early-access version 1432

2021-02-09 04:25:58 +01:00
parent de64eab4b4
commit 3d5a9d908a
7336 changed files with 1773492 additions and 111 deletions
--- a/externals/ffmpeg/libavformat/voc_packet.c
+++ b/externals/ffmpeg/libavformat/voc_packet.c
@@ -0,0 +1,146 @@
+/*
+ * Copyright (c) 2006  Aurelien Jacobs <aurel@gnuage.org>
+ *
+ * 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/intreadwrite.h"
+#include "avformat.h"
+#include "internal.h"
+#include "voc.h"
+
+int
+ff_voc_get_packet(AVFormatContext *s, AVPacket *pkt, AVStream *st, int max_size)
+{
+    VocDecContext *voc = s->priv_data;
+    AVCodecParameters *par = st->codecpar;
+    AVIOContext *pb = s->pb;
+    VocType type;
+    int size, tmp_codec=-1;
+    int sample_rate = 0;
+    int channels = 1;
+    int64_t duration;
+    int ret;
+
+    av_add_index_entry(st,
+                       avio_tell(pb),
+                       voc->pts,
+                       voc->remaining_size,
+                       0,
+                       AVINDEX_KEYFRAME);
+
+    while (!voc->remaining_size) {
+        type = avio_r8(pb);
+        if (type == VOC_TYPE_EOF)
+            return AVERROR_EOF;
+        voc->remaining_size = avio_rl24(pb);
+        if (!voc->remaining_size) {
+            if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL))
+                return AVERROR(EIO);
+            voc->remaining_size = avio_size(pb) - avio_tell(pb);
+        }
+        max_size -= 4;
+
+        switch (type) {
+        case VOC_TYPE_VOICE_DATA:
+            if (!par->sample_rate) {
+                par->sample_rate = 1000000 / (256 - avio_r8(pb));
+                if (sample_rate)
+                    par->sample_rate = sample_rate;
+                avpriv_set_pts_info(st, 64, 1, par->sample_rate);
+                par->channels = channels;
+                par->bits_per_coded_sample = av_get_bits_per_sample(par->codec_id);
+            } else
+                avio_skip(pb, 1);
+            tmp_codec = avio_r8(pb);
+            voc->remaining_size -= 2;
+            max_size -= 2;
+            channels = 1;
+            break;
+
+        case VOC_TYPE_VOICE_DATA_CONT:
+            break;
+
+        case VOC_TYPE_EXTENDED:
+            sample_rate = avio_rl16(pb);
+            avio_r8(pb);
+            channels = avio_r8(pb) + 1;
+            sample_rate = 256000000 / (channels * (65536 - sample_rate));
+            voc->remaining_size = 0;
+            max_size -= 4;
+            break;
+
+        case VOC_TYPE_NEW_VOICE_DATA:
+            if (!par->sample_rate) {
+                par->sample_rate = avio_rl32(pb);
+                avpriv_set_pts_info(st, 64, 1, par->sample_rate);
+                par->bits_per_coded_sample = avio_r8(pb);
+                par->channels = avio_r8(pb);
+            } else
+                avio_skip(pb, 6);
+            tmp_codec = avio_rl16(pb);
+            avio_skip(pb, 4);
+            voc->remaining_size -= 12;
+            max_size -= 12;
+            break;
+
+        default:
+            avio_skip(pb, voc->remaining_size);
+            max_size -= voc->remaining_size;
+            voc->remaining_size = 0;
+            break;
+        }
+    }
+
+    if (par->sample_rate <= 0) {
+        av_log(s, AV_LOG_ERROR, "Invalid sample rate %d\n", par->sample_rate);
+        return AVERROR_INVALIDDATA;
+    }
+
+    if (tmp_codec >= 0) {
+        tmp_codec = ff_codec_get_id(ff_voc_codec_tags, tmp_codec);
+        if (par->codec_id == AV_CODEC_ID_NONE)
+            par->codec_id = tmp_codec;
+        else if (par->codec_id != tmp_codec)
+            av_log(s, AV_LOG_WARNING, "Ignoring mid-stream change in audio codec\n");
+        if (par->codec_id == AV_CODEC_ID_NONE) {
+            if (s->audio_codec_id == AV_CODEC_ID_NONE) {
+                av_log(s, AV_LOG_ERROR, "unknown codec tag\n");
+                return AVERROR(EINVAL);
+            }
+            av_log(s, AV_LOG_WARNING, "unknown codec tag\n");
+        }
+    }
+
+    par->bit_rate = (int64_t)par->sample_rate * par->channels * par->bits_per_coded_sample;
+
+    if (max_size <= 0)
+        max_size = 2048;
+    size = FFMIN(voc->remaining_size, max_size);
+    voc->remaining_size -= size;
+
+    ret = av_get_packet(pb, pkt, size);
+    pkt->dts = pkt->pts = voc->pts;
+
+    duration = av_get_audio_frame_duration2(st->codecpar, size);
+    if (duration > 0 && voc->pts != AV_NOPTS_VALUE)
+        voc->pts += duration;
+    else
+        voc->pts = AV_NOPTS_VALUE;
+
+    return ret;
+}