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MediaCodec: add mp3 and opus codecs

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This commit is contained in:
Julian Winkler
2025-01-26 22:27:19 +01:00
parent 0091fd6b59
commit 68e32eab45
3 changed files with 34 additions and 12 deletions
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32
src/api-impl-jni/media/android_media_MediaCodec.c
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@@ -33,6 +33,7 @@ struct ATL_codec_context {
union {
struct {
SwrContext *swr;
int sample_rate;
} audio;
struct {
struct SwsContext *sws; // for software decoding
@@ -45,6 +46,10 @@ JNIEXPORT jlong JNICALL Java_android_media_MediaCodec_native_1constructor(JNIEnv
{
const char *name = (*env)->GetStringUTFChars(env, codec_name, NULL);
const AVCodec *codec = avcodec_find_decoder_by_name(name);
if (!codec) {
printf("Codec %s not found\n", name);
exit(0);
}
(*env)->ReleaseStringUTFChars(env, codec_name, name);
if (!codec)
return 0;
@@ -65,15 +70,24 @@ JNIEXPORT void JNICALL Java_android_media_MediaCodec_native_1configure_1audio(JN
printf("Java_android_media_MediaCodec_native_1configure_1audio(%s, %d, %d)\n", codec_ctx->codec->name, sample_rate, nb_channels);
ctx->audio.sample_rate = sample_rate;
codec_ctx->sample_rate = sample_rate;
codec_ctx->ch_layout = (AVChannelLayout) AV_CHANNEL_LAYOUT_STEREO;
codec_ctx->ch_layout.nb_channels = nb_channels;
if (nb_channels == 1)
codec_ctx->ch_layout = (AVChannelLayout) AV_CHANNEL_LAYOUT_MONO;
else if (nb_channels == 2)
codec_ctx->ch_layout = (AVChannelLayout) AV_CHANNEL_LAYOUT_STEREO;
else {
printf("MediaCodec: Unsupported number of channels %d\n", nb_channels);
exit(0);
}
codec_ctx->extradata_size = get_nio_buffer_size(env, extradata);
data = get_nio_buffer(env, extradata, &array_ref, &array);
codec_ctx->extradata = av_mallocz(codec_ctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
memcpy(codec_ctx->extradata, data, codec_ctx->extradata_size);
release_nio_buffer(env, array_ref, array);
if (extradata) {
codec_ctx->extradata_size = get_nio_buffer_size(env, extradata);
data = get_nio_buffer(env, extradata, &array_ref, &array);
codec_ctx->extradata = av_mallocz(codec_ctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
memcpy(codec_ctx->extradata, data, codec_ctx->extradata_size);
release_nio_buffer(env, array_ref, array);
}
for (int i = 0; i < codec_ctx->extradata_size; i++) {
printf("params->extradata[%d] = %x\n", i, codec_ctx->extradata[i]);
@@ -270,7 +284,7 @@ JNIEXPORT void JNICALL Java_android_media_MediaCodec_native_1start(JNIEnv *env,
int ret = swr_alloc_set_opts2(&ctx->audio.swr,
&codec_ctx->ch_layout,
AV_SAMPLE_FMT_S16,
codec_ctx->sample_rate,
ctx->audio.sample_rate,
&codec_ctx->ch_layout,
codec_ctx->sample_fmt,
codec_ctx->sample_rate,
@@ -348,7 +362,7 @@ JNIEXPORT jint JNICALL Java_android_media_MediaCodec_native_1dequeueOutputBuffer
int outSamples = swr_convert(ctx->audio.swr, &raw_buffer, frame->nb_samples, (uint8_t const **) (frame->data), frame->nb_samples);
release_nio_buffer(env, array_ref, array);
_SET_INT_FIELD(buffer_info, "offset", 0);
_SET_INT_FIELD(buffer_info, "size", outSamples * 2 * 2);
_SET_INT_FIELD(buffer_info, "size", outSamples * 2 * codec_ctx->ch_layout.nb_channels);
av_frame_free(&frame);
} else if (codec_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {