diff options
| author | Tim Redfern <tim@eclectronics.org> | 2014-02-17 13:36:38 +0000 |
|---|---|---|
| committer | Tim Redfern <tim@eclectronics.org> | 2014-02-17 13:36:38 +0000 |
| commit | 22e28216336da876e1fd17f380ce42eaf1446769 (patch) | |
| tree | 444dad3dc7e2656992d29f34f7bce31970c122a5 /ffmpeg/libavformat/dsicin.c | |
| parent | ae5e8541f6e06e64c28719467cdf366ac57aff31 (diff) | |
chasing indexing error
Diffstat (limited to 'ffmpeg/libavformat/dsicin.c')
| -rw-r--r-- | ffmpeg/libavformat/dsicin.c | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/ffmpeg/libavformat/dsicin.c b/ffmpeg/libavformat/dsicin.c deleted file mode 100644 index 4a54680..0000000 --- a/ffmpeg/libavformat/dsicin.c +++ /dev/null @@ -1,234 +0,0 @@ -/* - * Delphine Software International CIN File Demuxer - * Copyright (c) 2006 Gregory Montoir (cyx@users.sourceforge.net) - * - * 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 - * Delphine Software International CIN file demuxer - */ - -#include "libavutil/channel_layout.h" -#include "libavutil/intreadwrite.h" -#include "avformat.h" -#include "internal.h" -#include "avio_internal.h" - - -typedef struct CinFileHeader { - int video_frame_size; - int video_frame_width; - int video_frame_height; - int audio_frequency; - int audio_bits; - int audio_stereo; - int audio_frame_size; -} CinFileHeader; - -typedef struct CinFrameHeader { - int audio_frame_type; - int video_frame_type; - int pal_colors_count; - int audio_frame_size; - int video_frame_size; -} CinFrameHeader; - -typedef struct CinDemuxContext { - int audio_stream_index; - int video_stream_index; - CinFileHeader file_header; - int64_t audio_stream_pts; - int64_t video_stream_pts; - CinFrameHeader frame_header; - int audio_buffer_size; -} CinDemuxContext; - - -static int cin_probe(AVProbeData *p) -{ - /* header starts with this special marker */ - if (AV_RL32(&p->buf[0]) != 0x55AA0000) - return 0; - - /* for accuracy, check some header field values */ - if (AV_RL32(&p->buf[12]) != 22050 || p->buf[16] != 16 || p->buf[17] != 0) - return 0; - - return AVPROBE_SCORE_MAX; -} - -static int cin_read_file_header(CinDemuxContext *cin, AVIOContext *pb) { - CinFileHeader *hdr = &cin->file_header; - - if (avio_rl32(pb) != 0x55AA0000) - return AVERROR_INVALIDDATA; - - hdr->video_frame_size = avio_rl32(pb); - hdr->video_frame_width = avio_rl16(pb); - hdr->video_frame_height = avio_rl16(pb); - hdr->audio_frequency = avio_rl32(pb); - hdr->audio_bits = avio_r8(pb); - hdr->audio_stereo = avio_r8(pb); - hdr->audio_frame_size = avio_rl16(pb); - - if (hdr->audio_frequency != 22050 || hdr->audio_bits != 16 || hdr->audio_stereo != 0) - return AVERROR_INVALIDDATA; - - return 0; -} - -static int cin_read_header(AVFormatContext *s) -{ - int rc; - CinDemuxContext *cin = s->priv_data; - CinFileHeader *hdr = &cin->file_header; - AVIOContext *pb = s->pb; - AVStream *st; - - rc = cin_read_file_header(cin, pb); - if (rc) - return rc; - - cin->video_stream_pts = 0; - cin->audio_stream_pts = 0; - cin->audio_buffer_size = 0; - - /* initialize the video decoder stream */ - st = avformat_new_stream(s, NULL); - if (!st) - return AVERROR(ENOMEM); - - avpriv_set_pts_info(st, 32, 1, 12); - cin->video_stream_index = st->index; - st->codec->codec_type = AVMEDIA_TYPE_VIDEO; - st->codec->codec_id = AV_CODEC_ID_DSICINVIDEO; - st->codec->codec_tag = 0; /* no fourcc */ - st->codec->width = hdr->video_frame_width; - st->codec->height = hdr->video_frame_height; - - /* initialize the audio decoder stream */ - st = avformat_new_stream(s, NULL); - if (!st) - return AVERROR(ENOMEM); - - avpriv_set_pts_info(st, 32, 1, 22050); - cin->audio_stream_index = st->index; - st->codec->codec_type = AVMEDIA_TYPE_AUDIO; - st->codec->codec_id = AV_CODEC_ID_DSICINAUDIO; - st->codec->codec_tag = 0; /* no tag */ - st->codec->channels = 1; - st->codec->channel_layout = AV_CH_LAYOUT_MONO; - st->codec->sample_rate = 22050; - st->codec->bits_per_coded_sample = 8; - st->codec->bit_rate = st->codec->sample_rate * st->codec->bits_per_coded_sample * st->codec->channels; - - return 0; -} - -static int cin_read_frame_header(CinDemuxContext *cin, AVIOContext *pb) { - CinFrameHeader *hdr = &cin->frame_header; - - hdr->video_frame_type = avio_r8(pb); - hdr->audio_frame_type = avio_r8(pb); - hdr->pal_colors_count = avio_rl16(pb); - hdr->video_frame_size = avio_rl32(pb); - hdr->audio_frame_size = avio_rl32(pb); - - if (url_feof(pb) || pb->error) - return AVERROR(EIO); - - if (avio_rl32(pb) != 0xAA55AA55) - return AVERROR_INVALIDDATA; - if (hdr->video_frame_size < 0 || hdr->audio_frame_size < 0) - return AVERROR_INVALIDDATA; - - return 0; -} - -static int cin_read_packet(AVFormatContext *s, AVPacket *pkt) -{ - CinDemuxContext *cin = s->priv_data; - AVIOContext *pb = s->pb; - CinFrameHeader *hdr = &cin->frame_header; - int rc, palette_type, pkt_size; - int ret; - - if (cin->audio_buffer_size == 0) { - rc = cin_read_frame_header(cin, pb); - if (rc) - return rc; - - if ((int16_t)hdr->pal_colors_count < 0) { - hdr->pal_colors_count = -(int16_t)hdr->pal_colors_count; - palette_type = 1; - } else { - palette_type = 0; - } - - /* palette and video packet */ - pkt_size = (palette_type + 3) * hdr->pal_colors_count + hdr->video_frame_size; - - pkt_size = ffio_limit(pb, pkt_size); - - ret = av_new_packet(pkt, 4 + pkt_size); - if (ret < 0) - return ret; - - pkt->stream_index = cin->video_stream_index; - pkt->pts = cin->video_stream_pts++; - - pkt->data[0] = palette_type; - pkt->data[1] = hdr->pal_colors_count & 0xFF; - pkt->data[2] = hdr->pal_colors_count >> 8; - pkt->data[3] = hdr->video_frame_type; - - ret = avio_read(pb, &pkt->data[4], pkt_size); - if (ret < 0) { - av_free_packet(pkt); - return ret; - } - if (ret < pkt_size) - av_shrink_packet(pkt, 4 + ret); - - /* sound buffer will be processed on next read_packet() call */ - cin->audio_buffer_size = hdr->audio_frame_size; - return 0; - } - - /* audio packet */ - ret = av_get_packet(pb, pkt, cin->audio_buffer_size); - if (ret < 0) - return ret; - - pkt->stream_index = cin->audio_stream_index; - pkt->pts = cin->audio_stream_pts; - pkt->duration = cin->audio_buffer_size - (pkt->pts == 0); - cin->audio_stream_pts += pkt->duration; - cin->audio_buffer_size = 0; - return 0; -} - -AVInputFormat ff_dsicin_demuxer = { - .name = "dsicin", - .long_name = NULL_IF_CONFIG_SMALL("Delphine Software International CIN"), - .priv_data_size = sizeof(CinDemuxContext), - .read_probe = cin_probe, - .read_header = cin_read_header, - .read_packet = cin_read_packet, -}; |
