lavf: split wav muxer and demuxer into separate files.

3 files changed, 230 insertions, 195 deletions

diff --git a/libavformat/Makefile b/libavformat/Makefile
index 26c9803add..2d66a6d0ba 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -321,9 +321,9 @@ OBJS-$(CONFIG_VMD_DEMUXER)               += sierravmd.o
 OBJS-$(CONFIG_VOC_DEMUXER)               += vocdec.o voc.o
 OBJS-$(CONFIG_VOC_MUXER)                 += vocenc.o voc.o
 OBJS-$(CONFIG_VQF_DEMUXER)               += vqf.o
-OBJS-$(CONFIG_W64_DEMUXER)               += wav.o pcm.o
-OBJS-$(CONFIG_WAV_DEMUXER)               += wav.o pcm.o
-OBJS-$(CONFIG_WAV_MUXER)                 += wav.o
+OBJS-$(CONFIG_W64_DEMUXER)               += wavdec.o pcm.o
+OBJS-$(CONFIG_WAV_DEMUXER)               += wavdec.o pcm.o
+OBJS-$(CONFIG_WAV_MUXER)                 += wavenc.o
 OBJS-$(CONFIG_WC3_DEMUXER)               += wc3movie.o
 OBJS-$(CONFIG_WEBM_MUXER)                += matroskaenc.o matroska.o \
                                             isom.o avc.o \
diff --git a/libavformat/wav.c b/libavformat/wavdec.c
index ac78f4bee2..bc5288734e 100644
--- a/libavformat/wav.c
+++ b/libavformat/wavdec.c
@@ -1,5 +1,5 @@
 /*
- * WAV muxer and demuxer
+ * WAV demuxer
  * Copyright (c) 2001, 2002 Fabrice Bellard
  *
  * Sony Wave64 demuxer
@@ -36,194 +36,10 @@
 #include "avio.h"
 #include "metadata.h"
 
-typedef struct {
-    const AVClass *class;
-    int64_t data;
+typedef struct WAVDemuxContext {
     int64_t data_end;
-    int64_t minpts;
-    int64_t maxpts;
-    int last_duration;
     int w64;
-    int write_bext;
-} WAVContext;
-
-#if CONFIG_WAV_MUXER
-static inline void bwf_write_bext_string(AVFormatContext *s, const char *key, int maxlen)
-{
-    AVDictionaryEntry *tag;
-    int len = 0;
-
-    if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
-        len = strlen(tag->value);
-        len = FFMIN(len, maxlen);
-        avio_write(s->pb, tag->value, len);
-    }
-
-    ffio_fill(s->pb, 0, maxlen - len);
-}
-
-static void bwf_write_bext_chunk(AVFormatContext *s)
-{
-    AVDictionaryEntry *tmp_tag;
-    uint64_t time_reference = 0;
-    int64_t bext = ff_start_tag(s->pb, "bext");
-
-    bwf_write_bext_string(s, "description", 256);
-    bwf_write_bext_string(s, "originator", 32);
-    bwf_write_bext_string(s, "originator_reference", 32);
-    bwf_write_bext_string(s, "origination_date", 10);
-    bwf_write_bext_string(s, "origination_time", 8);
-
-    if (tmp_tag = av_dict_get(s->metadata, "time_reference", NULL, 0))
-        time_reference = strtoll(tmp_tag->value, NULL, 10);
-    avio_wl64(s->pb, time_reference);
-    avio_wl16(s->pb, 1);  // set version to 1
-
-    if (tmp_tag = av_dict_get(s->metadata, "umid", NULL, 0)) {
-        unsigned char umidpart_str[17] = {0};
-        int i;
-        uint64_t umidpart;
-        int len = strlen(tmp_tag->value+2);
-
-        for (i = 0; i < len/16; i++) {
-            memcpy(umidpart_str, tmp_tag->value + 2 + (i*16), 16);
-            umidpart = strtoll(umidpart_str, NULL, 16);
-            avio_wb64(s->pb, umidpart);
-        }
-        ffio_fill(s->pb, 0, 64 - i*8);
-    } else
-        ffio_fill(s->pb, 0, 64); // zero UMID
-
-    ffio_fill(s->pb, 0, 190); // Reserved
-
-    if (tmp_tag = av_dict_get(s->metadata, "coding_history", NULL, 0))
-        avio_put_str(s->pb, tmp_tag->value);
-
-    ff_end_tag(s->pb, bext);
-}
-
-static int wav_write_header(AVFormatContext *s)
-{
-    WAVContext *wav = s->priv_data;
-    AVIOContext *pb = s->pb;
-    int64_t fmt, fact;
-
-    ffio_wfourcc(pb, "RIFF");
-    avio_wl32(pb, 0); /* file length */
-    ffio_wfourcc(pb, "WAVE");
-
-    /* format header */
-    fmt = ff_start_tag(pb, "fmt ");
-    if (ff_put_wav_header(pb, s->streams[0]->codec) < 0) {
-        av_log(s, AV_LOG_ERROR, "%s codec not supported in WAVE format\n",
-               s->streams[0]->codec->codec ? s->streams[0]->codec->codec->name : "NONE");
-        return -1;
-    }
-    ff_end_tag(pb, fmt);
-
-    if (s->streams[0]->codec->codec_tag != 0x01 /* hence for all other than PCM */
-        && s->pb->seekable) {
-        fact = ff_start_tag(pb, "fact");
-        avio_wl32(pb, 0);
-        ff_end_tag(pb, fact);
-    }
-
-    if (wav->write_bext)
-        bwf_write_bext_chunk(s);
-
-    avpriv_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate);
-    wav->maxpts = wav->last_duration = 0;
-    wav->minpts = INT64_MAX;
-
-    /* info header */
-    ff_riff_write_info(s);
-
-    /* data header */
-    wav->data = ff_start_tag(pb, "data");
-
-    avio_flush(pb);
-
-    return 0;
-}
-
-static int wav_write_packet(AVFormatContext *s, AVPacket *pkt)
-{
-    AVIOContext *pb  = s->pb;
-    WAVContext    *wav = s->priv_data;
-    avio_write(pb, pkt->data, pkt->size);
-    if(pkt->pts != AV_NOPTS_VALUE) {
-        wav->minpts        = FFMIN(wav->minpts, pkt->pts);
-        wav->maxpts        = FFMAX(wav->maxpts, pkt->pts);
-        wav->last_duration = pkt->duration;
-    } else
-        av_log(s, AV_LOG_ERROR, "wav_write_packet: NOPTS\n");
-    return 0;
-}
-
-static int wav_write_trailer(AVFormatContext *s)
-{
-    AVIOContext *pb  = s->pb;
-    WAVContext    *wav = s->priv_data;
-    int64_t file_size;
-
-    avio_flush(pb);
-
-    if (s->pb->seekable) {
-        ff_end_tag(pb, wav->data);
-
-        /* update file size */
-        file_size = avio_tell(pb);
-        avio_seek(pb, 4, SEEK_SET);
-        avio_wl32(pb, (uint32_t)(file_size - 8));
-        avio_seek(pb, file_size, SEEK_SET);
-
-        avio_flush(pb);
-
-        if(s->streams[0]->codec->codec_tag != 0x01) {
-            /* Update num_samps in fact chunk */
-            int number_of_samples;
-            number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration,
-                                           s->streams[0]->codec->sample_rate * (int64_t)s->streams[0]->time_base.num,
-                                           s->streams[0]->time_base.den);
-            avio_seek(pb, wav->data-12, SEEK_SET);
-            avio_wl32(pb, number_of_samples);
-            avio_seek(pb, file_size, SEEK_SET);
-            avio_flush(pb);
-        }
-    }
-    return 0;
-}
-
-#define OFFSET(x) offsetof(WAVContext, x)
-#define ENC AV_OPT_FLAG_ENCODING_PARAM
-static const AVOption options[] = {
-    { "write_bext", "Write BEXT chunk.", OFFSET(write_bext), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ENC },
-    { NULL },
-};
-
-static const AVClass wav_muxer_class = {
-    .class_name = "WAV muxer",
-    .item_name  = av_default_item_name,
-    .option     = options,
-    .version    = LIBAVUTIL_VERSION_INT,
-};
-
-AVOutputFormat ff_wav_muxer = {
-    .name              = "wav",
-    .long_name         = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"),
-    .mime_type         = "audio/x-wav",
-    .extensions        = "wav",
-    .priv_data_size    = sizeof(WAVContext),
-    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
-    .video_codec       = AV_CODEC_ID_NONE,
-    .write_header      = wav_write_header,
-    .write_packet      = wav_write_packet,
-    .write_trailer     = wav_write_trailer,
-    .flags             = AVFMT_TS_NONSTRICT,
-    .codec_tag         = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 },
-    .priv_class        = &wav_muxer_class,
-};
-#endif /* CONFIG_WAV_MUXER */
+} WAVDemuxContext;
 
 
 #if CONFIG_WAV_DEMUXER
@@ -391,7 +207,7 @@ static int wav_read_header(AVFormatContext *s)
     uint32_t tag, list_type;
     AVIOContext *pb = s->pb;
     AVStream *st = NULL;
-    WAVContext *wav = s->priv_data;
+    WAVDemuxContext *wav = s->priv_data;
     int ret, got_fmt = 0;
     int64_t next_tag_ofs, data_ofs = -1;
 
@@ -540,7 +356,7 @@ static int wav_read_packet(AVFormatContext *s,
     int ret, size;
     int64_t left;
     AVStream *st;
-    WAVContext *wav = s->priv_data;
+    WAVDemuxContext *wav = s->priv_data;
 
     st = s->streams[0];
 
@@ -592,7 +408,7 @@ static int wav_read_seek(AVFormatContext *s,
 AVInputFormat ff_wav_demuxer = {
     .name           = "wav",
     .long_name      = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"),
-    .priv_data_size = sizeof(WAVContext),
+    .priv_data_size = sizeof(WAVDemuxContext),
     .read_probe     = wav_probe,
     .read_header    = wav_read_header,
     .read_packet    = wav_read_packet,
@@ -628,7 +444,7 @@ static int w64_read_header(AVFormatContext *s)
 {
     int64_t size;
     AVIOContext *pb  = s->pb;
-    WAVContext    *wav = s->priv_data;
+    WAVDemuxContext    *wav = s->priv_data;
     AVStream *st;
     uint8_t guid[16];
     int ret;
@@ -680,7 +496,7 @@ static int w64_read_header(AVFormatContext *s)
 AVInputFormat ff_w64_demuxer = {
     .name           = "w64",
     .long_name      = NULL_IF_CONFIG_SMALL("Sony Wave64"),
-    .priv_data_size = sizeof(WAVContext),
+    .priv_data_size = sizeof(WAVDemuxContext),
     .read_probe     = w64_probe,
     .read_header    = w64_read_header,
     .read_packet    = wav_read_packet,
diff --git a/libavformat/wavenc.c b/libavformat/wavenc.c
new file mode 100644
index 0000000000..d5e572fd2f
--- /dev/null
+++ b/libavformat/wavenc.c
@@ -0,0 +1,219 @@
+/*
+ * WAV muxer
+ * Copyright (c) 2001, 2002 Fabrice Bellard
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+#include <string.h>
+
+#include "libavutil/dict.h"
+#include "libavutil/common.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/opt.h"
+
+#include "avformat.h"
+#include "avio.h"
+#include "avio_internal.h"
+#include "internal.h"
+#include "riff.h"
+
+typedef struct WAVMuxContext {
+    const AVClass *class;
+    int64_t data;
+    int64_t minpts;
+    int64_t maxpts;
+    int last_duration;
+    int write_bext;
+} WAVMuxContext;
+
+static inline void bwf_write_bext_string(AVFormatContext *s, const char *key, int maxlen)
+{
+    AVDictionaryEntry *tag;
+    int len = 0;
+
+    if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
+        len = strlen(tag->value);
+        len = FFMIN(len, maxlen);
+        avio_write(s->pb, tag->value, len);
+    }
+
+    ffio_fill(s->pb, 0, maxlen - len);
+}
+
+static void bwf_write_bext_chunk(AVFormatContext *s)
+{
+    AVDictionaryEntry *tmp_tag;
+    uint64_t time_reference = 0;
+    int64_t bext = ff_start_tag(s->pb, "bext");
+
+    bwf_write_bext_string(s, "description", 256);
+    bwf_write_bext_string(s, "originator", 32);
+    bwf_write_bext_string(s, "originator_reference", 32);
+    bwf_write_bext_string(s, "origination_date", 10);
+    bwf_write_bext_string(s, "origination_time", 8);
+
+    if (tmp_tag = av_dict_get(s->metadata, "time_reference", NULL, 0))
+        time_reference = strtoll(tmp_tag->value, NULL, 10);
+    avio_wl64(s->pb, time_reference);
+    avio_wl16(s->pb, 1);  // set version to 1
+
+    if (tmp_tag = av_dict_get(s->metadata, "umid", NULL, 0)) {
+        unsigned char umidpart_str[17] = {0};
+        int i;
+        uint64_t umidpart;
+        int len = strlen(tmp_tag->value+2);
+
+        for (i = 0; i < len/16; i++) {
+            memcpy(umidpart_str, tmp_tag->value + 2 + (i*16), 16);
+            umidpart = strtoll(umidpart_str, NULL, 16);
+            avio_wb64(s->pb, umidpart);
+        }
+        ffio_fill(s->pb, 0, 64 - i*8);
+    } else
+        ffio_fill(s->pb, 0, 64); // zero UMID
+
+    ffio_fill(s->pb, 0, 190); // Reserved
+
+    if (tmp_tag = av_dict_get(s->metadata, "coding_history", NULL, 0))
+        avio_put_str(s->pb, tmp_tag->value);
+
+    ff_end_tag(s->pb, bext);
+}
+
+static int wav_write_header(AVFormatContext *s)
+{
+    WAVMuxContext *wav = s->priv_data;
+    AVIOContext *pb = s->pb;
+    int64_t fmt, fact;
+
+    ffio_wfourcc(pb, "RIFF");
+    avio_wl32(pb, 0); /* file length */
+    ffio_wfourcc(pb, "WAVE");
+
+    /* format header */
+    fmt = ff_start_tag(pb, "fmt ");
+    if (ff_put_wav_header(pb, s->streams[0]->codec) < 0) {
+        av_log(s, AV_LOG_ERROR, "%s codec not supported in WAVE format\n",
+               s->streams[0]->codec->codec ? s->streams[0]->codec->codec->name : "NONE");
+        return -1;
+    }
+    ff_end_tag(pb, fmt);
+
+    if (s->streams[0]->codec->codec_tag != 0x01 /* hence for all other than PCM */
+        && s->pb->seekable) {
+        fact = ff_start_tag(pb, "fact");
+        avio_wl32(pb, 0);
+        ff_end_tag(pb, fact);
+    }
+
+    if (wav->write_bext)
+        bwf_write_bext_chunk(s);
+
+    avpriv_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate);
+    wav->maxpts = wav->last_duration = 0;
+    wav->minpts = INT64_MAX;
+
+    /* info header */
+    ff_riff_write_info(s);
+
+    /* data header */
+    wav->data = ff_start_tag(pb, "data");
+
+    avio_flush(pb);
+
+    return 0;
+}
+
+static int wav_write_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    AVIOContext *pb  = s->pb;
+    WAVMuxContext    *wav = s->priv_data;
+    avio_write(pb, pkt->data, pkt->size);
+    if(pkt->pts != AV_NOPTS_VALUE) {
+        wav->minpts        = FFMIN(wav->minpts, pkt->pts);
+        wav->maxpts        = FFMAX(wav->maxpts, pkt->pts);
+        wav->last_duration = pkt->duration;
+    } else
+        av_log(s, AV_LOG_ERROR, "wav_write_packet: NOPTS\n");
+    return 0;
+}
+
+static int wav_write_trailer(AVFormatContext *s)
+{
+    AVIOContext *pb  = s->pb;
+    WAVMuxContext    *wav = s->priv_data;
+    int64_t file_size;
+
+    avio_flush(pb);
+
+    if (s->pb->seekable) {
+        ff_end_tag(pb, wav->data);
+
+        /* update file size */
+        file_size = avio_tell(pb);
+        avio_seek(pb, 4, SEEK_SET);
+        avio_wl32(pb, (uint32_t)(file_size - 8));
+        avio_seek(pb, file_size, SEEK_SET);
+
+        avio_flush(pb);
+
+        if(s->streams[0]->codec->codec_tag != 0x01) {
+            /* Update num_samps in fact chunk */
+            int number_of_samples;
+            number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration,
+                                           s->streams[0]->codec->sample_rate * (int64_t)s->streams[0]->time_base.num,
+                                           s->streams[0]->time_base.den);
+            avio_seek(pb, wav->data-12, SEEK_SET);
+            avio_wl32(pb, number_of_samples);
+            avio_seek(pb, file_size, SEEK_SET);
+            avio_flush(pb);
+        }
+    }
+    return 0;
+}
+
+#define OFFSET(x) offsetof(WAVMuxContext, x)
+#define ENC AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption options[] = {
+    { "write_bext", "Write BEXT chunk.", OFFSET(write_bext), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ENC },
+    { NULL },
+};
+
+static const AVClass wav_muxer_class = {
+    .class_name = "WAV muxer",
+    .item_name  = av_default_item_name,
+    .option     = options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+AVOutputFormat ff_wav_muxer = {
+    .name              = "wav",
+    .long_name         = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"),
+    .mime_type         = "audio/x-wav",
+    .extensions        = "wav",
+    .priv_data_size    = sizeof(WAVMuxContext),
+    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
+    .video_codec       = AV_CODEC_ID_NONE,
+    .write_header      = wav_write_header,
+    .write_packet      = wav_write_packet,
+    .write_trailer     = wav_write_trailer,
+    .flags             = AVFMT_TS_NONSTRICT,
+    .codec_tag         = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 },
+    .priv_class        = &wav_muxer_class,
+};