From 9d4defbc92e4976f7d652149a215e2c165239e42 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <g...@haerdin.se>
Date: Wed, 11 Jan 2023 21:49:30 +0100
Subject: [PATCH 2/4] lavc/mediacodec_wrapper: Refactor
ff_AMediaCodecList_getCodecNameByType()
A lot shorter, nested variables and keeps going in case of exceptions.
Makes use of C99 declarations.
This patch has been released by Epic Games' legal department.
---
libavcodec/mediacodec_wrapper.c | 162 +++++++++-----------------------
1 file changed, 45 insertions(+), 117 deletions(-)
diff --git a/libavcodec/mediacodec_wrapper.c b/libavcodec/mediacodec_wrapper.c
index 34ec2134aa..82eead2833 100644
--- a/libavcodec/mediacodec_wrapper.c
+++ b/libavcodec/mediacodec_wrapper.c
@@ -2,6 +2,7 @@
* Android MediaCodec Wrapper
*
* Copyright (c) 2015-2016 Matthieu Bouron <matthieu.bouron stupeflix.com>
+ * Modifications by Epic Games, Inc., 2023.
*
* This file is part of FFmpeg.
*
@@ -365,26 +366,13 @@ int ff_AMediaCodecProfile_getProfileFromAVCodecContext(AVCodecContext *avctx)
char *ff_AMediaCodecList_getCodecNameByType(const char *mime, int profile, int encoder, void *log_ctx)
{
int ret;
- int i;
- int codec_count;
int found_codec = 0;
char *name = NULL;
- char *supported_type = NULL;
JNIEnv *env = NULL;
struct JNIAMediaCodecListFields jfields = { 0 };
struct JNIAMediaFormatFields mediaformat_jfields = { 0 };
- jobject codec_name = NULL;
-
- jobject info = NULL;
- jobject type = NULL;
- jobjectArray types = NULL;
-
- jobject capabilities = NULL;
- jobject profile_level = NULL;
- jobjectArray profile_levels = NULL;
-
JNI_GET_ENV_OR_RETURN(env, log_ctx, NULL);
if ((ret = ff_jni_init_jfields(env, &jfields, jni_amediacodeclist_mapping, 0, log_ctx)) < 0) {
@@ -395,29 +383,26 @@ char *ff_AMediaCodecList_getCodecNameByType(const char *mime, int profile, int e
goto done;
}
- codec_count = (*env)->CallStaticIntMethod(env, jfields.mediacodec_list_class, jfields.get_codec_count_id);
+ int codec_count = (*env)->CallStaticIntMethod(env, jfields.mediacodec_list_class, jfields.get_codec_count_id);
if (ff_jni_exception_check(env, 1, log_ctx) < 0) {
goto done;
}
- for(i = 0; i < codec_count; i++) {
- int j;
- int type_count;
- int is_encoder;
-
- info = (*env)->CallStaticObjectMethod(env, jfields.mediacodec_list_class, jfields.get_codec_info_at_id, i);
+ for (int i = 0; i < codec_count && !found_codec; i++) {
+ jobject info = (*env)->CallStaticObjectMethod(env, jfields.mediacodec_list_class, jfields.get_codec_info_at_id, i);
if (ff_jni_exception_check(env, 1, log_ctx) < 0) {
- goto done;
+ continue;
}
- types = (*env)->CallObjectMethod(env, info, jfields.get_supported_types_id);
+ jobject codec_name = NULL;
+ jobjectArray types = (*env)->CallObjectMethod(env, info, jfields.get_supported_types_id);
if (ff_jni_exception_check(env, 1, log_ctx) < 0) {
- goto done;
+ goto done_with_info;
}
- is_encoder = (*env)->CallBooleanMethod(env, info, jfields.is_encoder_id);
+ int is_encoder = (*env)->CallBooleanMethod(env, info, jfields.is_encoder_id);
if (ff_jni_exception_check(env, 1, log_ctx) < 0) {
- goto done;
+ goto done_with_info;
}
if (is_encoder != encoder) {
@@ -427,7 +412,7 @@ char *ff_AMediaCodecList_getCodecNameByType(const char *mime, int profile, int e
if (jfields.is_software_only_id) {
int is_software_only = (*env)->CallBooleanMethod(env, info, jfields.is_software_only_id);
if (ff_jni_exception_check(env, 1, log_ctx) < 0) {
- goto done;
+ goto done_with_info;
}
if (is_software_only) {
@@ -437,17 +422,12 @@ char *ff_AMediaCodecList_getCodecNameByType(const char *mime, int profile, int e
codec_name = (*env)->CallObjectMethod(env, info, jfields.get_name_id);
if (ff_jni_exception_check(env, 1, log_ctx) < 0) {
- goto done;
+ goto done_with_info;
}
name = ff_jni_jstring_to_utf_chars(env, codec_name, log_ctx);
if (!name) {
- goto done;
- }
-
- if (codec_name) {
- (*env)->DeleteLocalRef(env, codec_name);
- codec_name = NULL;
+ goto done_with_info;
}
/* Skip software decoders */
@@ -459,141 +439,89 @@ char *ff_AMediaCodecList_getCodecNameByType(const char *mime, int profile, int e
goto done_with_info;
}
- type_count = (*env)->GetArrayLength(env, types);
- for (j = 0; j < type_count; j++) {
- int k;
- int profile_count;
-
- type = (*env)->GetObjectArrayElement(env, types, j);
+ int type_count = (*env)->GetArrayLength(env, types);
+ for (int j = 0; j < type_count && !found_codec; j++) {
+ jobject type = (*env)->GetObjectArrayElement(env, types, j);
if (ff_jni_exception_check(env, 1, log_ctx) < 0) {
- goto done;
+ continue;
}
- supported_type = ff_jni_jstring_to_utf_chars(env, type, log_ctx);
+ jobject capabilities = NULL;
+ jobjectArray profile_levels = NULL;
+ char *supported_type = ff_jni_jstring_to_utf_chars(env, type, log_ctx);
if (!supported_type) {
- goto done;
+ goto done_with_type;
}
- if (av_strcasecmp(supported_type, mime)) {
+ int strcasecmp_ret = av_strcasecmp(supported_type, mime);
+ av_freep(&supported_type);
+ if (strcasecmp_ret) {
goto done_with_type;
}
capabilities = (*env)->CallObjectMethod(env, info, jfields.get_codec_capabilities_id, type);
if (ff_jni_exception_check(env, 1, log_ctx) < 0) {
- goto done;
+ goto done_with_type;
}
profile_levels = (*env)->GetObjectField(env, capabilities, jfields.profile_levels_id);
if (ff_jni_exception_check(env, 1, log_ctx) < 0) {
- goto done;
+ goto done_with_type;
}
- profile_count = (*env)->GetArrayLength(env, profile_levels);
- if (!profile_count) {
+ // match profile if desired by user (profile >= 0) and codec has non-empty profileLevels
+ int profile_count = (*env)->GetArrayLength(env, profile_levels);
+ if (!profile_count || profile < 0) {
found_codec = 1;
- }
- for (k = 0; k < profile_count; k++) {
- int supported_profile = 0;
-
- if (profile < 0) {
- found_codec = 1;
- break;
- }
-
- profile_level = (*env)->GetObjectArrayElement(env, profile_levels, k);
- if (ff_jni_exception_check(env, 1, log_ctx) < 0) {
- goto done;
- }
-
- supported_profile = (*env)->GetIntField(env, profile_level, jfields.profile_id);
- if (ff_jni_exception_check(env, 1, log_ctx) < 0) {
- goto done;
- }
-
- found_codec = profile == supported_profile;
+ } else {
+ for (int k = 0; k < profile_count && !found_codec; k++) {
+ jobject profile_level = (*env)->GetObjectArrayElement(env, profile_levels, k);
+ if (ff_jni_exception_check(env, 1, log_ctx) < 0) {
+ continue;
+ }
+
+ int supported_profile = (*env)->GetIntField(env, profile_level, jfields.profile_id);
+ if (ff_jni_exception_check(env, 1, log_ctx) >= 0) {
+ found_codec = profile == supported_profile;
+ }
- if (profile_level) {
(*env)->DeleteLocalRef(env, profile_level);
- profile_level = NULL;
- }
-
- if (found_codec) {
- break;
}
}
done_with_type:
if (profile_levels) {
(*env)->DeleteLocalRef(env, profile_levels);
- profile_levels = NULL;
}
if (capabilities) {
(*env)->DeleteLocalRef(env, capabilities);
- capabilities = NULL;
}
if (type) {
(*env)->DeleteLocalRef(env, type);
- type = NULL;
- }
-
- av_freep(&supported_type);
-
- if (found_codec) {
- break;
}
}
done_with_info:
if (info) {
(*env)->DeleteLocalRef(env, info);
- info = NULL;
}
if (types) {
(*env)->DeleteLocalRef(env, types);
- types = NULL;
}
- if (found_codec) {
- break;
+ if (codec_name) {
+ (*env)->DeleteLocalRef(env, codec_name);
}
- av_freep(&name);
+ if (!found_codec) {
+ av_freep(&name);
+ }
}
done:
- if (codec_name) {
- (*env)->DeleteLocalRef(env, codec_name);
- }
-
- if (info) {
- (*env)->DeleteLocalRef(env, info);
- }
-
- if (type) {
- (*env)->DeleteLocalRef(env, type);
- }
-
- if (types) {
- (*env)->DeleteLocalRef(env, types);
- }
-
- if (capabilities) {
- (*env)->DeleteLocalRef(env, capabilities);
- }
-
- if (profile_level) {
- (*env)->DeleteLocalRef(env, profile_level);
- }
-
- if (profile_levels) {
- (*env)->DeleteLocalRef(env, profile_levels);
- }
-
- av_freep(&supported_type);
-
ff_jni_reset_jfields(env, &jfields, jni_amediacodeclist_mapping, 0, log_ctx);
ff_jni_reset_jfields(env, &mediaformat_jfields, jni_amediaformat_mapping, 0, log_ctx);
--
2.30.2
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
