added pcm formats

Originally committed as revision 142 to svn://svn.ffmpeg.org/ffmpeg/trunk

libav/avformat.h

@@ -140,7 +140,14 @@ extern AVFormat ac3_format;
 extern AVFormat h263_format;
 extern AVFormat mpeg1video_format;
 extern AVFormat mjpeg_format;
-extern AVFormat pcm_format;
+extern AVFormat pcm_s16le_format;
+extern AVFormat pcm_s16be_format;
+extern AVFormat pcm_u16le_format;
+extern AVFormat pcm_u16be_format;
+extern AVFormat pcm_s8_format;
+extern AVFormat pcm_u8_format;
+extern AVFormat pcm_mulaw_format;
+extern AVFormat pcm_alaw_format;
 extern AVFormat rawvideo_format;
 
 /* ffm.c */

libav/avienc.c

@@ -71,7 +71,9 @@ CodecTag codec_wav_tags[] = {
     { CODEC_ID_MP2, 0x55 },
     { CODEC_ID_MP2, 0x50 },
     { CODEC_ID_AC3, 0x2000 },
-    { CODEC_ID_PCM, 0x01 },
+    { CODEC_ID_PCM_S16LE, 0x01 },
+    { CODEC_ID_PCM_ALAW, 0x06 },
+    { CODEC_ID_PCM_MULAW, 0x07 },
     { 0, 0 },
 };
 

libav/raw.c

@@ -68,7 +68,6 @@ static int raw_read_header(AVFormatContext *s,
         case CODEC_TYPE_AUDIO:
             st->codec.sample_rate = ap->sample_rate;
             st->codec.channels = ap->channels;
-            /* XXX: endianness */
             break;
         case CODEC_TYPE_VIDEO:
             st->codec.frame_rate = ap->frame_rate;
@@ -84,6 +83,26 @@ static int raw_read_header(AVFormatContext *s,
     return 0;
 }
 
+/* raw input */
+static int pcm_read_header(AVFormatContext *s,
+                           AVFormatParameters *ap)
+{
+    AVStream *st;
+
+    st = malloc(sizeof(AVStream));
+    if (!st)
+        return -1;
+    s->nb_streams = 1;
+    s->streams[0] = st;
+
+    st->id = 0;
+
+    st->codec.codec_type = CODEC_TYPE_AUDIO;
+    st->codec.codec_id = s->format->audio_codec;
+
+    return 0;
+}
+
 #define RAW_PACKET_SIZE 1024
 
 int raw_read_packet(AVFormatContext *s,
@@ -229,18 +248,148 @@ AVFormat mjpeg_format = {
     raw_read_close,
 };
 
-AVFormat pcm_format = {
-    "pcm",
-    "pcm raw format",
+/* pcm formats */
+
+AVFormat pcm_s16le_format = {
+    "s16le",
+    "pcm signed 16 bit little endian format",
     NULL,
+#ifdef WORDS_BIGENDIAN
+    "",
+#else
     "sw",
-    CODEC_ID_PCM,
+#endif
+    CODEC_ID_PCM_S16LE,
     0,
     raw_write_header,
     raw_write_packet,
     raw_write_trailer,
 
-    raw_read_header,
+    pcm_read_header,
+    raw_read_packet,
+    raw_read_close,
+};
+
+AVFormat pcm_s16be_format = {
+    "s16be",
+    "pcm signed 16 bit big endian format",
+    NULL,
+#ifdef WORDS_BIGENDIAN
+    "sw",
+#else
+    "",
+#endif
+    CODEC_ID_PCM_S16BE,
+    0,
+    raw_write_header,
+    raw_write_packet,
+    raw_write_trailer,
+
+    pcm_read_header,
+    raw_read_packet,
+    raw_read_close,
+};
+
+AVFormat pcm_u16le_format = {
+    "u16le",
+    "pcm unsigned 16 bit little endian format",
+    NULL,
+#ifdef WORDS_BIGENDIAN
+    "",
+#else
+    "uw",
+#endif
+    CODEC_ID_PCM_U16LE,
+    0,
+    raw_write_header,
+    raw_write_packet,
+    raw_write_trailer,
+
+    pcm_read_header,
+    raw_read_packet,
+    raw_read_close,
+};
+
+AVFormat pcm_u16be_format = {
+    "u16be",
+    "pcm unsigned 16 bit big endian format",
+    NULL,
+#ifdef WORDS_BIGENDIAN
+    "uw",
+#else
+    "",
+#endif
+    CODEC_ID_PCM_U16BE,
+    0,
+    raw_write_header,
+    raw_write_packet,
+    raw_write_trailer,
+
+    pcm_read_header,
+    raw_read_packet,
+    raw_read_close,
+};
+
+AVFormat pcm_s8_format = {
+    "s8",
+    "pcm signed 8 bit format",
+    NULL,
+    "sb",
+    CODEC_ID_PCM_S8,
+    0,
+    raw_write_header,
+    raw_write_packet,
+    raw_write_trailer,
+
+    pcm_read_header,
+    raw_read_packet,
+    raw_read_close,
+};
+
+AVFormat pcm_u8_format = {
+    "u8",
+    "pcm unsigned 8 bit format",
+    NULL,
+    "ub",
+    CODEC_ID_PCM_U8,
+    0,
+    raw_write_header,
+    raw_write_packet,
+    raw_write_trailer,
+
+    pcm_read_header,
+    raw_read_packet,
+    raw_read_close,
+};
+
+AVFormat pcm_mulaw_format = {
+    "mulaw",
+    "pcm mu law format",
+    NULL,
+    "ul",
+    CODEC_ID_PCM_MULAW,
+    0,
+    raw_write_header,
+    raw_write_packet,
+    raw_write_trailer,
+
+    pcm_read_header,
+    raw_read_packet,
+    raw_read_close,
+};
+
+AVFormat pcm_alaw_format = {
+    "alaw",
+    "pcm A law format",
+    NULL,
+    "al",
+    CODEC_ID_PCM_ALAW,
+    0,
+    raw_write_header,
+    raw_write_packet,
+    raw_write_trailer,
+
+    pcm_read_header,
     raw_read_packet,
     raw_read_close,
 };

libav/utils.c

@@ -142,7 +142,14 @@ void register_all(void)
     register_avformat(&single_jpeg_format);
     register_avformat(&swf_format);
     register_avformat(&wav_format);
-    register_avformat(&pcm_format);
+    register_avformat(&pcm_s16le_format);
+    register_avformat(&pcm_s16be_format);
+    register_avformat(&pcm_u16le_format);
+    register_avformat(&pcm_u16be_format);
+    register_avformat(&pcm_s8_format);
+    register_avformat(&pcm_u8_format);
+    register_avformat(&pcm_mulaw_format);
+    register_avformat(&pcm_alaw_format);
     register_avformat(&rawvideo_format);
 #ifndef CONFIG_WIN32
     register_avformat(&ffm_format);

libav/wav.c

@@ -110,7 +110,7 @@ static int wav_read_header(AVFormatContext *s,
     int size;
     unsigned int tag;
     ByteIOContext *pb = &s->pb;
-    unsigned int id, channels, rate, bit_rate, extra_size;
+    unsigned int id, channels, rate, bit_rate, extra_size, bps;
     AVStream *st;
 
     /* check RIFF header */
@@ -132,7 +132,7 @@ static int wav_read_header(AVFormatContext *s,
     rate = get_le32(pb);
     bit_rate = get_le32(pb) * 8;
     get_le16(pb); /* block align */
-    get_le16(pb); /* bits per sample */
+    bps = get_le16(pb); /* bits per sample */
     if (size >= 18) {
         /* wav_extra_size */
         extra_size = get_le16(pb); 
@@ -158,6 +158,9 @@ static int wav_read_header(AVFormatContext *s,
     st->codec.codec_id = codec_get_id(codec_wav_tags, id);
     st->codec.channels = channels;
     st->codec.sample_rate = rate;
+    if (st->codec.codec_id == CODEC_ID_PCM_S16LE && bps == 8) {
+        st->codec.codec_id = CODEC_ID_PCM_U8;
+    }
     return 0;
 }
 
@@ -181,6 +184,9 @@ static int wav_read_packet(AVFormatContext *s,
     ret = get_buffer(&s->pb, pkt->data, pkt->size);
     if (ret < 0)
         av_free_packet(pkt);
+    /* note: we need to modify the packet size here to handle the last
+       packet */
+    pkt->size = ret;
     return ret;
 }
 
@@ -194,7 +200,7 @@ AVFormat wav_format = {
     "wav format",
     "audio/x-wav",
     "wav",
-    CODEC_ID_PCM,
+    CODEC_ID_PCM_S16LE,
     CODEC_ID_NONE,
     wav_write_header,
     wav_write_packet,