X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;f=aac_afh.c;h=fdb0339c7715bf9e319c03bdf6990ecac1814313;hb=87e0ea6a858f3727d0f6c8a0ace440146bb68afe;hp=8550a8ac6801d421e5cf186b48360922face11e8;hpb=bd28ec9a64884d70917c4fdea1a3a70c91758f83;p=paraslash.git diff --git a/aac_afh.c b/aac_afh.c index 8550a8ac..fdb0339c 100644 --- a/aac_afh.c +++ b/aac_afh.c @@ -1,8 +1,4 @@ -/* - * Copyright (C) 2006 Andre Noll - * - * Licensed under the GPL v2. For licencing details see COPYING. - */ +/* Copyright (C) 2006 Andre Noll , see file COPYING. */ /* * based in parts on libfaad, Copyright (C) 2003-2005 M. Bakker, * Ahead Software AG @@ -14,11 +10,7 @@ #include #include "para.h" - -/* To get the mp4ff_tag_t and mp4ff_metadata_t typedefs. */ -#define USE_TAGGING -#include - +#include "mp4.h" #include "error.h" #include "portable_io.h" #include "afh.h" @@ -31,25 +23,20 @@ struct aac_afh_context { size_t mapsize; size_t fpos; int32_t track; - mp4ff_t *mp4ff; - mp4AudioSpecificConfig masc; - mp4ff_callback_t cb; + struct mp4 *mp4; + struct mp4_callback cb; }; static uint32_t aac_afh_read_cb(void *user_data, void *dest, uint32_t want) { struct aac_afh_context *c = user_data; - uint32_t have, rv; + size_t have, rv; - if (want == 0 || c->fpos >= c->mapsize) { - PARA_INFO_LOG("failed attempt to read %u bytes @%zu\n", want, - c->fpos); - errno = EAGAIN; - return -1; - } + if (want == 0 || c->fpos >= c->mapsize) + return 0; have = c->mapsize - c->fpos; - rv = PARA_MIN(have, want); - PARA_DEBUG_LOG("reading %u bytes @%zu\n", rv, c->fpos); + rv = PARA_MIN(have, (size_t)want); + PARA_DEBUG_LOG("reading %zu bytes @%zu\n", rv, c->fpos); memcpy(dest, c->map + c->fpos, rv); c->fpos += rv; return rv; @@ -62,25 +49,15 @@ static uint32_t aac_afh_seek_cb(void *user_data, uint64_t pos) return 0; } -static int32_t aac_afh_get_track(mp4ff_t *mp4ff, mp4AudioSpecificConfig *masc) +static int32_t aac_afh_get_track(struct mp4 *mp4) { - int32_t i, rc, num_tracks = mp4ff_total_tracks(mp4ff); + int32_t i, num_tracks = mp4_total_tracks(mp4); assert(num_tracks >= 0); - for (i = 0; i < num_tracks; i++) { - unsigned char *buf = NULL; - unsigned buf_size = 0; - - mp4ff_get_decoder_config(mp4ff, i, &buf, &buf_size); - if (buf) { - rc = NeAACDecAudioSpecificConfig(buf, buf_size, masc); - free(buf); - if (rc < 0) - continue; + for (i = 0; i < num_tracks; i++) + if (mp4_is_audio_track(mp4, i)) return i; - } - } - return -1; /* no audio track */ + return -E_MP4_TRACK; /* no audio track */ } static int aac_afh_open(const void *map, size_t mapsize, void **afh_context) @@ -95,18 +72,18 @@ static int aac_afh_open(const void *map, size_t mapsize, void **afh_context) c->cb.seek = aac_afh_seek_cb; c->cb.user_data = c; - ret = -E_MP4FF_OPEN; - c->mp4ff = mp4ff_open_read(&c->cb); - if (!c->mp4ff) + ret = -E_MP4_OPEN; + c->mp4 = mp4_open_read(&c->cb); + if (!c->mp4) goto free_ctx; - c->track = aac_afh_get_track(c->mp4ff, &c->masc); - ret = -E_MP4FF_TRACK; - if (c->track < 0) - goto close_mp4ff; + ret = aac_afh_get_track(c->mp4); + if (ret < 0) + goto close_mp4; + c->track = ret; *afh_context = c; return 0; -close_mp4ff: - mp4ff_close(c->mp4ff); +close_mp4: + mp4_close(c->mp4); free_ctx: free(c); *afh_context = NULL; @@ -116,51 +93,36 @@ free_ctx: static void aac_afh_close(void *afh_context) { struct aac_afh_context *c = afh_context; - mp4ff_close(c->mp4ff); + mp4_close(c->mp4); free(c); } -/** - * Libmp4ff function to reposition the file to the given sample. - * - * \param f The opaque handle returned by mp4ff_open_read(). - * \param track The number of the (audio) track. - * \param sample Destination. - * - * We need this function to obtain the offset of the sample within the audio - * file. Unfortunately, it is not exposed in the mp4ff header. - * - * \return This function always returns 0. - */ -int32_t mp4ff_set_sample_position(mp4ff_t *f, const int32_t track, const int32_t sample); - -static int aac_afh_get_chunk(long unsigned chunk_num, void *afh_context, - const char **buf, size_t *len) +static int aac_afh_get_chunk(uint32_t chunk_num, void *afh_context, + const char **buf, uint32_t *len) { struct aac_afh_context *c = afh_context; int32_t ss; size_t offset; assert(chunk_num <= INT_MAX); - /* this function always returns zero */ - mp4ff_set_sample_position(c->mp4ff, c->track, chunk_num); + mp4_set_sample_position(c->mp4, c->track, chunk_num); offset = c->fpos; - ss = mp4ff_read_sample_getsize(c->mp4ff, c->track, chunk_num); + ss = mp4_get_sample_size(c->mp4, c->track, chunk_num); if (ss <= 0) - return -E_MP4FF_BAD_SAMPLE; + return -E_MP4_BAD_SAMPLE; assert(ss + offset <= c->mapsize); *buf = c->map + offset; *len = ss; return 1; } -static void _aac_afh_get_taginfo(const mp4ff_t *mp4ff, struct taginfo *tags) +static void _aac_afh_get_taginfo(const struct mp4 *mp4, struct taginfo *tags) { - mp4ff_meta_get_artist(mp4ff, &tags->artist); - mp4ff_meta_get_title(mp4ff, &tags->title); - mp4ff_meta_get_date(mp4ff, &tags->year); - mp4ff_meta_get_album(mp4ff, &tags->album); - mp4ff_meta_get_comment(mp4ff, &tags->comment); + mp4_meta_get_artist(mp4, &tags->artist); + mp4_meta_get_title(mp4, &tags->title); + mp4_meta_get_date(mp4, &tags->year); + mp4_meta_get_album(mp4, &tags->album); + mp4_meta_get_comment(mp4, &tags->comment); } /* @@ -172,47 +134,44 @@ static int aac_get_file_info(char *map, size_t numbytes, __a_unused int fd, int ret; int32_t rv; struct aac_afh_context *c; - int64_t tmp; + uint64_t milliseconds; const char *buf; - size_t sz; - uint32_t n; + uint32_t n, len; ret = aac_afh_open(map, numbytes, (void **)&c); if (ret < 0) return ret; - ret = -E_MP4FF_BAD_SAMPLERATE; - rv = mp4ff_get_sample_rate(c->mp4ff, c->track); + ret = -E_MP4_BAD_SAMPLERATE; + rv = mp4_get_sample_rate(c->mp4, c->track); if (rv <= 0) goto close; afhi->frequency = rv; - ret = -E_MP4FF_BAD_CHANNEL_COUNT; - rv = mp4ff_get_channel_count(c->mp4ff, c->track); + ret = -E_MP4_BAD_CHANNEL_COUNT; + rv = mp4_get_channel_count(c->mp4, c->track); if (rv <= 0) goto close; afhi->channels = rv; - ret = -E_MP4FF_BAD_SAMPLE_COUNT; - rv = mp4ff_num_samples(c->mp4ff, c->track); + ret = -E_MP4_BAD_SAMPLE_COUNT; + rv = mp4_num_samples(c->mp4, c->track); if (rv <= 0) goto close; afhi->chunks_total = rv; afhi->max_chunk_size = 0; for (n = 0; n < afhi->chunks_total; n++) { - if (aac_afh_get_chunk(n, c, &buf, &sz) < 0) + if (aac_afh_get_chunk(n, c, &buf, &len) < 0) break; - afhi->max_chunk_size = PARA_MAX((size_t)afhi->max_chunk_size, sz); + afhi->max_chunk_size = PARA_MAX(afhi->max_chunk_size, len); } - - tmp = c->masc.sbr_present_flag == 1? 2048 : 1024; - afhi->seconds_total = tmp * afhi->chunks_total / afhi->frequency; - ms2tv(1000 * tmp / afhi->frequency, &afhi->chunk_tv); - - if (aac_afh_get_chunk(0, c, &buf, &sz) >= 0) + milliseconds = mp4_get_duration(c->mp4, c->track); + afhi->seconds_total = milliseconds / 1000; + ms2tv(milliseconds / afhi->chunks_total, &afhi->chunk_tv); + if (aac_afh_get_chunk(0, c, &buf, &len) >= 0) numbytes -= buf - map; afhi->bitrate = 8 * numbytes / afhi->seconds_total / 1000; - _aac_afh_get_taginfo(c->mp4ff, &afhi->tags); + _aac_afh_get_taginfo(c->mp4, &afhi->tags); ret = 1; close: aac_afh_close(c); @@ -244,14 +203,14 @@ static uint32_t aac_afh_meta_truncate_cb(void *user_data) return ftruncate(fd, offset); } -static void replace_tag(mp4ff_tag_t *tag, const char *new_val, bool *found) +static void replace_tag(struct mp4_tag *tag, const char *new_val, bool *found) { free(tag->value); tag->value = para_strdup(new_val); *found = true; } -static void add_tag(mp4ff_metadata_t *md, const char *item, const char *value) +static void add_tag(struct mp4_metadata *md, const char *item, const char *value) { md->tags[md->count].item = para_strdup(item); md->tags[md->count].value = para_strdup(value); @@ -263,9 +222,9 @@ static int aac_afh_rewrite_tags(const char *map, size_t mapsize, { int ret, i; int32_t rv; - mp4ff_metadata_t metadata; - mp4ff_t *mp4ff; - mp4ff_callback_t cb = { + struct mp4_metadata metadata; + struct mp4 *mp4; + struct mp4_callback cb = { .read = aac_afh_meta_read_cb, .seek = aac_afh_meta_seek_cb, .write = aac_afh_meta_write_cb, @@ -280,24 +239,23 @@ static int aac_afh_rewrite_tags(const char *map, size_t mapsize, return ret; lseek(fd, 0, SEEK_SET); - mp4ff = mp4ff_open_read_metaonly(&cb); - if (!mp4ff) - return -E_MP4FF_OPEN; + mp4 = mp4_open_meta(&cb); + if (!mp4) + return -E_MP4_OPEN; - ret = -E_MP4FF_META_READ; - rv = mp4ff_meta_get_num_items(mp4ff); + ret = -E_MP4_META_READ; + rv = mp4_meta_get_num_items(mp4); if (rv < 0) goto close; metadata.count = rv; PARA_NOTICE_LOG("%d metadata item(s) found\n", rv); - metadata.tags = para_malloc((metadata.count + 5) * sizeof(mp4ff_tag_t)); + metadata.tags = para_malloc((metadata.count + 5) * sizeof(struct mp4_tag)); for (i = 0; i < metadata.count; i++) { - mp4ff_tag_t *tag = metadata.tags + i; + struct mp4_tag *tag = metadata.tags + i; - ret = -E_MP4FF_META_READ; - if (mp4ff_meta_get_by_index(mp4ff, i, - &tag->item, &tag->value) < 0) + ret = -E_MP4_META_READ; + if (!mp4_meta_get_by_index(mp4, i, &tag->item, &tag->value)) goto free_tags; PARA_INFO_LOG("found: %s: %s\n", tag->item, tag->value); if (!strcmp(tag->item, "artist")) @@ -321,8 +279,8 @@ static int aac_afh_rewrite_tags(const char *map, size_t mapsize, add_tag(&metadata, "date", tags->year); if (!found_comment) add_tag(&metadata, "comment", tags->comment); - ret = -E_MP4FF_META_WRITE; - if (mp4ff_meta_update(&cb, &metadata) < 0) + ret = -E_MP4_META_WRITE; + if (!mp4_meta_update(&cb, &metadata)) goto free_tags; ret = 1; free_tags: @@ -332,22 +290,22 @@ free_tags: } free(metadata.tags); close: - mp4ff_close(mp4ff); + mp4_close(mp4); return ret; } static const char * const aac_suffixes[] = {"m4a", "mp4", NULL}; + /** - * the init function of the aac audio format handler + * The audio format handler for the Advanced Audio Codec. * - * \param afh pointer to the struct to initialize + * This is only compiled in if the faad library is installed. */ -void aac_afh_init(struct audio_format_handler *afh) -{ - afh->get_file_info = aac_get_file_info, - afh->suffixes = aac_suffixes; - afh->rewrite_tags = aac_afh_rewrite_tags; - afh->open = aac_afh_open; - afh->get_chunk = aac_afh_get_chunk; - afh->close = aac_afh_close; -} +const struct audio_format_handler aac_afh = { + .get_file_info = aac_get_file_info, + .suffixes = aac_suffixes, + .rewrite_tags = aac_afh_rewrite_tags, + .open = aac_afh_open, + .get_chunk = aac_afh_get_chunk, + .close = aac_afh_close, +};