avcodec/ohdec: Add h264/hevc OpenHarmony decoders

Author: quink-black

configure

@@ -3411,6 +3411,8 @@ h264_mf_encoder_deps="mediafoundation"
 h264_mmal_decoder_deps="mmal"
 h264_nvenc_encoder_deps="nvenc"
 h264_nvenc_encoder_select="atsc_a53"
+h264_oh_decoder_deps="ohcodec"
+h264_oh_decoder_select="h264_mp4toannexb_bsf"
 h264_omx_encoder_deps="omx"
 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
 h264_qsv_encoder_select="atsc_a53 qsvenc"
@@ -3433,6 +3435,8 @@ hevc_mediacodec_encoder_select="extract_extradata_bsf hevc_metadata"
 hevc_mf_encoder_deps="mediafoundation"
 hevc_nvenc_encoder_deps="nvenc"
 hevc_nvenc_encoder_select="atsc_a53"
+hevc_oh_decoder_deps="ohcodec"
+hevc_oh_decoder_select="hevc_mp4toannexb_bsf"
 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
 hevc_qsv_encoder_select="hevcparse qsvenc"
 hevc_rkmpp_decoder_deps="rkmpp"

libavcodec/Makefile

@@ -428,6 +428,7 @@ OBJS-$(CONFIG_H264_MEDIACODEC_ENCODER) += mediacodecenc.o
 OBJS-$(CONFIG_H264_MF_ENCODER)         += mfenc.o mf_utils.o
 OBJS-$(CONFIG_H264_MMAL_DECODER)       += mmaldec.o
 OBJS-$(CONFIG_H264_NVENC_ENCODER)      += nvenc_h264.o nvenc.o
+OBJS-$(CONFIG_H264_OH_DECODER)         += ohcodec.o ohdec.o
 OBJS-$(CONFIG_H264_OMX_ENCODER)        += omx.o
 OBJS-$(CONFIG_H264_QSV_DECODER)        += qsvdec.o
 OBJS-$(CONFIG_H264_QSV_ENCODER)        += qsvenc_h264.o
@@ -456,6 +457,7 @@ OBJS-$(CONFIG_HEVC_MEDIACODEC_DECODER) += mediacodecdec.o
 OBJS-$(CONFIG_HEVC_MEDIACODEC_ENCODER) += mediacodecenc.o
 OBJS-$(CONFIG_HEVC_MF_ENCODER)         += mfenc.o mf_utils.o
 OBJS-$(CONFIG_HEVC_NVENC_ENCODER)      += nvenc_hevc.o nvenc.o
+OBJS-$(CONFIG_HEVC_OH_DECODER)         += ohcodec.o ohdec.o
 OBJS-$(CONFIG_HEVC_QSV_DECODER)        += qsvdec.o
 OBJS-$(CONFIG_HEVC_QSV_ENCODER)        += qsvenc_hevc.o hevc/ps_enc.o
 OBJS-$(CONFIG_HEVC_RKMPP_DECODER)      += rkmppdec.o
@@ -1314,6 +1316,7 @@ SKIPHEADERS-$(CONFIG_MEDIACODEC)       += mediacodecdec_common.h mediacodec_surf
 SKIPHEADERS-$(CONFIG_MEDIAFOUNDATION)  += mf_utils.h
 SKIPHEADERS-$(CONFIG_NVDEC)            += nvdec.h
 SKIPHEADERS-$(CONFIG_NVENC)            += nvenc.h
+SKIPHEADERS-$(CONFIG_OHCODEC)          += ohcodec.h
 SKIPHEADERS-$(CONFIG_QSV)              += qsv.h qsv_internal.h
 SKIPHEADERS-$(CONFIG_QSVENC)           += qsvenc.h
 SKIPHEADERS-$(CONFIG_VAAPI)            += vaapi_decode.h vaapi_hevc.h vaapi_encode.h

libavcodec/allcodecs.c

@@ -860,6 +860,7 @@ extern const FFCodec ff_h264_amf_decoder;
 extern const FFCodec ff_h264_cuvid_decoder;
 extern const FFCodec ff_h264_mf_encoder;
 extern const FFCodec ff_h264_nvenc_encoder;
+extern const FFCodec ff_h264_oh_decoder;
 extern const FFCodec ff_h264_omx_encoder;
 extern const FFCodec ff_h264_qsv_encoder;
 extern const FFCodec ff_h264_v4l2m2m_encoder;
@@ -874,6 +875,7 @@ extern const FFCodec ff_hevc_mediacodec_decoder;
 extern const FFCodec ff_hevc_mediacodec_encoder;
 extern const FFCodec ff_hevc_mf_encoder;
 extern const FFCodec ff_hevc_nvenc_encoder;
+extern const FFCodec ff_hevc_oh_decoder;
 extern const FFCodec ff_hevc_qsv_encoder;
 extern const FFCodec ff_hevc_v4l2m2m_encoder;
 extern const FFCodec ff_hevc_vaapi_encoder;

libavcodec/ohcodec.c

@@ -0,0 +1,71 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * Copyright (c) 2025 Zhao Zhili <[email protected]>
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "ohcodec.h"
+
+#include "libavutil/error.h"
+
+int ff_oh_err_to_ff_err(OH_AVErrCode err)
+{
+    switch (err) {
+    case AV_ERR_OK:
+        return 0;
+    case AV_ERR_NO_MEMORY:
+        return AVERROR(ENOMEM);
+    case AV_ERR_OPERATE_NOT_PERMIT:
+        return AVERROR(EPERM);
+    case AV_ERR_INVALID_VAL:
+        return AVERROR(EINVAL);
+    case AV_ERR_IO:
+        return AVERROR(EIO);
+    case AV_ERR_TIMEOUT:
+        return AVERROR(ETIMEDOUT);
+    case AV_ERR_UNKNOWN:
+        return AVERROR_UNKNOWN;
+    case AV_ERR_SERVICE_DIED:
+        return AVERROR_EXTERNAL;
+    case AV_ERR_INVALID_STATE:
+        return AVERROR(EINVAL);
+    case AV_ERR_UNSUPPORT:
+        return AVERROR(ENOTSUP);
+    default:
+        return AVERROR_EXTERNAL;
+    }
+}
+
+static const struct {
+    OH_AVPixelFormat oh_pix;
+    enum AVPixelFormat pix;
+} oh_pix_map[] = {
+        {AV_PIXEL_FORMAT_NV12,           AV_PIX_FMT_NV12},
+        {AV_PIXEL_FORMAT_NV21,           AV_PIX_FMT_NV21},
+        {AV_PIXEL_FORMAT_YUVI420,        AV_PIX_FMT_YUV420P},
+        {AV_PIXEL_FORMAT_SURFACE_FORMAT, AV_PIX_FMT_OHCODEC},
+};
+
+enum AVPixelFormat ff_oh_pix_to_ff_pix(OH_AVPixelFormat oh_pix)
+{
+    for (size_t i = 0; i < FF_ARRAY_ELEMS(oh_pix_map); i++)
+        if (oh_pix_map[i].oh_pix == oh_pix)
+            return oh_pix_map[i].pix;
+
+    return AV_PIX_FMT_NONE;
+}
+

libavcodec/ohcodec.h

@@ -0,0 +1,56 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * Copyright (c) 2025 Zhao Zhili <[email protected]>
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_OHCODEC_H
+#define AVCODEC_OHCODEC_H
+
+#include <multimedia/player_framework/native_avbuffer.h>
+#include <multimedia/player_framework/native_avcodec_base.h>
+#include <multimedia/player_framework/native_averrors.h>
+#include <multimedia/player_framework/native_avformat.h>
+
+#include "libavutil/pixfmt.h"
+
+#include "codec_id.h"
+
+typedef struct OHBufferQueueItem {
+    uint32_t index;
+    OH_AVBuffer *buffer;
+} OHBufferQueueItem;
+
+int ff_oh_err_to_ff_err(OH_AVErrCode err);
+
+static inline const char *ff_oh_mime(enum AVCodecID codec_id, void *log)
+{
+    switch (codec_id) {
+    case AV_CODEC_ID_H264:
+        return OH_AVCODEC_MIMETYPE_VIDEO_AVC;
+    case AV_CODEC_ID_HEVC:
+        return OH_AVCODEC_MIMETYPE_VIDEO_HEVC;
+    default:
+        av_log(log, AV_LOG_ERROR, "Unsupported codec %s\n",
+               avcodec_get_name(codec_id));
+        return NULL;
+    }
+}
+
+enum AVPixelFormat ff_oh_pix_to_ff_pix(OH_AVPixelFormat oh_pix);
+
+#endif