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Diffstat (limited to 'ffmpeg1/libavformat/brstm.c')
-rw-r--r--ffmpeg1/libavformat/brstm.c297
1 files changed, 0 insertions, 297 deletions
diff --git a/ffmpeg1/libavformat/brstm.c b/ffmpeg1/libavformat/brstm.c
deleted file mode 100644
index 7781b3c..0000000
--- a/ffmpeg1/libavformat/brstm.c
+++ /dev/null
@@ -1,297 +0,0 @@
-/*
- * BRSTM demuxer
- * Copyright (c) 2012 Paul B Mahol
- *
- * 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
- */
-
-#include "libavutil/intreadwrite.h"
-#include "libavcodec/bytestream.h"
-#include "avformat.h"
-#include "internal.h"
-
-typedef struct BRSTMDemuxContext {
- uint32_t block_size;
- uint32_t block_count;
- uint32_t current_block;
- uint32_t samples_per_block;
- uint32_t last_block_used_bytes;
- uint8_t *table;
- uint8_t *adpc;
-} BRSTMDemuxContext;
-
-static int probe(AVProbeData *p)
-{
- if (AV_RL32(p->buf) == MKTAG('R','S','T','M') &&
- (AV_RL16(p->buf + 4) == 0xFFFE ||
- AV_RL16(p->buf + 4) == 0xFEFF))
- return AVPROBE_SCORE_MAX / 3 * 2;
- return 0;
-}
-
-static int read_close(AVFormatContext *s)
-{
- BRSTMDemuxContext *b = s->priv_data;
-
- av_freep(&b->table);
- av_freep(&b->adpc);
-
- return 0;
-}
-
-static int read_header(AVFormatContext *s)
-{
- BRSTMDemuxContext *b = s->priv_data;
- int bom, major, minor, codec, chunk;
- int64_t pos, h1offset, toffset;
- uint32_t size, start, asize;
- AVStream *st;
- int ret = AVERROR_EOF;
-
- st = avformat_new_stream(s, NULL);
- if (!st)
- return AVERROR(ENOMEM);
- st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
-
- avio_skip(s->pb, 4);
-
- bom = avio_rb16(s->pb);
- if (bom != 0xFEFF && bom != 0xFFFE) {
- av_log(s, AV_LOG_ERROR, "invalid byte order: %X\n", bom);
- return AVERROR_INVALIDDATA;
- }
- if (bom == 0xFFFE) {
- avpriv_request_sample(s, "little endian byte order");
- return AVERROR_PATCHWELCOME;
- }
-
- major = avio_r8(s->pb);
- minor = avio_r8(s->pb);
- avio_skip(s->pb, 4); // size of file
- size = avio_rb16(s->pb);
- if (size < 14)
- return AVERROR_INVALIDDATA;
-
- avio_skip(s->pb, size - 14);
- pos = avio_tell(s->pb);
- if (avio_rl32(s->pb) != MKTAG('H','E','A','D'))
- return AVERROR_INVALIDDATA;
- size = avio_rb32(s->pb);
- if (size < 256)
- return AVERROR_INVALIDDATA;
- avio_skip(s->pb, 4); // unknown
- h1offset = avio_rb32(s->pb);
- if (h1offset > size)
- return AVERROR_INVALIDDATA;
- avio_skip(s->pb, 12);
- toffset = avio_rb32(s->pb) + 16LL;
- if (toffset > size)
- return AVERROR_INVALIDDATA;
-
- avio_skip(s->pb, pos + h1offset + 8 - avio_tell(s->pb));
- codec = avio_r8(s->pb);
-
- switch (codec) {
- case 0: codec = AV_CODEC_ID_PCM_S8_PLANAR; break;
- case 1: codec = AV_CODEC_ID_PCM_S16BE_PLANAR; break;
- case 2: codec = AV_CODEC_ID_ADPCM_THP; break;
- default:
- avpriv_request_sample(s, "codec %d", codec);
- return AVERROR_PATCHWELCOME;
- }
-
- avio_skip(s->pb, 1); // loop flag
- st->codec->codec_id = codec;
- st->codec->channels = avio_r8(s->pb);
- if (!st->codec->channels)
- return AVERROR_INVALIDDATA;
-
- avio_skip(s->pb, 1); // padding
- st->codec->sample_rate = avio_rb16(s->pb);
- if (!st->codec->sample_rate)
- return AVERROR_INVALIDDATA;
-
- avio_skip(s->pb, 2); // padding
- avio_skip(s->pb, 4); // loop start sample
- st->start_time = 0;
- st->duration = avio_rb32(s->pb);
- avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
-
- start = avio_rb32(s->pb);
- b->current_block = 0;
- b->block_count = avio_rb32(s->pb);
- if (b->block_count > UINT16_MAX) {
- av_log(s, AV_LOG_WARNING, "too many blocks: %u\n", b->block_count);
- return AVERROR_INVALIDDATA;
- }
-
- b->block_size = avio_rb32(s->pb);
- if (b->block_size > UINT16_MAX / st->codec->channels)
- return AVERROR_INVALIDDATA;
- b->block_size *= st->codec->channels;
-
- b->samples_per_block = avio_rb32(s->pb);
- b->last_block_used_bytes = avio_rb32(s->pb);
- if (b->last_block_used_bytes > UINT16_MAX / st->codec->channels)
- return AVERROR_INVALIDDATA;
- b->last_block_used_bytes *= st->codec->channels;
-
- avio_skip(s->pb, 4); // last block samples
- avio_skip(s->pb, 4); // last block size
-
- if (codec == AV_CODEC_ID_ADPCM_THP) {
- int ch;
-
- avio_skip(s->pb, pos + toffset - avio_tell(s->pb));
- toffset = avio_rb32(s->pb) + 16LL;
- if (toffset > size)
- return AVERROR_INVALIDDATA;
-
- avio_skip(s->pb, pos + toffset - avio_tell(s->pb));
- b->table = av_mallocz(32 * st->codec->channels);
- if (!b->table)
- return AVERROR(ENOMEM);
-
- for (ch = 0; ch < st->codec->channels; ch++) {
- if (avio_read(s->pb, b->table + ch * 32, 32) != 32) {
- ret = AVERROR_INVALIDDATA;
- goto fail;
- }
- avio_skip(s->pb, 24);
- }
- }
-
- if (size < (avio_tell(s->pb) - pos)) {
- ret = AVERROR_INVALIDDATA;
- goto fail;
- }
- avio_skip(s->pb, size - (avio_tell(s->pb) - pos));
-
- while (!url_feof(s->pb)) {
- chunk = avio_rl32(s->pb);
- size = avio_rb32(s->pb);
- if (size < 8) {
- ret = AVERROR_INVALIDDATA;
- goto fail;
- }
- size -= 8;
- switch (chunk) {
- case MKTAG('A','D','P','C'):
- if (codec != AV_CODEC_ID_ADPCM_THP)
- goto skip;
-
- asize = b->block_count * st->codec->channels * 4;
- if (size < asize) {
- ret = AVERROR_INVALIDDATA;
- goto fail;
- }
- if (b->adpc) {
- av_log(s, AV_LOG_WARNING, "skipping additonal ADPC chunk\n");
- goto skip;
- } else {
- b->adpc = av_mallocz(asize);
- if (!b->adpc) {
- ret = AVERROR(ENOMEM);
- goto fail;
- }
- avio_read(s->pb, b->adpc, asize);
- avio_skip(s->pb, size - asize);
- }
- break;
- case MKTAG('D','A','T','A'):
- if ((start < avio_tell(s->pb)) ||
- (!b->adpc && codec == AV_CODEC_ID_ADPCM_THP)) {
- ret = AVERROR_INVALIDDATA;
- goto fail;
- }
- avio_skip(s->pb, start - avio_tell(s->pb));
-
- if (major != 1 || minor)
- avpriv_request_sample(s, "Version %d.%d", major, minor);
-
- return 0;
- default:
- av_log(s, AV_LOG_WARNING, "skipping unknown chunk: %X\n", chunk);
-skip:
- avio_skip(s->pb, size);
- }
- }
-
-fail:
- read_close(s);
-
- return ret;
-}
-
-static int read_packet(AVFormatContext *s, AVPacket *pkt)
-{
- AVCodecContext *codec = s->streams[0]->codec;
- BRSTMDemuxContext *b = s->priv_data;
- uint32_t samples, size;
- int ret;
-
- if (url_feof(s->pb))
- return AVERROR_EOF;
- b->current_block++;
- if (b->current_block == b->block_count) {
- size = b->last_block_used_bytes;
- samples = size / (8 * codec->channels) * 14;
- } else if (b->current_block < b->block_count) {
- size = b->block_size;
- samples = b->samples_per_block;
- } else {
- return AVERROR_EOF;
- }
-
- if (codec->codec_id == AV_CODEC_ID_ADPCM_THP) {
- uint8_t *dst;
-
- if (av_new_packet(pkt, 8 + (32 + 4) * codec->channels + size) < 0)
- return AVERROR(ENOMEM);
- dst = pkt->data;
- bytestream_put_be32(&dst, size);
- bytestream_put_be32(&dst, samples);
- bytestream_put_buffer(&dst, b->table, 32 * codec->channels);
- bytestream_put_buffer(&dst, b->adpc + 4 * codec->channels *
- (b->current_block - 1), 4 * codec->channels);
-
- ret = avio_read(s->pb, dst, size);
- if (ret != size)
- av_free_packet(pkt);
- pkt->duration = samples;
- } else {
- ret = av_get_packet(s->pb, pkt, size);
- }
-
- pkt->stream_index = 0;
-
- if (ret != size)
- ret = AVERROR(EIO);
-
- return ret;
-}
-
-AVInputFormat ff_brstm_demuxer = {
- .name = "brstm",
- .long_name = NULL_IF_CONFIG_SMALL("BRSTM (Binary Revolution Stream)"),
- .priv_data_size = sizeof(BRSTMDemuxContext),
- .read_probe = probe,
- .read_header = read_header,
- .read_packet = read_packet,
- .read_close = read_close,
- .extensions = "brstm",
-};
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