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-rw-r--r--contrib/ffmpeg/libavformat/mm.c212
1 files changed, 0 insertions, 212 deletions
diff --git a/contrib/ffmpeg/libavformat/mm.c b/contrib/ffmpeg/libavformat/mm.c
deleted file mode 100644
index 443b70929..000000000
--- a/contrib/ffmpeg/libavformat/mm.c
+++ /dev/null
@@ -1,212 +0,0 @@
-/*
- * American Laser Games MM Format Demuxer
- * Copyright (c) 2006 Peter Ross
- *
- * 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 St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file mm.c
- * American Laser Games MM Format Demuxer
- * by Peter Ross (suxen_drol at hotmail dot com)
- *
- * The MM format was used by IBM-PC ports of ALG's "arcade shooter" games,
- * including Mad Dog McCree and Crime Patrol.
- *
- * Technical details here:
- * http://wiki.multimedia.cx/index.php?title=American_Laser_Games_MM
- */
-
-#include "avformat.h"
-
-#define MM_PREAMBLE_SIZE 6
-
-#define MM_TYPE_HEADER 0x0
-#define MM_TYPE_INTER 0x5
-#define MM_TYPE_INTRA 0x8
-#define MM_TYPE_INTRA_HH 0xc
-#define MM_TYPE_INTER_HH 0xd
-#define MM_TYPE_INTRA_HHV 0xe
-#define MM_TYPE_INTER_HHV 0xf
-#define MM_TYPE_AUDIO 0x15
-#define MM_TYPE_PALETTE 0x31
-
-#define MM_HEADER_LEN_V 0x16 /* video only */
-#define MM_HEADER_LEN_AV 0x18 /* video + audio */
-
-#define MM_PALETTE_COUNT 128
-#define MM_PALETTE_SIZE (MM_PALETTE_COUNT*3)
-
-typedef struct {
- AVPaletteControl palette_control;
- unsigned int audio_pts, video_pts;
-} MmDemuxContext;
-
-static int mm_probe(AVProbeData *p)
-{
- /* the first chunk is always the header */
- if (p->buf_size < MM_PREAMBLE_SIZE)
- return 0;
- if (AV_RL16(&p->buf[0]) != MM_TYPE_HEADER)
- return 0;
- if (AV_RL32(&p->buf[2]) != MM_HEADER_LEN_V && AV_RL32(&p->buf[2]) != MM_HEADER_LEN_AV)
- return 0;
-
- /* only return half certainty since this check is a bit sketchy */
- return AVPROBE_SCORE_MAX / 2;
-}
-
-static int mm_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
-{
- MmDemuxContext *mm = (MmDemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
- AVStream *st;
-
- unsigned int type, length;
- unsigned int frame_rate, width, height;
-
- type = get_le16(pb);
- length = get_le32(pb);
-
- if (type != MM_TYPE_HEADER)
- return AVERROR_INVALIDDATA;
-
- /* read header */
- get_le16(pb); /* total number of chunks */
- frame_rate = get_le16(pb);
- get_le16(pb); /* ibm-pc video bios mode */
- width = get_le16(pb);
- height = get_le16(pb);
- url_fseek(pb, length - 10, SEEK_CUR); /* unknown data */
-
- /* video stream */
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
- st->codec->codec_type = CODEC_TYPE_VIDEO;
- st->codec->codec_id = CODEC_ID_MMVIDEO;
- st->codec->codec_tag = 0; /* no fourcc */
- st->codec->width = width;
- st->codec->height = height;
- st->codec->palctrl = &mm->palette_control;
- av_set_pts_info(st, 64, 1, frame_rate);
-
- /* audio stream */
- if (length == MM_HEADER_LEN_AV) {
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
- st->codec->codec_type = CODEC_TYPE_AUDIO;
- st->codec->codec_tag = 0; /* no fourcc */
- st->codec->codec_id = CODEC_ID_PCM_U8;
- st->codec->channels = 1;
- st->codec->sample_rate = 8000;
- av_set_pts_info(st, 64, 1, 8000); /* 8000 hz */
- }
-
- mm->palette_control.palette_changed = 0;
- mm->audio_pts = 0;
- mm->video_pts = 0;
- return 0;
-}
-
-static int mm_read_packet(AVFormatContext *s,
- AVPacket *pkt)
-{
- MmDemuxContext *mm = (MmDemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
- unsigned char preamble[MM_PREAMBLE_SIZE];
- unsigned char pal[MM_PALETTE_SIZE];
- unsigned int type, length;
- int i;
-
- while(1) {
-
- if (get_buffer(pb, preamble, MM_PREAMBLE_SIZE) != MM_PREAMBLE_SIZE) {
- return AVERROR_IO;
- }
-
- type = AV_RL16(&preamble[0]);
- length = AV_RL16(&preamble[2]);
-
- switch(type) {
- case MM_TYPE_PALETTE :
- url_fseek(pb, 4, SEEK_CUR); /* unknown data */
- if (get_buffer(pb, pal, MM_PALETTE_SIZE) != MM_PALETTE_SIZE)
- return AVERROR_IO;
- url_fseek(pb, length - (4 + MM_PALETTE_SIZE), SEEK_CUR);
-
- for (i=0; i<MM_PALETTE_COUNT; i++) {
- int r = pal[i*3 + 0];
- int g = pal[i*3 + 1];
- int b = pal[i*3 + 2];
- mm->palette_control.palette[i] = (r << 16) | (g << 8) | (b);
- /* repeat palette, where each components is multiplied by four */
- mm->palette_control.palette[i+128] = (r << 18) | (g << 10) | (b<<2);
- }
- mm->palette_control.palette_changed = 1;
- break;
-
- case MM_TYPE_INTER :
- case MM_TYPE_INTRA :
- case MM_TYPE_INTRA_HH :
- case MM_TYPE_INTER_HH :
- case MM_TYPE_INTRA_HHV :
- case MM_TYPE_INTER_HHV :
- /* output preamble + data */
- if (av_new_packet(pkt, length + MM_PREAMBLE_SIZE))
- return AVERROR_NOMEM;
- memcpy(pkt->data, preamble, MM_PREAMBLE_SIZE);
- if (get_buffer(pb, pkt->data + MM_PREAMBLE_SIZE, length) != length)
- return AVERROR_IO;
- pkt->size = length + MM_PREAMBLE_SIZE;
- pkt->stream_index = 0;
- pkt->pts = mm->video_pts++;
- return 0;
-
- case MM_TYPE_AUDIO :
- if (av_get_packet(&s->pb, pkt, length)<0)
- return AVERROR_NOMEM;
- pkt->size = length;
- pkt->stream_index = 1;
- pkt->pts = mm->audio_pts++;
- return 0;
-
- default :
- av_log(NULL, AV_LOG_INFO, "mm: unknown chunk type 0x%x\n", type);
- url_fseek(pb, length, SEEK_CUR);
- }
- }
-
- return 0;
-}
-
-static int mm_read_close(AVFormatContext *s)
-{
- return 0;
-}
-
-AVInputFormat mm_demuxer = {
- "mm",
- "American Laser Games MM format",
- sizeof(MmDemuxContext),
- mm_probe,
- mm_read_header,
- mm_read_packet,
- mm_read_close,
-};
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