New demuxers: Sega FILM/CPK, Westwood VQA & AUD; new decoders: MS RLE &

Video-1, Apple RPZA, Cinepak, Westwood IMA ADPCM

Originally committed as revision 2324 to svn://svn.ffmpeg.org/ffmpeg/trunk

CREDITS

@@ -16,4 +16,6 @@ Michael Niedermayer
 François Revol
 Dieter Shirley
 Juan J. Sierralta
+Ewald Snel
+Roberto Togni
 Lionel Ulmer

Changelog

@@ -1,3 +1,11 @@
+version <next>:
+- Microsoft RLE video decoder
+- Microsoft Video-1 decoder
+- Apple Video (RPZA) decoder
+- Cinepak decoder
+- Sega FILM (CPK) file demuxer
+- Westwood multimedia support (VQA/AUD file demuxer, audio decoder)
+
 version 0.4.8:
 
 - MPEG2 video encoding (Michael)

doc/ffmpeg-doc.texi

@@ -628,6 +628,10 @@ library:
 @tab format used in various Interplay computer games
 @item WC3 Movie        @tab    @tab X
 @tab multimedia format used in Origin's Wing Commander III computer game
+@item Sega FILM/CPK    @tab    @tab X
+@tab used in many Sega Saturn console games
+@item Westwood Studios VQA/AUD  @tab    @tab X
+@tab Multimedia formats used in Westwood Studios games
 @end multitable
 
 @code{X} means that the encoding (resp. decoding) is supported.
@@ -682,6 +686,10 @@ following image formats are supported:
 @item Id RoQ                 @tab     @tab  X @tab used in Quake III, Jedi Knight 2, other computer games
 @item Xan/WC3                @tab     @tab  X @tab used in Wing Commander III .MVE files
 @item Interplay Video        @tab     @tab  X @tab used in Interplay .MVE files
+@item Apple Video            @tab     @tab  X @tab fourcc: rpza
+@item Cinepak                @tab     @tab  X
+@item Microsoft RLE          @tab     @tab  X
+@item Microsoft Video-1      @tab     @tab  X
 @end multitable
 
 @code{X} means that the encoding (resp. decoding) is supported.
@@ -710,6 +718,8 @@ solutions.
 @tab used in some Sega Saturn console games
 @item Duck DK4 IMA ADPCM     @tab      @tab X
 @tab used in some Sega Saturn console games
+@item Westwood Studios IMA ADPCM @tab      @tab X
+@tab used in Westwood Studios games likes Command and Conquer
 @item RA144                  @tab      @tab X
 @tab Real 14400 bit/s codec
 @item RA288                  @tab      @tab X

libavcodec/Makefile

@@ -17,7 +17,8 @@ OBJS= common.o utils.o mem.o allcodecs.o \
       ratecontrol.o adpcm.o eval.o dv.o error_resilience.o \
       fft.o mdct.o mace.o huffyuv.o cyuv.o opts.o raw.o h264.o golomb.o \
       vp3.o asv1.o 4xm.o cabac.o ffv1.o ra144.o ra288.o vcr1.o cljr.o \
-      roqvideo.o dpcm.o interplayvideo.o xan.o
+      roqvideo.o dpcm.o interplayvideo.o xan.o rpza.o cinepak.o msrle.o \
+      msvideo1.o
 
 ifeq ($(AMR_NB),yes)
 ifeq ($(AMR_NB_FIXED),yes)

libavcodec/adpcm.c

@@ -22,7 +22,7 @@
  * @file adpcm.c
  * ADPCM codecs.
  * First version by Francois Revol revol@free.fr
- * Fringe ADPCM codecs (e.g., DK3 and DK4) 
+ * Fringe ADPCM codecs (e.g., DK3, DK4, Westwood)
  *   by Mike Melanson (melanson@pcisys.net)
  *
  * Features and limitations:
@@ -658,6 +658,25 @@ static int adpcm_decode_frame(AVCodecContext *avctx,
             *samples++ = c->status[0].predictor - c->status[1].predictor;
         }
         break;
+    case CODEC_ID_ADPCM_IMA_WS:
+        /* no per-block initialization; just start decoding the data */
+        while (src < buf + buf_size) {
+
+            if (st) {
+                *samples++ = adpcm_ima_expand_nibble(&c->status[0], 
+                    (src[0] >> 4) & 0x0F);
+                *samples++ = adpcm_ima_expand_nibble(&c->status[1], 
+                    src[0] & 0x0F);
+            } else {
+                *samples++ = adpcm_ima_expand_nibble(&c->status[0], 
+                    (src[0] >> 4) & 0x0F);
+                *samples++ = adpcm_ima_expand_nibble(&c->status[0], 
+                    src[0] & 0x0F);
+            }
+
+            src++;
+        }
+        break;
     default:
         *data_size = 0;
         return -1;
@@ -692,6 +711,7 @@ ADPCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
 ADPCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
 ADPCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
 ADPCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
+ADPCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
 ADPCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
 ADPCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
 

libavcodec/allcodecs.c

@@ -123,6 +123,10 @@ void avcodec_register_all(void)
     register_avcodec(&roq_decoder);
     register_avcodec(&interplay_video_decoder);
     register_avcodec(&xan_wc3_decoder);
+    register_avcodec(&rpza_decoder);
+    register_avcodec(&cinepak_decoder);
+    register_avcodec(&msrle_decoder);
+    register_avcodec(&msvideo1_decoder);
 #ifdef CONFIG_AC3
     register_avcodec(&ac3_decoder);
 #endif
@@ -163,6 +167,7 @@ PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
+PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
 

libavcodec/avcodec.h

@@ -74,6 +74,11 @@ enum CodecID {
     CODEC_ID_INTERPLAY_VIDEO,
     CODEC_ID_XAN_WC3,
     CODEC_ID_XAN_WC4,
+    CODEC_ID_RPZA,
+    CODEC_ID_CINEPAK,
+    CODEC_ID_WS_VQA,
+    CODEC_ID_MSRLE,
+    CODEC_ID_MSVIDEO1,
 
     /* various pcm "codecs" */
     CODEC_ID_PCM_S16LE,
@@ -90,6 +95,7 @@ enum CodecID {
     CODEC_ID_ADPCM_IMA_WAV,
     CODEC_ID_ADPCM_IMA_DK3,
     CODEC_ID_ADPCM_IMA_DK4,
+    CODEC_ID_ADPCM_IMA_WS,
     CODEC_ID_ADPCM_MS,
     CODEC_ID_ADPCM_4XM,
 
@@ -1419,6 +1425,10 @@ extern AVCodec mdec_decoder;
 extern AVCodec roq_decoder;
 extern AVCodec interplay_video_decoder;
 extern AVCodec xan_wc3_decoder;
+extern AVCodec rpza_decoder;
+extern AVCodec cinepak_decoder;
+extern AVCodec msrle_decoder;
+extern AVCodec msvideo1_decoder;
 extern AVCodec ra_144_decoder;
 extern AVCodec ra_288_decoder;
 extern AVCodec roq_dpcm_decoder;
@@ -1445,6 +1455,7 @@ PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
 PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
 PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
+PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
 PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
 PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
 

libavcodec/cinepak.c

@@ -0,0 +1,456 @@
+/*
+ * Cinepak Video Decoder
+ * Copyright (C) 2003 the ffmpeg project
+ *
+ * This library 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 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+/**
+ * @file cinepak.c
+ * Cinepak video decoder
+ * by Ewald Snel <ewald@rambo.its.tudelft.nl>
+ * For more information on the Cinepak algorithm, visit:
+ *   http://www.csse.monash.edu.au/~timf/
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "common.h"
+#include "avcodec.h"
+#include "dsputil.h"
+
+#define PALETTE_COUNT 256
+
+#define BE_16(x)  ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
+#define BE_32(x)  ((((uint8_t*)(x))[0] << 24) | \
+                   (((uint8_t*)(x))[1] << 16) | \
+                   (((uint8_t*)(x))[2] << 8) | \
+                    ((uint8_t*)(x))[3])
+
+typedef struct {
+    uint8_t  y0, y1, y2, y3;
+    uint8_t  u, v;
+} cvid_codebook_t;
+
+#define MAX_STRIPS      32
+
+typedef struct {
+    uint16_t          id;
+    uint16_t          x1, y1;
+    uint16_t          x2, y2;
+    cvid_codebook_t   v4_codebook[256];
+    cvid_codebook_t   v1_codebook[256];
+} cvid_strip_t;
+
+typedef struct CinepakContext {
+
+    AVCodecContext *avctx;
+    DSPContext dsp;
+    AVFrame frame;
+    AVFrame prev_frame;
+
+    unsigned char *data;
+    int size;
+
+    unsigned char palette[PALETTE_COUNT * 4];
+    int palette_video;
+    cvid_strip_t strips[MAX_STRIPS];
+
+} CinepakContext;
+
+static void cinepak_decode_codebook (cvid_codebook_t *codebook,
+                                     int chunk_id, int size, uint8_t *data)
+{
+    uint8_t *eod = (data + size);
+    uint32_t flag, mask;
+    int      i, n;
+
+    /* check if this chunk contains 4- or 6-element vectors */
+    n    = (chunk_id & 0x0400) ? 4 : 6;
+    flag = 0;
+    mask = 0;
+
+    for (i=0; i < 256; i++) {
+        if ((chunk_id & 0x0100) && !(mask >>= 1)) {
+            if ((data + 4) > eod)
+                break;
+
+            flag  = BE_32 (data);
+            data += 4;
+            mask  = 0x80000000;
+        }
+
+        if (!(chunk_id & 0x0100) || (flag & mask)) {
+            if ((data + n) > eod)
+                break;
+
+            if (n == 6) {
+                codebook[i].y0 = *data++;
+                codebook[i].y1 = *data++;
+                codebook[i].y2 = *data++;
+                codebook[i].y3 = *data++;
+                codebook[i].u  = 128 + *data++;
+                codebook[i].v  = 128 + *data++;
+            } else {
+                /* this codebook type indicates either greyscale or 
+                 * palettized video; if palettized, U & V components will
+                 * not be used so it is safe to set them to 128 for the
+                 * benefit of greyscale rendering in YUV420P */
+                codebook[i].y0 = *data++;
+                codebook[i].y1 = *data++;
+                codebook[i].y2 = *data++;
+                codebook[i].y3 = *data++;
+                codebook[i].u  = 128;
+                codebook[i].v  = 128;
+            }
+        }
+    }
+}
+
+static int cinepak_decode_vectors (CinepakContext *s, cvid_strip_t *strip,
+                                   int chunk_id, int size, uint8_t *data)
+{
+    uint8_t         *eod = (data + size);
+    uint32_t         flag, mask;
+    cvid_codebook_t *codebook;
+    unsigned int     i, j, x, y;
+    uint32_t         iy[4];
+    uint32_t         iu[2];
+    uint32_t         iv[2];
+
+    flag = 0;
+    mask = 0;
+
+    for (y=strip->y1; y < strip->y2; y+=4) {
+
+        iy[0] = strip->x1 + (y * s->frame.linesize[0]);
+        iy[1] = iy[0] + s->frame.linesize[0];
+        iy[2] = iy[1] + s->frame.linesize[0];
+        iy[3] = iy[2] + s->frame.linesize[0];
+        iu[0] = (strip->x1/2) + ((y/2) * s->frame.linesize[1]);
+        iu[1] = iu[0] + s->frame.linesize[1];
+        iv[0] = (strip->x1/2) + ((y/2) * s->frame.linesize[2]);
+        iv[1] = iv[0] + s->frame.linesize[2];
+
+        for (x=strip->x1; x < strip->x2; x+=4) {
+            if ((chunk_id & 0x0100) && !(mask >>= 1)) {
+                if ((data + 4) > eod)
+                    return -1;
+
+                flag  = BE_32 (data);
+                data += 4;
+                mask  = 0x80000000;
+            }
+
+            if (!(chunk_id & 0x0100) || (flag & mask)) {
+                if (!(chunk_id & 0x0200) && !(mask >>= 1)) {
+                    if ((data + 4) > eod)
+                        return -1;
+
+                    flag  = BE_32 (data);
+                    data += 4;
+                    mask  = 0x80000000;
+                }
+
+                if ((chunk_id & 0x0200) || (~flag & mask)) {
+                    if (data >= eod)
+                        return -1;
+
+                    codebook = &strip->v1_codebook[*data++];
+                    s->frame.data[0][iy[0] + 0] = codebook->y0;
+                    s->frame.data[0][iy[0] + 1] = codebook->y0;
+                    s->frame.data[0][iy[1] + 0] = codebook->y0;
+                    s->frame.data[0][iy[1] + 1] = codebook->y0;
+                    if (!s->palette_video) {
+                        s->frame.data[1][iu[0]] = codebook->u;
+                        s->frame.data[2][iv[0]] = codebook->v;
+                    }
+
+                    s->frame.data[0][iy[0] + 2] = codebook->y0;
+                    s->frame.data[0][iy[0] + 3] = codebook->y0;
+                    s->frame.data[0][iy[1] + 2] = codebook->y0;
+                    s->frame.data[0][iy[1] + 3] = codebook->y0;
+                    if (!s->palette_video) {
+                        s->frame.data[1][iu[0] + 1] = codebook->u;
+                        s->frame.data[2][iv[0] + 1] = codebook->v;
+                    }
+
+                    s->frame.data[0][iy[2] + 0] = codebook->y0;
+                    s->frame.data[0][iy[2] + 1] = codebook->y0;
+                    s->frame.data[0][iy[3] + 0] = codebook->y0;
+                    s->frame.data[0][iy[3] + 1] = codebook->y0;
+                    if (!s->palette_video) {
+                        s->frame.data[1][iu[1]] = codebook->u;
+                        s->frame.data[2][iv[1]] = codebook->v;
+                    }
+
+                    s->frame.data[0][iy[2] + 2] = codebook->y0;
+                    s->frame.data[0][iy[2] + 3] = codebook->y0;
+                    s->frame.data[0][iy[3] + 2] = codebook->y0;
+                    s->frame.data[0][iy[3] + 3] = codebook->y0;
+                    if (!s->palette_video) {
+                        s->frame.data[1][iu[1] + 1] = codebook->u;
+                        s->frame.data[2][iv[1] + 1] = codebook->v;
+                    }
+
+                } else if (flag & mask) {
+                    if ((data + 4) > eod)
+                        return -1;
+
+                    codebook = &strip->v4_codebook[*data++];
+                    s->frame.data[0][iy[0] + 0] = codebook->y0;
+                    s->frame.data[0][iy[0] + 1] = codebook->y1;
+                    s->frame.data[0][iy[1] + 0] = codebook->y2;
+                    s->frame.data[0][iy[1] + 1] = codebook->y3;
+                    if (!s->palette_video) {
+                        s->frame.data[1][iu[0]] = codebook->u;
+                        s->frame.data[2][iv[0]] = codebook->v;
+                    }
+
+                    codebook = &strip->v4_codebook[*data++];
+                    s->frame.data[0][iy[0] + 2] = codebook->y0;
+                    s->frame.data[0][iy[0] + 3] = codebook->y1;
+                    s->frame.data[0][iy[1] + 2] = codebook->y2;
+                    s->frame.data[0][iy[1] + 3] = codebook->y3;
+                    if (!s->palette_video) {
+                        s->frame.data[1][iu[0] + 1] = codebook->u;
+                        s->frame.data[2][iv[0] + 1] = codebook->v;
+                    }
+
+                    codebook = &strip->v4_codebook[*data++];
+                    s->frame.data[0][iy[2] + 0] = codebook->y0;
+                    s->frame.data[0][iy[2] + 1] = codebook->y1;
+                    s->frame.data[0][iy[3] + 0] = codebook->y2;
+                    s->frame.data[0][iy[3] + 1] = codebook->y3;
+                    if (!s->palette_video) {
+                        s->frame.data[1][iu[1]] = codebook->u;
+                        s->frame.data[2][iv[1]] = codebook->v;
+                    }
+
+                    codebook = &strip->v4_codebook[*data++];
+                    s->frame.data[0][iy[2] + 2] = codebook->y0;
+                    s->frame.data[0][iy[2] + 3] = codebook->y1;
+                    s->frame.data[0][iy[3] + 2] = codebook->y2;
+                    s->frame.data[0][iy[3] + 3] = codebook->y3;
+                    if (!s->palette_video) {
+                        s->frame.data[1][iu[1] + 1] = codebook->u;
+                        s->frame.data[2][iv[1] + 1] = codebook->v;
+                    }
+
+                }
+            } else {
+                /* copy from the previous frame */
+                for (i = 0; i < 4; i++) {
+                    for (j = 0; j < 4; j++) {
+                        s->frame.data[0][iy[i] + j] =
+                            s->prev_frame.data[0][iy[i] + j];
+                    }
+                }
+                for (i = 0; i < 2; i++) {
+                    for (j = 0; j < 2; j++) {
+                        s->frame.data[1][iu[i] + j] =
+                            s->prev_frame.data[1][iu[i] + j];
+                        s->frame.data[2][iv[i] + j] =
+                            s->prev_frame.data[2][iv[i] + j];
+                    }
+                }
+            }
+
+            iy[0] += 4;  iy[1] += 4;
+            iy[2] += 4;  iy[3] += 4;
+            iu[0] += 2;  iu[1] += 2;
+            iv[0] += 2;  iv[1] += 2;
+        }
+    }
+
+    return 0;
+}
+
+static int cinepak_decode_strip (CinepakContext *s,
+                                 cvid_strip_t *strip, uint8_t *data, int size)
+{
+    uint8_t *eod = (data + size);
+    int      chunk_id, chunk_size;
+
+    /* coordinate sanity checks */
+    if (strip->x1 >= s->avctx->width  || strip->x2 > s->avctx->width  ||
+        strip->y1 >= s->avctx->height || strip->y2 > s->avctx->height ||
+        strip->x1 >= strip->x2        || strip->y1 >= strip->y2)
+        return -1;
+
+    while ((data + 4) <= eod) {
+        chunk_id   = BE_16 (&data[0]);
+        chunk_size = BE_16 (&data[2]) - 4;
+        data      += 4;
+        chunk_size = ((data + chunk_size) > eod) ? (eod - data) : chunk_size;
+
+        switch (chunk_id) {
+
+        case 0x2000:
+        case 0x2100:
+        case 0x2400:
+        case 0x2500:
+            cinepak_decode_codebook (strip->v4_codebook, chunk_id, 
+                chunk_size, data);
+            break;
+
+        case 0x2200:
+        case 0x2300:
+        case 0x2600:
+        case 0x2700:
+            cinepak_decode_codebook (strip->v1_codebook, chunk_id, 
+                chunk_size, data);
+            break;
+
+        case 0x3000:
+        case 0x3100:
+        case 0x3200:
+            return cinepak_decode_vectors (s, strip, chunk_id, 
+                chunk_size, data);
+        }
+
+        data += chunk_size;
+    }
+
+    return -1;
+}
+
+static int cinepak_decode (CinepakContext *s)
+{
+    uint8_t      *eod = (s->data + s->size);
+    int           i, result, strip_size, frame_flags, num_strips;
+    int           y0 = 0;
+
+    if (s->size < 10)
+        return -1;
+
+    frame_flags = s->data[0];
+    num_strips  = BE_16 (&s->data[8]);
+    s->data    += 10;
+
+    if (num_strips > MAX_STRIPS)
+        num_strips = MAX_STRIPS;
+
+    for (i=0; i < num_strips; i++) {
+        if ((s->data + 12) > eod)
+            return -1;
+
+        s->strips[i].id = BE_16 (s->data);
+        s->strips[i].y1 = y0;
+        s->strips[i].x1 = 0;
+        s->strips[i].y2 = y0 + BE_16 (&s->data[8]);
+        s->strips[i].x2 = s->avctx->width;
+
+        strip_size = BE_16 (&s->data[2]) - 12;
+        s->data   += 12;
+        strip_size = ((s->data + strip_size) > eod) ? (eod - s->data) : strip_size;
+
+        if ((i > 0) && !(frame_flags & 0x01)) {
+            memcpy (s->strips[i].v4_codebook, s->strips[i-1].v4_codebook,
+                sizeof(s->strips[i].v4_codebook));
+            memcpy (s->strips[i].v1_codebook, s->strips[i-1].v1_codebook,
+                sizeof(s->strips[i].v1_codebook));
+        }
+
+        result = cinepak_decode_strip (s, &s->strips[i], s->data, strip_size);
+
+        if (result != 0)
+            return result;
+
+        s->data += strip_size;
+        y0    = s->strips[i].y2;
+    }
+    return 0;
+}
+
+static int cinepak_decode_init(AVCodecContext *avctx)
+{
+    CinepakContext *s = (CinepakContext *)avctx->priv_data;
+/*
+    int i;
+    unsigned char r, g, b;
+    unsigned char *raw_palette;
+    unsigned int *palette32;
+*/
+
+    s->avctx = avctx;
+
+// check for paletted data
+s->palette_video = 0;
+
+
+    avctx->pix_fmt = PIX_FMT_YUV420P;
+    avctx->has_b_frames = 0;
+    dsputil_init(&s->dsp, avctx);
+
+    s->frame.data[0] = s->prev_frame.data[0] = NULL;
+
+    return 0;
+}
+
+static int cinepak_decode_frame(AVCodecContext *avctx,
+                                void *data, int *data_size,
+                                uint8_t *buf, int buf_size)
+{
+    CinepakContext *s = (CinepakContext *)avctx->priv_data;
+
+    s->data = buf;
+    s->size = buf_size;
+
+    if (avctx->get_buffer(avctx, &s->frame)) {
+        printf ("  Cinepak: get_buffer() failed\n");
+        return -1;
+    }
+
+    cinepak_decode(s);
+
+    if (s->prev_frame.data[0])
+        avctx->release_buffer(avctx, &s->prev_frame);
+
+    /* shuffle frames */
+    s->prev_frame = s->frame;
+
+    *data_size = sizeof(AVFrame);
+    *(AVFrame*)data = s->frame;
+
+    /* report that the buffer was completely consumed */
+    return buf_size;
+}
+
+static int cinepak_decode_end(AVCodecContext *avctx)
+{
+    CinepakContext *s = (CinepakContext *)avctx->priv_data;
+
+    if (s->prev_frame.data[0])
+        avctx->release_buffer(avctx, &s->prev_frame);
+
+    return 0;
+}
+
+AVCodec cinepak_decoder = {
+    "cinepak",
+    CODEC_TYPE_VIDEO,
+    CODEC_ID_CINEPAK,
+    sizeof(CinepakContext),
+    cinepak_decode_init,
+    NULL,
+    cinepak_decode_end,
+    cinepak_decode_frame,
+    CODEC_CAP_DR1,
+};

libavcodec/msrle.c

@@ -0,0 +1,219 @@
+/*
+ * Micrsoft RLE Video Decoder
+ * Copyright (C) 2003 the ffmpeg project
+ *
+ * This library 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 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/**
+ * @file msrle.c
+ * MS RLE Video Decoder by Mike Melanson (melanson@pcisys.net)
+ * For more information about the MS RLE format, visit:
+ *   http://www.pcisys.net/~melanson/codecs/
+ *
+ * The MS RLE decoder outputs PAL8 colorspace data.
+ *
+ * Note that this decoder expects the palette colors from the end of the
+ * BITMAPINFO header passed through extradata.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "common.h"
+#include "avcodec.h"
+#include "dsputil.h"
+
+typedef struct MsrleContext {
+    AVCodecContext *avctx;
+    AVFrame frame;
+    AVFrame prev_frame;
+
+    unsigned char *buf;
+    int size;
+
+    unsigned int palette[256];
+} MsrleContext;
+
+#define FETCH_NEXT_STREAM_BYTE() \
+    if (stream_ptr >= s->size) \
+    { \
+      printf(" MS RLE: stream ptr just went out of bounds (1)\n"); \
+      return; \
+    } \
+    stream_byte = s->buf[stream_ptr++];
+
+static void msrle_decode_pal8(MsrleContext *s)
+{
+    int stream_ptr = 0;
+    unsigned char rle_code;
+    unsigned char extra_byte;
+    unsigned char stream_byte;
+    int pixel_ptr = 0;
+    int row_dec = s->frame.linesize[0];
+    int row_ptr = (s->avctx->height - 1) * row_dec;
+    int frame_size = row_dec * s->avctx->height;
+
+    while (row_ptr >= 0) {
+        FETCH_NEXT_STREAM_BYTE();
+        rle_code = stream_byte;
+        if (rle_code == 0) {
+            /* fetch the next byte to see how to handle escape code */
+            FETCH_NEXT_STREAM_BYTE();
+            if (stream_byte == 0) {
+                /* line is done, goto the next one */
+                row_ptr -= row_dec;
+                pixel_ptr = 0;
+            } else if (stream_byte == 1) {
+                /* decode is done */
+                return;
+            } else if (stream_byte == 2) {
+                /* reposition frame decode coordinates */
+                FETCH_NEXT_STREAM_BYTE();
+                pixel_ptr += stream_byte;
+                FETCH_NEXT_STREAM_BYTE();
+                row_ptr -= stream_byte * row_dec;
+            } else {
+                /* copy pixels from encoded stream */
+                if ((row_ptr + pixel_ptr + stream_byte > frame_size) ||
+                    (row_ptr < 0)) {
+                    printf(" MS RLE: frame ptr just went out of bounds (1)\n");
+                    return;
+                }
+
+                rle_code = stream_byte;
+                extra_byte = stream_byte & 0x01;
+                if (stream_ptr + rle_code + extra_byte > s->size) {
+                    printf(" MS RLE: stream ptr just went out of bounds (2)\n");
+                    return;
+                }
+
+                while (rle_code--) {
+                    FETCH_NEXT_STREAM_BYTE();
+                    s->frame.data[0][row_ptr + pixel_ptr] = stream_byte;
+                    pixel_ptr++;
+                }
+
+                /* if the RLE code is odd, skip a byte in the stream */
+                if (extra_byte)
+                    stream_ptr++;
+            }
+        } else {
+            /* decode a run of data */
+            if ((row_ptr + pixel_ptr + stream_byte > frame_size) ||
+                (row_ptr < 0)) {
+                printf(" MS RLE: frame ptr just went out of bounds (2)\n");
+                return;
+            }
+
+            FETCH_NEXT_STREAM_BYTE();
+
+            while(rle_code--) {
+                s->frame.data[0][row_ptr + pixel_ptr] = stream_byte;
+                pixel_ptr++;
+            }
+        }
+    }
+
+    /* make the palette available */
+    memcpy(s->frame.data[1], s->palette, 256 * 4);
+
+    /* one last sanity check on the way out */
+    if (stream_ptr < s->size)
+        printf(" MS RLE: ended frame decode with bytes left over (%d < %d)\n",
+            stream_ptr, s->size);
+}
+
+static int msrle_decode_init(AVCodecContext *avctx)
+{
+    MsrleContext *s = (MsrleContext *)avctx->priv_data;
+    int i, j;
+    unsigned char *palette;
+
+    s->avctx = avctx;
+
+    avctx->pix_fmt = PIX_FMT_PAL8;
+    avctx->has_b_frames = 0;
+    s->frame.data[0] = s->prev_frame.data[0] = NULL;
+
+    /* convert palette */
+    palette = (unsigned char *)s->avctx->extradata;
+    memset (s->palette, 0, 256 * 4);
+    for (i = 0, j = 0; i < s->avctx->extradata_size / 4; i++, j += 4)
+        s->palette[i] = 
+            (palette[j + 2] << 16) |
+            (palette[j + 1] <<  8) |
+            (palette[j + 0] <<  0);
+
+    return 0;
+}
+
+static int msrle_decode_frame(AVCodecContext *avctx,
+                              void *data, int *data_size,
+                              uint8_t *buf, int buf_size)
+{
+    MsrleContext *s = (MsrleContext *)avctx->priv_data;
+
+    s->buf = buf;
+    s->size = buf_size;
+
+    if (avctx->get_buffer(avctx, &s->frame)) {
+        printf ("  MS RLE: get_buffer() failed\n");
+        return -1;
+    }
+
+    /* grossly inefficient, but...oh well */
+    memcpy(s->frame.data[0], s->prev_frame.data[0], 
+        s->frame.linesize[0] * s->avctx->height);
+
+    msrle_decode_pal8(s);
+
+    if (s->frame.data[0])
+        avctx->release_buffer(avctx, &s->frame);
+
+    /* shuffle frames */
+    s->prev_frame = s->frame;
+
+    *data_size = sizeof(AVFrame);
+    *(AVFrame*)data = s->frame;
+
+    /* report that the buffer was completely consumed */
+    return buf_size;
+}
+
+static int msrle_decode_end(AVCodecContext *avctx)
+{
+    MsrleContext *s = (MsrleContext *)avctx->priv_data;
+
+    /* release the last frame */
+    if (s->prev_frame.data[0])
+        avctx->release_buffer(avctx, &s->prev_frame);
+
+    return 0;
+}
+
+AVCodec msrle_decoder = {
+    "msrle",
+    CODEC_TYPE_VIDEO,
+    CODEC_ID_MSRLE,
+    sizeof(MsrleContext),
+    msrle_decode_init,
+    NULL,
+    msrle_decode_end,
+    msrle_decode_frame,
+    CODEC_CAP_DR1,
+};

libavcodec/msvideo1.c

@@ -0,0 +1,378 @@
+/*
+ * Microsoft Video-1 Decoder
+ * Copyright (C) 2003 the ffmpeg project
+ *
+ * This library 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 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+/**
+ * @file msvideo1.c
+ * Microsoft Video-1 Decoder by Mike Melanson (melanson@pcisys.net)
+ * For more information about the MS Video-1 format, visit:
+ *   http://www.pcisys.net/~melanson/codecs/
+ *
+ * This decoder outputs either PAL8 or RGB555 data, depending on the
+ * whether a RGB palette was passed through via extradata; if the extradata
+ * is present, then the data is PAL8; RGB555 otherwise.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "common.h"
+#include "avcodec.h"
+#include "dsputil.h"
+
+#define PALETTE_COUNT 256
+#define LE_16(x)  ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
+#define CHECK_STREAM_PTR(n) \
+  if ((stream_ptr + n) > s->size ) { \
+    printf (" MS Video-1 warning: stream_ptr out of bounds (%d >= %d)\n", \
+      stream_ptr + n, s->size); \
+    return; \
+  }
+
+#define COPY_PREV_BLOCK() \
+    pixel_ptr = block_ptr; \
+    for (pixel_y = 0; pixel_y < 4; pixel_y++) { \
+        for (pixel_x = 0; pixel_x < 4; pixel_x++, pixel_ptr++) \
+            pixels[pixel_ptr] = prev_pixels[pixel_ptr]; \
+        pixel_ptr -= row_dec; \
+    }
+
+typedef struct Msvideo1Context {
+
+    AVCodecContext *avctx;
+    DSPContext dsp;
+    AVFrame frame;
+    AVFrame prev_frame;
+
+    unsigned char *buf;
+    int size;
+
+    int mode_8bit;  /* if it's not 8-bit, it's 16-bit */
+    unsigned char palette[PALETTE_COUNT * 4];
+
+} Msvideo1Context;
+
+static int msvideo1_decode_init(AVCodecContext *avctx)
+{
+    Msvideo1Context *s = (Msvideo1Context *)avctx->priv_data;
+    int i;
+    unsigned char r, g, b;
+    unsigned char *raw_palette;
+    unsigned int *palette32;
+
+    s->avctx = avctx;
+
+    /* figure out the colorspace based on the presence of a palette in
+     * extradata */
+    if (s->avctx->extradata_size) {
+        s->mode_8bit = 1;
+        /* load up the palette */
+        palette32 = (unsigned int *)s->palette;
+        raw_palette = (unsigned char *)s->avctx->extradata;
+        for (i = 0; i < s->avctx->extradata_size / 4; i++) {
+            b = *raw_palette++;
+            g = *raw_palette++;
+            r = *raw_palette++;
+            raw_palette++;
+            palette32[i] = (r << 16) | (g << 8) | (b);
+        }
+        avctx->pix_fmt = PIX_FMT_PAL8;
+    } else {
+        s->mode_8bit = 0;
+        avctx->pix_fmt = PIX_FMT_RGB555;
+    }
+
+    avctx->has_b_frames = 0;
+    dsputil_init(&s->dsp, avctx);
+
+    s->frame.data[0] = s->prev_frame.data[0] = NULL;
+
+    return 0;
+}
+
+static void msvideo1_decode_8bit(Msvideo1Context *s)
+{
+    int block_ptr, pixel_ptr;
+    int total_blocks;
+    int pixel_x, pixel_y;  /* pixel width and height iterators */
+    int block_x, block_y;  /* block width and height iterators */
+    int blocks_wide, blocks_high;  /* width and height in 4x4 blocks */
+    int block_inc;
+    int row_dec;
+
+    /* decoding parameters */
+    int stream_ptr;
+    unsigned char byte_a, byte_b;
+    unsigned short flags;
+    int skip_blocks;
+    unsigned char colors[8];
+    unsigned char *pixels = s->frame.data[0];
+    unsigned char *prev_pixels = s->prev_frame.data[0];
+    int stride = s->frame.linesize[0];
+
+    stream_ptr = 0;
+    skip_blocks = 0;
+    blocks_wide = s->avctx->width / 4;
+    blocks_high = s->avctx->height / 4;
+    total_blocks = blocks_wide * blocks_high;
+    block_inc = 4;
+    row_dec = stride + 4;
+
+    for (block_y = blocks_high; block_y > 0; block_y--) {
+        block_ptr = ((block_y * 4) - 1) * stride;
+        for (block_x = blocks_wide; block_x > 0; block_x--) {
+            /* check if this block should be skipped */
+            if (skip_blocks) {
+                COPY_PREV_BLOCK();
+                block_ptr += block_inc;
+                skip_blocks--;
+                total_blocks--;
+                continue;
+            }
+
+            pixel_ptr = block_ptr;
+
+            /* get the next two bytes in the encoded data stream */
+            CHECK_STREAM_PTR(2);
+            byte_a = s->buf[stream_ptr++];
+            byte_b = s->buf[stream_ptr++];
+
+            /* check if the decode is finished */
+            if ((byte_a == 0) && (byte_b == 0) && (total_blocks == 0))
+                return;
+            else if ((byte_b & 0xFC) == 0x84) {
+                /* skip code, but don't count the current block */
+                skip_blocks = ((byte_b - 0x84) << 8) + byte_a - 1;
+                COPY_PREV_BLOCK();
+            } else if (byte_b < 0x80) {
+                /* 2-color encoding */
+                flags = (byte_b << 8) | byte_a;
+
+                CHECK_STREAM_PTR(2);
+                colors[0] = s->buf[stream_ptr++];
+                colors[1] = s->buf[stream_ptr++];
+
+                for (pixel_y = 0; pixel_y < 4; pixel_y++) {
+                    for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1)
+                        pixels[pixel_ptr++] = colors[(flags & 0x1) ^ 1];
+                    pixel_ptr -= row_dec;
+                }
+            } else if (byte_b >= 0x90) {
+                /* 8-color encoding */
+                flags = (byte_b << 8) | byte_a;
+
+                CHECK_STREAM_PTR(8);
+                memcpy(colors, &s->buf[stream_ptr], 8);
+                stream_ptr += 8;
+
+                for (pixel_y = 0; pixel_y < 4; pixel_y++) {
+                    for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1)
+                        pixels[pixel_ptr++] = 
+                            colors[((pixel_y & 0x2) << 1) + 
+                                (pixel_x & 0x2) + ((flags & 0x1) ^ 1)];
+                    pixel_ptr -= row_dec;
+                }
+            } else {
+                /* 1-color encoding */
+                colors[0] = byte_a;
+
+                for (pixel_y = 0; pixel_y < 4; pixel_y++) {
+                    for (pixel_x = 0; pixel_x < 4; pixel_x++)
+                        pixels[pixel_ptr++] = colors[0];
+                    pixel_ptr -= row_dec;
+                }
+            }
+
+            block_ptr += block_inc;
+            total_blocks--;
+        }
+    }
+
+    /* make the palette available on the way out */
+    if (s->avctx->pix_fmt == PIX_FMT_PAL8)
+        memcpy(s->frame.data[1], s->palette, PALETTE_COUNT * 4);
+}
+
+static void msvideo1_decode_16bit(Msvideo1Context *s)
+{
+    int block_ptr, pixel_ptr;
+    int total_blocks;
+    int pixel_x, pixel_y;  /* pixel width and height iterators */
+    int block_x, block_y;  /* block width and height iterators */
+    int blocks_wide, blocks_high;  /* width and height in 4x4 blocks */
+    int block_inc;
+    int row_dec;
+
+    /* decoding parameters */
+    int stream_ptr;
+    unsigned char byte_a, byte_b;
+    unsigned short flags;
+    int skip_blocks;
+    unsigned short colors[8];
+    unsigned short *pixels = (unsigned short *)s->frame.data[0];
+    unsigned short *prev_pixels = (unsigned short *)s->prev_frame.data[0];
+    int stride = s->frame.linesize[0] / 2;
+
+    stream_ptr = 0;
+    skip_blocks = 0;
+    blocks_wide = s->avctx->width / 4;
+    blocks_high = s->avctx->height / 4;
+    total_blocks = blocks_wide * blocks_high;
+    block_inc = 4;
+    row_dec = stride + 4;
+
+    for (block_y = blocks_high; block_y > 0; block_y--) {
+        block_ptr = ((block_y * 4) - 1) * stride;
+        for (block_x = blocks_wide; block_x > 0; block_x--) {
+            /* check if this block should be skipped */
+            if (skip_blocks) {
+                COPY_PREV_BLOCK();
+                block_ptr += block_inc;
+                skip_blocks--;
+                total_blocks--;
+                continue;
+            }
+
+            pixel_ptr = block_ptr;
+
+            /* get the next two bytes in the encoded data stream */
+            CHECK_STREAM_PTR(2);
+            byte_a = s->buf[stream_ptr++];
+            byte_b = s->buf[stream_ptr++];
+
+            /* check if the decode is finished */
+            if ((byte_a == 0) && (byte_b == 0) && (total_blocks == 0)) {
+                return;
+            } else if ((byte_b & 0xFC) == 0x84) {
+                /* skip code, but don't count the current block */
+                skip_blocks = ((byte_b - 0x84) << 8) + byte_a - 1;
+                COPY_PREV_BLOCK();
+            } else if (byte_b < 0x80) {
+                /* 2- or 8-color encoding modes */
+                flags = (byte_b << 8) | byte_a;
+
+                CHECK_STREAM_PTR(4);
+                colors[0] = LE_16(&s->buf[stream_ptr]);
+                stream_ptr += 2;
+                colors[1] = LE_16(&s->buf[stream_ptr]);
+                stream_ptr += 2;
+
+                if (colors[0] & 0x8000) {
+                    /* 8-color encoding */
+                    CHECK_STREAM_PTR(12);
+                    colors[2] = LE_16(&s->buf[stream_ptr]);
+                    stream_ptr += 2;
+                    colors[3] = LE_16(&s->buf[stream_ptr]);
+                    stream_ptr += 2;
+                    colors[4] = LE_16(&s->buf[stream_ptr]);
+                    stream_ptr += 2;
+                    colors[5] = LE_16(&s->buf[stream_ptr]);
+                    stream_ptr += 2;
+                    colors[6] = LE_16(&s->buf[stream_ptr]);
+                    stream_ptr += 2;
+                    colors[7] = LE_16(&s->buf[stream_ptr]);
+                    stream_ptr += 2;
+
+                    for (pixel_y = 0; pixel_y < 4; pixel_y++) {
+                        for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1)
+                            pixels[pixel_ptr++] = 
+                                colors[((pixel_y & 0x2) << 1) + 
+                                    (pixel_x & 0x2) + ((flags & 0x1) ^ 1)];
+                        pixel_ptr -= row_dec;
+                    }
+                } else {
+                    /* 2-color encoding */
+                    for (pixel_y = 0; pixel_y < 4; pixel_y++) {
+                        for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1)
+                            pixels[pixel_ptr++] = colors[(flags & 0x1) ^ 1];
+                        pixel_ptr -= row_dec;
+                    }
+                }
+            } else {
+                /* otherwise, it's a 1-color block */
+                colors[0] = (byte_b << 8) | byte_a;
+
+                for (pixel_y = 0; pixel_y < 4; pixel_y++) {
+                    for (pixel_x = 0; pixel_x < 4; pixel_x++)
+                        pixels[pixel_ptr++] = colors[0];
+                    pixel_ptr -= row_dec;
+                }
+            }
+
+            block_ptr += block_inc;
+            total_blocks--;
+        }
+    }
+}
+
+static int msvideo1_decode_frame(AVCodecContext *avctx,
+                                void *data, int *data_size,
+                                uint8_t *buf, int buf_size)
+{
+    Msvideo1Context *s = (Msvideo1Context *)avctx->priv_data;
+
+    s->buf = buf;
+    s->size = buf_size;
+
+    if (avctx->get_buffer(avctx, &s->frame)) {
+        printf ("  MS Video-1 Video: get_buffer() failed\n");
+        return -1;
+    }
+
+    if (s->mode_8bit)
+        msvideo1_decode_8bit(s);
+    else
+        msvideo1_decode_16bit(s);
+
+    if (s->prev_frame.data[0])
+        avctx->release_buffer(avctx, &s->prev_frame);
+
+    /* shuffle frames */
+    s->prev_frame = s->frame;
+
+    *data_size = sizeof(AVFrame);
+    *(AVFrame*)data = s->frame;
+
+    /* report that the buffer was completely consumed */
+    return buf_size;
+}
+
+static int msvideo1_decode_end(AVCodecContext *avctx)
+{
+    Msvideo1Context *s = (Msvideo1Context *)avctx->priv_data;
+
+    if (s->prev_frame.data[0])
+        avctx->release_buffer(avctx, &s->prev_frame);
+
+    return 0;
+}
+
+AVCodec msvideo1_decoder = {
+    "msvideo1",
+    CODEC_TYPE_VIDEO,
+    CODEC_ID_MSVIDEO1,
+    sizeof(Msvideo1Context),
+    msvideo1_decode_init,
+    NULL,
+    msvideo1_decode_end,
+    msvideo1_decode_frame,
+    CODEC_CAP_DR1,
+};