From f2d98c50c64ce60e415b8aedc0f0c3d08e3b070d Mon Sep 17 00:00:00 2001
From: bnnm <bananaman255@gmail.com>
Date: Sun, 15 May 2022 12:25:52 +0200
Subject: [PATCH] Add TXTH codec "IMA_HV" [NBA Hangtime (PC)]

---
 doc/TXTH.md     | 2 ++
 src/meta/txth.c | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/doc/TXTH.md b/doc/TXTH.md
index c442e001..01b05325 100644
--- a/doc/TXTH.md
+++ b/doc/TXTH.md
@@ -164,6 +164,8 @@ as explained below, but often will use default values. Accepted codec strings:
 #   * For rare Saturn games [EA SAT videos]
 # - CP_YM          Capcom's Yamaha ADPCM
 #   * For rare Saturn games [Marvel Super Heroes vs Street Fighter (SAT)]
+# - IMA_HV         High Voltage's IMA ADPCM
+#   * For some High Voltage Software PC games [NBA Hangtime (PC), NHL Open Ice (PC)]
 codec = (codec string)
 ```
 
diff --git a/src/meta/txth.c b/src/meta/txth.c
index da3efc69..2a52ad84 100644
--- a/src/meta/txth.c
+++ b/src/meta/txth.c
@@ -47,6 +47,7 @@ typedef enum {
     XA_EA,
     CP_YM,
     PCM_FLOAT_LE,
+    IMA_HV,
 
     UNKNOWN = 99,
 } txth_codec_t;
@@ -240,6 +241,7 @@ VGMSTREAM* init_vgmstream_txth(STREAMFILE* sf) {
         case PCM_FLOAT_LE:  coding = coding_PCMFLOAT; break;
         case SDX2:          coding = coding_SDX2; break;
         case DVI_IMA:       coding = coding_DVI_IMA; break;
+        case IMA_HV:        coding = coding_HV_IMA; break;
 #ifdef VGM_USE_MPEG
         case MPEG:          coding = coding_MPEG_layer3; break; /* we later find out exactly which */
 #endif
@@ -316,6 +318,7 @@ VGMSTREAM* init_vgmstream_txth(STREAMFILE* sf) {
         case coding_PSX_badflags:
         case coding_DVI_IMA:
         case coding_IMA:
+        case coding_HV_IMA:
         case coding_AICA:
         case coding_APPLE_IMA4:
         case coding_TGC:
@@ -968,6 +971,7 @@ static txth_codec_t parse_codec(txth_header* txth, const char* val) {
     else if (is_string(val,"XA_EA"))        return XA_EA;
     else if (is_string(val,"CP_YM"))        return CP_YM;
     else if (is_string(val,"PCM_FLOAT_LE")) return PCM_FLOAT_LE;
+    else if (is_string(val,"IMA_HV"))       return IMA_HV;
     /* special handling */
     else if (is_string(val,"name_value"))   return txth->name_values[0];
     else if (is_string(val,"name_value1"))  return txth->name_values[0];
@@ -2079,6 +2083,7 @@ static int get_bytes_to_samples(txth_header* txth, uint32_t bytes) {
 
         case IMA:
         case DVI_IMA:
+        case IMA_HV:
             return ima_bytes_to_samples(bytes, txth->channels);
         case AICA:
         case CP_YM: