avcodec: remove fourcc values from AVCodecIDs

Based on a patch by wm4.
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Reviewed-by: Hendrik Leppkes <h.leppkes@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

libavcodec/avcodec.h

@@ -93,8 +93,7 @@
  *
  * If you add a codec ID to this list, add it so that
  * 1. no value of a existing codec ID changes (that would break ABI),
- * 2. Give it a value which when taken as ASCII is recognized uniquely by a human as this specific codec.
- *    This ensures that 2 forks can independently add AVCodecIDs without producing conflicts.
+ * 2. it is as close as possible to similar codecs
  *
  * After adding new codec IDs, do not forget to add an entry to the codec
  * descriptor list and bump libavcodec minor version.
@@ -298,22 +297,21 @@ enum AVCodecID {
     AV_CODEC_ID_DDS,
     AV_CODEC_ID_DXV,
 
-    AV_CODEC_ID_Y41P       = MKBETAG('Y','4','1','P'),
-    AV_CODEC_ID_AVRP       = MKBETAG('A','V','R','P'),
-
-    AV_CODEC_ID_012V       = MKBETAG('0','1','2','V'),
-    AV_CODEC_ID_AVUI       = MKBETAG('A','V','U','I'),
-    AV_CODEC_ID_AYUV       = MKBETAG('A','Y','U','V'),
-    AV_CODEC_ID_TARGA_Y216 = MKBETAG('T','2','1','6'),
-    AV_CODEC_ID_V308       = MKBETAG('V','3','0','8'),
-    AV_CODEC_ID_V408       = MKBETAG('V','4','0','8'),
-    AV_CODEC_ID_YUV4       = MKBETAG('Y','U','V','4'),
-    AV_CODEC_ID_AVRN       = MKBETAG('A','V','R','n'),
-    AV_CODEC_ID_CPIA       = MKBETAG('C','P','I','A'),
-    AV_CODEC_ID_XFACE      = MKBETAG('X','F','A','C'),
-    AV_CODEC_ID_SNOW       = MKBETAG('S','N','O','W'),
-    AV_CODEC_ID_SMVJPEG    = MKBETAG('S','M','V','J'),
-    AV_CODEC_ID_APNG       = MKBETAG('A','P','N','G'),
+    AV_CODEC_ID_Y41P = 0x8000,
+    AV_CODEC_ID_AVRP,
+    AV_CODEC_ID_012V,
+    AV_CODEC_ID_AVUI,
+    AV_CODEC_ID_AYUV,
+    AV_CODEC_ID_TARGA_Y216,
+    AV_CODEC_ID_V308,
+    AV_CODEC_ID_V408,
+    AV_CODEC_ID_YUV4,
+    AV_CODEC_ID_AVRN,
+    AV_CODEC_ID_CPIA,
+    AV_CODEC_ID_XFACE,
+    AV_CODEC_ID_SNOW,
+    AV_CODEC_ID_SMVJPEG,
+    AV_CODEC_ID_APNG,
 
     /* various PCM "codecs" */
     AV_CODEC_ID_FIRST_AUDIO = 0x10000,     ///< A dummy id pointing at the start of audio codecs
@@ -348,6 +346,9 @@ enum AVCodecID {
     AV_CODEC_ID_PCM_S24LE_PLANAR,
     AV_CODEC_ID_PCM_S32LE_PLANAR,
     AV_CODEC_ID_PCM_S16BE_PLANAR,
+    /* new PCM "codecs" should be added right below this line starting with
+     * an explicit value of for example 0x10800
+     */
 
     /* various ADPCM codecs */
     AV_CODEC_ID_ADPCM_IMA_QT = 0x11000,
@@ -384,12 +385,13 @@ enum AVCodecID {
 #if FF_API_VIMA_DECODER
     AV_CODEC_ID_VIMA = AV_CODEC_ID_ADPCM_VIMA,
 #endif
-    AV_CODEC_ID_ADPCM_AFC  = MKBETAG('A','F','C',' '),
-    AV_CODEC_ID_ADPCM_IMA_OKI = MKBETAG('O','K','I',' '),
-    AV_CODEC_ID_ADPCM_DTK  = MKBETAG('D','T','K',' '),
-    AV_CODEC_ID_ADPCM_IMA_RAD = MKBETAG('R','A','D',' '),
-    AV_CODEC_ID_ADPCM_G726LE = MKBETAG('6','2','7','G'),
-    AV_CODEC_ID_ADPCM_THP_LE = MKBETAG('T','H','P','L'),
+
+    AV_CODEC_ID_ADPCM_AFC = 0x11800,
+    AV_CODEC_ID_ADPCM_IMA_OKI,
+    AV_CODEC_ID_ADPCM_DTK,
+    AV_CODEC_ID_ADPCM_IMA_RAD,
+    AV_CODEC_ID_ADPCM_G726LE,
+    AV_CODEC_ID_ADPCM_THP_LE,
 
     /* AMR */
     AV_CODEC_ID_AMR_NB = 0x12000,
@@ -476,16 +478,17 @@ enum AVCodecID {
     AV_CODEC_ID_PAF_AUDIO,
     AV_CODEC_ID_ON2AVC,
     AV_CODEC_ID_DSS_SP,
-    AV_CODEC_ID_FFWAVESYNTH = MKBETAG('F','F','W','S'),
-    AV_CODEC_ID_SONIC       = MKBETAG('S','O','N','C'),
-    AV_CODEC_ID_SONIC_LS    = MKBETAG('S','O','N','L'),
-    AV_CODEC_ID_EVRC        = MKBETAG('s','e','v','c'),
-    AV_CODEC_ID_SMV         = MKBETAG('s','s','m','v'),
-    AV_CODEC_ID_DSD_LSBF    = MKBETAG('D','S','D','L'),
-    AV_CODEC_ID_DSD_MSBF    = MKBETAG('D','S','D','M'),
-    AV_CODEC_ID_DSD_LSBF_PLANAR = MKBETAG('D','S','D','1'),
-    AV_CODEC_ID_DSD_MSBF_PLANAR = MKBETAG('D','S','D','8'),
-    AV_CODEC_ID_4GV         = MKBETAG('s','4','g','v'),
+
+    AV_CODEC_ID_FFWAVESYNTH = 0x15800,
+    AV_CODEC_ID_SONIC,
+    AV_CODEC_ID_SONIC_LS,
+    AV_CODEC_ID_EVRC,
+    AV_CODEC_ID_SMV,
+    AV_CODEC_ID_DSD_LSBF,
+    AV_CODEC_ID_DSD_MSBF,
+    AV_CODEC_ID_DSD_LSBF_PLANAR,
+    AV_CODEC_ID_DSD_MSBF_PLANAR,
+    AV_CODEC_ID_4GV,
 
     /* subtitle codecs */
     AV_CODEC_ID_FIRST_SUBTITLE = 0x17000,          ///< A dummy ID pointing at the start of subtitle codecs.
@@ -498,33 +501,35 @@ enum AVCodecID {
     AV_CODEC_ID_HDMV_PGS_SUBTITLE,
     AV_CODEC_ID_DVB_TELETEXT,
     AV_CODEC_ID_SRT,
-    AV_CODEC_ID_MICRODVD   = MKBETAG('m','D','V','D'),
-    AV_CODEC_ID_EIA_608    = MKBETAG('c','6','0','8'),
-    AV_CODEC_ID_JACOSUB    = MKBETAG('J','S','U','B'),
-    AV_CODEC_ID_SAMI       = MKBETAG('S','A','M','I'),
-    AV_CODEC_ID_REALTEXT   = MKBETAG('R','T','X','T'),
-    AV_CODEC_ID_STL        = MKBETAG('S','p','T','L'),
-    AV_CODEC_ID_SUBVIEWER1 = MKBETAG('S','b','V','1'),
-    AV_CODEC_ID_SUBVIEWER  = MKBETAG('S','u','b','V'),
-    AV_CODEC_ID_SUBRIP     = MKBETAG('S','R','i','p'),
-    AV_CODEC_ID_WEBVTT     = MKBETAG('W','V','T','T'),
-    AV_CODEC_ID_MPL2       = MKBETAG('M','P','L','2'),
-    AV_CODEC_ID_VPLAYER    = MKBETAG('V','P','l','r'),
-    AV_CODEC_ID_PJS        = MKBETAG('P','h','J','S'),
-    AV_CODEC_ID_ASS        = MKBETAG('A','S','S',' '),  ///< ASS as defined in Matroska
-    AV_CODEC_ID_HDMV_TEXT_SUBTITLE = MKBETAG('B','D','T','X'),
+
+    AV_CODEC_ID_MICRODVD   = 0x17800,
+    AV_CODEC_ID_EIA_608,
+    AV_CODEC_ID_JACOSUB,
+    AV_CODEC_ID_SAMI,
+    AV_CODEC_ID_REALTEXT,
+    AV_CODEC_ID_STL,
+    AV_CODEC_ID_SUBVIEWER1,
+    AV_CODEC_ID_SUBVIEWER,
+    AV_CODEC_ID_SUBRIP,
+    AV_CODEC_ID_WEBVTT,
+    AV_CODEC_ID_MPL2,
+    AV_CODEC_ID_VPLAYER,
+    AV_CODEC_ID_PJS,
+    AV_CODEC_ID_ASS,
+    AV_CODEC_ID_HDMV_TEXT_SUBTITLE,
 
     /* other specific kind of codecs (generally used for attachments) */
     AV_CODEC_ID_FIRST_UNKNOWN = 0x18000,           ///< A dummy ID pointing at the start of various fake codecs.
     AV_CODEC_ID_TTF = 0x18000,
-    AV_CODEC_ID_BINTEXT    = MKBETAG('B','T','X','T'),
-    AV_CODEC_ID_XBIN       = MKBETAG('X','B','I','N'),
-    AV_CODEC_ID_IDF        = MKBETAG( 0 ,'I','D','F'),
-    AV_CODEC_ID_OTF        = MKBETAG( 0 ,'O','T','F'),
-    AV_CODEC_ID_SMPTE_KLV  = MKBETAG('K','L','V','A'),
-    AV_CODEC_ID_DVD_NAV    = MKBETAG('D','N','A','V'),
-    AV_CODEC_ID_TIMED_ID3  = MKBETAG('T','I','D','3'),
-    AV_CODEC_ID_BIN_DATA   = MKBETAG('D','A','T','A'),
+
+    AV_CODEC_ID_BINTEXT    = 0x18800,
+    AV_CODEC_ID_XBIN,
+    AV_CODEC_ID_IDF,
+    AV_CODEC_ID_OTF,
+    AV_CODEC_ID_SMPTE_KLV,
+    AV_CODEC_ID_DVD_NAV,
+    AV_CODEC_ID_TIMED_ID3,
+    AV_CODEC_ID_BIN_DATA,
 
 
     AV_CODEC_ID_PROBE = 0x19000, ///< codec_id is not known (like AV_CODEC_ID_NONE) but lavf should attempt to identify it