/*
- * AIFF/AIFF-C encoder and decoder
+ * AIFF/AIFF-C muxer/demuxer common data
* Copyright (c) 2006 Patrick Guimond
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * 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 this library; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "avformat.h"
-#include "allformats.h"
-#include "avi.h"
-#include "intfloat_readwrite.h"
-
-const CodecTag codec_aiff_tags[] = {
- { CODEC_ID_PCM_S16BE, MKTAG('N','O','N','E') },
- { CODEC_ID_PCM_S8, MKTAG('N','O','N','E') },
- { CODEC_ID_PCM_S24BE, MKTAG('N','O','N','E') },
- { CODEC_ID_PCM_S32BE, MKTAG('N','O','N','E') },
- { CODEC_ID_PCM_ALAW, MKTAG('a','l','a','w') },
- { CODEC_ID_PCM_ALAW, MKTAG('A','L','A','W') },
- { CODEC_ID_PCM_MULAW, MKTAG('u','l','a','w') },
- { CODEC_ID_PCM_MULAW, MKTAG('U','L','A','W') },
- { CODEC_ID_MACE3, MKTAG('M','A','C','3') },
- { CODEC_ID_MACE6, MKTAG('M','A','C','6') },
- { CODEC_ID_GSM, MKTAG('G','S','M',' ') },
- { CODEC_ID_ADPCM_G726, MKTAG('G','7','2','6') },
- { 0, 0 },
-};
-
-#define AIFF 0
-#define AIFF_C_VERSION1 0xA2805140
-
-static int aiff_codec_get_id (int bps)
-{
- if (bps <= 8)
- return CODEC_ID_PCM_S8;
- if (bps <= 16)
- return CODEC_ID_PCM_S16BE;
- if (bps <= 24)
- return CODEC_ID_PCM_S24BE;
- if (bps <= 32)
- return CODEC_ID_PCM_S32BE;
-
- /* bigger than 32 isn't allowed */
- return 0;
-}
-
-/* returns the size of the found tag */
-static int get_tag(ByteIOContext *pb, uint32_t * tag)
-{
- int size;
-
- if (url_feof(pb))
- return AVERROR_IO;
-
- *tag = get_le32(pb);
- size = get_be32(pb);
-
- if (size < 0)
- size = 0x7fffffff;
-
- return size;
-}
-
-/* Metadata string read */
-static void get_meta(ByteIOContext *pb, char * str, int strsize, int size)
-{
- int res;
-
- if (size > strsize-1)
- res = get_buffer(pb, (uint8_t*)str, strsize-1);
- else
- res = get_buffer(pb, (uint8_t*)str, size);
-
- if (res < 0)
- return;
-
- str[res] = 0;
- if (size & 1)
- size++;
- size -= res;
- if (size);
- url_fskip(pb, size);
-}
-
-/* Returns the number of bits per second */
-static int fix_bps(int codec_id)
-{
- switch (codec_id) {
- case CODEC_ID_PCM_S8:
- return 8;
- case CODEC_ID_PCM_S16BE:
- return 16;
- case CODEC_ID_PCM_S24BE:
- return 24;
- case CODEC_ID_PCM_S32BE:
- return 32;
- }
-
- return -1;
-}
-
-/* Returns the number of sound data frames or negative on error */
-static unsigned int get_aiff_header(ByteIOContext *pb, AVCodecContext *codec,
- int size, unsigned version)
-{
- AVExtFloat ext;
- double sample_rate;
- unsigned int num_frames;
-
-
- if (size & 1)
- size++;
-
- codec->codec_type = CODEC_TYPE_AUDIO;
- codec->channels = get_be16(pb);
- num_frames = get_be32(pb);
- codec->bits_per_sample = get_be16(pb);
-
- get_buffer(pb, (uint8_t*)&ext, sizeof(ext));/* Sample rate is in */
- sample_rate = av_ext2dbl(ext); /* 80 bits BE IEEE extended float */
- codec->sample_rate = sample_rate;
- size -= 18;
-
- /* Got an AIFF-C? */
- if (version == AIFF_C_VERSION1) {
- codec->codec_tag = get_le32(pb);
- codec->codec_id = codec_get_id (codec_aiff_tags, codec->codec_tag);
-
- if (codec->codec_id == CODEC_ID_PCM_S16BE) {
- codec->codec_id = aiff_codec_get_id (codec->bits_per_sample);
- codec->bits_per_sample = fix_bps(codec->codec_id);
- }
-
- size -= 4;
- } else {
- /* Need the codec type */
- codec->codec_id = aiff_codec_get_id (codec->bits_per_sample);
- codec->bits_per_sample = fix_bps(codec->codec_id);
- }
-
- if (!codec->codec_id)
- return AVERROR_INVALIDDATA;
-
- /* Block align needs to be computed in all cases, as the definition
- * is specific to applications -> here we use the WAVE format definition */
- codec->block_align = (codec->bits_per_sample * codec->channels) >> 3;
-
- codec->bit_rate = codec->sample_rate * codec->block_align;
-
- /* Chunk is over */
- if (size)
- url_fseek(pb, size, SEEK_CUR);
-
- return num_frames;
-}
-
-#ifdef CONFIG_MUXERS
-typedef struct {
- offset_t form;
- offset_t frames;
- offset_t ssnd;
-} AIFFOutputContext;
-
-static int aiff_write_header(AVFormatContext *s)
-{
- AIFFOutputContext *aiff = s->priv_data;
- ByteIOContext *pb = &s->pb;
- AVCodecContext *enc = s->streams[0]->codec;
- AVExtFloat sample_rate;
- int coder_len;
-
- /* First verify if format is ok */
- enc->codec_tag = codec_get_tag(codec_aiff_tags, enc->codec_id);
- if (!enc->codec_tag) {
- av_free(aiff);
- return -1;
- }
-
- coder_len = strlen(enc->codec->name);
-
- /* FORM AIFF header */
- put_tag(pb, "FORM");
- aiff->form = url_ftell(pb);
- put_be32(pb, 0); /* file length */
- put_tag(pb, "AIFC");
-
- /* Version chunk */
- put_tag(pb, "FVER");
- put_be32(pb, 4);
- put_be32(pb, 0xA2805140);
-
- /* Common chunk */
- put_tag(pb, "COMM");
- if (coder_len & 1) /* Common chunk is of var size */
- put_be32(pb, 23+coder_len);
- else
- put_be32(pb, 24+coder_len);
- put_be16(pb, enc->channels); /* Number of channels */
-
- aiff->frames = url_ftell(pb);
- put_be32(pb, 0); /* Number of frames */
-
- if (!enc->bits_per_sample)
- enc->bits_per_sample = (enc->block_align<<3) / enc->channels;
- put_be16(pb, enc->bits_per_sample); /* Sample size */
-
- sample_rate = av_dbl2ext((double)enc->sample_rate);
- put_buffer(pb, (uint8_t*)&sample_rate, sizeof(sample_rate));
-
- put_le32(pb, enc->codec_tag);
- if (coder_len & 1) {
- put_byte(pb, coder_len);
- put_buffer(pb, (const uint8_t*)enc->codec->name, coder_len);
- } else {
- put_byte(pb, coder_len+1);
- put_buffer(pb, (const uint8_t*)enc->codec->name, coder_len);
- put_byte(pb, 0);
- }
-
- /* Sound data chunk */
- put_tag(pb, "SSND");
- aiff->ssnd = url_ftell(pb); /* Sound chunk size */
- put_be32(pb, 0); /* Sound samples data size */
- put_be32(pb, 0); /* Data offset */
- put_be32(pb, 0); /* Block-size (block align) */
-
- av_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate);
- /* Data is starting here */
- put_flush_packet(pb);
-
- return 0;
-}
-
-static int aiff_write_packet(AVFormatContext *s, AVPacket *pkt)
-{
- ByteIOContext *pb = &s->pb;
- put_buffer(pb, pkt->data, pkt->size);
- return 0;
-}
-
-static int aiff_write_trailer(AVFormatContext *s)
-{
- ByteIOContext *pb = &s->pb;
- AIFFOutputContext *aiff = s->priv_data;
- AVCodecContext *enc = s->streams[0]->codec;
-
- /* Chunks sizes must be even */
- offset_t file_size, end_size;
- end_size = file_size = url_ftell(pb);
- if (file_size & 1) {
- put_byte(pb, 0);
- end_size++;
- }
-
- if (!url_is_streamed(&s->pb)) {
- /* File length */
- url_fseek(pb, aiff->form, SEEK_SET);
- put_be32(pb, (uint32_t)(file_size - aiff->form - 4));
-
- /* Number of sample frames */
- url_fseek(pb, aiff->frames, SEEK_SET);
- put_be32(pb, ((uint32_t)(file_size-aiff->ssnd-12))/enc->block_align);
-
- /* Sound Data chunk size */
- url_fseek(pb, aiff->ssnd, SEEK_SET);
- put_be32(pb, (uint32_t)(file_size - aiff->ssnd - 4));
-
- /* return to the end */
- url_fseek(pb, end_size, SEEK_SET);
-
- put_flush_packet(pb);
- }
-
- return 0;
-}
-#endif //CONFIG_MUXERS
-
-static int aiff_probe(AVProbeData *p)
-{
- /* check file header */
- if (p->buf_size < 16)
- return 0;
- if (p->buf[0] == 'F' && p->buf[1] == 'O' &&
- p->buf[2] == 'R' && p->buf[3] == 'M' &&
- p->buf[8] == 'A' && p->buf[9] == 'I' &&
- p->buf[10] == 'F' && (p->buf[11] == 'F' || p->buf[11] == 'C'))
- return AVPROBE_SCORE_MAX;
- else
- return 0;
-}
-
-/* aiff input */
-static int aiff_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
-{
- int size, filesize, offset;
- uint32_t tag;
- unsigned version = AIFF_C_VERSION1;
- ByteIOContext *pb = &s->pb;
- AVStream * st = s->streams[0];
-
- /* check FORM header */
- filesize = get_tag(pb, &tag);
- if (filesize < 0 || tag != MKTAG('F', 'O', 'R', 'M'))
- return AVERROR_INVALIDDATA;
-
- /* AIFF data type */
- tag = get_le32(pb);
- if (tag == MKTAG('A', 'I', 'F', 'F')) /* Got an AIFF file */
- version = AIFF;
- else if (tag != MKTAG('A', 'I', 'F', 'C')) /* An AIFF-C file then */
- return AVERROR_INVALIDDATA;
-
- filesize -= 4;
-
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
-
- while (filesize > 0) {
- /* parse different chunks */
- size = get_tag(pb, &tag);
- if (size < 0)
- return size;
-
- filesize -= size + 8;
-
- switch (tag) {
- case MKTAG('C', 'O', 'M', 'M'): /* Common chunk */
- /* Then for the complete header info */
- st->nb_frames = get_aiff_header (pb, st->codec, size, version);
- if (st->nb_frames < 0)
- return st->nb_frames;
- break;
-
- case MKTAG('F', 'V', 'E', 'R'): /* Version chunk */
- version = get_be32(pb);
- break;
-
- case MKTAG('N', 'A', 'M', 'E'): /* Sample name chunk */
- get_meta (pb, s->title, sizeof(s->title), size);
- break;
-
- case MKTAG('A', 'U', 'T', 'H'): /* Author chunk */
- get_meta (pb, s->author, sizeof(s->author), size);
- break;
-
- case MKTAG('(', 'c', ')', ' '): /* Copyright chunk */
- get_meta (pb, s->copyright, sizeof(s->copyright), size);
- break;
-
- case MKTAG('A', 'N', 'N', 'O'): /* Annotation chunk */
- get_meta (pb, s->comment, sizeof(s->comment), size);
- break;
-
- case MKTAG('S', 'S', 'N', 'D'): /* Sampled sound chunk */
- get_be32(pb); /* Block align... don't care */
- offset = get_be32(pb); /* Offset of sound data */
- goto got_sound;
-
- default: /* Jump */
- if (size & 1) /* Always even aligned */
- size++;
- url_fskip (pb, size);
- }
- }
-
- /* End of loop and didn't get sound */
- return AVERROR_INVALIDDATA;
-
-got_sound:
- /* Now positioned, get the sound data start and end */
- if (st->nb_frames)
- s->file_size = st->nb_frames * st->codec->block_align;
-
- av_set_pts_info(st, 64, 1, st->codec->sample_rate);
- st->start_time = 0;
- st->duration = st->nb_frames;
-
- /* Position the stream at the first block */
- url_fskip(pb, offset);
-
- return 0;
-}
-
-#define MAX_SIZE 4096
-
-static int aiff_read_packet(AVFormatContext *s,
- AVPacket *pkt)
-{
- AVStream *st = s->streams[0];
- int res;
-
- /* End of stream may be reached */
- if (url_feof(&s->pb))
- return AVERROR_IO;
-
- /* Now for that packet */
- res = av_get_packet(&s->pb, pkt, (MAX_SIZE / st->codec->block_align) * st->codec->block_align);
- if (res < 0)
- return res;
-
- /* Only one stream in an AIFF file */
- pkt->stream_index = 0;
- return 0;
-}
-
-static int aiff_read_close(AVFormatContext *s)
-{
- return 0;
-}
-
-static int aiff_read_seek(AVFormatContext *s,
- int stream_index, int64_t timestamp, int flags)
-{
- return pcm_read_seek(s, stream_index, timestamp, flags);
-}
-
-
-static AVInputFormat aiff_iformat = {
- "aiff",
- "Audio IFF",
- 0,
- aiff_probe,
- aiff_read_header,
- aiff_read_packet,
- aiff_read_close,
- aiff_read_seek,
+#include <stddef.h>
+#include "libavcodec/codec_id.h"
+#include "internal.h"
+
+const AVCodecTag ff_codec_aiff_tags[] = {
+ { AV_CODEC_ID_PCM_S16BE, MKTAG('N','O','N','E') },
+ { AV_CODEC_ID_PCM_S8, MKTAG('N','O','N','E') },
+ { AV_CODEC_ID_PCM_U8, MKTAG('r','a','w',' ') },
+ { AV_CODEC_ID_PCM_S24BE, MKTAG('N','O','N','E') },
+ { AV_CODEC_ID_PCM_S32BE, MKTAG('N','O','N','E') },
+ { AV_CODEC_ID_PCM_F32BE, MKTAG('f','l','3','2') },
+ { AV_CODEC_ID_PCM_F64BE, MKTAG('f','l','6','4') },
+ { AV_CODEC_ID_PCM_ALAW, MKTAG('a','l','a','w') },
+ { AV_CODEC_ID_PCM_MULAW, MKTAG('u','l','a','w') },
+ { AV_CODEC_ID_PCM_S24BE, MKTAG('i','n','2','4') },
+ { AV_CODEC_ID_PCM_S32BE, MKTAG('i','n','3','2') },
+ { AV_CODEC_ID_MACE3, MKTAG('M','A','C','3') },
+ { AV_CODEC_ID_MACE6, MKTAG('M','A','C','6') },
+ { AV_CODEC_ID_GSM, MKTAG('G','S','M',' ') },
+ { AV_CODEC_ID_ADPCM_G722, MKTAG('G','7','2','2') },
+ { AV_CODEC_ID_ADPCM_G726LE, MKTAG('G','7','2','6') },
+ { AV_CODEC_ID_PCM_S16BE, MKTAG('t','w','o','s') },
+ { AV_CODEC_ID_PCM_S16LE, MKTAG('s','o','w','t') },
+ { AV_CODEC_ID_ADPCM_IMA_QT, MKTAG('i','m','a','4') },
+ { AV_CODEC_ID_QDMC, MKTAG('Q','D','M','C') },
+ { AV_CODEC_ID_QDM2, MKTAG('Q','D','M','2') },
+ { AV_CODEC_ID_QCELP, MKTAG('Q','c','l','p') },
+ { AV_CODEC_ID_SDX2_DPCM, MKTAG('S','D','X','2') },
+ { AV_CODEC_ID_ADPCM_IMA_WS, MKTAG('A','D','P','4') },
+ { AV_CODEC_ID_NONE, 0 },
};
-#ifdef CONFIG_MUXERS
-static AVOutputFormat aiff_oformat = {
- "aiff",
- "Audio IFF",
- "audio/aiff",
- "aif,aiff,afc,aifc",
- sizeof(AIFFOutputContext),
- CODEC_ID_PCM_S16BE,
- CODEC_ID_NONE,
- aiff_write_header,
- aiff_write_packet,
- aiff_write_trailer,
-};
-#endif //CONFIG_MUXERS
-
-int ff_aiff_init(void)
-{
- av_register_input_format(&aiff_iformat);
-#ifdef CONFIG_MUXERS
- av_register_output_format(&aiff_oformat);
-#endif //CONFIG_MUXERS
- return 0;
-}
-
+const AVCodecTag *const ff_aiff_codec_tags_list[] = { ff_codec_aiff_tags, NULL };
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