Cleanup of raw audio support - cf #2470

- added big-endian formats for s24, s32, flt and dbl
- completed endianness support in mixer
- added qt v7 lpcm support
- added big-endian support for ipcm and fpcm (mp4 raw pcm)
- added missing wave and enda boxes for qtv1 pcm
- MP4Box -info now shows correct info for all pcm muxing types

applications/mp4box/filedump.c

@@ -3501,14 +3501,28 @@ static void DumpStsdInfo(GF_ISOFile *file, u32 trackNum, Bool full_dump, Bool du
 			fprintf(stderr, "\tInvalid TrueHD audio config\n");
 		}
 		fprintf(stderr, "\tTrueHD Audio stream - Sample Rate %u - channels %u - format %u peak rate %u\n", sr, nb_ch, fmt, prate);
+	} else if (msub_type==GF_QT_SUBTYPE_LPCM) {
+		Double pcm_sr;
+		u32 pcm_flags, pcm_size;
+		if (gf_isom_get_lpcm_config(file, trackNum, stsd_idx, &pcm_sr, &nb_ch, &pcm_flags, &pcm_size) == GF_OK) {
+			fprintf(stderr, "\tPCM Audio - Sample Rate %f channels %u %u-bits %s %s-endian\n", pcm_sr, nb_ch, pcm_size, (pcm_flags & 1) ? "float" : "int", (pcm_flags & (1<<1)) ? "big" : "little");
+		} else {
+			fprintf(stderr, "\tInvalid LPCM audio config\n");
+		}
 	} else if (codecid) {
 		if (gf_isom_is_video_handler_type(mtype) ) {
 			u32 w, h;
 			gf_isom_get_visual_info(file, trackNum, stsd_idx, &w, &h);
 			fprintf(stderr, "\t%s - Resolution %d x %d\n", gf_codecid_name(codecid), w, h);
 		} else if (mtype==GF_ISOM_MEDIA_AUDIO) {
+			u32 size, flags;
 			gf_isom_get_audio_info(file, trackNum, stsd_idx, &sr, &nb_ch, NULL);
-			fprintf(stderr, "\t%s - Sample Rate %d - %d channel(s)\n", gf_codecid_name(codecid), sr, nb_ch);
+			if (gf_isom_get_pcm_config(file, trackNum, stsd_idx, &flags, &size)==GF_OK) {
+				fprintf(stderr, "\tPCM Audio Sample Rate %d %d channel(s) %u-bits %s-endian", sr, nb_ch, size, (flags&1) ? "little" : "big");
+			} else {
+				fprintf(stderr, "\t%s - Sample Rate %d - %d channel(s)", gf_codecid_name(codecid), sr, nb_ch);
+			}
+			fprintf(stderr, "\n");
 		} else {
 			fprintf(stderr, "\t%s\n", gf_codecid_name(codecid) );
 		}

include/gpac/constants.h

@@ -837,12 +837,20 @@ typedef enum
 	GF_AUDIO_FMT_S16_BE,
 	/*! sample = signed integer, interleaved channels*/
 	GF_AUDIO_FMT_S32,
+	/*! sample = signed integer big-endian, interleaved channels*/
+	GF_AUDIO_FMT_S32_BE,
 	/*! sample = 1 float, interleaved channels*/
 	GF_AUDIO_FMT_FLT,
+	/*! sample = 1 float bytes in big endian, interleaved channels*/
+	GF_AUDIO_FMT_FLT_BE,
 	/*! sample = 1 double, interleaved channels*/
 	GF_AUDIO_FMT_DBL,
+	/*! sample = 1 double bytes in big-endian order, interleaved channels*/
+	GF_AUDIO_FMT_DBL_BE,
 	/*! sample = signed integer, interleaved channels*/
 	GF_AUDIO_FMT_S24,
+	/*! sample = signed integer gig-endian, interleaved channels*/
+	GF_AUDIO_FMT_S24_BE,
 	/*! not a format, indicates the value of last packed format*/
 	GF_AUDIO_FMT_LAST_PACKED,
 	/*! sample = unsigned byte, planar channels*/

include/gpac/isomedia.h

@@ -362,6 +362,7 @@ enum
 	GF_QT_SUBTYPE_RGBA = GF_4CC('R','G','B','A'),
 	GF_QT_SUBTYPE_ABGR = GF_4CC('A','B','G','R'),
 	GF_QT_SUBTYPE_ALAC =  GF_4CC('a','l','a','c'),
+	GF_QT_SUBTYPE_LPCM =  GF_4CC('l','p','c','m'),
 	GF_ISOM_SUBTYPE_FFV1		= GF_4CC( 'F', 'F', 'V', '1' ),
 
 	GF_ISOM_ITEM_TYPE_AUXI 	= GF_4CC('a', 'u', 'x', 'i'),
@@ -3116,6 +3117,8 @@ typedef struct
 	u16 bits_per_sample;
 	/*! indicates if QTFF signaling should be used, audio codecs only*/
 	Bool is_qtff;
+	/*! for lpcm only, indicates format flags*/
+	u32 lpcm_flags;
 
 	/*optional, sample description specific configuration*/
 	u8 *extension_buf;
@@ -3913,12 +3916,23 @@ GF_Err gf_isom_get_tmcd_config(GF_ISOFile *isom_file, u32 trackNumber, u32 sampl
 \param isom_file the target ISO file
 \param trackNumber the target track
 \param sampleDescriptionIndex the target sample description index
-\param flags set to the pcm config flags (0: big endian, 1: little endian)
-\param pcm_size  set to PCM sample size (per channel, 16, 24, 32, 64
+\param flags set to the pcm config flags (0: big endian, 1: little endian), may be NULL
+\param pcm_size  set to PCM sample size (per channel, 16, 24, 32, 64, may be NULL
 \return error if any
 */
 GF_Err gf_isom_get_pcm_config(GF_ISOFile *isom_file, u32 trackNumber, u32 sampleDescriptionIndex, u32 *flags, u32 *pcm_size);
 
+/*! gets information of a raw PCM  sample description, QT style (lpcm codecid)
+\param isom_file the target ISO file
+\param trackNumber the target track
+\param sampleDescriptionIndex the target sample description index
+\param sample_rate set to the pcm sample rate, may be NULL
+\param nb_channels set to the pcm channel count, may be NULL
+\param flags set to the pcm config flags (1: float, 2: big endian, 4: signed, other flags cf QTFF), may be NULL
+\param pcm_size  set to PCM sample size (per channel, 16, 24, 32, 64, may be NULL
+\return error if any
+*/
+GF_Err gf_isom_get_lpcm_config(GF_ISOFile *movie, u32 trackNumber, u32 descriptionIndex, Double *sample_rate, u32 *nb_channels, u32 *flags, u32 *pcm_size);
 
 
 #ifndef GPAC_DISABLE_ISOM_WRITE