making act segmenter

1 files changed, 0 insertions, 277 deletions

diff --git a/ffmpeg1/libavformat/xwma.c b/ffmpeg1/libavformat/xwma.c
deleted file mode 100644
index 0d40bd7..0000000
--- a/ffmpeg1/libavformat/xwma.c
+++ /dev/null
@@ -1,277 +0,0 @@
-/*
- * xWMA demuxer
- * Copyright (c) 2011 Max Horn
- *
- * 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 <inttypes.h>
-
-#include "avformat.h"
-#include "internal.h"
-#include "riff.h"
-
-/*
- * Demuxer for xWMA, a Microsoft audio container used by XAudio 2.
- */
-
-typedef struct {
-    int64_t data_end;
-} XWMAContext;
-
-static int xwma_probe(AVProbeData *p)
-{
-    if (!memcmp(p->buf, "RIFF", 4) && !memcmp(p->buf + 8, "XWMA", 4))
-        return AVPROBE_SCORE_MAX;
-    return 0;
-}
-
-static int xwma_read_header(AVFormatContext *s)
-{
-    int64_t size;
-    int ret;
-    uint32_t dpds_table_size = 0;
-    uint32_t *dpds_table = 0;
-    unsigned int tag;
-    AVIOContext *pb = s->pb;
-    AVStream *st;
-    XWMAContext *xwma = s->priv_data;
-    int i;
-
-    /* The following code is mostly copied from wav.c, with some
-     * minor alterations.
-     */
-
-    /* check RIFF header */
-    tag = avio_rl32(pb);
-    if (tag != MKTAG('R', 'I', 'F', 'F'))
-        return -1;
-    avio_rl32(pb); /* file size */
-    tag = avio_rl32(pb);
-    if (tag != MKTAG('X', 'W', 'M', 'A'))
-        return -1;
-
-    /* parse fmt header */
-    tag = avio_rl32(pb);
-    if (tag != MKTAG('f', 'm', 't', ' '))
-        return -1;
-    size = avio_rl32(pb);
-    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;
-    st->need_parsing = AVSTREAM_PARSE_NONE;
-
-    /* All xWMA files I have seen contained WMAv2 data. If there are files
-     * using WMA Pro or some other codec, then we need to figure out the right
-     * extradata for that. Thus, ask the user for feedback, but try to go on
-     * anyway.
-     */
-    if (st->codec->codec_id != AV_CODEC_ID_WMAV2) {
-        avpriv_request_sample(s, "Unexpected codec (tag 0x04%x; id %d)",
-                              st->codec->codec_tag, st->codec->codec_id);
-    } else {
-        /* In all xWMA files I have seen, there is no extradata. But the WMA
-         * codecs require extradata, so we provide our own fake extradata.
-         *
-         * First, check that there really was no extradata in the header. If
-         * there was, then try to use it, after asking the user to provide a
-         * sample of this unusual file.
-         */
-        if (st->codec->extradata_size != 0) {
-            /* Surprise, surprise: We *did* get some extradata. No idea
-             * if it will work, but just go on and try it, after asking
-             * the user for a sample.
-             */
-            avpriv_request_sample(s, "Unexpected extradata (%d bytes)",
-                                  st->codec->extradata_size);
-        } else {
-            st->codec->extradata_size = 6;
-            st->codec->extradata      = av_mallocz(6 + FF_INPUT_BUFFER_PADDING_SIZE);
-            if (!st->codec->extradata)
-                return AVERROR(ENOMEM);
-
-            /* setup extradata with our experimentally obtained value */
-            st->codec->extradata[4] = 31;
-        }
-    }
-
-    if (!st->codec->channels) {
-        av_log(s, AV_LOG_WARNING, "Invalid channel count: %d\n",
-               st->codec->channels);
-        return AVERROR_INVALIDDATA;
-    }
-    if (!st->codec->bits_per_coded_sample) {
-        av_log(s, AV_LOG_WARNING, "Invalid bits_per_coded_sample: %d\n",
-               st->codec->bits_per_coded_sample);
-        return AVERROR_INVALIDDATA;
-    }
-
-    /* set the sample rate */
-    avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
-
-    /* parse the remaining RIFF chunks */
-    for (;;) {
-        if (pb->eof_reached)
-            return -1;
-        /* read next chunk tag */
-        tag = avio_rl32(pb);
-        size = avio_rl32(pb);
-        if (tag == MKTAG('d', 'a', 't', 'a')) {
-            /* We assume that the data chunk comes last. */
-            break;
-        } else if (tag == MKTAG('d','p','d','s')) {
-            /* Quoting the MSDN xWMA docs on the dpds chunk: "Contains the
-             * decoded packet cumulative data size array, each element is the
-             * number of bytes accumulated after the corresponding xWMA packet
-             * is decoded in order."
-             *
-             * Each packet has size equal to st->codec->block_align, which in
-             * all cases I saw so far was always 2230. Thus, we can use the
-             * dpds data to compute a seeking index.
-             */
-
-            /* Error out if there is more than one dpds chunk. */
-            if (dpds_table) {
-                av_log(s, AV_LOG_ERROR, "two dpds chunks present\n");
-                return -1;
-            }
-
-            /* Compute the number of entries in the dpds chunk. */
-            if (size & 3) {  /* Size should be divisible by four */
-                av_log(s, AV_LOG_WARNING,
-                       "dpds chunk size %"PRId64" not divisible by 4\n", size);
-            }
-            dpds_table_size = size / 4;
-            if (dpds_table_size == 0 || dpds_table_size >= INT_MAX / 4) {
-                av_log(s, AV_LOG_ERROR,
-                       "dpds chunk size %"PRId64" invalid\n", size);
-                return -1;
-            }
-
-            /* Allocate some temporary storage to keep the dpds data around.
-             * for processing later on.
-             */
-            dpds_table = av_malloc(dpds_table_size * sizeof(uint32_t));
-            if (!dpds_table) {
-                return AVERROR(ENOMEM);
-            }
-
-            for (i = 0; i < dpds_table_size; ++i) {
-                dpds_table[i] = avio_rl32(pb);
-                size -= 4;
-            }
-        }
-        avio_skip(pb, size);
-    }
-
-    /* Determine overall data length */
-    if (size < 0)
-        return -1;
-    if (!size) {
-        xwma->data_end = INT64_MAX;
-    } else
-        xwma->data_end = avio_tell(pb) + size;
-
-
-    if (dpds_table && dpds_table_size) {
-        int64_t cur_pos;
-        const uint32_t bytes_per_sample
-                = (st->codec->channels * st->codec->bits_per_coded_sample) >> 3;
-
-        /* Estimate the duration from the total number of output bytes. */
-        const uint64_t total_decoded_bytes = dpds_table[dpds_table_size - 1];
-
-        if(!bytes_per_sample) {
-            av_log(s, AV_LOG_ERROR, "bytes_per_sample is 0\n");
-            return AVERROR_INVALIDDATA;
-        }
-
-        st->duration = total_decoded_bytes / bytes_per_sample;
-
-        /* Use the dpds data to build a seek table.  We can only do this after
-         * we know the offset to the data chunk, as we need that to determine
-         * the actual offset to each input block.
-         * Note: If we allowed ourselves to assume that the data chunk always
-         * follows immediately after the dpds block, we could of course guess
-         * the data block's start offset already while reading the dpds chunk.
-         * I decided against that, just in case other chunks ever are
-         * discovered.
-         */
-        cur_pos = avio_tell(pb);
-        for (i = 0; i < dpds_table_size; ++i) {
-            /* From the number of output bytes that would accumulate in the
-             * output buffer after decoding the first (i+1) packets, we compute
-             * an offset / timestamp pair.
-             */
-            av_add_index_entry(st,
-                               cur_pos + (i+1) * st->codec->block_align, /* pos */
-                               dpds_table[i] / bytes_per_sample,         /* timestamp */
-                               st->codec->block_align,                   /* size */
-                               0,                                        /* duration */
-                               AVINDEX_KEYFRAME);
-        }
-    } else if (st->codec->bit_rate) {
-        /* No dpds chunk was present (or only an empty one), so estimate
-         * the total duration using the average bits per sample and the
-         * total data length.
-         */
-        st->duration = (size<<3) * st->codec->sample_rate / st->codec->bit_rate;
-    }
-
-    av_free(dpds_table);
-
-    return 0;
-}
-
-static int xwma_read_packet(AVFormatContext *s, AVPacket *pkt)
-{
-    int ret, size;
-    int64_t left;
-    AVStream *st;
-    XWMAContext *xwma = s->priv_data;
-
-    st = s->streams[0];
-
-    left = xwma->data_end - avio_tell(s->pb);
-    if (left <= 0) {
-        return AVERROR_EOF;
-    }
-
-    /* read a single block; the default block size is 2230. */
-    size = (st->codec->block_align > 1) ? st->codec->block_align : 2230;
-    size = FFMIN(size, left);
-
-    ret  = av_get_packet(s->pb, pkt, size);
-    if (ret < 0)
-        return ret;
-
-    pkt->stream_index = 0;
-    return ret;
-}
-
-AVInputFormat ff_xwma_demuxer = {
-    .name           = "xwma",
-    .long_name      = NULL_IF_CONFIG_SMALL("Microsoft xWMA"),
-    .priv_data_size = sizeof(XWMAContext),
-    .read_probe     = xwma_probe,
-    .read_header    = xwma_read_header,
-    .read_packet    = xwma_read_packet,
-};