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-rw-r--r--libavcodec/mediacodecdec.c554
1 files changed, 554 insertions, 0 deletions
diff --git a/libavcodec/mediacodecdec.c b/libavcodec/mediacodecdec.c
new file mode 100644
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+++ b/libavcodec/mediacodecdec.c
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+/*
+ * Android MediaCodec MPEG-2 / H.264 / H.265 / MPEG-4 / VP8 / VP9 decoders
+ *
+ * Copyright (c) 2015-2016 Matthieu Bouron <matthieu.bouron stupeflix.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * 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 <stdint.h>
+#include <string.h>
+
+#include "libavutil/avassert.h"
+#include "libavutil/common.h"
+#include "libavutil/opt.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/pixfmt.h"
+#include "libavutil/internal.h"
+
+#include "avcodec.h"
+#include "decode.h"
+#include "h264_parse.h"
+#include "hevc_parse.h"
+#include "hwaccel.h"
+#include "internal.h"
+#include "mediacodec_wrapper.h"
+#include "mediacodecdec_common.h"
+
+typedef struct MediaCodecH264DecContext {
+
+ AVClass *avclass;
+
+ MediaCodecDecContext *ctx;
+
+ AVPacket buffered_pkt;
+
+ int delay_flush;
+ int amlogic_mpeg2_api23_workaround;
+
+} MediaCodecH264DecContext;
+
+static av_cold int mediacodec_decode_close(AVCodecContext *avctx)
+{
+ MediaCodecH264DecContext *s = avctx->priv_data;
+
+ ff_mediacodec_dec_close(avctx, s->ctx);
+ s->ctx = NULL;
+
+ av_packet_unref(&s->buffered_pkt);
+
+ return 0;
+}
+
+#if CONFIG_H264_MEDIACODEC_DECODER || CONFIG_HEVC_MEDIACODEC_DECODER
+static int h2645_ps_to_nalu(const uint8_t *src, int src_size, uint8_t **out, int *out_size)
+{
+ int i;
+ int ret = 0;
+ uint8_t *p = NULL;
+ static const uint8_t nalu_header[] = { 0x00, 0x00, 0x00, 0x01 };
+
+ if (!out || !out_size) {
+ return AVERROR(EINVAL);
+ }
+
+ p = av_malloc(sizeof(nalu_header) + src_size);
+ if (!p) {
+ return AVERROR(ENOMEM);
+ }
+
+ *out = p;
+ *out_size = sizeof(nalu_header) + src_size;
+
+ memcpy(p, nalu_header, sizeof(nalu_header));
+ memcpy(p + sizeof(nalu_header), src, src_size);
+
+ /* Escape 0x00, 0x00, 0x0{0-3} pattern */
+ for (i = 4; i < *out_size; i++) {
+ if (i < *out_size - 3 &&
+ p[i + 0] == 0 &&
+ p[i + 1] == 0 &&
+ p[i + 2] <= 3) {
+ uint8_t *new;
+
+ *out_size += 1;
+ new = av_realloc(*out, *out_size);
+ if (!new) {
+ ret = AVERROR(ENOMEM);
+ goto done;
+ }
+ *out = p = new;
+
+ i = i + 2;
+ memmove(p + i + 1, p + i, *out_size - (i + 1));
+ p[i] = 0x03;
+ }
+ }
+done:
+ if (ret < 0) {
+ av_freep(out);
+ *out_size = 0;
+ }
+
+ return ret;
+}
+#endif
+
+#if CONFIG_H264_MEDIACODEC_DECODER
+static int h264_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format)
+{
+ int i;
+ int ret;
+
+ H264ParamSets ps;
+ const PPS *pps = NULL;
+ const SPS *sps = NULL;
+ int is_avc = 0;
+ int nal_length_size = 0;
+
+ memset(&ps, 0, sizeof(ps));
+
+ ret = ff_h264_decode_extradata(avctx->extradata, avctx->extradata_size,
+ &ps, &is_avc, &nal_length_size, 0, avctx);
+ if (ret < 0) {
+ goto done;
+ }
+
+ for (i = 0; i < MAX_PPS_COUNT; i++) {
+ if (ps.pps_list[i]) {
+ pps = (const PPS*)ps.pps_list[i]->data;
+ break;
+ }
+ }
+
+ if (pps) {
+ if (ps.sps_list[pps->sps_id]) {
+ sps = (const SPS*)ps.sps_list[pps->sps_id]->data;
+ }
+ }
+
+ if (pps && sps) {
+ uint8_t *data = NULL;
+ int data_size = 0;
+
+ if ((ret = h2645_ps_to_nalu(sps->data, sps->data_size, &data, &data_size)) < 0) {
+ goto done;
+ }
+ ff_AMediaFormat_setBuffer(format, "csd-0", (void*)data, data_size);
+ av_freep(&data);
+
+ if ((ret = h2645_ps_to_nalu(pps->data, pps->data_size, &data, &data_size)) < 0) {
+ goto done;
+ }
+ ff_AMediaFormat_setBuffer(format, "csd-1", (void*)data, data_size);
+ av_freep(&data);
+ } else {
+ av_log(avctx, AV_LOG_ERROR, "Could not extract PPS/SPS from extradata");
+ ret = AVERROR_INVALIDDATA;
+ }
+
+done:
+ ff_h264_ps_uninit(&ps);
+
+ return ret;
+}
+#endif
+
+#if CONFIG_HEVC_MEDIACODEC_DECODER
+static int hevc_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format)
+{
+ int i;
+ int ret;
+
+ HEVCParamSets ps;
+ HEVCSEI sei;
+
+ const HEVCVPS *vps = NULL;
+ const HEVCPPS *pps = NULL;
+ const HEVCSPS *sps = NULL;
+ int is_nalff = 0;
+ int nal_length_size = 0;
+
+ uint8_t *vps_data = NULL;
+ uint8_t *sps_data = NULL;
+ uint8_t *pps_data = NULL;
+ int vps_data_size = 0;
+ int sps_data_size = 0;
+ int pps_data_size = 0;
+
+ memset(&ps, 0, sizeof(ps));
+ memset(&sei, 0, sizeof(sei));
+
+ ret = ff_hevc_decode_extradata(avctx->extradata, avctx->extradata_size,
+ &ps, &sei, &is_nalff, &nal_length_size, 0, 1, avctx);
+ if (ret < 0) {
+ goto done;
+ }
+
+ for (i = 0; i < HEVC_MAX_VPS_COUNT; i++) {
+ if (ps.vps_list[i]) {
+ vps = (const HEVCVPS*)ps.vps_list[i]->data;
+ break;
+ }
+ }
+
+ for (i = 0; i < HEVC_MAX_PPS_COUNT; i++) {
+ if (ps.pps_list[i]) {
+ pps = (const HEVCPPS*)ps.pps_list[i]->data;
+ break;
+ }
+ }
+
+ if (pps) {
+ if (ps.sps_list[pps->sps_id]) {
+ sps = (const HEVCSPS*)ps.sps_list[pps->sps_id]->data;
+ }
+ }
+
+ if (vps && pps && sps) {
+ uint8_t *data;
+ int data_size;
+
+ if ((ret = h2645_ps_to_nalu(vps->data, vps->data_size, &vps_data, &vps_data_size)) < 0 ||
+ (ret = h2645_ps_to_nalu(sps->data, sps->data_size, &sps_data, &sps_data_size)) < 0 ||
+ (ret = h2645_ps_to_nalu(pps->data, pps->data_size, &pps_data, &pps_data_size)) < 0) {
+ goto done;
+ }
+
+ data_size = vps_data_size + sps_data_size + pps_data_size;
+ data = av_mallocz(data_size);
+ if (!data) {
+ ret = AVERROR(ENOMEM);
+ goto done;
+ }
+
+ memcpy(data , vps_data, vps_data_size);
+ memcpy(data + vps_data_size , sps_data, sps_data_size);
+ memcpy(data + vps_data_size + sps_data_size, pps_data, pps_data_size);
+
+ ff_AMediaFormat_setBuffer(format, "csd-0", data, data_size);
+
+ av_freep(&data);
+ } else {
+ av_log(avctx, AV_LOG_ERROR, "Could not extract VPS/PPS/SPS from extradata");
+ ret = AVERROR_INVALIDDATA;
+ }
+
+done:
+ ff_hevc_ps_uninit(&ps);
+
+ av_freep(&vps_data);
+ av_freep(&sps_data);
+ av_freep(&pps_data);
+
+ return ret;
+}
+#endif
+
+#if CONFIG_MPEG2_MEDIACODEC_DECODER || \
+ CONFIG_MPEG4_MEDIACODEC_DECODER || \
+ CONFIG_VP8_MEDIACODEC_DECODER || \
+ CONFIG_VP9_MEDIACODEC_DECODER
+static int common_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
+
+static av_cold int mediacodec_decode_init(AVCodecContext *avctx)
+{
+ int ret;
+ int sdk_int;
+
+ const char *codec_mime = NULL;
+
+ FFAMediaFormat *format = NULL;
+ MediaCodecH264DecContext *s = avctx->priv_data;
+
+ format = ff_AMediaFormat_new();
+ if (!format) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create media format\n");
+ ret = AVERROR_EXTERNAL;
+ goto done;
+ }
+
+ switch (avctx->codec_id) {
+#if CONFIG_H264_MEDIACODEC_DECODER
+ case AV_CODEC_ID_H264:
+ codec_mime = "video/avc";
+
+ ret = h264_set_extradata(avctx, format);
+ if (ret < 0)
+ goto done;
+ break;
+#endif
+#if CONFIG_HEVC_MEDIACODEC_DECODER
+ case AV_CODEC_ID_HEVC:
+ codec_mime = "video/hevc";
+
+ ret = hevc_set_extradata(avctx, format);
+ if (ret < 0)
+ goto done;
+ break;
+#endif
+#if CONFIG_MPEG2_MEDIACODEC_DECODER
+ case AV_CODEC_ID_MPEG2VIDEO:
+ codec_mime = "video/mpeg2";
+
+ ret = common_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",
+
+ ret = common_set_extradata(avctx, format);
+ if (ret < 0)
+ goto done;
+ break;
+#endif
+#if CONFIG_VP8_MEDIACODEC_DECODER
+ case AV_CODEC_ID_VP8:
+ codec_mime = "video/x-vnd.on2.vp8";
+
+ ret = common_set_extradata(avctx, format);
+ if (ret < 0)
+ goto done;
+ break;
+#endif
+#if CONFIG_VP9_MEDIACODEC_DECODER
+ case AV_CODEC_ID_VP9:
+ codec_mime = "video/x-vnd.on2.vp9";
+
+ ret = common_set_extradata(avctx, format);
+ if (ret < 0)
+ goto done;
+ break;
+#endif
+ default:
+ av_assert0(0);
+ }
+
+ ff_AMediaFormat_setString(format, "mime", codec_mime);
+ ff_AMediaFormat_setInt32(format, "width", avctx->width);
+ ff_AMediaFormat_setInt32(format, "height", avctx->height);
+
+ s->ctx = av_mallocz(sizeof(*s->ctx));
+ if (!s->ctx) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to allocate MediaCodecDecContext\n");
+ ret = AVERROR(ENOMEM);
+ goto done;
+ }
+
+ s->ctx->delay_flush = s->delay_flush;
+
+ if ((ret = ff_mediacodec_dec_init(avctx, s->ctx, codec_mime, format)) < 0) {
+ s->ctx = NULL;
+ goto done;
+ }
+
+ av_log(avctx, AV_LOG_INFO,
+ "MediaCodec started successfully: codec = %s, ret = %d\n",
+ s->ctx->codec_name, ret);
+
+ sdk_int = ff_Build_SDK_INT(avctx);
+ if (sdk_int <= 23 &&
+ strcmp(s->ctx->codec_name, "OMX.amlogic.mpeg2.decoder.awesome") == 0) {
+ av_log(avctx, AV_LOG_INFO, "Enabling workaround for %s on API=%d\n",
+ s->ctx->codec_name, sdk_int);
+ s->amlogic_mpeg2_api23_workaround = 1;
+ }
+
+done:
+ if (format) {
+ ff_AMediaFormat_delete(format);
+ }
+
+ if (ret < 0) {
+ mediacodec_decode_close(avctx);
+ }
+
+ return ret;
+}
+
+static int mediacodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
+{
+ MediaCodecH264DecContext *s = avctx->priv_data;
+ int ret;
+ ssize_t index;
+
+ /* In delay_flush mode, wait until the user has released or rendered
+ all retained frames. */
+ if (s->delay_flush && ff_mediacodec_dec_is_flushing(avctx, s->ctx)) {
+ if (!ff_mediacodec_dec_flush(avctx, s->ctx)) {
+ return AVERROR(EAGAIN);
+ }
+ }
+
+ /* poll for new frame */
+ ret = ff_mediacodec_dec_receive(avctx, s->ctx, frame, false);
+ if (ret != AVERROR(EAGAIN))
+ return ret;
+
+ /* feed decoder */
+ while (1) {
+ if (s->ctx->current_input_buffer < 0) {
+ /* poll for input space */
+ index = ff_AMediaCodec_dequeueInputBuffer(s->ctx->codec, 0);
+ if (index < 0) {
+ /* no space, block for an output frame to appear */
+ return ff_mediacodec_dec_receive(avctx, s->ctx, frame, true);
+ }
+ s->ctx->current_input_buffer = index;
+ }
+
+ /* try to flush any buffered packet data */
+ if (s->buffered_pkt.size > 0) {
+ ret = ff_mediacodec_dec_send(avctx, s->ctx, &s->buffered_pkt, false);
+ if (ret >= 0) {
+ s->buffered_pkt.size -= ret;
+ s->buffered_pkt.data += ret;
+ if (s->buffered_pkt.size <= 0)
+ av_packet_unref(&s->buffered_pkt);
+ } else if (ret < 0 && ret != AVERROR(EAGAIN)) {
+ return ret;
+ }
+
+ if (s->amlogic_mpeg2_api23_workaround && s->buffered_pkt.size <= 0) {
+ /* fallthrough to fetch next packet regardless of input buffer space */
+ } else {
+ /* poll for space again */
+ continue;
+ }
+ }
+
+ /* fetch new packet or eof */
+ ret = ff_decode_get_packet(avctx, &s->buffered_pkt);
+ if (ret == AVERROR_EOF) {
+ AVPacket null_pkt = { 0 };
+ ret = ff_mediacodec_dec_send(avctx, s->ctx, &null_pkt, true);
+ if (ret < 0)
+ return ret;
+ } else if (ret == AVERROR(EAGAIN) && s->ctx->current_input_buffer < 0) {
+ return ff_mediacodec_dec_receive(avctx, s->ctx, frame, true);
+ } else if (ret < 0) {
+ return ret;
+ }
+ }
+
+ return AVERROR(EAGAIN);
+}
+
+static void mediacodec_decode_flush(AVCodecContext *avctx)
+{
+ MediaCodecH264DecContext *s = avctx->priv_data;
+
+ av_packet_unref(&s->buffered_pkt);
+
+ ff_mediacodec_dec_flush(avctx, s->ctx);
+}
+
+static const AVCodecHWConfigInternal *mediacodec_hw_configs[] = {
+ &(const AVCodecHWConfigInternal) {
+ .public = {
+ .pix_fmt = AV_PIX_FMT_MEDIACODEC,
+ .methods = AV_CODEC_HW_CONFIG_METHOD_AD_HOC |
+ AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX,
+ .device_type = AV_HWDEVICE_TYPE_MEDIACODEC,
+ },
+ .hwaccel = NULL,
+ },
+ NULL
+};
+
+#define OFFSET(x) offsetof(MediaCodecH264DecContext, x)
+#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
+static const AVOption ff_mediacodec_vdec_options[] = {
+ { "delay_flush", "Delay flush until hw output buffers are returned to the decoder",
+ OFFSET(delay_flush), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, VD },
+ { NULL }
+};
+
+#define DECLARE_MEDIACODEC_VCLASS(short_name) \
+static const AVClass ff_##short_name##_mediacodec_dec_class = { \
+ .class_name = #short_name "_mediacodec", \
+ .item_name = av_default_item_name, \
+ .option = ff_mediacodec_vdec_options, \
+ .version = LIBAVUTIL_VERSION_INT, \
+};
+
+#define DECLARE_MEDIACODEC_VDEC(short_name, full_name, codec_id, bsf) \
+DECLARE_MEDIACODEC_VCLASS(short_name) \
+AVCodec ff_##short_name##_mediacodec_decoder = { \
+ .name = #short_name "_mediacodec", \
+ .long_name = NULL_IF_CONFIG_SMALL(full_name " Android MediaCodec decoder"), \
+ .type = AVMEDIA_TYPE_VIDEO, \
+ .id = codec_id, \
+ .priv_class = &ff_##short_name##_mediacodec_dec_class, \
+ .priv_data_size = sizeof(MediaCodecH264DecContext), \
+ .init = mediacodec_decode_init, \
+ .receive_frame = mediacodec_receive_frame, \
+ .flush = mediacodec_decode_flush, \
+ .close = mediacodec_decode_close, \
+ .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HARDWARE, \
+ .caps_internal = FF_CODEC_CAP_SETS_PKT_DTS, \
+ .bsfs = bsf, \
+ .hw_configs = mediacodec_hw_configs, \
+ .wrapper_name = "mediacodec", \
+}; \
+
+#if CONFIG_H264_MEDIACODEC_DECODER
+DECLARE_MEDIACODEC_VDEC(h264, "H.264", AV_CODEC_ID_H264, "h264_mp4toannexb")
+#endif
+
+#if CONFIG_HEVC_MEDIACODEC_DECODER
+DECLARE_MEDIACODEC_VDEC(hevc, "H.265", AV_CODEC_ID_HEVC, "hevc_mp4toannexb")
+#endif
+
+#if CONFIG_MPEG2_MEDIACODEC_DECODER
+DECLARE_MEDIACODEC_VDEC(mpeg2, "MPEG-2", AV_CODEC_ID_MPEG2VIDEO, NULL)
+#endif
+
+#if CONFIG_MPEG4_MEDIACODEC_DECODER
+DECLARE_MEDIACODEC_VDEC(mpeg4, "MPEG-4", AV_CODEC_ID_MPEG4, NULL)
+#endif
+
+#if CONFIG_VP8_MEDIACODEC_DECODER
+DECLARE_MEDIACODEC_VDEC(vp8, "VP8", AV_CODEC_ID_VP8, NULL)
+#endif
+
+#if CONFIG_VP9_MEDIACODEC_DECODER
+DECLARE_MEDIACODEC_VDEC(vp9, "VP9", AV_CODEC_ID_VP9, NULL)
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-14 20:30:56 +0000