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Diffstat (limited to 'contrib/ffmpeg/libavformat/segafilm.c')
-rw-r--r--contrib/ffmpeg/libavformat/segafilm.c295
1 files changed, 0 insertions, 295 deletions
diff --git a/contrib/ffmpeg/libavformat/segafilm.c b/contrib/ffmpeg/libavformat/segafilm.c
deleted file mode 100644
index b5375ccf7..000000000
--- a/contrib/ffmpeg/libavformat/segafilm.c
+++ /dev/null
@@ -1,295 +0,0 @@
-/*
- * Sega FILM Format (CPK) Demuxer
- * 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 segafilm.c
- * Sega FILM (.cpk) file demuxer
- * by Mike Melanson (melanson@pcisys.net)
- * For more information regarding the Sega FILM file format, visit:
- * http://www.pcisys.net/~melanson/codecs/
- */
-
-#include "avformat.h"
-
-#define FILM_TAG MKBETAG('F', 'I', 'L', 'M')
-#define FDSC_TAG MKBETAG('F', 'D', 'S', 'C')
-#define STAB_TAG MKBETAG('S', 'T', 'A', 'B')
-#define CVID_TAG MKBETAG('c', 'v', 'i', 'd')
-
-typedef struct {
- int stream;
- offset_t sample_offset;
- unsigned int sample_size;
- int64_t pts;
- int keyframe;
-} film_sample_t;
-
-typedef struct FilmDemuxContext {
- int video_stream_index;
- int audio_stream_index;
-
- unsigned int audio_type;
- unsigned int audio_samplerate;
- unsigned int audio_bits;
- unsigned int audio_channels;
-
- unsigned int video_type;
- unsigned int sample_count;
- film_sample_t *sample_table;
- unsigned int current_sample;
-
- unsigned int base_clock;
- unsigned int version;
-
- /* buffer used for interleaving stereo PCM data */
- unsigned char *stereo_buffer;
- int stereo_buffer_size;
-} FilmDemuxContext;
-
-static int film_probe(AVProbeData *p)
-{
- if (p->buf_size < 4)
- return 0;
-
- if (AV_RB32(&p->buf[0]) != FILM_TAG)
- return 0;
-
- return AVPROBE_SCORE_MAX;
-}
-
-static int film_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
-{
- FilmDemuxContext *film = (FilmDemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
- AVStream *st;
- unsigned char scratch[256];
- int i;
- unsigned int data_offset;
- unsigned int audio_frame_counter;
-
- film->sample_table = NULL;
- film->stereo_buffer = NULL;
- film->stereo_buffer_size = 0;
-
- /* load the main FILM header */
- if (get_buffer(pb, scratch, 16) != 16)
- return AVERROR_IO;
- data_offset = AV_RB32(&scratch[4]);
- film->version = AV_RB32(&scratch[8]);
-
- /* load the FDSC chunk */
- if (film->version == 0) {
- /* special case for Lemmings .film files; 20-byte header */
- if (get_buffer(pb, scratch, 20) != 20)
- return AVERROR_IO;
- /* make some assumptions about the audio parameters */
- film->audio_type = CODEC_ID_PCM_S8;
- film->audio_samplerate = 22050;
- film->audio_channels = 1;
- film->audio_bits = 8;
- } else {
- /* normal Saturn .cpk files; 32-byte header */
- if (get_buffer(pb, scratch, 32) != 32)
- return AVERROR_IO;
- film->audio_samplerate = AV_RB16(&scratch[24]);;
- film->audio_channels = scratch[21];
- film->audio_bits = scratch[22];
- if (film->audio_bits == 8)
- film->audio_type = CODEC_ID_PCM_S8;
- else if (film->audio_bits == 16)
- film->audio_type = CODEC_ID_PCM_S16BE;
- else
- film->audio_type = 0;
- }
-
- if (AV_RB32(&scratch[0]) != FDSC_TAG)
- return AVERROR_INVALIDDATA;
-
- if (AV_RB32(&scratch[8]) == CVID_TAG) {
- film->video_type = CODEC_ID_CINEPAK;
- } else
- film->video_type = 0;
-
- /* initialize the decoder streams */
- if (film->video_type) {
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
- film->video_stream_index = st->index;
- st->codec->codec_type = CODEC_TYPE_VIDEO;
- st->codec->codec_id = film->video_type;
- st->codec->codec_tag = 0; /* no fourcc */
- st->codec->width = AV_RB32(&scratch[16]);
- st->codec->height = AV_RB32(&scratch[12]);
- }
-
- if (film->audio_type) {
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
- film->audio_stream_index = st->index;
- st->codec->codec_type = CODEC_TYPE_AUDIO;
- st->codec->codec_id = film->audio_type;
- st->codec->codec_tag = 1;
- st->codec->channels = film->audio_channels;
- st->codec->bits_per_sample = film->audio_bits;
- st->codec->sample_rate = film->audio_samplerate;
- st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
- st->codec->bits_per_sample;
- st->codec->block_align = st->codec->channels *
- st->codec->bits_per_sample / 8;
- }
-
- /* load the sample table */
- if (get_buffer(pb, scratch, 16) != 16)
- return AVERROR_IO;
- if (AV_RB32(&scratch[0]) != STAB_TAG)
- return AVERROR_INVALIDDATA;
- film->base_clock = AV_RB32(&scratch[8]);
- film->sample_count = AV_RB32(&scratch[12]);
- if(film->sample_count >= UINT_MAX / sizeof(film_sample_t))
- return -1;
- film->sample_table = av_malloc(film->sample_count * sizeof(film_sample_t));
-
- for(i=0; i<s->nb_streams; i++)
- av_set_pts_info(s->streams[i], 33, 1, film->base_clock);
-
- audio_frame_counter = 0;
- for (i = 0; i < film->sample_count; i++) {
- /* load the next sample record and transfer it to an internal struct */
- if (get_buffer(pb, scratch, 16) != 16) {
- av_free(film->sample_table);
- return AVERROR_IO;
- }
- film->sample_table[i].sample_offset =
- data_offset + AV_RB32(&scratch[0]);
- film->sample_table[i].sample_size = AV_RB32(&scratch[4]);
- if (AV_RB32(&scratch[8]) == 0xFFFFFFFF) {
- film->sample_table[i].stream = film->audio_stream_index;
- film->sample_table[i].pts = audio_frame_counter;
- film->sample_table[i].pts *= film->base_clock;
- film->sample_table[i].pts /= film->audio_samplerate;
-
- audio_frame_counter += (film->sample_table[i].sample_size /
- (film->audio_channels * film->audio_bits / 8));
- } else {
- film->sample_table[i].stream = film->video_stream_index;
- film->sample_table[i].pts = AV_RB32(&scratch[8]) & 0x7FFFFFFF;
- film->sample_table[i].keyframe = (scratch[8] & 0x80) ? 0 : 1;
- }
- }
-
- film->current_sample = 0;
-
- return 0;
-}
-
-static int film_read_packet(AVFormatContext *s,
- AVPacket *pkt)
-{
- FilmDemuxContext *film = (FilmDemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
- film_sample_t *sample;
- int ret = 0;
- int i;
- int left, right;
-
- if (film->current_sample >= film->sample_count)
- return AVERROR_IO;
-
- sample = &film->sample_table[film->current_sample];
-
- /* position the stream (will probably be there anyway) */
- url_fseek(pb, sample->sample_offset, SEEK_SET);
-
- /* do a special song and dance when loading FILM Cinepak chunks */
- if ((sample->stream == film->video_stream_index) &&
- (film->video_type == CODEC_ID_CINEPAK)) {
- pkt->pos= url_ftell(pb);
- if (av_new_packet(pkt, sample->sample_size))
- return AVERROR_NOMEM;
- get_buffer(pb, pkt->data, sample->sample_size);
- } else if ((sample->stream == film->audio_stream_index) &&
- (film->audio_channels == 2)) {
- /* stereo PCM needs to be interleaved */
-
- if (av_new_packet(pkt, sample->sample_size))
- return AVERROR_NOMEM;
-
- /* make sure the interleave buffer is large enough */
- if (sample->sample_size > film->stereo_buffer_size) {
- av_free(film->stereo_buffer);
- film->stereo_buffer_size = sample->sample_size;
- film->stereo_buffer = av_malloc(film->stereo_buffer_size);
- }
-
- pkt->pos= url_ftell(pb);
- ret = get_buffer(pb, film->stereo_buffer, sample->sample_size);
- if (ret != sample->sample_size)
- ret = AVERROR_IO;
-
- left = 0;
- right = sample->sample_size / 2;
- for (i = 0; i < sample->sample_size; ) {
- if (film->audio_bits == 8) {
- pkt->data[i++] = film->stereo_buffer[left++];
- pkt->data[i++] = film->stereo_buffer[right++];
- } else {
- pkt->data[i++] = film->stereo_buffer[left++];
- pkt->data[i++] = film->stereo_buffer[left++];
- pkt->data[i++] = film->stereo_buffer[right++];
- pkt->data[i++] = film->stereo_buffer[right++];
- }
- }
- } else {
- ret= av_get_packet(pb, pkt, sample->sample_size);
- if (ret != sample->sample_size)
- ret = AVERROR_IO;
- }
-
- pkt->stream_index = sample->stream;
- pkt->pts = sample->pts;
-
- film->current_sample++;
-
- return ret;
-}
-
-static int film_read_close(AVFormatContext *s)
-{
- FilmDemuxContext *film = (FilmDemuxContext *)s->priv_data;
-
- av_free(film->sample_table);
- av_free(film->stereo_buffer);
-
- return 0;
-}
-
-AVInputFormat segafilm_demuxer = {
- "film_cpk",
- "Sega FILM/CPK format",
- sizeof(FilmDemuxContext),
- film_probe,
- film_read_header,
- film_read_packet,
- film_read_close,
-};
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