diff options
Diffstat (limited to 'ffmpeg1/libavformat/wavdec.c')
| -rw-r--r-- | ffmpeg1/libavformat/wavdec.c | 687 |
1 files changed, 0 insertions, 687 deletions
diff --git a/ffmpeg1/libavformat/wavdec.c b/ffmpeg1/libavformat/wavdec.c deleted file mode 100644 index 782fa64..0000000 --- a/ffmpeg1/libavformat/wavdec.c +++ /dev/null @@ -1,687 +0,0 @@ -/* - * WAV demuxer - * Copyright (c) 2001, 2002 Fabrice Bellard - * - * Sony Wave64 demuxer - * RF64 demuxer - * Copyright (c) 2009 Daniel Verkamp - * - * 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 "libavutil/avassert.h" -#include "libavutil/dict.h" -#include "libavutil/log.h" -#include "libavutil/mathematics.h" -#include "libavutil/opt.h" -#include "avformat.h" -#include "internal.h" -#include "avio_internal.h" -#include "pcm.h" -#include "riff.h" -#include "w64.h" -#include "avio.h" -#include "metadata.h" -#include "spdif.h" - -typedef struct WAVDemuxContext { - const AVClass *class; - int64_t data_end; - int w64; - int64_t smv_data_ofs; - int smv_block_size; - int smv_frames_per_jpeg; - int smv_block; - int smv_last_stream; - int smv_eof; - int audio_eof; - int ignore_length; - int spdif; -} WAVDemuxContext; - - -#if CONFIG_WAV_DEMUXER - -static int64_t next_tag(AVIOContext *pb, uint32_t *tag) -{ - *tag = avio_rl32(pb); - return avio_rl32(pb); -} - -/* return the size of the found tag */ -static int64_t find_tag(AVIOContext *pb, uint32_t tag1) -{ - unsigned int tag; - int64_t size; - - for (;;) { - if (url_feof(pb)) - return -1; - size = next_tag(pb, &tag); - if (tag == tag1) - break; - avio_skip(pb, size); - } - return size; -} - -static int wav_probe(AVProbeData *p) -{ - /* check file header */ - if (p->buf_size <= 32) - return 0; - if (!memcmp(p->buf + 8, "WAVE", 4)) { - if (!memcmp(p->buf, "RIFF", 4)) - /* - Since ACT demuxer has standard WAV header at top of it's own, - returning score is decreased to avoid probe conflict - between ACT and WAV. - */ - return AVPROBE_SCORE_MAX - 1; - else if (!memcmp(p->buf, "RF64", 4) && - !memcmp(p->buf + 12, "ds64", 4)) - return AVPROBE_SCORE_MAX; - } - return 0; -} - -static void handle_stream_probing(AVStream *st) -{ - if (st->codec->codec_id == AV_CODEC_ID_PCM_S16LE) { - st->request_probe = AVPROBE_SCORE_MAX/2; - st->probe_packets = FFMIN(st->probe_packets, 4); - } -} - -static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st) -{ - AVIOContext *pb = s->pb; - int ret; - - /* parse fmt header */ - *st = avformat_new_stream(s, NULL); - if (!*st) - return AVERROR(ENOMEM); - - ret = ff_get_wav_header(pb, (*st)->codec, size); - if (ret < 0) - return ret; - handle_stream_probing(*st); - - (*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW; - - avpriv_set_pts_info(*st, 64, 1, (*st)->codec->sample_rate); - - return 0; -} - -static inline int wav_parse_bext_string(AVFormatContext *s, const char *key, - int length) -{ - char temp[257]; - int ret; - - av_assert0(length <= sizeof(temp)); - if ((ret = avio_read(s->pb, temp, length)) < 0) - return ret; - - temp[length] = 0; - - if (strlen(temp)) - return av_dict_set(&s->metadata, key, temp, 0); - - return 0; -} - -static int wav_parse_bext_tag(AVFormatContext *s, int64_t size) -{ - char temp[131], *coding_history; - int ret, x; - uint64_t time_reference; - int64_t umid_parts[8], umid_mask = 0; - - if ((ret = wav_parse_bext_string(s, "description", 256)) < 0 || - (ret = wav_parse_bext_string(s, "originator", 32)) < 0 || - (ret = wav_parse_bext_string(s, "originator_reference", 32)) < 0 || - (ret = wav_parse_bext_string(s, "origination_date", 10)) < 0 || - (ret = wav_parse_bext_string(s, "origination_time", 8)) < 0) - return ret; - - time_reference = avio_rl64(s->pb); - snprintf(temp, sizeof(temp), "%"PRIu64, time_reference); - if ((ret = av_dict_set(&s->metadata, "time_reference", temp, 0)) < 0) - return ret; - - /* check if version is >= 1, in which case an UMID may be present */ - if (avio_rl16(s->pb) >= 1) { - for (x = 0; x < 8; x++) - umid_mask |= umid_parts[x] = avio_rb64(s->pb); - - if (umid_mask) { - /* the string formatting below is per SMPTE 330M-2004 Annex C */ - if (umid_parts[4] == 0 && umid_parts[5] == 0 && umid_parts[6] == 0 && umid_parts[7] == 0) { - /* basic UMID */ - snprintf(temp, sizeof(temp), "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64, - umid_parts[0], umid_parts[1], umid_parts[2], umid_parts[3]); - } else { - /* extended UMID */ - snprintf(temp, sizeof(temp), "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64 - "%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64, - umid_parts[0], umid_parts[1], umid_parts[2], umid_parts[3], - umid_parts[4], umid_parts[5], umid_parts[6], umid_parts[7]); - } - - if ((ret = av_dict_set(&s->metadata, "umid", temp, 0)) < 0) - return ret; - } - - avio_skip(s->pb, 190); - } else - avio_skip(s->pb, 254); - - if (size > 602) { - /* CodingHistory present */ - size -= 602; - - if (!(coding_history = av_malloc(size+1))) - return AVERROR(ENOMEM); - - if ((ret = avio_read(s->pb, coding_history, size)) < 0) - return ret; - - coding_history[size] = 0; - if ((ret = av_dict_set(&s->metadata, "coding_history", coding_history, - AV_DICT_DONT_STRDUP_VAL)) < 0) - return ret; - } - - return 0; -} - -static const AVMetadataConv wav_metadata_conv[] = { - {"description", "comment" }, - {"originator", "encoded_by" }, - {"origination_date", "date" }, - {"origination_time", "creation_time"}, - {0}, -}; - -/* wav input */ -static int wav_read_header(AVFormatContext *s) -{ - int64_t size, av_uninit(data_size); - int64_t sample_count=0; - int rf64; - uint32_t tag; - AVIOContext *pb = s->pb; - AVStream *st = NULL; - WAVDemuxContext *wav = s->priv_data; - int ret, got_fmt = 0; - int64_t next_tag_ofs, data_ofs = -1; - - wav->smv_data_ofs = -1; - - /* check RIFF header */ - tag = avio_rl32(pb); - - rf64 = tag == MKTAG('R', 'F', '6', '4'); - if (!rf64 && tag != MKTAG('R', 'I', 'F', 'F')) - return -1; - avio_rl32(pb); /* file size */ - tag = avio_rl32(pb); - if (tag != MKTAG('W', 'A', 'V', 'E')) - return -1; - - if (rf64) { - if (avio_rl32(pb) != MKTAG('d', 's', '6', '4')) - return -1; - size = avio_rl32(pb); - if (size < 24) - return -1; - avio_rl64(pb); /* RIFF size */ - data_size = avio_rl64(pb); - sample_count = avio_rl64(pb); - if (data_size < 0 || sample_count < 0) { - av_log(s, AV_LOG_ERROR, "negative data_size and/or sample_count in " - "ds64: data_size = %"PRId64", sample_count = %"PRId64"\n", - data_size, sample_count); - return AVERROR_INVALIDDATA; - } - avio_skip(pb, size - 24); /* skip rest of ds64 chunk */ - - } - - for (;;) { - AVStream *vst; - size = next_tag(pb, &tag); - next_tag_ofs = avio_tell(pb) + size; - - if (url_feof(pb)) - break; - - switch (tag) { - case MKTAG('f', 'm', 't', ' '): - /* only parse the first 'fmt ' tag found */ - if (!got_fmt && (ret = wav_parse_fmt_tag(s, size, &st)) < 0) { - return ret; - } else if (got_fmt) - av_log(s, AV_LOG_WARNING, "found more than one 'fmt ' tag\n"); - - got_fmt = 1; - break; - case MKTAG('d', 'a', 't', 'a'): - if (!got_fmt) { - av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'data' tag\n"); - return AVERROR_INVALIDDATA; - } - - if (rf64) { - next_tag_ofs = wav->data_end = avio_tell(pb) + data_size; - } else { - data_size = size; - next_tag_ofs = wav->data_end = size ? next_tag_ofs : INT64_MAX; - } - - data_ofs = avio_tell(pb); - - /* don't look for footer metadata if we can't seek or if we don't - * know where the data tag ends - */ - if (!pb->seekable || (!rf64 && !size)) - goto break_loop; - break; - case MKTAG('f','a','c','t'): - if (!sample_count) - sample_count = avio_rl32(pb); - break; - case MKTAG('b','e','x','t'): - if ((ret = wav_parse_bext_tag(s, size)) < 0) - return ret; - break; - case MKTAG('S','M','V','0'): - if (!got_fmt) { - av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'SMV0' tag\n"); - return AVERROR_INVALIDDATA; - } - // SMV file, a wav file with video appended. - if (size != MKTAG('0','2','0','0')) { - av_log(s, AV_LOG_ERROR, "Unknown SMV version found\n"); - goto break_loop; - } - av_log(s, AV_LOG_DEBUG, "Found SMV data\n"); - vst = avformat_new_stream(s, NULL); - if (!vst) - return AVERROR(ENOMEM); - avio_r8(pb); - vst->id = 1; - vst->codec->codec_type = AVMEDIA_TYPE_VIDEO; - vst->codec->codec_id = AV_CODEC_ID_MJPEG; - vst->codec->width = avio_rl24(pb); - vst->codec->height = avio_rl24(pb); - size = avio_rl24(pb); - wav->smv_data_ofs = avio_tell(pb) + (size - 5) * 3; - avio_rl24(pb); - wav->smv_block_size = avio_rl24(pb); - avpriv_set_pts_info(vst, 32, 1, avio_rl24(pb)); - vst->duration = avio_rl24(pb); - avio_rl24(pb); - avio_rl24(pb); - wav->smv_frames_per_jpeg = avio_rl24(pb); - goto break_loop; - case MKTAG('L', 'I', 'S', 'T'): - if (size < 4) { - av_log(s, AV_LOG_ERROR, "too short LIST tag\n"); - return AVERROR_INVALIDDATA; - } - switch (avio_rl32(pb)) { - case MKTAG('I', 'N', 'F', 'O'): - ff_read_riff_info(s, size - 4); - } - break; - } - - /* seek to next tag unless we know that we'll run into EOF */ - if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) || - avio_seek(pb, next_tag_ofs, SEEK_SET) < 0) { - break; - } - } -break_loop: - if (data_ofs < 0) { - av_log(s, AV_LOG_ERROR, "no 'data' tag found\n"); - return AVERROR_INVALIDDATA; - } - - avio_seek(pb, data_ofs, SEEK_SET); - - if (!sample_count && st->codec->channels && av_get_bits_per_sample(st->codec->codec_id) && wav->data_end <= avio_size(pb)) - sample_count = (data_size<<3) / (st->codec->channels * (uint64_t)av_get_bits_per_sample(st->codec->codec_id)); - if (sample_count) - st->duration = sample_count; - - ff_metadata_conv_ctx(s, NULL, wav_metadata_conv); - ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv); - - return 0; -} - -/** Find chunk with w64 GUID by skipping over other chunks - * @return the size of the found chunk - */ -static int64_t find_guid(AVIOContext *pb, const uint8_t guid1[16]) -{ - uint8_t guid[16]; - int64_t size; - - while (!url_feof(pb)) { - avio_read(pb, guid, 16); - size = avio_rl64(pb); - if (size <= 24) - return -1; - if (!memcmp(guid, guid1, 16)) - return size; - avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24); - } - return -1; -} - -#define MAX_SIZE 4096 - -static int wav_read_packet(AVFormatContext *s, - AVPacket *pkt) -{ - int ret, size; - int64_t left; - AVStream *st; - WAVDemuxContext *wav = s->priv_data; - - if (CONFIG_SPDIF_DEMUXER && wav->spdif == 0 && - s->streams[0]->codec->codec_tag == 1) { - enum AVCodecID codec; - ret = ff_spdif_probe(s->pb->buffer, s->pb->buf_end - s->pb->buffer, - &codec); - if (ret > AVPROBE_SCORE_MAX / 2) { - s->streams[0]->codec->codec_id = codec; - wav->spdif = 1; - } else { - wav->spdif = -1; - } - } - if (CONFIG_SPDIF_DEMUXER && wav->spdif == 1) - return ff_spdif_read_packet(s, pkt); - - if (wav->smv_data_ofs > 0) { - int64_t audio_dts, video_dts; -smv_retry: - audio_dts = s->streams[0]->cur_dts; - video_dts = s->streams[1]->cur_dts; - if (audio_dts != AV_NOPTS_VALUE && video_dts != AV_NOPTS_VALUE) { - audio_dts = av_rescale_q(audio_dts, s->streams[0]->time_base, AV_TIME_BASE_Q); - video_dts = av_rescale_q(video_dts, s->streams[1]->time_base, AV_TIME_BASE_Q); - wav->smv_last_stream = video_dts >= audio_dts; - } - wav->smv_last_stream = !wav->smv_last_stream; - wav->smv_last_stream |= wav->audio_eof; - wav->smv_last_stream &= !wav->smv_eof; - if (wav->smv_last_stream) { - uint64_t old_pos = avio_tell(s->pb); - uint64_t new_pos = wav->smv_data_ofs + - wav->smv_block * wav->smv_block_size; - if (avio_seek(s->pb, new_pos, SEEK_SET) < 0) { - ret = AVERROR_EOF; - goto smv_out; - } - size = avio_rl24(s->pb); - ret = av_get_packet(s->pb, pkt, size); - if (ret < 0) - goto smv_out; - pkt->pos -= 3; - pkt->pts = wav->smv_block * wav->smv_frames_per_jpeg; - wav->smv_block++; - pkt->stream_index = 1; -smv_out: - avio_seek(s->pb, old_pos, SEEK_SET); - if (ret == AVERROR_EOF) { - wav->smv_eof = 1; - goto smv_retry; - } - return ret; - } - } - - st = s->streams[0]; - - left = wav->data_end - avio_tell(s->pb); - if (wav->ignore_length) - left= INT_MAX; - if (left <= 0){ - if (CONFIG_W64_DEMUXER && wav->w64) - left = find_guid(s->pb, ff_w64_guid_data) - 24; - else - left = find_tag(s->pb, MKTAG('d', 'a', 't', 'a')); - if (left < 0) { - wav->audio_eof = 1; - if (wav->smv_data_ofs > 0 && !wav->smv_eof) - goto smv_retry; - return AVERROR_EOF; - } - wav->data_end= avio_tell(s->pb) + left; - } - - size = MAX_SIZE; - if (st->codec->block_align > 1) { - if (size < st->codec->block_align) - size = st->codec->block_align; - size = (size / st->codec->block_align) * st->codec->block_align; - } - size = FFMIN(size, left); - ret = av_get_packet(s->pb, pkt, size); - if (ret < 0) - return ret; - pkt->stream_index = 0; - - return ret; -} - -static int wav_read_seek(AVFormatContext *s, - int stream_index, int64_t timestamp, int flags) -{ - WAVDemuxContext *wav = s->priv_data; - AVStream *st; - wav->smv_eof = 0; - wav->audio_eof = 0; - if (wav->smv_data_ofs > 0) { - int64_t smv_timestamp = timestamp; - if (stream_index == 0) - smv_timestamp = av_rescale_q(timestamp, s->streams[0]->time_base, s->streams[1]->time_base); - else - timestamp = av_rescale_q(smv_timestamp, s->streams[1]->time_base, s->streams[0]->time_base); - wav->smv_block = smv_timestamp / wav->smv_frames_per_jpeg; - } - - st = s->streams[0]; - switch (st->codec->codec_id) { - case AV_CODEC_ID_MP2: - case AV_CODEC_ID_MP3: - case AV_CODEC_ID_AC3: - case AV_CODEC_ID_DTS: - /* use generic seeking with dynamically generated indexes */ - return -1; - default: - break; - } - return ff_pcm_read_seek(s, stream_index, timestamp, flags); -} - -#define OFFSET(x) offsetof(WAVDemuxContext, x) -#define DEC AV_OPT_FLAG_DECODING_PARAM -static const AVOption demux_options[] = { - { "ignore_length", "Ignore length", OFFSET(ignore_length), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, DEC }, - { NULL }, -}; - -static const AVClass wav_demuxer_class = { - .class_name = "WAV demuxer", - .item_name = av_default_item_name, - .option = demux_options, - .version = LIBAVUTIL_VERSION_INT, -}; -AVInputFormat ff_wav_demuxer = { - .name = "wav", - .long_name = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"), - .priv_data_size = sizeof(WAVDemuxContext), - .read_probe = wav_probe, - .read_header = wav_read_header, - .read_packet = wav_read_packet, - .read_seek = wav_read_seek, - .flags = AVFMT_GENERIC_INDEX, - .codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 }, - .priv_class = &wav_demuxer_class, -}; -#endif /* CONFIG_WAV_DEMUXER */ - - -#if CONFIG_W64_DEMUXER -static int w64_probe(AVProbeData *p) -{ - if (p->buf_size <= 40) - return 0; - if (!memcmp(p->buf, ff_w64_guid_riff, 16) && - !memcmp(p->buf + 24, ff_w64_guid_wave, 16)) - return AVPROBE_SCORE_MAX; - else - return 0; -} - -static int w64_read_header(AVFormatContext *s) -{ - int64_t size, data_ofs = 0; - AVIOContext *pb = s->pb; - WAVDemuxContext *wav = s->priv_data; - AVStream *st; - uint8_t guid[16]; - int ret; - - avio_read(pb, guid, 16); - if (memcmp(guid, ff_w64_guid_riff, 16)) - return -1; - - if (avio_rl64(pb) < 16 + 8 + 16 + 8 + 16 + 8) /* riff + wave + fmt + sizes */ - return -1; - - avio_read(pb, guid, 16); - if (memcmp(guid, ff_w64_guid_wave, 16)) { - av_log(s, AV_LOG_ERROR, "could not find wave guid\n"); - return -1; - } - - wav->w64 = 1; - - st = avformat_new_stream(s, NULL); - if (!st) - return AVERROR(ENOMEM); - - while (!url_feof(pb)) { - if (avio_read(pb, guid, 16) != 16) - break; - size = avio_rl64(pb); - if (size <= 24 || INT64_MAX - size < avio_tell(pb)) - return AVERROR_INVALIDDATA; - - if (!memcmp(guid, ff_w64_guid_fmt, 16)) { - /* subtract chunk header size - normal wav file doesn't count it */ - ret = ff_get_wav_header(pb, st->codec, size - 24); - if (ret < 0) - return ret; - avio_skip(pb, FFALIGN(size, INT64_C(8)) - size); - - avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate); - } else if (!memcmp(guid, ff_w64_guid_fact, 16)) { - int64_t samples; - - samples = avio_rl64(pb); - if (samples > 0) - st->duration = samples; - } else if (!memcmp(guid, ff_w64_guid_data, 16)) { - wav->data_end = avio_tell(pb) + size - 24; - - data_ofs = avio_tell(pb); - if (!pb->seekable) - break; - - avio_skip(pb, size - 24); - } else if (!memcmp(guid, ff_w64_guid_summarylist, 16)) { - int64_t start, end, cur; - uint32_t count, chunk_size, i; - - start = avio_tell(pb); - end = start + size; - count = avio_rl32(pb); - - for (i = 0; i < count; i++) { - char chunk_key[5], *value; - - if (url_feof(pb) || (cur = avio_tell(pb)) < 0 || cur > end - 8 /* = tag + size */) - break; - - chunk_key[4] = 0; - avio_read(pb, chunk_key, 4); - chunk_size = avio_rl32(pb); - - value = av_mallocz(chunk_size + 1); - if (!value) - return AVERROR(ENOMEM); - - ret = avio_get_str16le(pb, chunk_size, value, chunk_size); - avio_skip(pb, chunk_size - ret); - - av_dict_set(&s->metadata, chunk_key, value, AV_DICT_DONT_STRDUP_VAL); - } - - avio_skip(pb, end - avio_tell(pb)); - } else { - av_log(s, AV_LOG_DEBUG, "unknown guid: "FF_PRI_GUID"\n", FF_ARG_GUID(guid)); - avio_skip(pb, size - 24); - } - } - - if (!data_ofs) - return AVERROR_EOF; - - ff_metadata_conv_ctx(s, NULL, wav_metadata_conv); - ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv); - - handle_stream_probing(st); - st->need_parsing = AVSTREAM_PARSE_FULL_RAW; - - avio_seek(pb, data_ofs, SEEK_SET); - - return 0; -} - -AVInputFormat ff_w64_demuxer = { - .name = "w64", - .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"), - .priv_data_size = sizeof(WAVDemuxContext), - .read_probe = w64_probe, - .read_header = w64_read_header, - .read_packet = wav_read_packet, - .read_seek = wav_read_seek, - .flags = AVFMT_GENERIC_INDEX, - .codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 }, -}; -#endif /* CONFIG_W64_DEMUXER */ |