[FFmpeg-cvslog] r12808 - in trunk: Changelog doc/general.texi libavcodec/avcodec.h libavformat/Makefile libavformat/allformats.c libavformat/bfi.c
vitor
subversion
Sun Apr 13 23:06:32 CEST 2008
Author: vitor
Date: Sun Apr 13 23:06:31 2008
New Revision: 12808
Log:
BFI demuxer
Patch by Sisir Koppaka (sisir.koppaka at G.M!A.I!L.com)
Added:
trunk/libavformat/bfi.c
Modified:
trunk/Changelog
trunk/doc/general.texi
trunk/libavcodec/avcodec.h
trunk/libavformat/Makefile
trunk/libavformat/allformats.c
Modified: trunk/Changelog
==============================================================================
--- trunk/Changelog (original)
+++ trunk/Changelog Sun Apr 13 23:06:31 2008
@@ -118,6 +118,7 @@ version <next>
- RL2 demuxer / decoder
- IFF demuxer
- 8SVX audio decoder
+- BFI demuxer
version 0.4.9-pre1:
Modified: trunk/doc/general.texi
==============================================================================
--- trunk/doc/general.texi (original)
+++ trunk/doc/general.texi Sun Apr 13 23:06:31 2008
@@ -135,6 +135,8 @@ different game cutscenes repacked for us
@tab Audio and video format used in some games by Entertainment Software Partners
@item IFF @tab @tab X
@tab Interchange File Format
+ at item BFI @tab @tab
+ at tab Brute Force & Ignorance, used in Flash Traffic: City of Angels
@end multitable
@code{X} means that encoding (resp. decoding) is supported.
Modified: trunk/libavcodec/avcodec.h
==============================================================================
--- trunk/libavcodec/avcodec.h (original)
+++ trunk/libavcodec/avcodec.h Sun Apr 13 23:06:31 2008
@@ -185,6 +185,7 @@ enum CodecID {
CODEC_ID_8SVX_FIB,
CODEC_ID_ESCAPE124,
CODEC_ID_DIRAC,
+ CODEC_ID_BFI,
/* various PCM "codecs" */
CODEC_ID_PCM_S16LE= 0x10000,
Modified: trunk/libavformat/Makefile
==============================================================================
--- trunk/libavformat/Makefile (original)
+++ trunk/libavformat/Makefile Sun Apr 13 23:06:31 2008
@@ -33,6 +33,7 @@ OBJS-$(CONFIG_AVISYNTH)
OBJS-$(CONFIG_AVM2_MUXER) += swf.o
OBJS-$(CONFIG_AVS_DEMUXER) += avs.o vocdec.o voc.o
OBJS-$(CONFIG_BETHSOFTVID_DEMUXER) += bethsoftvid.o
+OBJS-$(CONFIG_BFI_DEMUXER) += bfi.o
OBJS-$(CONFIG_C93_DEMUXER) += c93.o vocdec.o voc.o
OBJS-$(CONFIG_CRC_MUXER) += crcenc.o
OBJS-$(CONFIG_DAUD_DEMUXER) += daud.o
Modified: trunk/libavformat/allformats.c
==============================================================================
--- trunk/libavformat/allformats.c (original)
+++ trunk/libavformat/allformats.c Sun Apr 13 23:06:31 2008
@@ -65,6 +65,7 @@ void av_register_all(void)
REGISTER_MUXER (AVM2, avm2);
REGISTER_DEMUXER (AVS, avs);
REGISTER_DEMUXER (BETHSOFTVID, bethsoftvid);
+ REGISTER_DEMUXER (BFI, bfi);
REGISTER_DEMUXER (C93, c93);
REGISTER_MUXER (CRC, crc);
REGISTER_DEMUXER (DAUD, daud);
Added: trunk/libavformat/bfi.c
==============================================================================
--- (empty file)
+++ trunk/libavformat/bfi.c Sun Apr 13 23:06:31 2008
@@ -0,0 +1,167 @@
+/*
+ * Brute Force & Ignorance (BFI) demuxer
+ * Copyright (c) 2008 Sisir Koppaka
+ *
+ * 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 bfi.c
+ * @brief Brute Force & Ignorance (.bfi) file demuxer
+ * @author Sisir Koppaka ( sisir.koppaka at gmail dot com )
+ * @sa http://wiki.multimedia.cx/index.php?title=BFI
+ */
+
+#include "avformat.h"
+
+typedef struct BFIContext {
+ int nframes;
+ int audio_frame;
+ int video_frame;
+ int video_size;
+ int avflag;
+} BFIContext;
+
+static int bfi_probe(AVProbeData * p)
+{
+ /* Check file header */
+ if (AV_RL32(p->buf) == MKTAG('B', 'F', '&', 'I'))
+ return AVPROBE_SCORE_MAX;
+ else
+ return 0;
+}
+
+static int bfi_read_header(AVFormatContext * s, AVFormatParameters * ap)
+{
+ BFIContext *bfi = s->priv_data;
+ ByteIOContext *pb = s->pb;
+ AVStream *vstream;
+ AVStream *astream;
+ int fps, chunk_header;
+
+ /* Initialize the video codec... */
+ vstream = av_new_stream(s, 0);
+ if (!vstream)
+ return AVERROR(ENOMEM);
+
+ /* Initialize the audio codec... */
+ astream = av_new_stream(s, 0);
+ if (!astream)
+ return AVERROR(ENOMEM);
+
+ /* Set the total number of frames. */
+ url_fskip(pb, 8);
+ chunk_header = get_le32(pb);
+ bfi->nframes = get_le32(pb);
+ get_le32(pb);
+ get_le32(pb);
+ get_le32(pb);
+ fps = get_le32(pb);
+ url_fskip(pb, 12);
+ vstream->codec->width = get_le32(pb);
+ vstream->codec->height = get_le32(pb);
+
+ /*Load the palette to extradata */
+ url_fskip(pb, 8);
+ vstream->codec->extradata = av_malloc(768);
+ vstream->codec->extradata_size = 768;
+ get_buffer(pb, vstream->codec->extradata,
+ vstream->codec->extradata_size);
+
+ astream->codec->sample_rate = get_le32(pb);
+
+ /* Set up the video codec... */
+ av_set_pts_info(vstream, 32, 1, fps);
+ vstream->codec->codec_type = CODEC_TYPE_VIDEO;
+ vstream->codec->codec_id = CODEC_ID_BFI;
+ vstream->codec->pix_fmt = PIX_FMT_PAL8;
+
+ /* Set up the audio codec now... */
+ astream->codec->codec_type = CODEC_TYPE_AUDIO;
+ astream->codec->codec_id = CODEC_ID_PCM_U8;
+ astream->codec->channels = 1;
+ astream->codec->bits_per_sample = 8;
+ astream->codec->bit_rate =
+ astream->codec->sample_rate * astream->codec->bits_per_sample;
+ url_fseek(pb, chunk_header - 3, SEEK_SET);
+ av_set_pts_info(astream, 64, 1, astream->codec->sample_rate);
+ return 0;
+}
+
+
+static int bfi_read_packet(AVFormatContext * s, AVPacket * pkt)
+{
+ BFIContext *bfi = s->priv_data;
+ ByteIOContext *pb = s->pb;
+ int ret, audio_offset, video_offset, chunk_size, audio_size = 0;
+ if (bfi->nframes == 0 || url_feof(pb)) {
+ return AVERROR(EIO);
+ }
+
+ /* If all previous chunks were completely read, then find a new one... */
+ if (!bfi->avflag) {
+ uint32_t state = 0;
+ while(state != MKTAG('S','A','V','I')){
+ if (url_feof(pb))
+ return AVERROR(EIO);
+ state = 256*state + get_byte(pb);
+ }
+ /* Now that the chunk's location is confirmed, we proceed... */
+ chunk_size = get_le32(pb);
+ get_le32(pb);
+ audio_offset = get_le32(pb);
+ get_le32(pb);
+ video_offset = get_le32(pb);
+ audio_size = video_offset - audio_offset;
+ bfi->video_size = chunk_size - video_offset;
+
+ //Tossing an audio packet at the audio decoder.
+ ret = av_get_packet(pb, pkt, audio_size);
+ if (ret < 0)
+ return ret;
+
+ pkt->pts = bfi->audio_frame;
+ bfi->audio_frame += ret;
+ }
+
+ else {
+
+ //Tossing a video packet at the video decoder.
+ ret = av_get_packet(pb, pkt, bfi->video_size);
+ if (ret < 0)
+ return ret;
+
+ pkt->pts = bfi->video_frame;
+ bfi->video_frame += ret / bfi->video_size;
+
+ /* One less frame to read. A cursory decrement. */
+ bfi->nframes--;
+ }
+
+ bfi->avflag = !bfi->avflag;
+ pkt->stream_index = bfi->avflag;
+ return ret;
+}
+
+AVInputFormat bfi_demuxer = {
+ "bfi",
+ "Brute Force & Ignorance",
+ sizeof(BFIContext),
+ bfi_probe,
+ bfi_read_header,
+ bfi_read_packet,
+};
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