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authorTim Redfern <tim@eclectronics.org>2014-02-17 13:36:38 +0000
committerTim Redfern <tim@eclectronics.org>2014-02-17 13:36:38 +0000
commit22e28216336da876e1fd17f380ce42eaf1446769 (patch)
tree444dad3dc7e2656992d29f34f7bce31970c122a5 /ffmpeg/libavformat/amr.c
parentae5e8541f6e06e64c28719467cdf366ac57aff31 (diff)
chasing indexing error
Diffstat (limited to 'ffmpeg/libavformat/amr.c')
-rw-r--r--ffmpeg/libavformat/amr.c179
1 files changed, 0 insertions, 179 deletions
diff --git a/ffmpeg/libavformat/amr.c b/ffmpeg/libavformat/amr.c
deleted file mode 100644
index db9bb4e..0000000
--- a/ffmpeg/libavformat/amr.c
+++ /dev/null
@@ -1,179 +0,0 @@
-/*
- * amr file format
- * Copyright (c) 2001 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
- */
-
-/*
-Write and read amr data according to RFC3267, http://www.ietf.org/rfc/rfc3267.txt?number=3267
-
-Only mono files are supported.
-
-*/
-
-#include "libavutil/avassert.h"
-#include "libavutil/channel_layout.h"
-#include "avformat.h"
-#include "internal.h"
-
-static const char AMR_header[] = "#!AMR\n";
-static const char AMRWB_header[] = "#!AMR-WB\n";
-
-#if CONFIG_AMR_MUXER
-static int amr_write_header(AVFormatContext *s)
-{
- AVIOContext *pb = s->pb;
- AVCodecContext *enc = s->streams[0]->codec;
-
- s->priv_data = NULL;
-
- if (enc->codec_id == AV_CODEC_ID_AMR_NB) {
- avio_write(pb, AMR_header, sizeof(AMR_header) - 1); /* magic number */
- } else if (enc->codec_id == AV_CODEC_ID_AMR_WB) {
- avio_write(pb, AMRWB_header, sizeof(AMRWB_header) - 1); /* magic number */
- } else {
- return -1;
- }
- avio_flush(pb);
- return 0;
-}
-
-static int amr_write_packet(AVFormatContext *s, AVPacket *pkt)
-{
- avio_write(s->pb, pkt->data, pkt->size);
- return 0;
-}
-#endif /* CONFIG_AMR_MUXER */
-
-static int amr_probe(AVProbeData *p)
-{
- // Only check for "#!AMR" which could be amr-wb, amr-nb.
- // This will also trigger multichannel files: "#!AMR_MC1.0\n" and
- // "#!AMR-WB_MC1.0\n" (not supported)
-
- if (!memcmp(p->buf, AMR_header, 5))
- return AVPROBE_SCORE_MAX;
- else
- return 0;
-}
-
-/* amr input */
-static int amr_read_header(AVFormatContext *s)
-{
- AVIOContext *pb = s->pb;
- AVStream *st;
- uint8_t header[9];
-
- avio_read(pb, header, 6);
-
- st = avformat_new_stream(s, NULL);
- if (!st)
- return AVERROR(ENOMEM);
- if (memcmp(header, AMR_header, 6)) {
- avio_read(pb, header + 6, 3);
- if (memcmp(header, AMRWB_header, 9)) {
- return -1;
- }
-
- st->codec->codec_tag = MKTAG('s', 'a', 'w', 'b');
- st->codec->codec_id = AV_CODEC_ID_AMR_WB;
- st->codec->sample_rate = 16000;
- } else {
- st->codec->codec_tag = MKTAG('s', 'a', 'm', 'r');
- st->codec->codec_id = AV_CODEC_ID_AMR_NB;
- st->codec->sample_rate = 8000;
- }
- st->codec->channels = 1;
- st->codec->channel_layout = AV_CH_LAYOUT_MONO;
- st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
-
- return 0;
-}
-
-static int amr_read_packet(AVFormatContext *s, AVPacket *pkt)
-{
- AVCodecContext *enc = s->streams[0]->codec;
- int read, size = 0, toc, mode;
- int64_t pos = avio_tell(s->pb);
-
- if (url_feof(s->pb)) {
- return AVERROR(EIO);
- }
-
- // FIXME this is wrong, this should rather be in a AVParset
- toc = avio_r8(s->pb);
- mode = (toc >> 3) & 0x0F;
-
- if (enc->codec_id == AV_CODEC_ID_AMR_NB) {
- static const uint8_t packed_size[16] = {
- 12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0
- };
-
- size = packed_size[mode] + 1;
- } else if (enc->codec_id == AV_CODEC_ID_AMR_WB) {
- static const uint8_t packed_size[16] = {
- 18, 24, 33, 37, 41, 47, 51, 59, 61, 6, 6, 0, 0, 0, 1, 1
- };
-
- size = packed_size[mode];
- }
-
- if (!size || av_new_packet(pkt, size))
- return AVERROR(EIO);
-
- /* Both AMR formats have 50 frames per second */
- s->streams[0]->codec->bit_rate = size*8*50;
-
- pkt->stream_index = 0;
- pkt->pos = pos;
- pkt->data[0] = toc;
- pkt->duration = enc->codec_id == AV_CODEC_ID_AMR_NB ? 160 : 320;
- read = avio_read(s->pb, pkt->data + 1, size - 1);
-
- if (read != size - 1) {
- av_free_packet(pkt);
- return AVERROR(EIO);
- }
-
- return 0;
-}
-
-#if CONFIG_AMR_DEMUXER
-AVInputFormat ff_amr_demuxer = {
- .name = "amr",
- .long_name = NULL_IF_CONFIG_SMALL("3GPP AMR"),
- .read_probe = amr_probe,
- .read_header = amr_read_header,
- .read_packet = amr_read_packet,
- .flags = AVFMT_GENERIC_INDEX,
-};
-#endif
-
-#if CONFIG_AMR_MUXER
-AVOutputFormat ff_amr_muxer = {
- .name = "amr",
- .long_name = NULL_IF_CONFIG_SMALL("3GPP AMR"),
- .mime_type = "audio/amr",
- .extensions = "amr",
- .audio_codec = AV_CODEC_ID_AMR_NB,
- .video_codec = AV_CODEC_ID_NONE,
- .write_header = amr_write_header,
- .write_packet = amr_write_packet,
-};
-#endif