X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Fwav.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Fwav.c;h=0000000000000000000000000000000000000000;hb=6fa8f2f38d4b0b35f8539bf94e27ae27015c7689;hp=a75cd41f7103ee76ee081b5c2f14f8c753979933;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/wav.c b/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/wav.c deleted file mode 100644 index a75cd41..0000000 --- a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/wav.c +++ /dev/null @@ -1,346 +0,0 @@ -/* - * WAV encoder and decoder - * Copyright (c) 2001, 2002 Fabrice Bellard. - * - * This library 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. - * - * This library 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 - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -#include "avformat.h" -#include "avi.h" - -const CodecTag codec_wav_tags[] = { - { CODEC_ID_MP2, 0x50 }, - { CODEC_ID_MP3, 0x55 }, - { CODEC_ID_AC3, 0x2000 }, - { CODEC_ID_PCM_S16LE, 0x01 }, - { CODEC_ID_PCM_U8, 0x01 }, /* must come after s16le in this list */ - { CODEC_ID_PCM_ALAW, 0x06 }, - { CODEC_ID_PCM_MULAW, 0x07 }, - { CODEC_ID_ADPCM_MS, 0x02 }, - { CODEC_ID_ADPCM_IMA_WAV, 0x11 }, - { CODEC_ID_ADPCM_IMA_DK4, 0x61 }, /* rogue format number */ - { CODEC_ID_ADPCM_IMA_DK3, 0x62 }, /* rogue format number */ - { CODEC_ID_WMAV1, 0x160 }, - { CODEC_ID_WMAV2, 0x161 }, - { 0, 0 }, -}; - -/* WAVEFORMATEX header */ -/* returns the size or -1 on error */ -int put_wav_header(ByteIOContext *pb, AVCodecContext *enc) -{ - int bps, blkalign, bytespersec; - int hdrsize = 18; - - if(!enc->codec_tag) - enc->codec_tag = codec_get_tag(codec_wav_tags, enc->codec_id); - if(!enc->codec_tag) - return -1; - - put_le16(pb, enc->codec_tag); - put_le16(pb, enc->channels); - put_le32(pb, enc->sample_rate); - if (enc->codec_id == CODEC_ID_PCM_U8 || - enc->codec_id == CODEC_ID_PCM_ALAW || - enc->codec_id == CODEC_ID_PCM_MULAW) { - bps = 8; - } else if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) { - bps = 0; - } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV || enc->codec_id == CODEC_ID_ADPCM_MS) { - bps = 4; - } else { - bps = 16; - } - - if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) { - blkalign = 1; - //blkalign = 144 * enc->bit_rate/enc->sample_rate; - } else if (enc->block_align != 0) { /* specified by the codec */ - blkalign = enc->block_align; - } else - blkalign = enc->channels*bps >> 3; - if (enc->codec_id == CODEC_ID_PCM_U8 || - enc->codec_id == CODEC_ID_PCM_S16LE) { - bytespersec = enc->sample_rate * blkalign; - } else { - bytespersec = enc->bit_rate / 8; - } - put_le32(pb, bytespersec); /* bytes per second */ - put_le16(pb, blkalign); /* block align */ - put_le16(pb, bps); /* bits per sample */ - if (enc->codec_id == CODEC_ID_MP3) { - put_le16(pb, 12); /* wav_extra_size */ - hdrsize += 12; - put_le16(pb, 1); /* wID */ - put_le32(pb, 2); /* fdwFlags */ - put_le16(pb, 1152); /* nBlockSize */ - put_le16(pb, 1); /* nFramesPerBlock */ - put_le16(pb, 1393); /* nCodecDelay */ - } else if (enc->codec_id == CODEC_ID_MP2) { - put_le16(pb, 22); /* wav_extra_size */ - hdrsize += 22; - put_le16(pb, 2); /* fwHeadLayer */ - put_le32(pb, enc->bit_rate); /* dwHeadBitrate */ - put_le16(pb, enc->channels == 2 ? 1 : 8); /* fwHeadMode */ - put_le16(pb, 0); /* fwHeadModeExt */ - put_le16(pb, 1); /* wHeadEmphasis */ - put_le16(pb, 16); /* fwHeadFlags */ - put_le32(pb, 0); /* dwPTSLow */ - put_le32(pb, 0); /* dwPTSHigh */ - } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) { - put_le16(pb, 2); /* wav_extra_size */ - put_le16(pb, ((enc->block_align - 4 * enc->channels) / (4 * enc->channels)) * 8 + 1); /* wSamplesPerBlock */ - } else - put_le16(pb, 0); /* wav_extra_size */ - - return hdrsize; -} - -/* We could be given one of the three possible structures here: - * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure - * is an expansion of the previous one with the fields added - * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and - * WAVEFORMATEX adds 'WORD cbSize' and basically makes itself - * an openended structure. - */ -void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size) -{ - int id; - - id = get_le16(pb); - codec->codec_type = CODEC_TYPE_AUDIO; - codec->codec_tag = id; - codec->channels = get_le16(pb); - codec->sample_rate = get_le32(pb); - codec->bit_rate = get_le32(pb) * 8; - codec->block_align = get_le16(pb); - if (size == 14) { /* We're dealing with plain vanilla WAVEFORMAT */ - codec->bits_per_sample = 8; - }else - codec->bits_per_sample = get_le16(pb); - codec->codec_id = wav_codec_get_id(id, codec->bits_per_sample); - - if (size > 16) { /* We're obviously dealing with WAVEFORMATEX */ - codec->extradata_size = get_le16(pb); - if (codec->extradata_size > 0) { - if (codec->extradata_size > size - 18) - codec->extradata_size = size - 18; - codec->extradata = av_mallocz(codec->extradata_size); - get_buffer(pb, codec->extradata, codec->extradata_size); - } else - codec->extradata_size = 0; - - /* It is possible for the chunk to contain garbage at the end */ - if (size - codec->extradata_size - 18 > 0) - url_fskip(pb, size - codec->extradata_size - 18); - } -} - - -int wav_codec_get_id(unsigned int tag, int bps) -{ - int id; - id = codec_get_id(codec_wav_tags, tag); - if (id <= 0) - return id; - /* handle specific u8 codec */ - if (id == CODEC_ID_PCM_S16LE && bps == 8) - id = CODEC_ID_PCM_U8; - return id; -} - -typedef struct { - offset_t data; -} WAVContext; - -static int wav_write_header(AVFormatContext *s) -{ - WAVContext *wav = s->priv_data; - ByteIOContext *pb = &s->pb; - offset_t fmt; - - put_tag(pb, "RIFF"); - put_le32(pb, 0); /* file length */ - put_tag(pb, "WAVE"); - - /* format header */ - fmt = start_tag(pb, "fmt "); - if (put_wav_header(pb, &s->streams[0]->codec) < 0) { - av_free(wav); - return -1; - } - end_tag(pb, fmt); - - /* data header */ - wav->data = start_tag(pb, "data"); - - put_flush_packet(pb); - - return 0; -} - -static int wav_write_packet(AVFormatContext *s, int stream_index_ptr, - const uint8_t *buf, int size, int64_t pts) -{ - ByteIOContext *pb = &s->pb; - put_buffer(pb, buf, size); - return 0; -} - -static int wav_write_trailer(AVFormatContext *s) -{ - ByteIOContext *pb = &s->pb; - WAVContext *wav = s->priv_data; - offset_t file_size; - - if (!url_is_streamed(&s->pb)) { - end_tag(pb, wav->data); - - /* update file size */ - file_size = url_ftell(pb); - url_fseek(pb, 4, SEEK_SET); - put_le32(pb, (uint32_t)(file_size - 8)); - url_fseek(pb, file_size, SEEK_SET); - - put_flush_packet(pb); - } - return 0; -} - -/* return the size of the found tag */ -/* XXX: > 2GB ? */ -static int find_tag(ByteIOContext *pb, uint32_t tag1) -{ - unsigned int tag; - int size; - - for(;;) { - if (url_feof(pb)) - return -1; - tag = get_le32(pb); - size = get_le32(pb); - if (tag == tag1) - break; - url_fseek(pb, size, SEEK_CUR); - } - if (size < 0) - size = 0x7fffffff; - return size; -} - -static int wav_probe(AVProbeData *p) -{ - /* check file header */ - if (p->buf_size <= 32) - return 0; - if (p->buf[0] == 'R' && p->buf[1] == 'I' && - p->buf[2] == 'F' && p->buf[3] == 'F' && - p->buf[8] == 'W' && p->buf[9] == 'A' && - p->buf[10] == 'V' && p->buf[11] == 'E') - return AVPROBE_SCORE_MAX; - else - return 0; -} - -/* wav input */ -static int wav_read_header(AVFormatContext *s, - AVFormatParameters *ap) -{ - int size; - unsigned int tag; - ByteIOContext *pb = &s->pb; - AVStream *st; - - /* check RIFF header */ - tag = get_le32(pb); - - if (tag != MKTAG('R', 'I', 'F', 'F')) - return -1; - get_le32(pb); /* file size */ - tag = get_le32(pb); - if (tag != MKTAG('W', 'A', 'V', 'E')) - return -1; - - /* parse fmt header */ - size = find_tag(pb, MKTAG('f', 'm', 't', ' ')); - if (size < 0) - return -1; - st = av_new_stream(s, 0); - if (!st) - return AVERROR_NOMEM; - - get_wav_header(pb, &st->codec, size); - - size = find_tag(pb, MKTAG('d', 'a', 't', 'a')); - if (size < 0) - return -1; - return 0; -} - -#define MAX_SIZE 4096 - -static int wav_read_packet(AVFormatContext *s, - AVPacket *pkt) -{ - int ret; - - if (url_feof(&s->pb)) - return -EIO; - if (av_new_packet(pkt, MAX_SIZE)) - return -EIO; - pkt->stream_index = 0; - - ret = get_buffer(&s->pb, pkt->data, pkt->size); - if (ret < 0) - av_free_packet(pkt); - /* note: we need to modify the packet size here to handle the last - packet */ - pkt->size = ret; - return ret; -} - -static int wav_read_close(AVFormatContext *s) -{ - return 0; -} - -static AVInputFormat wav_iformat = { - "wav", - "wav format", - 0, - wav_probe, - wav_read_header, - wav_read_packet, - wav_read_close, -}; - -static AVOutputFormat wav_oformat = { - "wav", - "wav format", - "audio/x-wav", - "wav", - sizeof(WAVContext), - CODEC_ID_PCM_S16LE, - CODEC_ID_NONE, - wav_write_header, - wav_write_packet, - wav_write_trailer, -}; - -int wav_init(void) -{ - av_register_input_format(&wav_iformat); - av_register_output_format(&wav_oformat); - return 0; -}