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Image (Logo): uses native image decoder on Android

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Codec (Android): uses `availability` feature test
This commit is contained in:
李通洲
2026-09-18 01:10:18 +08:00
parent 97ac94eb44
commit 70d2dd37a6
7 changed files with 480 additions and 42 deletions
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src/detection/codec/codec_android.c
+24 -23
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@@ -1,9 +1,7 @@
#include "codec.h"
#include "common/library.h"
#include "common/androidApi.h"
#include "common/strutil.h"
#undef __INTRODUCED_IN
#define __INTRODUCED_IN(...)
#include <media/NdkMediaCodec.h>
static const struct {
@@ -35,33 +33,25 @@ static bool ffCodecIsLikelySoftware(const char* codecName) {
ffStrStartsWith(codecName, "OMX.PV.");
}
static bool ffCodecIsHardwareAccelerated(
AMediaCodec* codec,
typeof(&AMediaCodec_getName) ffAMediaCodec_getName,
typeof(&AMediaCodec_releaseName) ffAMediaCodec_releaseName) {
// Only the name query is newer than the API level this build targets: AMediaCodec_getName and
// AMediaCodec_releaseName are API 28, while creating and deleting a codec is API 21.
FF_REQUIRES_API(28) static bool ffCodecIsHardwareAccelerated(AMediaCodec* codec) {
if (!codec) {
return false;
}
char* codecName = nullptr;
media_status_t status = ffAMediaCodec_getName(codec, &codecName);
media_status_t status = AMediaCodec_getName(codec, &codecName);
if (status != AMEDIA_OK || !codecName) {
return false;
}
bool isHardware = !ffCodecIsLikelySoftware(codecName);
ffAMediaCodec_releaseName(codec, codecName);
AMediaCodec_releaseName(codec, codecName);
return isHardware;
}
const char* ffDetectCodecNative(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)
FF_REQUIRES_API(28) static const char* ffDetectCodecNativeImpl(FFCodecOptions* options, FFlist* result /*list of FFCodecResult*/) {
FFCodecType decoders = FF_CODEC_TYPE_NONE;
FFCodecType encoders = FF_CODEC_TYPE_NONE;
@@ -70,22 +60,22 @@ const char* ffDetectCodecNative(FFCodecOptions* options, FFlist* result /*list o
FFCodecType type = FF_CODEC_MIME_TO_TYPE[i].type;
if ((options->showType & FF_CODEC_SHOW_TYPE_DECODER) && !(decoders & type)) {
AMediaCodec* decoder = ffAMediaCodec_createDecoderByType(mime);
AMediaCodec* decoder = AMediaCodec_createDecoderByType(mime);
if (decoder) {
if (ffCodecIsHardwareAccelerated(decoder, ffAMediaCodec_getName, ffAMediaCodec_releaseName)) {
if (ffCodecIsHardwareAccelerated(decoder)) {
decoders |= type;
}
ffAMediaCodec_delete(decoder);
AMediaCodec_delete(decoder);
}
}
if ((options->showType & FF_CODEC_SHOW_TYPE_ENCODER) && !(encoders & type)) {
AMediaCodec* encoder = ffAMediaCodec_createEncoderByType(mime);
AMediaCodec* encoder = AMediaCodec_createEncoderByType(mime);
if (encoder) {
if (ffCodecIsHardwareAccelerated(encoder, ffAMediaCodec_getName, ffAMediaCodec_releaseName)) {
if (ffCodecIsHardwareAccelerated(encoder)) {
encoders |= type;
}
ffAMediaCodec_delete(encoder);
AMediaCodec_delete(encoder);
}
}
}
@@ -100,3 +90,14 @@ const char* ffDetectCodecNative(FFCodecOptions* options, FFlist* result /*list o
return nullptr;
}
const char* ffDetectCodecNative(FFCodecOptions* options, FFlist* result /*list of FFCodecResult*/) {
if (FF_API_AT_LEAST(28)) {
return ffDetectCodecNativeImpl(options, result);
}
// Reading the codec name is the only way to tell a hardware codec from a software one. Without
// it there is nothing to report, and listing the codecs as if they were accelerated would be a
// guess, so say why instead.
return "AMediaCodec_getName() requires Android 9 (API 28)";
}