&s->hdsp, avctx->flags);
-
-    s->last_frame        = av_frame_alloc();
-    s->second_last_frame = av_frame_alloc();
-    if (!s->last_frame || !s->second_last_frame) {
-        av_frame_free(&s->last_frame);
-        av_frame_free(&s->second_last_frame);
-        return AVERROR(ENOMEM);
-    }
-
-    return 0;
-}
-
-static int ipvideo_decode_frame(AVCodecContext *avctx,
-                                void *data, int *got_frame,
-                                AVPacket *avpkt)
-{
-    const uint8_t *buf = avpkt->data;
-    int buf_size = avpkt->size;
-    IpvideoContext *s = avctx->priv_data;
-    AVFrame *frame = data;
-    int ret;
-
-    /* decoding map contains 4 bits of information per 8x8 block */
-    s->decoding_map_size = avctx->width * avctx->height / (8 * 8 * 2);
-
-    /* compressed buffer needs to be large enough to at least hold an entire
-     * decoding map */
-    if (buf_size < s->decoding_map_size)
-        return buf_size;
-
-    if (av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, NULL)) {
-        av_frame_unref(s->last_frame);
-        av_frame_unref(s->second_last_frame);
-    }
-
-    s->decoding_map = buf;
-    bytestream2_init(&s->stream_ptr, buf + s->decoding_map_size,
-                     buf_size - s->decoding_map_size);
-
-    if ((ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF)) < 0)
-        return ret;
-
-    if (!s->is_16bpp) {
-        const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, NULL);
-        if (pal) {
-            frame->palette_has_changed = 1;
-            memcpy(s->pal, pal, AVPALETTE_SIZE);
-        }
-    }
-
-    ipvideo_decode_opcodes(s, frame);
-
-    *got_frame = 1;
-
-    /* shuffle frames */
-    av_frame_unref(s->second_last_frame);
-    FFSWAP(AVFrame*, s->second_last_frame, s->last_frame);
-    if ((ret = av_frame_ref(s->last_frame, frame)) < 0)
-        return ret;
-
-    /* report that the buffer was completely consumed */
-    return buf_size;
-}
-
-static av_cold int ipvideo_decode_end(AVCodecContext *avctx)
-{
-    IpvideoContext *s = avctx->priv_data;
-
-    av_frame_free(&s->last_frame);
-    av_frame_free(&s->second_last_frame);
-
-    return 0;
-}
-
-AVCodec ff_interplay_video_decoder = {
-    .name           = "interplayvideo",
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_INTERPLAY_VIDEO,
-    .priv_data_size = sizeof(IpvideoContext),
-    .init           = ipvideo_decode_init,
-    .close          = ipvideo_decode_end,
-    .decode         = ipvideo_decode_frame,
-    .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_PARAM_CHANGE,
-    .long_name      = NULL_IF_CONFIG_SMALL("Interplay MVE video"),
-};