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Diffstat (limited to 'ffmpeg/libavformat/cafenc.c')
| -rw-r--r-- | ffmpeg/libavformat/cafenc.c | 285 |
1 files changed, 0 insertions, 285 deletions
diff --git a/ffmpeg/libavformat/cafenc.c b/ffmpeg/libavformat/cafenc.c deleted file mode 100644 index ae36b85..0000000 --- a/ffmpeg/libavformat/cafenc.c +++ /dev/null @@ -1,285 +0,0 @@ -/* - * Core Audio Format muxer - * Copyright (c) 2011 Carl Eugen Hoyos - * - * 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 "avformat.h" -#include "caf.h" -#include "isom.h" -#include "avio_internal.h" -#include "libavutil/intfloat.h" -#include "libavutil/dict.h" - -typedef struct { - int64_t data; - uint8_t *pkt_sizes; - int size_buffer_size; - int size_entries_used; - int packets; -} CAFContext; - -static uint32_t codec_flags(enum AVCodecID codec_id) { - switch (codec_id) { - case AV_CODEC_ID_PCM_F32BE: - case AV_CODEC_ID_PCM_F64BE: - return 1; //< kCAFLinearPCMFormatFlagIsFloat - case AV_CODEC_ID_PCM_S16LE: - case AV_CODEC_ID_PCM_S24LE: - case AV_CODEC_ID_PCM_S32LE: - return 2; //< kCAFLinearPCMFormatFlagIsLittleEndian - case AV_CODEC_ID_PCM_F32LE: - case AV_CODEC_ID_PCM_F64LE: - return 3; //< kCAFLinearPCMFormatFlagIsFloat | kCAFLinearPCMFormatFlagIsLittleEndian - default: - return 0; - } -} - -static uint32_t samples_per_packet(enum AVCodecID codec_id, int channels) { - switch (codec_id) { - case AV_CODEC_ID_PCM_S8: - case AV_CODEC_ID_PCM_S16LE: - case AV_CODEC_ID_PCM_S16BE: - case AV_CODEC_ID_PCM_S24LE: - case AV_CODEC_ID_PCM_S24BE: - case AV_CODEC_ID_PCM_S32LE: - case AV_CODEC_ID_PCM_S32BE: - case AV_CODEC_ID_PCM_F32LE: - case AV_CODEC_ID_PCM_F32BE: - case AV_CODEC_ID_PCM_F64LE: - case AV_CODEC_ID_PCM_F64BE: - case AV_CODEC_ID_PCM_ALAW: - case AV_CODEC_ID_PCM_MULAW: - return 1; - case AV_CODEC_ID_MACE3: - case AV_CODEC_ID_MACE6: - return 6; - case AV_CODEC_ID_ADPCM_IMA_QT: - return 64; - case AV_CODEC_ID_AMR_NB: - case AV_CODEC_ID_GSM: - case AV_CODEC_ID_ILBC: - case AV_CODEC_ID_QCELP: - return 160; - case AV_CODEC_ID_GSM_MS: - return 320; - case AV_CODEC_ID_MP1: - return 384; - case AV_CODEC_ID_MP2: - case AV_CODEC_ID_MP3: - return 1152; - case AV_CODEC_ID_AC3: - return 1536; - case AV_CODEC_ID_QDM2: - return 2048 * channels; - case AV_CODEC_ID_ALAC: - return 4096; - case AV_CODEC_ID_ADPCM_IMA_WAV: - return (1024 - 4 * channels) * 8 / (4 * channels) + 1; - case AV_CODEC_ID_ADPCM_MS: - return (1024 - 7 * channels) * 2 / channels + 2; - default: - return 0; - } -} - -static int caf_write_header(AVFormatContext *s) -{ - AVIOContext *pb = s->pb; - AVCodecContext *enc = s->streams[0]->codec; - CAFContext *caf = s->priv_data; - AVDictionaryEntry *t = NULL; - unsigned int codec_tag = ff_codec_get_tag(ff_codec_caf_tags, enc->codec_id); - int64_t chunk_size = 0; - - if (s->nb_streams != 1) { - av_log(s, AV_LOG_ERROR, "CAF files have exactly one stream\n"); - return AVERROR(EINVAL); - } - - switch (enc->codec_id) { - case AV_CODEC_ID_AAC: - case AV_CODEC_ID_AC3: - av_log(s, AV_LOG_ERROR, "muxing codec currently unsupported\n"); - return AVERROR_PATCHWELCOME; - } - - switch (enc->codec_id) { - case AV_CODEC_ID_PCM_S8: - case AV_CODEC_ID_PCM_S16LE: - case AV_CODEC_ID_PCM_S16BE: - case AV_CODEC_ID_PCM_S24LE: - case AV_CODEC_ID_PCM_S24BE: - case AV_CODEC_ID_PCM_S32LE: - case AV_CODEC_ID_PCM_S32BE: - case AV_CODEC_ID_PCM_F32LE: - case AV_CODEC_ID_PCM_F32BE: - case AV_CODEC_ID_PCM_F64LE: - case AV_CODEC_ID_PCM_F64BE: - case AV_CODEC_ID_PCM_ALAW: - case AV_CODEC_ID_PCM_MULAW: - codec_tag = MKTAG('l','p','c','m'); - } - - if (!codec_tag) { - av_log(s, AV_LOG_ERROR, "unsupported codec\n"); - return AVERROR_INVALIDDATA; - } - - if (!enc->block_align && !pb->seekable) { - av_log(s, AV_LOG_ERROR, "Muxing variable packet size not supported on non seekable output\n"); - return AVERROR_INVALIDDATA; - } - - ffio_wfourcc(pb, "caff"); //< mFileType - avio_wb16(pb, 1); //< mFileVersion - avio_wb16(pb, 0); //< mFileFlags - - ffio_wfourcc(pb, "desc"); //< Audio Description chunk - avio_wb64(pb, 32); //< mChunkSize - avio_wb64(pb, av_double2int(enc->sample_rate)); //< mSampleRate - avio_wl32(pb, codec_tag); //< mFormatID - avio_wb32(pb, codec_flags(enc->codec_id)); //< mFormatFlags - avio_wb32(pb, enc->block_align); //< mBytesPerPacket - avio_wb32(pb, samples_per_packet(enc->codec_id, enc->channels)); //< mFramesPerPacket - avio_wb32(pb, enc->channels); //< mChannelsPerFrame - avio_wb32(pb, av_get_bits_per_sample(enc->codec_id)); //< mBitsPerChannel - - if (enc->channel_layout) { - ffio_wfourcc(pb, "chan"); - avio_wb64(pb, 12); - ff_mov_write_chan(pb, enc->channel_layout); - } - - if (enc->codec_id == AV_CODEC_ID_ALAC) { - ffio_wfourcc(pb, "kuki"); - avio_wb64(pb, 12 + enc->extradata_size); - avio_write(pb, "\0\0\0\14frmaalac", 12); - avio_write(pb, enc->extradata, enc->extradata_size); - } else if (enc->codec_id == AV_CODEC_ID_AMR_NB) { - ffio_wfourcc(pb, "kuki"); - avio_wb64(pb, 29); - avio_write(pb, "\0\0\0\14frmasamr", 12); - avio_wb32(pb, 0x11); /* size */ - avio_write(pb, "samrFFMP", 8); - avio_w8(pb, 0); /* decoder version */ - - avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */ - avio_w8(pb, 0x00); /* Mode change period (no restriction) */ - avio_w8(pb, 0x01); /* Frames per sample */ - } else if (enc->codec_id == AV_CODEC_ID_QDM2) { - ffio_wfourcc(pb, "kuki"); - avio_wb64(pb, enc->extradata_size); - avio_write(pb, enc->extradata, enc->extradata_size); - } - - if (av_dict_count(s->metadata)) { - ffio_wfourcc(pb, "info"); //< Information chunk - while ((t = av_dict_get(s->metadata, "", t, AV_DICT_IGNORE_SUFFIX))) { - chunk_size += strlen(t->key) + strlen(t->value) + 2; - } - avio_wb64(pb, chunk_size + 4); - avio_wb32(pb, av_dict_count(s->metadata)); - t = NULL; - while ((t = av_dict_get(s->metadata, "", t, AV_DICT_IGNORE_SUFFIX))) { - avio_put_str(pb, t->key); - avio_put_str(pb, t->value); - } - } - - ffio_wfourcc(pb, "data"); //< Audio Data chunk - caf->data = avio_tell(pb); - avio_wb64(pb, -1); //< mChunkSize - avio_wb32(pb, 0); //< mEditCount - - avio_flush(pb); - return 0; -} - -static int caf_write_packet(AVFormatContext *s, AVPacket *pkt) -{ - CAFContext *caf = s->priv_data; - - avio_write(s->pb, pkt->data, pkt->size); - if (!s->streams[0]->codec->block_align) { - void *pkt_sizes = caf->pkt_sizes; - int i, alloc_size = caf->size_entries_used + 5; - if (alloc_size < 0) { - caf->pkt_sizes = NULL; - } else { - caf->pkt_sizes = av_fast_realloc(caf->pkt_sizes, - &caf->size_buffer_size, - alloc_size); - } - if (!caf->pkt_sizes) { - av_free(pkt_sizes); - return AVERROR(ENOMEM); - } - for (i = 4; i > 0; i--) { - unsigned top = pkt->size >> i * 7; - if (top) - caf->pkt_sizes[caf->size_entries_used++] = 128 | top; - } - caf->pkt_sizes[caf->size_entries_used++] = pkt->size & 127; - caf->packets++; - } - return 0; -} - -static int caf_write_trailer(AVFormatContext *s) -{ - CAFContext *caf = s->priv_data; - AVIOContext *pb = s->pb; - AVCodecContext *enc = s->streams[0]->codec; - - if (pb->seekable) { - int64_t file_size = avio_tell(pb); - - avio_seek(pb, caf->data, SEEK_SET); - avio_wb64(pb, file_size - caf->data - 8); - avio_seek(pb, file_size, SEEK_SET); - if (!enc->block_align) { - ffio_wfourcc(pb, "pakt"); - avio_wb64(pb, caf->size_entries_used + 24); - avio_wb64(pb, caf->packets); ///< mNumberPackets - avio_wb64(pb, caf->packets * samples_per_packet(enc->codec_id, enc->channels)); ///< mNumberValidFrames - avio_wb32(pb, 0); ///< mPrimingFrames - avio_wb32(pb, 0); ///< mRemainderFrames - avio_write(pb, caf->pkt_sizes, caf->size_entries_used); - caf->size_buffer_size = 0; - } - avio_flush(pb); - } - av_freep(&caf->pkt_sizes); - return 0; -} - -AVOutputFormat ff_caf_muxer = { - .name = "caf", - .long_name = NULL_IF_CONFIG_SMALL("Apple CAF (Core Audio Format)"), - .mime_type = "audio/x-caf", - .extensions = "caf", - .priv_data_size = sizeof(CAFContext), - .audio_codec = AV_CODEC_ID_PCM_S16BE, - .video_codec = AV_CODEC_ID_NONE, - .write_header = caf_write_header, - .write_packet = caf_write_packet, - .write_trailer = caf_write_trailer, - .codec_tag = (const AVCodecTag* const []){ff_codec_caf_tags, 0}, -}; 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