Codec (Android): adds support

2026-09-13 02:42:09 +02:00 · 2026-05-31 20:09:02 +08:00
parent b407669b69
commit 3e3a03a233
2 changed files with 99 additions and 0 deletions
@@ -639,6 +639,7 @@ elseif(ANDROID)
        src/detection/brightness/brightness_nosupport.c
        src/detection/btrfs/btrfs_nosupport.c
        src/detection/chassis/chassis_nosupport.c
+        src/detection/codec/codec_android.c
        src/detection/cpu/cpu_linux.c
        src/detection/cpucache/cpucache_linux.c
        src/detection/cursor/cursor_linux.c
@@ -0,0 +1,98 @@
+#include "codec.h"
+
+#include "common/library.h"
+#include "common/strutil.h"
+#undef __INTRODUCED_IN
+#define __INTRODUCED_IN(...)
+#include <media/NdkMediaCodec.h>
+
+static const struct {
+    const char* mime;
+    FFCodecType type;
+} FF_CODEC_MIME_TO_TYPE[] = {
+    { "video/3gpp", FF_CODEC_TYPE_H263 },
+    { "video/h263", FF_CODEC_TYPE_H263 },
+    { "video/mjpeg", FF_CODEC_TYPE_MJPEG },
+    { "video/mpeg2", FF_CODEC_TYPE_MPEG2 },
+    { "video/mp2v-es", FF_CODEC_TYPE_MPEG2 },
+    { "video/mp4v-es", FF_CODEC_TYPE_DIVX_XVID },
+    { "video/avc", FF_CODEC_TYPE_H264 },
+    { "video/hevc", FF_CODEC_TYPE_HEVC },
+    { "video/x-vnd.on2.vp8", FF_CODEC_TYPE_VP8 },
+    { "video/x-vnd.on2.vp9", FF_CODEC_TYPE_VP9 },
+    { "video/av01", FF_CODEC_TYPE_AV1 },
+    { "video/vvc", FF_CODEC_TYPE_VVC },
+};
+
+static bool ffCodecIsLikelySoftware(const char* codecName) {
+    if (!codecName) {
+        return true;
+    }
+
+    return ffStrStartsWith(codecName, "OMX.google.") ||
+        ffStrStartsWith(codecName, "c2.android.") ||
+        ffStrStartsWith(codecName, "OMX.ffmpeg.") ||
+        ffStrStartsWith(codecName, "OMX.PV.");
+}
+
+static bool ffCodecIsHardwareAccelerated(
+    AMediaCodec* codec,
+    __typeof__(&AMediaCodec_getName) ffAMediaCodec_getName,
+    __typeof__(&AMediaCodec_releaseName) ffAMediaCodec_releaseName) {
+    if (!codec) {
+        return false;
+    }
+
+    char* codecName = NULL;
+    media_status_t status = ffAMediaCodec_getName(codec, &codecName);
+    if (status != AMEDIA_OK || !codecName) {
+        return false;
+    }
+
+    bool isHardware = !ffCodecIsLikelySoftware(codecName);
+    ffAMediaCodec_releaseName(codec, codecName);
+    return isHardware;
+}
+
+const char* ffDetectCodec(FF_A_UNUSED FFCodecOptions* options, FFlist* result /*list of FFCodecResult*/) {
+    FF_LIBRARY_LOAD_MESSAGE(mediandk, "libmediandk.so", 0)
+    FF_LIBRARY_LOAD_SYMBOL_MESSAGE(mediandk, AMediaCodec_createDecoderByType)
+    FF_LIBRARY_LOAD_SYMBOL_MESSAGE(mediandk, AMediaCodec_createEncoderByType)
+    FF_LIBRARY_LOAD_SYMBOL_MESSAGE(mediandk, AMediaCodec_delete)
+    FF_LIBRARY_LOAD_SYMBOL_MESSAGE(mediandk, AMediaCodec_getName)
+    FF_LIBRARY_LOAD_SYMBOL_MESSAGE(mediandk, AMediaCodec_releaseName)
+
+    FFCodecType decoders = FF_CODEC_TYPE_NONE;
+    FFCodecType encoders = FF_CODEC_TYPE_NONE;
+
+    for (uint32_t i = 0; i < ARRAY_SIZE(FF_CODEC_MIME_TO_TYPE); ++i) {
+        const char* mime = FF_CODEC_MIME_TO_TYPE[i].mime;
+        FFCodecType type = FF_CODEC_MIME_TO_TYPE[i].type;
+
+        AMediaCodec* decoder = ffAMediaCodec_createDecoderByType(mime);
+        if (decoder) {
+            if (ffCodecIsHardwareAccelerated(decoder, ffAMediaCodec_getName, ffAMediaCodec_releaseName)) {
+                decoders |= type;
+            }
+            ffAMediaCodec_delete(decoder);
+        }
+
+        AMediaCodec* encoder = ffAMediaCodec_createEncoderByType(mime);
+        if (encoder) {
+            if (ffCodecIsHardwareAccelerated(encoder, ffAMediaCodec_getName, ffAMediaCodec_releaseName)) {
+                encoders |= type;
+            }
+            ffAMediaCodec_delete(encoder);
+        }
+    }
+
+    if (decoders != FF_CODEC_TYPE_NONE || encoders != FF_CODEC_TYPE_NONE) {
+        FFCodecResult* item = FF_LIST_ADD(FFCodecResult, *result);
+        ffStrbufInitStatic(&item->gpu, "Default");
+        item->decoders = decoders;
+        item->encoders = encoders;
+        item->platformApi = "AMediaCodec";
+    }
+    
+    return NULL;
+}