LCOV - code coverage report
Current view: top level - src/libavformat - aiffenc.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 89 160 55.6 %
Date: 2017-01-28 02:43:52 Functions: 4 5 80.0 %

          Line data    Source code
       1             : /*
       2             :  * AIFF/AIFF-C muxer
       3             :  * Copyright (c) 2006  Patrick Guimond
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  */
      21             : 
      22             : #include <stdint.h>
      23             : 
      24             : #include "libavutil/intfloat.h"
      25             : #include "libavutil/opt.h"
      26             : #include "avformat.h"
      27             : #include "internal.h"
      28             : #include "aiff.h"
      29             : #include "avio_internal.h"
      30             : #include "isom.h"
      31             : #include "id3v2.h"
      32             : 
      33             : typedef struct AIFFOutputContext {
      34             :     const AVClass *class;
      35             :     int64_t form;
      36             :     int64_t frames;
      37             :     int64_t ssnd;
      38             :     int audio_stream_idx;
      39             :     AVPacketList *pict_list;
      40             :     int write_id3v2;
      41             :     int id3v2_version;
      42             : } AIFFOutputContext;
      43             : 
      44           0 : static int put_id3v2_tags(AVFormatContext *s, AIFFOutputContext *aiff)
      45             : {
      46             :     int ret;
      47             :     uint64_t pos, end, size;
      48           0 :     ID3v2EncContext id3v2 = { 0 };
      49           0 :     AVIOContext *pb = s->pb;
      50           0 :     AVPacketList *pict_list = aiff->pict_list;
      51             : 
      52           0 :     if (!pb->seekable)
      53           0 :         return 0;
      54             : 
      55           0 :     if (!s->metadata && !aiff->pict_list)
      56           0 :         return 0;
      57             : 
      58           0 :     avio_wl32(pb, MKTAG('I', 'D', '3', ' '));
      59           0 :     avio_wb32(pb, 0);
      60           0 :     pos = avio_tell(pb);
      61             : 
      62           0 :     ff_id3v2_start(&id3v2, pb, aiff->id3v2_version, ID3v2_DEFAULT_MAGIC);
      63           0 :     ff_id3v2_write_metadata(s, &id3v2);
      64           0 :     while (pict_list) {
      65           0 :         if ((ret = ff_id3v2_write_apic(s, &id3v2, &pict_list->pkt)) < 0)
      66           0 :             return ret;
      67           0 :         pict_list = pict_list->next;
      68             :     }
      69           0 :     ff_id3v2_finish(&id3v2, pb, s->metadata_header_padding);
      70             : 
      71           0 :     end = avio_tell(pb);
      72           0 :     size = end - pos;
      73             : 
      74             :     /* Update chunk size */
      75           0 :     avio_seek(pb, pos - 4, SEEK_SET);
      76           0 :     avio_wb32(pb, size);
      77           0 :     avio_seek(pb, end, SEEK_SET);
      78             : 
      79           0 :     if (size & 1)
      80           0 :         avio_w8(pb, 0);
      81             : 
      82           0 :     return 0;
      83             : }
      84             : 
      85          12 : static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
      86             : {
      87             :     AVDictionaryEntry *tag;
      88          12 :     AVIOContext *pb = s->pb;
      89             : 
      90          12 :     if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
      91           1 :         int size = strlen(tag->value);
      92             : 
      93           1 :         avio_wl32(pb, id);
      94           1 :         avio_wb32(pb, FFALIGN(size, 2));
      95           1 :         avio_write(pb, tag->value, size);
      96           1 :         if (size & 1)
      97           0 :             avio_w8(pb, 0);
      98             :     }
      99          12 : }
     100             : 
     101           3 : static int aiff_write_header(AVFormatContext *s)
     102             : {
     103           3 :     AIFFOutputContext *aiff = s->priv_data;
     104           3 :     AVIOContext *pb = s->pb;
     105             :     AVCodecParameters *par;
     106             :     uint64_t sample_rate;
     107           3 :     int i, aifc = 0;
     108             : 
     109           3 :     aiff->audio_stream_idx = -1;
     110           6 :     for (i = 0; i < s->nb_streams; i++) {
     111           3 :         AVStream *st = s->streams[i];
     112           3 :         if (aiff->audio_stream_idx < 0 && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
     113           3 :             aiff->audio_stream_idx = i;
     114           0 :         } else if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO) {
     115           0 :             av_log(s, AV_LOG_ERROR, "AIFF allows only one audio stream and a picture.\n");
     116           0 :             return AVERROR(EINVAL);
     117             :         }
     118             :     }
     119           3 :     if (aiff->audio_stream_idx < 0) {
     120           0 :         av_log(s, AV_LOG_ERROR, "No audio stream present.\n");
     121           0 :         return AVERROR(EINVAL);
     122             :     }
     123             : 
     124           3 :     par = s->streams[aiff->audio_stream_idx]->codecpar;
     125             : 
     126             :     /* First verify if format is ok */
     127           3 :     if (!par->codec_tag)
     128           0 :         return -1;
     129           3 :     if (par->codec_tag != MKTAG('N','O','N','E'))
     130           2 :         aifc = 1;
     131             : 
     132             :     /* FORM AIFF header */
     133           3 :     ffio_wfourcc(pb, "FORM");
     134           3 :     aiff->form = avio_tell(pb);
     135           3 :     avio_wb32(pb, 0);                    /* file length */
     136           3 :     ffio_wfourcc(pb, aifc ? "AIFC" : "AIFF");
     137             : 
     138           3 :     if (aifc) { // compressed audio
     139           2 :         if (!par->block_align) {
     140           0 :             av_log(s, AV_LOG_ERROR, "block align not set\n");
     141           0 :             return -1;
     142             :         }
     143             :         /* Version chunk */
     144           2 :         ffio_wfourcc(pb, "FVER");
     145           2 :         avio_wb32(pb, 4);
     146           2 :         avio_wb32(pb, 0xA2805140);
     147             :     }
     148             : 
     149           3 :     if (par->channels > 2 && par->channel_layout) {
     150           0 :         ffio_wfourcc(pb, "CHAN");
     151           0 :         avio_wb32(pb, 12);
     152           0 :         ff_mov_write_chan(pb, par->channel_layout);
     153             :     }
     154             : 
     155           3 :     put_meta(s, "title",     MKTAG('N', 'A', 'M', 'E'));
     156           3 :     put_meta(s, "author",    MKTAG('A', 'U', 'T', 'H'));
     157           3 :     put_meta(s, "copyright", MKTAG('(', 'c', ')', ' '));
     158           3 :     put_meta(s, "comment",   MKTAG('A', 'N', 'N', 'O'));
     159             : 
     160             :     /* Common chunk */
     161           3 :     ffio_wfourcc(pb, "COMM");
     162           3 :     avio_wb32(pb, aifc ? 24 : 18); /* size */
     163           3 :     avio_wb16(pb, par->channels);  /* Number of channels */
     164             : 
     165           3 :     aiff->frames = avio_tell(pb);
     166           3 :     avio_wb32(pb, 0);              /* Number of frames */
     167             : 
     168           3 :     if (!par->bits_per_coded_sample)
     169           0 :         par->bits_per_coded_sample = av_get_bits_per_sample(par->codec_id);
     170           3 :     if (!par->bits_per_coded_sample) {
     171           0 :         av_log(s, AV_LOG_ERROR, "could not compute bits per sample\n");
     172           0 :         return -1;
     173             :     }
     174           3 :     if (!par->block_align)
     175           0 :         par->block_align = (par->bits_per_coded_sample * par->channels) >> 3;
     176             : 
     177           3 :     avio_wb16(pb, par->bits_per_coded_sample); /* Sample size */
     178             : 
     179           3 :     sample_rate = av_double2int(par->sample_rate);
     180           3 :     avio_wb16(pb, (sample_rate >> 52) + (16383 - 1023));
     181           3 :     avio_wb64(pb, UINT64_C(1) << 63 | sample_rate << 11);
     182             : 
     183           3 :     if (aifc) {
     184           2 :         avio_wl32(pb, par->codec_tag);
     185           2 :         avio_wb16(pb, 0);
     186             :     }
     187             : 
     188           3 :     if (  (par->codec_tag == MKTAG('Q','D','M','2')
     189           3 :         || par->codec_tag == MKTAG('Q','c','l','p')) && par->extradata_size) {
     190           0 :         ffio_wfourcc(pb, "wave");
     191           0 :         avio_wb32(pb, par->extradata_size);
     192           0 :         avio_write(pb, par->extradata, par->extradata_size);
     193             :     }
     194             : 
     195             :     /* Sound data chunk */
     196           3 :     ffio_wfourcc(pb, "SSND");
     197           3 :     aiff->ssnd = avio_tell(pb);         /* Sound chunk size */
     198           3 :     avio_wb32(pb, 0);                    /* Sound samples data size */
     199           3 :     avio_wb32(pb, 0);                    /* Data offset */
     200           3 :     avio_wb32(pb, 0);                    /* Block-size (block align) */
     201             : 
     202           3 :     avpriv_set_pts_info(s->streams[aiff->audio_stream_idx], 64, 1,
     203           3 :                         s->streams[aiff->audio_stream_idx]->codecpar->sample_rate);
     204             : 
     205             :     /* Data is starting here */
     206           3 :     avio_flush(pb);
     207             : 
     208           3 :     return 0;
     209             : }
     210             : 
     211        8314 : static int aiff_write_packet(AVFormatContext *s, AVPacket *pkt)
     212             : {
     213        8314 :     AIFFOutputContext *aiff = s->priv_data;
     214        8314 :     AVIOContext *pb = s->pb;
     215        8314 :     if (pkt->stream_index == aiff->audio_stream_idx)
     216        8314 :         avio_write(pb, pkt->data, pkt->size);
     217             :     else {
     218             :         int ret;
     219             :         AVPacketList *pict_list, *last;
     220             : 
     221           0 :         if (s->streams[pkt->stream_index]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
     222           0 :             return 0;
     223             : 
     224             :         /* warn only once for each stream */
     225           0 :         if (s->streams[pkt->stream_index]->nb_frames == 1) {
     226           0 :             av_log(s, AV_LOG_WARNING, "Got more than one picture in stream %d,"
     227             :                    " ignoring.\n", pkt->stream_index);
     228             :         }
     229           0 :         if (s->streams[pkt->stream_index]->nb_frames >= 1)
     230           0 :             return 0;
     231             : 
     232           0 :         pict_list = av_mallocz(sizeof(AVPacketList));
     233           0 :         if (!pict_list)
     234           0 :             return AVERROR(ENOMEM);
     235             : 
     236           0 :         if ((ret = av_copy_packet(&pict_list->pkt, pkt)) < 0) {
     237           0 :             av_freep(&pict_list);
     238           0 :             return ret;
     239             :         }
     240             : 
     241           0 :         if (!aiff->pict_list)
     242           0 :             aiff->pict_list = pict_list;
     243             :         else {
     244           0 :             last = aiff->pict_list;
     245           0 :             while (last->next)
     246           0 :                 last = last->next;
     247           0 :             last->next = pict_list;
     248             :         }
     249             :     }
     250             : 
     251        8314 :     return 0;
     252             : }
     253             : 
     254           3 : static int aiff_write_trailer(AVFormatContext *s)
     255             : {
     256             :     int ret;
     257           3 :     AVIOContext *pb = s->pb;
     258           3 :     AIFFOutputContext *aiff = s->priv_data;
     259           3 :     AVPacketList *pict_list = aiff->pict_list;
     260           3 :     AVCodecParameters *par = s->streams[aiff->audio_stream_idx]->codecpar;
     261             : 
     262             :     /* Chunks sizes must be even */
     263             :     int64_t file_size, end_size;
     264           3 :     end_size = file_size = avio_tell(pb);
     265           3 :     if (file_size & 1) {
     266           0 :         avio_w8(pb, 0);
     267           0 :         end_size++;
     268             :     }
     269             : 
     270           3 :     if (s->pb->seekable) {
     271             :         /* Number of sample frames */
     272           3 :         avio_seek(pb, aiff->frames, SEEK_SET);
     273           3 :         avio_wb32(pb, (file_size - aiff->ssnd - 12) / par->block_align);
     274             : 
     275             :         /* Sound Data chunk size */
     276           3 :         avio_seek(pb, aiff->ssnd, SEEK_SET);
     277           3 :         avio_wb32(pb, file_size - aiff->ssnd - 4);
     278             : 
     279             :         /* return to the end */
     280           3 :         avio_seek(pb, end_size, SEEK_SET);
     281             : 
     282             :         /* Write ID3 tags */
     283           3 :         if (aiff->write_id3v2)
     284           0 :             if ((ret = put_id3v2_tags(s, aiff)) < 0)
     285           0 :                 return ret;
     286             : 
     287             :         /* File length */
     288           3 :         file_size = avio_tell(pb);
     289           3 :         avio_seek(pb, aiff->form, SEEK_SET);
     290           3 :         avio_wb32(pb, file_size - aiff->form - 4);
     291             : 
     292           3 :         avio_flush(pb);
     293             :     }
     294             : 
     295           6 :     while (pict_list) {
     296           0 :         AVPacketList *next = pict_list->next;
     297           0 :         av_packet_unref(&pict_list->pkt);
     298           0 :         av_freep(&pict_list);
     299           0 :         pict_list = next;
     300             :     }
     301             : 
     302           3 :     return 0;
     303             : }
     304             : 
     305             : #define OFFSET(x) offsetof(AIFFOutputContext, x)
     306             : #define ENC AV_OPT_FLAG_ENCODING_PARAM
     307             : static const AVOption options[] = {
     308             :     { "write_id3v2", "Enable ID3 tags writing.",
     309             :       OFFSET(write_id3v2), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, ENC },
     310             :     { "id3v2_version", "Select ID3v2 version to write. Currently 3 and 4 are supported.",
     311             :       OFFSET(id3v2_version), AV_OPT_TYPE_INT, {.i64 = 4}, 3, 4, ENC },
     312             :     { NULL },
     313             : };
     314             : 
     315             : static const AVClass aiff_muxer_class = {
     316             :     .class_name     = "AIFF muxer",
     317             :     .item_name      = av_default_item_name,
     318             :     .option         = options,
     319             :     .version        = LIBAVUTIL_VERSION_INT,
     320             : };
     321             : 
     322             : AVOutputFormat ff_aiff_muxer = {
     323             :     .name              = "aiff",
     324             :     .long_name         = NULL_IF_CONFIG_SMALL("Audio IFF"),
     325             :     .mime_type         = "audio/aiff",
     326             :     .extensions        = "aif,aiff,afc,aifc",
     327             :     .priv_data_size    = sizeof(AIFFOutputContext),
     328             :     .audio_codec       = AV_CODEC_ID_PCM_S16BE,
     329             :     .video_codec       = AV_CODEC_ID_PNG,
     330             :     .write_header      = aiff_write_header,
     331             :     .write_packet      = aiff_write_packet,
     332             :     .write_trailer     = aiff_write_trailer,
     333             :     .codec_tag         = (const AVCodecTag* const []){ ff_codec_aiff_tags, 0 },
     334             :     .priv_class        = &aiff_muxer_class,
     335             : };

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