chasing indexing error

1 files changed, 0 insertions, 518 deletions

diff --git a/ffmpeg/libavformat/mp3enc.c b/ffmpeg/libavformat/mp3enc.c
deleted file mode 100644
index a5f672b..0000000
--- a/ffmpeg/libavformat/mp3enc.c
+++ /dev/null
@@ -1,518 +0,0 @@
-/*
- * MP3 muxer
- * Copyright (c) 2003 Fabrice Bellard
- *
- * 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 "avio_internal.h"
-#include "id3v1.h"
-#include "id3v2.h"
-#include "rawenc.h"
-#include "libavutil/avstring.h"
-#include "libavcodec/mpegaudio.h"
-#include "libavcodec/mpegaudiodata.h"
-#include "libavcodec/mpegaudiodecheader.h"
-#include "libavutil/intreadwrite.h"
-#include "libavutil/opt.h"
-#include "libavutil/dict.h"
-#include "libavutil/avassert.h"
-
-static int id3v1_set_string(AVFormatContext *s, const char *key,
-                            uint8_t *buf, int buf_size)
-{
-    AVDictionaryEntry *tag;
-    if ((tag = av_dict_get(s->metadata, key, NULL, 0)))
-        av_strlcpy(buf, tag->value, buf_size);
-    return !!tag;
-}
-
-static int id3v1_create_tag(AVFormatContext *s, uint8_t *buf)
-{
-    AVDictionaryEntry *tag;
-    int i, count = 0;
-
-    memset(buf, 0, ID3v1_TAG_SIZE); /* fail safe */
-    buf[0] = 'T';
-    buf[1] = 'A';
-    buf[2] = 'G';
-    /* we knowingly overspecify each tag length by one byte to compensate for the mandatory null byte added by av_strlcpy */
-    count += id3v1_set_string(s, "TIT2",    buf +  3, 30 + 1);       //title
-    count += id3v1_set_string(s, "TPE1",    buf + 33, 30 + 1);       //author|artist
-    count += id3v1_set_string(s, "TALB",    buf + 63, 30 + 1);       //album
-    count += id3v1_set_string(s, "TDRL",    buf + 93,  4 + 1);       //date
-    count += id3v1_set_string(s, "comment", buf + 97, 30 + 1);
-    if ((tag = av_dict_get(s->metadata, "TRCK", NULL, 0))) { //track
-        buf[125] = 0;
-        buf[126] = atoi(tag->value);
-        count++;
-    }
-    buf[127] = 0xFF; /* default to unknown genre */
-    if ((tag = av_dict_get(s->metadata, "TCON", NULL, 0))) { //genre
-        for(i = 0; i <= ID3v1_GENRE_MAX; i++) {
-            if (!av_strcasecmp(tag->value, ff_id3v1_genre_str[i])) {
-                buf[127] = i;
-                count++;
-                break;
-            }
-        }
-    }
-    return count;
-}
-
-#define XING_NUM_BAGS 400
-#define XING_TOC_SIZE 100
-// maximum size of the xing frame: offset/Xing/flags/frames/size/TOC
-#define XING_MAX_SIZE (32 + 4 + 4 + 4 + 4 + XING_TOC_SIZE)
-
-typedef struct MP3Context {
-    const AVClass *class;
-    ID3v2EncContext id3;
-    int id3v2_version;
-    int write_id3v1;
-
-    /* xing header */
-    int64_t xing_offset;
-    int32_t frames;
-    int32_t size;
-    uint32_t want;
-    uint32_t seen;
-    uint32_t pos;
-    uint64_t bag[XING_NUM_BAGS];
-    int initial_bitrate;
-    int has_variable_bitrate;
-
-    /* index of the audio stream */
-    int audio_stream_idx;
-    /* number of attached pictures we still need to write */
-    int pics_to_write;
-
-    /* audio packets are queued here until we get all the attached pictures */
-    AVPacketList *queue, *queue_end;
-} MP3Context;
-
-static const uint8_t xing_offtbl[2][2] = {{32, 17}, {17, 9}};
-
-/*
- * Write an empty XING header and initialize respective data.
- */
-static int mp3_write_xing(AVFormatContext *s)
-{
-    MP3Context       *mp3 = s->priv_data;
-    AVCodecContext *codec = s->streams[mp3->audio_stream_idx]->codec;
-    int              bitrate_idx;
-    int              best_bitrate_idx = -1;
-    int              best_bitrate_error= INT_MAX;
-    int              xing_offset;
-    int32_t          header, mask;
-    MPADecodeHeader  c;
-    int              srate_idx, ver = 0, i, channels;
-    int              needed;
-    const char      *vendor = (codec->flags & CODEC_FLAG_BITEXACT) ? "Lavf" : LIBAVFORMAT_IDENT;
-
-    if (!s->pb->seekable)
-        return 0;
-
-    for (i = 0; i < FF_ARRAY_ELEMS(avpriv_mpa_freq_tab); i++) {
-        const uint16_t base_freq = avpriv_mpa_freq_tab[i];
-
-        if      (codec->sample_rate == base_freq)     ver = 0x3; // MPEG 1
-        else if (codec->sample_rate == base_freq / 2) ver = 0x2; // MPEG 2
-        else if (codec->sample_rate == base_freq / 4) ver = 0x0; // MPEG 2.5
-        else continue;
-
-        srate_idx = i;
-        break;
-    }
-    if (i == FF_ARRAY_ELEMS(avpriv_mpa_freq_tab)) {
-        av_log(s, AV_LOG_WARNING, "Unsupported sample rate, not writing Xing header.\n");
-        return -1;
-    }
-
-    switch (codec->channels) {
-    case 1:  channels = MPA_MONO;                                          break;
-    case 2:  channels = MPA_STEREO;                                        break;
-    default: av_log(s, AV_LOG_WARNING, "Unsupported number of channels, "
-                    "not writing Xing header.\n");
-             return -1;
-    }
-
-    /* dummy MPEG audio header */
-    header  =  0xffU                                 << 24; // sync
-    header |= (0x7 << 5 | ver << 3 | 0x1 << 1 | 0x1) << 16; // sync/audio-version/layer 3/no crc*/
-    header |= (srate_idx << 2) <<  8;
-    header |= channels << 6;
-
-    for (bitrate_idx=1; bitrate_idx<15; bitrate_idx++) {
-        int error;
-        avpriv_mpegaudio_decode_header(&c, header | (bitrate_idx << (4+8)));
-        error= FFABS(c.bit_rate - codec->bit_rate);
-        if(error < best_bitrate_error){
-            best_bitrate_error= error;
-            best_bitrate_idx  = bitrate_idx;
-        }
-    }
-    av_assert0(best_bitrate_idx >= 0);
-
-    for (bitrate_idx= best_bitrate_idx;; bitrate_idx++) {
-        if (15 == bitrate_idx)
-            return -1;
-        mask = bitrate_idx << (4+8);
-        header |= mask;
-        avpriv_mpegaudio_decode_header(&c, header);
-        xing_offset=xing_offtbl[c.lsf == 1][c.nb_channels == 1];
-        needed = 4              // header
-               + xing_offset
-               + 4              // xing tag
-               + 4              // frames/size/toc flags
-               + 4              // frames
-               + 4              // size
-               + XING_TOC_SIZE   // toc
-               + 24
-               ;
-
-        if (needed <= c.frame_size)
-            break;
-        header &= ~mask;
-    }
-
-    avio_wb32(s->pb, header);
-
-    ffio_fill(s->pb, 0, xing_offset);
-    mp3->xing_offset = avio_tell(s->pb);
-    ffio_wfourcc(s->pb, "Xing");
-    avio_wb32(s->pb, 0x01 | 0x02 | 0x04);  // frames / size / TOC
-
-    mp3->size = c.frame_size;
-    mp3->want=1;
-    mp3->seen=0;
-    mp3->pos=0;
-
-    avio_wb32(s->pb, 0);  // frames
-    avio_wb32(s->pb, 0);  // size
-
-    // toc
-    for (i = 0; i < XING_TOC_SIZE; ++i)
-        avio_w8(s->pb, (uint8_t)(255 * i / XING_TOC_SIZE));
-
-    for (i = 0; i < strlen(vendor); ++i)
-        avio_w8(s->pb, vendor[i]);
-    for (; i < 21; ++i)
-        avio_w8(s->pb, 0);
-    avio_wb24(s->pb, FFMAX(codec->delay - 528 - 1, 0)<<12);
-
-    ffio_fill(s->pb, 0, c.frame_size - needed);
-
-    return 0;
-}
-
-/*
- * Add a frame to XING data.
- * Following lame's "VbrTag.c".
- */
-static void mp3_xing_add_frame(MP3Context *mp3, AVPacket *pkt)
-{
-    int i;
-
-    mp3->frames++;
-    mp3->seen++;
-    mp3->size += pkt->size;
-
-    if (mp3->want == mp3->seen) {
-        mp3->bag[mp3->pos] = mp3->size;
-
-        if (XING_NUM_BAGS == ++mp3->pos) {
-            /* shrink table to half size by throwing away each second bag. */
-            for (i = 1; i < XING_NUM_BAGS; i += 2)
-                mp3->bag[i >> 1] = mp3->bag[i];
-
-            /* double wanted amount per bag. */
-            mp3->want *= 2;
-            /* adjust current position to half of table size. */
-            mp3->pos = XING_NUM_BAGS / 2;
-        }
-
-        mp3->seen = 0;
-    }
-}
-
-static int mp3_write_audio_packet(AVFormatContext *s, AVPacket *pkt)
-{
-    MP3Context  *mp3 = s->priv_data;
-
-    if (pkt->data && pkt->size >= 4) {
-        MPADecodeHeader c;
-        int av_unused base;
-        uint32_t head = AV_RB32(pkt->data);
-
-        if (ff_mpa_check_header(head) < 0) {
-            av_log(s, AV_LOG_WARNING, "Audio packet of size %d (starting with %08X...) "
-                   "is invalid, writing it anyway.\n", pkt->size, head);
-            return ff_raw_write_packet(s, pkt);
-        }
-        avpriv_mpegaudio_decode_header(&c, head);
-
-        if (!mp3->initial_bitrate)
-            mp3->initial_bitrate = c.bit_rate;
-        if ((c.bit_rate == 0) || (mp3->initial_bitrate != c.bit_rate))
-            mp3->has_variable_bitrate = 1;
-
-#ifdef FILTER_VBR_HEADERS
-        /* filter out XING and INFO headers. */
-        base = 4 + xing_offtbl[c.lsf == 1][c.nb_channels == 1];
-
-        if (base + 4 <= pkt->size) {
-            uint32_t v = AV_RB32(pkt->data + base);
-
-            if (MKBETAG('X','i','n','g') == v || MKBETAG('I','n','f','o') == v)
-                return 0;
-        }
-
-        /* filter out VBRI headers. */
-        base = 4 + 32;
-
-        if (base + 4 <= pkt->size && MKBETAG('V','B','R','I') == AV_RB32(pkt->data + base))
-            return 0;
-#endif
-
-        if (mp3->xing_offset)
-            mp3_xing_add_frame(mp3, pkt);
-    }
-
-    return ff_raw_write_packet(s, pkt);
-}
-
-static int mp3_queue_flush(AVFormatContext *s)
-{
-    MP3Context *mp3 = s->priv_data;
-    AVPacketList *pktl;
-    int ret = 0, write = 1;
-
-    ff_id3v2_finish(&mp3->id3, s->pb);
-    mp3_write_xing(s);
-
-    while ((pktl = mp3->queue)) {
-        if (write && (ret = mp3_write_audio_packet(s, &pktl->pkt)) < 0)
-            write = 0;
-        av_free_packet(&pktl->pkt);
-        mp3->queue = pktl->next;
-        av_freep(&pktl);
-    }
-    mp3->queue_end = NULL;
-    return ret;
-}
-
-static void mp3_update_xing(AVFormatContext *s)
-{
-    MP3Context  *mp3 = s->priv_data;
-    int i;
-
-    /* replace "Xing" identification string with "Info" for CBR files. */
-    if (!mp3->has_variable_bitrate) {
-        avio_seek(s->pb, mp3->xing_offset, SEEK_SET);
-        ffio_wfourcc(s->pb, "Info");
-    }
-
-    avio_seek(s->pb, mp3->xing_offset + 8, SEEK_SET);
-    avio_wb32(s->pb, mp3->frames);
-    avio_wb32(s->pb, mp3->size);
-
-    avio_w8(s->pb, 0);  // first toc entry has to be zero.
-
-    for (i = 1; i < XING_TOC_SIZE; ++i) {
-        int j = i * mp3->pos / XING_TOC_SIZE;
-        int seek_point = 256LL * mp3->bag[j] / mp3->size;
-        avio_w8(s->pb, FFMIN(seek_point, 255));
-    }
-
-    avio_seek(s->pb, 0, SEEK_END);
-}
-
-static int mp3_write_trailer(struct AVFormatContext *s)
-{
-    uint8_t buf[ID3v1_TAG_SIZE];
-    MP3Context *mp3 = s->priv_data;
-
-    if (mp3->pics_to_write) {
-        av_log(s, AV_LOG_WARNING, "No packets were sent for some of the "
-               "attached pictures.\n");
-        mp3_queue_flush(s);
-    }
-
-    /* write the id3v1 tag */
-    if (mp3->write_id3v1 && id3v1_create_tag(s, buf) > 0) {
-        avio_write(s->pb, buf, ID3v1_TAG_SIZE);
-    }
-
-    if (mp3->xing_offset)
-        mp3_update_xing(s);
-
-    return 0;
-}
-
-static int query_codec(enum AVCodecID id, int std_compliance)
-{
-    const CodecMime *cm= ff_id3v2_mime_tags;
-    while(cm->id != AV_CODEC_ID_NONE) {
-        if(id == cm->id)
-            return MKTAG('A', 'P', 'I', 'C');
-        cm++;
-    }
-    return -1;
-}
-
-#if CONFIG_MP2_MUXER
-AVOutputFormat ff_mp2_muxer = {
-    .name              = "mp2",
-    .long_name         = NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"),
-    .mime_type         = "audio/x-mpeg",
-    .extensions        = "mp2,m2a,mpa",
-    .audio_codec       = AV_CODEC_ID_MP2,
-    .video_codec       = AV_CODEC_ID_NONE,
-    .write_packet      = ff_raw_write_packet,
-    .flags             = AVFMT_NOTIMESTAMPS,
-};
-#endif
-
-#if CONFIG_MP3_MUXER
-
-static const AVOption options[] = {
-    { "id3v2_version", "Select ID3v2 version to write. Currently 3 and 4 are supported.",
-      offsetof(MP3Context, id3v2_version), AV_OPT_TYPE_INT, {.i64 = 4}, 3, 4, AV_OPT_FLAG_ENCODING_PARAM},
-    { "write_id3v1", "Enable ID3v1 writing. ID3v1 tags are written in UTF-8 which may not be supported by most software.",
-      offsetof(MP3Context, write_id3v1), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
-    { NULL },
-};
-
-static const AVClass mp3_muxer_class = {
-    .class_name     = "MP3 muxer",
-    .item_name      = av_default_item_name,
-    .option         = options,
-    .version        = LIBAVUTIL_VERSION_INT,
-};
-
-static int mp3_write_packet(AVFormatContext *s, AVPacket *pkt)
-{
-    MP3Context *mp3 = s->priv_data;
-
-    if (pkt->stream_index == mp3->audio_stream_idx) {
-        if (mp3->pics_to_write) {
-            /* buffer audio packets until we get all the pictures */
-            AVPacketList *pktl = av_mallocz(sizeof(*pktl));
-            if (!pktl)
-                return AVERROR(ENOMEM);
-
-            pktl->pkt     = *pkt;
-            pktl->pkt.buf = av_buffer_ref(pkt->buf);
-            if (!pktl->pkt.buf) {
-                av_freep(&pktl);
-                return AVERROR(ENOMEM);
-            }
-
-            if (mp3->queue_end)
-                mp3->queue_end->next = pktl;
-            else
-                mp3->queue = pktl;
-            mp3->queue_end = pktl;
-        } else
-            return mp3_write_audio_packet(s, pkt);
-    } else {
-        int ret;
-
-        /* warn only once for each stream */
-        if (s->streams[pkt->stream_index]->nb_frames == 1) {
-            av_log(s, AV_LOG_WARNING, "Got more than one picture in stream %d,"
-                   " ignoring.\n", pkt->stream_index);
-        }
-        if (!mp3->pics_to_write || s->streams[pkt->stream_index]->nb_frames >= 1)
-            return 0;
-
-        if ((ret = ff_id3v2_write_apic(s, &mp3->id3, pkt)) < 0)
-            return ret;
-        mp3->pics_to_write--;
-
-        /* flush the buffered audio packets */
-        if (!mp3->pics_to_write &&
-            (ret = mp3_queue_flush(s)) < 0)
-            return ret;
-    }
-
-    return 0;
-}
-
-/**
- * Write an ID3v2 header at beginning of stream
- */
-
-static int mp3_write_header(struct AVFormatContext *s)
-{
-    MP3Context  *mp3 = s->priv_data;
-    int ret, i;
-
-    /* check the streams -- we want exactly one audio and arbitrary number of
-     * video (attached pictures) */
-    mp3->audio_stream_idx = -1;
-    for (i = 0; i < s->nb_streams; i++) {
-        AVStream *st = s->streams[i];
-        if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
-            if (mp3->audio_stream_idx >= 0 || st->codec->codec_id != AV_CODEC_ID_MP3) {
-                av_log(s, AV_LOG_ERROR, "Invalid audio stream. Exactly one MP3 "
-                       "audio stream is required.\n");
-                return AVERROR(EINVAL);
-            }
-            mp3->audio_stream_idx = i;
-        } else if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO) {
-            av_log(s, AV_LOG_ERROR, "Only audio streams and pictures are allowed in MP3.\n");
-            return AVERROR(EINVAL);
-        }
-    }
-    if (mp3->audio_stream_idx < 0) {
-        av_log(s, AV_LOG_ERROR, "No audio stream present.\n");
-        return AVERROR(EINVAL);
-    }
-    mp3->pics_to_write = s->nb_streams - 1;
-
-    ff_id3v2_start(&mp3->id3, s->pb, mp3->id3v2_version, ID3v2_DEFAULT_MAGIC);
-    ret = ff_id3v2_write_metadata(s, &mp3->id3);
-    if (ret < 0)
-        return ret;
-
-    if (!mp3->pics_to_write) {
-        ff_id3v2_finish(&mp3->id3, s->pb);
-        mp3_write_xing(s);
-    }
-
-    return 0;
-}
-
-AVOutputFormat ff_mp3_muxer = {
-    .name              = "mp3",
-    .long_name         = NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"),
-    .mime_type         = "audio/x-mpeg",
-    .extensions        = "mp3",
-    .priv_data_size    = sizeof(MP3Context),
-    .audio_codec       = AV_CODEC_ID_MP3,
-    .video_codec       = AV_CODEC_ID_PNG,
-    .write_header      = mp3_write_header,
-    .write_packet      = mp3_write_packet,
-    .write_trailer     = mp3_write_trailer,
-    .query_codec       = query_codec,
-    .flags             = AVFMT_NOTIMESTAMPS,
-    .priv_class        = &mp3_muxer_class,
-};
-#endif