lavc: add mpeg2 mediacodec decoder

Android TV and FireOS hardware supports mpeg2 hardware decoding via
MediaCodec.
Signed-off-by: Matthieu Bouron <matthieu.bouron@gmail.com>

configure

@@ -2656,6 +2656,7 @@ mpeg2_d3d11va_hwaccel_deps="d3d11va"
 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
 mpeg2_dxva2_hwaccel_deps="dxva2"
 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
+mpeg2_mediacodec_hwaccel_deps="mediacodec"
 mpeg2_mmal_hwaccel_deps="mmal"
 mpeg2_qsv_hwaccel_deps="libmfx"
 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
@@ -2762,6 +2763,7 @@ mpeg1_vdpau_decoder_select="mpeg1video_decoder"
 mpeg2_crystalhd_decoder_select="crystalhd"
 mpeg2_cuvid_decoder_deps="cuda cuvid"
 mpeg2_mmal_decoder_deps="mmal"
+mpeg2_mediacodec_decoder_deps="mediacodec"
 mpeg2_qsv_decoder_deps="libmfx"
 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
 mpeg2_qsv_encoder_deps="libmfx"

libavcodec/Makefile

@@ -423,6 +423,7 @@ OBJS-$(CONFIG_MPEG2_QSV_DECODER)       += qsvdec_other.o
 OBJS-$(CONFIG_MPEG2_QSV_ENCODER)       += qsvenc_mpeg2.o
 OBJS-$(CONFIG_MPEG2VIDEO_DECODER)      += mpeg12dec.o mpeg12.o mpeg12data.o
 OBJS-$(CONFIG_MPEG2VIDEO_ENCODER)      += mpeg12enc.o mpeg12.o
+OBJS-$(CONFIG_MPEG2_MEDIACODEC_DECODER) += mediacodecdec.o
 OBJS-$(CONFIG_MPEG2_VAAPI_ENCODER)     += vaapi_encode_mpeg2.o
 OBJS-$(CONFIG_MPEG4_DECODER)           += xvididct.o
 OBJS-$(CONFIG_MPEG4_MEDIACODEC_DECODER) += mediacodecdec.o

libavcodec/allcodecs.c

@@ -96,6 +96,7 @@ static void register_all(void)
     REGISTER_HWACCEL(MPEG2_VAAPI,       mpeg2_vaapi);
     REGISTER_HWACCEL(MPEG2_VDPAU,       mpeg2_vdpau);
     REGISTER_HWACCEL(MPEG2_VIDEOTOOLBOX, mpeg2_videotoolbox);
+    REGISTER_HWACCEL(MPEG2_MEDIACODEC,  mpeg2_mediacodec);
     REGISTER_HWACCEL(MPEG4_CUVID,       mpeg4_cuvid);
     REGISTER_HWACCEL(MPEG4_MEDIACODEC,  mpeg4_mediacodec);
     REGISTER_HWACCEL(MPEG4_MMAL,        mpeg4_mmal);
@@ -257,6 +258,7 @@ static void register_all(void)
     REGISTER_DECODER(MPEG2_MMAL,        mpeg2_mmal);
     REGISTER_DECODER(MPEG2_CRYSTALHD,   mpeg2_crystalhd);
     REGISTER_DECODER(MPEG2_QSV,         mpeg2_qsv);
+    REGISTER_DECODER(MPEG2_MEDIACODEC,  mpeg2_mediacodec);
     REGISTER_DECODER(MSA1,              msa1);
     REGISTER_DECODER(MSCC,              mscc);
     REGISTER_DECODER(MSMPEG4V1,         msmpeg4v1);

libavcodec/mediacodecdec.c

 /*
- * Android MediaCodec H.264 / H.265 / MPEG-4 / VP8 / VP9 decoders
+ * Android MediaCodec MPEG-2 / H.264 / H.265 / MPEG-4 / VP8 / VP9 decoders
  *
  * Copyright (c) 2015-2016 Matthieu Bouron <matthieu.bouron stupeflix.com>
  *
@@ -267,6 +267,19 @@ done:
 }
 #endif
 
+#if CONFIG_MPEG2_MEDIACODEC_DECODER
+static int mpeg2_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format)
+{
+    int ret = 0;
+
+    if (avctx->extradata) {
+        ff_AMediaFormat_setBuffer(format, "csd-0", avctx->extradata, avctx->extradata_size);
+    }
+
+    return ret;
+}
+#endif
+
 #if CONFIG_MPEG4_MEDIACODEC_DECODER
 static int mpeg4_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format)
 {
@@ -333,6 +346,15 @@ static av_cold int mediacodec_decode_init(AVCodecContext *avctx)
             goto done;
         break;
 #endif
+#if CONFIG_MPEG2_MEDIACODEC_DECODER
+    case AV_CODEC_ID_MPEG2VIDEO:
+        codec_mime = "video/mpeg2";
+
+        ret = mpeg2_set_extradata(avctx, format);
+        if (ret < 0)
+            goto done;
+        break;
+#endif
 #if CONFIG_MPEG4_MEDIACODEC_DECODER
     case AV_CODEC_ID_MPEG4:
         codec_mime = "video/mp4v-es",
@@ -575,6 +597,22 @@ AVCodec ff_hevc_mediacodec_decoder = {
 };
 #endif
 
+#if CONFIG_MPEG2_MEDIACODEC_DECODER
+AVCodec ff_mpeg2_mediacodec_decoder = {
+    .name           = "mpeg2_mediacodec",
+    .long_name      = NULL_IF_CONFIG_SMALL("MPEG-2 Android MediaCodec decoder"),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_MPEG2VIDEO,
+    .priv_data_size = sizeof(MediaCodecH264DecContext),
+    .init           = mediacodec_decode_init,
+    .decode         = mediacodec_decode_frame,
+    .flush          = mediacodec_decode_flush,
+    .close          = mediacodec_decode_close,
+    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING,
+    .caps_internal  = FF_CODEC_CAP_SETS_PKT_DTS,
+};
+#endif
+
 #if CONFIG_MPEG4_MEDIACODEC_DECODER
 AVCodec ff_mpeg4_mediacodec_decoder = {
     .name           = "mpeg4_mediacodec",

libavcodec/mediacodecdec_common.c

@@ -766,6 +766,13 @@ AVHWAccel ff_hevc_mediacodec_hwaccel = {
     .pix_fmt = AV_PIX_FMT_MEDIACODEC,
 };
 
+AVHWAccel ff_mpeg2_mediacodec_hwaccel = {
+    .name    = "mediacodec",
+    .type    = AVMEDIA_TYPE_VIDEO,
+    .id      = AV_CODEC_ID_MPEG2VIDEO,
+    .pix_fmt = AV_PIX_FMT_MEDIACODEC,
+};
+
 AVHWAccel ff_mpeg4_mediacodec_hwaccel = {
     .name    = "mediacodec",
     .type    = AVMEDIA_TYPE_VIDEO,