Add AML HW decoders

This adds the ffmpeg harware decoders to use the amcodec library on AMLogic devices

Author: LongChair

configure

@@ -310,6 +310,7 @@ External library support:
   --disable-nvenc          disable Nvidia video encoding code [autodetect]
   --enable-omx             enable OpenMAX IL code [no]
   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
+  --enable-aml             enable decoding via AmLogic HW decoders [no]
   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
@@ -1571,6 +1572,7 @@ HWACCEL_LIBRARY_LIST="
     vdpau
     videotoolbox_hwaccel
     xvmc
+    aml
 "
 
 DOCUMENT_LIST="
@@ -2565,6 +2567,9 @@ h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
 h264_mmal_decoder_deps="mmal"
 h264_mmal_decoder_select="mmal"
 h264_mmal_hwaccel_deps="mmal"
+h264_aml_decoder_deps="aml"
+h264_aml_decoder_select="aml"
+h264_aml_hwaccel_deps="aml"
 h264_omx_encoder_deps="omx"
 h264_qsv_hwaccel_deps="libmfx"
 h264_vaapi_hwaccel_deps="vaapi"
@@ -5779,6 +5784,8 @@ enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect
                                die "ERROR: mmal not found"; }
 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
 
+enabled aml               && { check_lib amcodec/codec.h codec_init "-lamcodec" || die "ERROR : amcodec not found."; }
+
 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||

libavcodec/Makefile

@@ -15,6 +15,7 @@ HEADERS = avcodec.h                                                     \
           vaapi.h                                                       \
           vda.h                                                         \
           vdpau.h                                                       \
+          aml.h                                                         \
           version.h                                                     \
           videotoolbox.h                                                \
           vorbis_parser.h                                               \
@@ -318,6 +319,7 @@ OBJS-$(CONFIG_H264_DECODER)            += h264dec.o h264_cabac.o h264_cavlc.o \
 OBJS-$(CONFIG_H264_CUVID_DECODER)      += cuvid.o
 OBJS-$(CONFIG_H264_MEDIACODEC_DECODER) += mediacodecdec_h264.o
 OBJS-$(CONFIG_H264_MMAL_DECODER)       += mmaldec.o
+OBJS-$(CONFIG_H264_AML_DECODER)        += amldec.o amltools.o amlqueue.o
 OBJS-$(CONFIG_H264_NVENC_ENCODER)      += nvenc_h264.o
 OBJS-$(CONFIG_NVENC_ENCODER)           += nvenc_h264.o
 OBJS-$(CONFIG_NVENC_H264_ENCODER)      += nvenc_h264.o

libavcodec/allcodecs.c

@@ -81,23 +81,30 @@ void avcodec_register_all(void)
     REGISTER_HWACCEL(H264_VDPAU,        h264_vdpau);
     REGISTER_HWACCEL(H264_VIDEOTOOLBOX, h264_videotoolbox);
     REGISTER_HWACCEL(HEVC_CUVID,        hevc_cuvid);
+    REGISTER_HWACCEL(H264_AML,          h264_aml);
     REGISTER_HWACCEL(HEVC_D3D11VA,      hevc_d3d11va);
     REGISTER_HWACCEL(HEVC_DXVA2,        hevc_dxva2);
     REGISTER_HWACCEL(HEVC_QSV,          hevc_qsv);
     REGISTER_HWACCEL(HEVC_VAAPI,        hevc_vaapi);
     REGISTER_HWACCEL(HEVC_VDPAU,        hevc_vdpau);
+    REGISTER_HWACCEL(HEVC_AML,          hevc_aml);
     REGISTER_HWACCEL(MPEG1_XVMC,        mpeg1_xvmc);
     REGISTER_HWACCEL(MPEG1_VDPAU,       mpeg1_vdpau);
     REGISTER_HWACCEL(MPEG1_VIDEOTOOLBOX, mpeg1_videotoolbox);
     REGISTER_HWACCEL(MPEG2_XVMC,        mpeg2_xvmc);
     REGISTER_HWACCEL(MPEG2_D3D11VA,     mpeg2_d3d11va);
     REGISTER_HWACCEL(MPEG2_DXVA2,       mpeg2_dxva2);
     REGISTER_HWACCEL(MPEG2_MMAL,        mpeg2_mmal);
+    REGISTER_HWACCEL(MPEG2_AML,         mpeg2_aml);
     REGISTER_HWACCEL(MPEG2_QSV,         mpeg2_qsv);
     REGISTER_HWACCEL(MPEG2_VAAPI,       mpeg2_vaapi);
     REGISTER_HWACCEL(MPEG2_VDPAU,       mpeg2_vdpau);
     REGISTER_HWACCEL(MPEG2_VIDEOTOOLBOX, mpeg2_videotoolbox);
     REGISTER_HWACCEL(MPEG4_MMAL,        mpeg4_mmal);
+    REGISTER_HWACCEL(MPEG4_AML,         mpeg4_aml);
+    REGISTER_HWACCEL(MSMPEG4V1_AML,     msmpeg4v1_aml);
+    REGISTER_HWACCEL(MSMPEG4V2_AML,     msmpeg4v2_aml);
+    REGISTER_HWACCEL(MSMPEG4V3_AML,     msmpeg4v3_aml);
     REGISTER_HWACCEL(MPEG4_VAAPI,       mpeg4_vaapi);
     REGISTER_HWACCEL(MPEG4_VDPAU,       mpeg4_vdpau);
     REGISTER_HWACCEL(MPEG4_VIDEOTOOLBOX, mpeg4_videotoolbox);
@@ -107,6 +114,7 @@ void avcodec_register_all(void)
     REGISTER_HWACCEL(VC1_VAAPI,         vc1_vaapi);
     REGISTER_HWACCEL(VC1_VDPAU,         vc1_vdpau);
     REGISTER_HWACCEL(VC1_MMAL,          vc1_mmal);
+    REGISTER_HWACCEL(VC1_AML,           vc1_aml);
     REGISTER_HWACCEL(VC1_QSV,           vc1_qsv);
     REGISTER_HWACCEL(VP8_CUVID,         vp8_cuvid);
     REGISTER_HWACCEL(VP9_CUVID,         vp9_cuvid);
@@ -202,9 +210,11 @@ void avcodec_register_all(void)
 #if FF_API_VDPAU
     REGISTER_DECODER(H264_VDPAU,        h264_vdpau);
 #endif
+    REGISTER_DECODER(H264_AML,          h264_aml)
     REGISTER_ENCDEC (HAP,               hap);
     REGISTER_DECODER(HEVC,              hevc);
     REGISTER_DECODER(HEVC_QSV,          hevc_qsv);
+    REGISTER_DECODER(HEVC_AML,          hevc_aml)
     REGISTER_DECODER(HNM4_VIDEO,        hnm4_video);
     REGISTER_DECODER(HQ_HQA,            hq_hqa);
     REGISTER_DECODER(HQX,               hqx);
@@ -240,6 +250,10 @@ void avcodec_register_all(void)
     REGISTER_ENCDEC (MPEG4,             mpeg4);
     REGISTER_DECODER(MPEG4_CRYSTALHD,   mpeg4_crystalhd);
     REGISTER_DECODER(MPEG4_MMAL,        mpeg4_mmal);
+    REGISTER_DECODER(MPEG4_AML,         mpeg4_aml);
+    REGISTER_DECODER(MSMPEG4V1_AML,     msmpeg4v1_aml);
+    REGISTER_DECODER(MSMPEG4V2_AML,     msmpeg4v2_aml);
+    REGISTER_DECODER(MSMPEG4V3_AML,     msmpeg4v3_aml);
 #if FF_API_VDPAU
     REGISTER_DECODER(MPEG4_VDPAU,       mpeg4_vdpau);
 #endif
@@ -249,6 +263,7 @@ void avcodec_register_all(void)
     REGISTER_DECODER(MPEG1_VDPAU,       mpeg1_vdpau);
 #endif
     REGISTER_DECODER(MPEG2_MMAL,        mpeg2_mmal);
+    REGISTER_DECODER(MPEG2_AML,         mpeg2_aml);
     REGISTER_DECODER(MPEG2_CRYSTALHD,   mpeg2_crystalhd);
     REGISTER_DECODER(MPEG2_QSV,         mpeg2_qsv);
     REGISTER_DECODER(MSA1,              msa1);
@@ -339,6 +354,7 @@ void avcodec_register_all(void)
 #endif
     REGISTER_DECODER(VC1IMAGE,          vc1image);
     REGISTER_DECODER(VC1_MMAL,          vc1_mmal);
+    REGISTER_DECODER(VC1_AML,           vc1_aml);
     REGISTER_DECODER(VC1_QSV,           vc1_qsv);
     REGISTER_ENCODER(VC2,               vc2);
     REGISTER_DECODER(VCR1,              vcr1);

libavcodec/aml.h

@@ -0,0 +1,11 @@
+#ifndef LAVC_AML_H
+#define LAVC_AML_H
+
+#include "libavutil/common.h"
+
+typedef struct {
+  unsigned long handle;
+  int free;
+} AMLBuffer;
+
+#endif // LAVC_AML_H