move common stuff from avienc.c and wav.c to new file riff.c

Originally committed as revision 5720 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 1 insertions, 182 deletions

diff --git a/libavformat/wav.c b/libavformat/wav.c
index 4d926a41d2..cc28ec5e31 100644
--- a/libavformat/wav.c
+++ b/libavformat/wav.c
@@ -18,188 +18,7 @@
  */
 #include "avformat.h"
 #include "allformats.h"
-#include "avi.h"
-
-const CodecTag codec_wav_tags[] = {
-    { CODEC_ID_MP2, 0x50 },
-    { CODEC_ID_MP3, 0x55 },
-    { CODEC_ID_AC3, 0x2000 },
-    { CODEC_ID_DTS, 0x2001 },
-    { CODEC_ID_PCM_S16LE, 0x01 },
-    { CODEC_ID_PCM_U8, 0x01 }, /* must come after s16le in this list */
-    { CODEC_ID_PCM_S24LE, 0x01 },
-    { CODEC_ID_PCM_S32LE, 0x01 },
-    { CODEC_ID_PCM_ALAW, 0x06 },
-    { CODEC_ID_PCM_MULAW, 0x07 },
-    { CODEC_ID_ADPCM_MS, 0x02 },
-    { CODEC_ID_ADPCM_IMA_WAV, 0x11 },
-    { CODEC_ID_ADPCM_YAMAHA, 0x20 },
-    { CODEC_ID_ADPCM_G726, 0x45 },
-    { CODEC_ID_ADPCM_IMA_DK4, 0x61 },  /* rogue format number */
-    { CODEC_ID_ADPCM_IMA_DK3, 0x62 },  /* rogue format number */
-    { CODEC_ID_WMAV1, 0x160 },
-    { CODEC_ID_WMAV2, 0x161 },
-    { CODEC_ID_AAC, 0x706d },
-    { CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
-    { CODEC_ID_SONIC, 0x2048 },
-    { CODEC_ID_SONIC_LS, 0x2048 },
-    { CODEC_ID_ADPCM_CT, 0x200 },
-    { CODEC_ID_ADPCM_SWF, ('S'<<8)+'F' },
-    { CODEC_ID_TRUESPEECH, 0x22 },
-
-    // for NuppelVideo (nuv.c)
-    { CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
-    { CODEC_ID_MP3, MKTAG('L', 'A', 'M', 'E') },
-    { 0, 0 },
-};
-
-#ifdef CONFIG_MUXERS
-/* WAVEFORMATEX header */
-/* returns the size or -1 on error */
-int put_wav_header(ByteIOContext *pb, AVCodecContext *enc)
-{
-    int bps, blkalign, bytespersec;
-    int hdrsize = 18;
-
-    if(!enc->codec_tag || enc->codec_tag > 0xffff)
-       enc->codec_tag = codec_get_tag(codec_wav_tags, enc->codec_id);
-    if(!enc->codec_tag)
-        return -1;
-
-    put_le16(pb, enc->codec_tag);
-    put_le16(pb, enc->channels);
-    put_le32(pb, enc->sample_rate);
-    if (enc->codec_id == CODEC_ID_PCM_U8 ||
-        enc->codec_id == CODEC_ID_PCM_ALAW ||
-        enc->codec_id == CODEC_ID_PCM_MULAW) {
-        bps = 8;
-    } else if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) {
-        bps = 0;
-    } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV || enc->codec_id == CODEC_ID_ADPCM_MS || enc->codec_id == CODEC_ID_ADPCM_G726 || enc->codec_id == CODEC_ID_ADPCM_YAMAHA) { //
-        bps = 4;
-    } else if (enc->codec_id == CODEC_ID_PCM_S24LE) {
-        bps = 24;
-    } else if (enc->codec_id == CODEC_ID_PCM_S32LE) {
-        bps = 32;
-    } else {
-        bps = 16;
-    }
-
-    if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) {
-        blkalign = enc->frame_size; //this is wrong, but seems many demuxers dont work if this is set correctly
-        //blkalign = 144 * enc->bit_rate/enc->sample_rate;
-    } else if (enc->codec_id == CODEC_ID_ADPCM_G726) { //
-        blkalign = 1;
-    } else if (enc->block_align != 0) { /* specified by the codec */
-        blkalign = enc->block_align;
-    } else
-        blkalign = enc->channels*bps >> 3;
-    if (enc->codec_id == CODEC_ID_PCM_U8 ||
-        enc->codec_id == CODEC_ID_PCM_S24LE ||
-        enc->codec_id == CODEC_ID_PCM_S32LE ||
-        enc->codec_id == CODEC_ID_PCM_S16LE) {
-        bytespersec = enc->sample_rate * blkalign;
-    } else {
-        bytespersec = enc->bit_rate / 8;
-    }
-    put_le32(pb, bytespersec); /* bytes per second */
-    put_le16(pb, blkalign); /* block align */
-    put_le16(pb, bps); /* bits per sample */
-    if (enc->codec_id == CODEC_ID_MP3) {
-        put_le16(pb, 12); /* wav_extra_size */
-        hdrsize += 12;
-        put_le16(pb, 1); /* wID */
-        put_le32(pb, 2); /* fdwFlags */
-        put_le16(pb, 1152); /* nBlockSize */
-        put_le16(pb, 1); /* nFramesPerBlock */
-        put_le16(pb, 1393); /* nCodecDelay */
-    } else if (enc->codec_id == CODEC_ID_MP2) {
-        put_le16(pb, 22); /* wav_extra_size */
-        hdrsize += 22;
-        put_le16(pb, 2);  /* fwHeadLayer */
-        put_le32(pb, enc->bit_rate); /* dwHeadBitrate */
-        put_le16(pb, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
-        put_le16(pb, 0);  /* fwHeadModeExt */
-        put_le16(pb, 1);  /* wHeadEmphasis */
-        put_le16(pb, 16); /* fwHeadFlags */
-        put_le32(pb, 0);  /* dwPTSLow */
-        put_le32(pb, 0);  /* dwPTSHigh */
-    } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
-        put_le16(pb, 2); /* wav_extra_size */
-        hdrsize += 2;
-        put_le16(pb, ((enc->block_align - 4 * enc->channels) / (4 * enc->channels)) * 8 + 1); /* wSamplesPerBlock */
-    } else if(enc->extradata_size){
-        put_le16(pb, enc->extradata_size);
-        put_buffer(pb, enc->extradata, enc->extradata_size);
-        hdrsize += enc->extradata_size;
-        if(hdrsize&1){
-            hdrsize++;
-            put_byte(pb, 0);
-        }
-    } else {
-        hdrsize -= 2;
-    }
-
-    return hdrsize;
-}
-#endif //CONFIG_MUXERS
-
-/* We could be given one of the three possible structures here:
- * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
- * is an expansion of the previous one with the fields added
- * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
- * WAVEFORMATEX adds 'WORD  cbSize' and basically makes itself
- * an openended structure.
- */
-void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size)
-{
-    int id;
-
-    id = get_le16(pb);
-    codec->codec_type = CODEC_TYPE_AUDIO;
-    codec->codec_tag = id;
-    codec->channels = get_le16(pb);
-    codec->sample_rate = get_le32(pb);
-    codec->bit_rate = get_le32(pb) * 8;
-    codec->block_align = get_le16(pb);
-    if (size == 14) {  /* We're dealing with plain vanilla WAVEFORMAT */
-        codec->bits_per_sample = 8;
-    }else
-        codec->bits_per_sample = get_le16(pb);
-    codec->codec_id = wav_codec_get_id(id, codec->bits_per_sample);
-
-    if (size > 16) {  /* We're obviously dealing with WAVEFORMATEX */
-        codec->extradata_size = get_le16(pb);
-        if (codec->extradata_size > 0) {
-            if (codec->extradata_size > size - 18)
-                codec->extradata_size = size - 18;
-            codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
-            get_buffer(pb, codec->extradata, codec->extradata_size);
-        } else
-            codec->extradata_size = 0;
-
-        /* It is possible for the chunk to contain garbage at the end */
-        if (size - codec->extradata_size - 18 > 0)
-            url_fskip(pb, size - codec->extradata_size - 18);
-    }
-}
-
-
-int wav_codec_get_id(unsigned int tag, int bps)
-{
-    int id;
-    id = codec_get_id(codec_wav_tags, tag);
-    if (id <= 0)
-        return id;
-    /* handle specific u8 codec */
-    if (id == CODEC_ID_PCM_S16LE && bps == 8)
-        id = CODEC_ID_PCM_U8;
-    if (id == CODEC_ID_PCM_S16LE && bps == 24)
-        id = CODEC_ID_PCM_S24LE;
-    if (id == CODEC_ID_PCM_S16LE && bps == 32)
-        id = CODEC_ID_PCM_S32LE;
-    return id;
-}
+#include "riff.h"
 
 typedef struct {
     offset_t data;