X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fsegafilm.c;h=23eea6495624b7e29c1e77e4b7da6b6f98a27517;hb=15c71dfd03a699a9ce503bf061d58b88ec49d860;hp=4f3e5b93396d653a4d7b10ddc8cb96cdfe46c409;hpb=c6610a216ed2948885772154a2eed696e0cb4aca;p=ffmpeg diff --git a/libavformat/segafilm.c b/libavformat/segafilm.c index 4f3e5b93396..23eea649562 100644 --- a/libavformat/segafilm.c +++ b/libavformat/segafilm.c @@ -2,20 +2,20 @@ * Sega FILM Format (CPK) Demuxer * Copyright (c) 2003 The ffmpeg Project * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav 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, + * Libav 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 + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -29,11 +29,13 @@ #include "libavutil/intreadwrite.h" #include "avformat.h" +#include "internal.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') +#define RAW_TAG MKBETAG('r', 'a', 'w', ' ') typedef struct { int stream; @@ -47,12 +49,12 @@ typedef struct FilmDemuxContext { int video_stream_index; int audio_stream_index; - enum CodecID audio_type; + enum AVCodecID audio_type; unsigned int audio_samplerate; unsigned int audio_bits; unsigned int audio_channels; - enum CodecID video_type; + enum AVCodecID video_type; unsigned int sample_count; film_sample *sample_table; unsigned int current_sample; @@ -73,11 +75,10 @@ static int film_probe(AVProbeData *p) return AVPROBE_SCORE_MAX; } -static int film_read_header(AVFormatContext *s, - AVFormatParameters *ap) +static int film_read_header(AVFormatContext *s) { FilmDemuxContext *film = s->priv_data; - ByteIOContext *pb = s->pb; + AVIOContext *pb = s->pb; AVStream *st; unsigned char scratch[256]; int i; @@ -89,7 +90,7 @@ static int film_read_header(AVFormatContext *s, film->stereo_buffer_size = 0; /* load the main FILM header */ - if (get_buffer(pb, scratch, 16) != 16) + if (avio_read(pb, scratch, 16) != 16) return AVERROR(EIO); data_offset = AV_RB32(&scratch[4]); film->version = AV_RB32(&scratch[8]); @@ -97,39 +98,47 @@ static int film_read_header(AVFormatContext *s, /* load the FDSC chunk */ if (film->version == 0) { /* special case for Lemmings .film files; 20-byte header */ - if (get_buffer(pb, scratch, 20) != 20) + if (avio_read(pb, scratch, 20) != 20) return AVERROR(EIO); /* make some assumptions about the audio parameters */ - film->audio_type = CODEC_ID_PCM_S8; + film->audio_type = AV_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) + if (avio_read(pb, scratch, 32) != 32) return AVERROR(EIO); 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 = CODEC_ID_NONE; + if (scratch[23] == 2) + film->audio_type = AV_CODEC_ID_ADPCM_ADX; + else if (film->audio_channels > 0) { + if (film->audio_bits == 8) + film->audio_type = AV_CODEC_ID_PCM_S8; + else if (film->audio_bits == 16) + film->audio_type = AV_CODEC_ID_PCM_S16BE; + else + film->audio_type = AV_CODEC_ID_NONE; + } else + film->audio_type = AV_CODEC_ID_NONE; } 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 = CODEC_ID_NONE; + film->video_type = AV_CODEC_ID_CINEPAK; + } else if (AV_RB32(&scratch[8]) == RAW_TAG) { + film->video_type = AV_CODEC_ID_RAWVIDEO; + } else { + film->video_type = AV_CODEC_ID_NONE; + } /* initialize the decoder streams */ if (film->video_type) { - st = av_new_stream(s, 0); + st = avformat_new_stream(s, NULL); if (!st) return AVERROR(ENOMEM); film->video_stream_index = st->index; @@ -138,10 +147,19 @@ static int film_read_header(AVFormatContext *s, st->codec->codec_tag = 0; /* no fourcc */ st->codec->width = AV_RB32(&scratch[16]); st->codec->height = AV_RB32(&scratch[12]); + + if (film->video_type == AV_CODEC_ID_RAWVIDEO) { + if (scratch[20] == 24) { + st->codec->pix_fmt = PIX_FMT_RGB24; + } else { + av_log(s, AV_LOG_ERROR, "raw video is using unhandled %dbpp\n", scratch[20]); + return -1; + } + } } if (film->audio_type) { - st = av_new_stream(s, 0); + st = avformat_new_stream(s, NULL); if (!st) return AVERROR(ENOMEM); film->audio_stream_index = st->index; @@ -149,16 +167,24 @@ static int film_read_header(AVFormatContext *s, st->codec->codec_id = film->audio_type; st->codec->codec_tag = 1; st->codec->channels = film->audio_channels; - st->codec->bits_per_coded_sample = film->audio_bits; st->codec->sample_rate = film->audio_samplerate; + + if (film->audio_type == AV_CODEC_ID_ADPCM_ADX) { + st->codec->bits_per_coded_sample = 18 * 8 / 32; + st->codec->block_align = st->codec->channels * 18; + st->need_parsing = AVSTREAM_PARSE_FULL; + } else { + st->codec->bits_per_coded_sample = film->audio_bits; + st->codec->block_align = st->codec->channels * + st->codec->bits_per_coded_sample / 8; + } + st->codec->bit_rate = st->codec->channels * st->codec->sample_rate * st->codec->bits_per_coded_sample; - st->codec->block_align = st->codec->channels * - st->codec->bits_per_coded_sample / 8; } /* load the sample table */ - if (get_buffer(pb, scratch, 16) != 16) + if (avio_read(pb, scratch, 16) != 16) return AVERROR(EIO); if (AV_RB32(&scratch[0]) != STAB_TAG) return AVERROR_INVALIDDATA; @@ -167,14 +193,21 @@ static int film_read_header(AVFormatContext *s, if(film->sample_count >= UINT_MAX / sizeof(film_sample)) return -1; film->sample_table = av_malloc(film->sample_count * sizeof(film_sample)); + if (!film->sample_table) + return AVERROR(ENOMEM); - for(i=0; inb_streams; i++) - av_set_pts_info(s->streams[i], 33, 1, film->base_clock); + for (i = 0; i < s->nb_streams; i++) { + st = s->streams[i]; + if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) + avpriv_set_pts_info(st, 33, 1, film->base_clock); + else + avpriv_set_pts_info(st, 64, 1, film->audio_samplerate); + } 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) { + if (avio_read(pb, scratch, 16) != 16) { av_free(film->sample_table); return AVERROR(EIO); } @@ -184,11 +217,13 @@ static int film_read_header(AVFormatContext *s, 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)); + if (film->audio_type == AV_CODEC_ID_ADPCM_ADX) + audio_frame_counter += (film->sample_table[i].sample_size * 32 / + (18 * film->audio_channels)); + else if (film->audio_type != AV_CODEC_ID_NONE) + 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; @@ -205,7 +240,7 @@ static int film_read_packet(AVFormatContext *s, AVPacket *pkt) { FilmDemuxContext *film = s->priv_data; - ByteIOContext *pb = s->pb; + AVIOContext *pb = s->pb; film_sample *sample; int ret = 0; int i; @@ -217,17 +252,18 @@ static int film_read_packet(AVFormatContext *s, sample = &film->sample_table[film->current_sample]; /* position the stream (will probably be there anyway) */ - url_fseek(pb, sample->sample_offset, SEEK_SET); + avio_seek(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); + (film->video_type == AV_CODEC_ID_CINEPAK)) { + pkt->pos= avio_tell(pb); if (av_new_packet(pkt, sample->sample_size)) return AVERROR(ENOMEM); - get_buffer(pb, pkt->data, sample->sample_size); + avio_read(pb, pkt->data, sample->sample_size); } else if ((sample->stream == film->audio_stream_index) && - (film->audio_channels == 2)) { + (film->audio_channels == 2) && + (film->audio_type != AV_CODEC_ID_ADPCM_ADX)) { /* stereo PCM needs to be interleaved */ if (av_new_packet(pkt, sample->sample_size)) @@ -238,10 +274,14 @@ static int film_read_packet(AVFormatContext *s, av_free(film->stereo_buffer); film->stereo_buffer_size = sample->sample_size; film->stereo_buffer = av_malloc(film->stereo_buffer_size); + if (!film->stereo_buffer) { + film->stereo_buffer_size = 0; + return AVERROR(ENOMEM); + } } - pkt->pos= url_ftell(pb); - ret = get_buffer(pb, film->stereo_buffer, sample->sample_size); + pkt->pos= avio_tell(pb); + ret = avio_read(pb, film->stereo_buffer, sample->sample_size); if (ret != sample->sample_size) ret = AVERROR(EIO); @@ -283,11 +323,11 @@ static int film_read_close(AVFormatContext *s) } AVInputFormat ff_segafilm_demuxer = { - "film_cpk", - NULL_IF_CONFIG_SMALL("Sega FILM/CPK format"), - sizeof(FilmDemuxContext), - film_probe, - film_read_header, - film_read_packet, - film_read_close, + .name = "film_cpk", + .long_name = NULL_IF_CONFIG_SMALL("Sega FILM / CPK"), + .priv_data_size = sizeof(FilmDemuxContext), + .read_probe = film_probe, + .read_header = film_read_header, + .read_packet = film_read_packet, + .read_close = film_read_close, };