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ffmpeg/libavcodec/rkmppdec.c

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/*
* RockChip MPP Video Decoder
* Copyright (c) 2017 Lionel CHAZALLON
*
* 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 <drm_fourcc.h>
#include <pthread.h>
#include <rockchip/mpp_buffer.h>
#include <rockchip/rk_mpi.h>
#include <time.h>
#include <unistd.h>
#include "avcodec.h"
#include "decode.h"
#include "internal.h"
#include "libavutil/buffer.h"
#include "libavutil/common.h"
#include "libavutil/frame.h"
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_drm.h"
#include "libavutil/imgutils.h"
#include "libavutil/log.h"
#define RECEIVE_FRAME_TIMEOUT 100
#define FRAMEGROUP_MAX_FRAMES 16
typedef struct {
MppCtx ctx;
MppApi *mpi;
MppBufferGroup frame_group;
char first_frame;
char first_packet;
char eos_reached;
AVBufferRef *frames_ref;
AVBufferRef *device_ref;
} RKMPPDecoder;
typedef struct {
AVClass *av_class;
AVBufferRef *decoder_ref;
} RKMPPDecodeContext;
typedef struct {
MppFrame frame;
AVBufferRef *decoder_ref;
} RKMPPFrameContext;
static MppCodingType rkmpp_get_codingtype(AVCodecContext *avctx)
{
switch (avctx->codec_id) {
case AV_CODEC_ID_H264: return MPP_VIDEO_CodingAVC;
case AV_CODEC_ID_HEVC: return MPP_VIDEO_CodingHEVC;
case AV_CODEC_ID_VP8: return MPP_VIDEO_CodingVP8;
case AV_CODEC_ID_VP9: return MPP_VIDEO_CodingVP9;
default: return MPP_VIDEO_CodingUnused;
}
}
static uint32_t rkmpp_get_frameformat(MppFrameFormat mppformat)
{
switch (mppformat) {
case MPP_FMT_YUV420SP: return DRM_FORMAT_NV12;
#ifdef DRM_FORMAT_NV12_10
case MPP_FMT_YUV420SP_10BIT: return DRM_FORMAT_NV12_10;
#endif
default: return 0;
}
}
static int rkmpp_write_data(AVCodecContext *avctx, uint8_t *buffer, int size, int64_t pts)
{
RKMPPDecodeContext *rk_context = avctx->priv_data;
RKMPPDecoder *decoder = (RKMPPDecoder *)rk_context->decoder_ref->data;
int ret;
MppPacket packet;
// create the MPP packet
ret = mpp_packet_init(&packet, buffer, size);
if (ret != MPP_OK) {
av_log(avctx, AV_LOG_ERROR, "Failed to init MPP packet (code = %d)\n", ret);
return AVERROR_UNKNOWN;
}
mpp_packet_set_pts(packet, pts);
if (!buffer)
mpp_packet_set_eos(packet);
ret = decoder->mpi->decode_put_packet(decoder->ctx, packet);
if (ret != MPP_OK) {
if (ret == MPP_ERR_BUFFER_FULL) {
av_log(avctx, AV_LOG_DEBUG, "Buffer full writing %d bytes to decoder\n", size);
ret = AVERROR(EAGAIN);
} else
ret = AVERROR_UNKNOWN;
}
else
av_log(avctx, AV_LOG_DEBUG, "Wrote %d bytes to decoder\n", size);
mpp_packet_deinit(&packet);
return ret;
}
static int rkmpp_close_decoder(AVCodecContext *avctx)
{
RKMPPDecodeContext *rk_context = avctx->priv_data;
av_buffer_unref(&rk_context->decoder_ref);
return 0;
}
static void rkmpp_release_decoder(void *opaque, uint8_t *data)
{
RKMPPDecoder *decoder = (RKMPPDecoder *)data;
if (decoder->mpi) {
decoder->mpi->reset(decoder->ctx);
mpp_destroy(decoder->ctx);
decoder->ctx = NULL;
}
if (decoder->frame_group) {
mpp_buffer_group_put(decoder->frame_group);
decoder->frame_group = NULL;
}
av_buffer_unref(&decoder->frames_ref);
av_buffer_unref(&decoder->device_ref);
av_free(decoder);
}
static int rkmpp_init_decoder(AVCodecContext *avctx)
{
RKMPPDecodeContext *rk_context = avctx->priv_data;
RKMPPDecoder *decoder = NULL;
MppCodingType codectype = MPP_VIDEO_CodingUnused;
int ret;
RK_S64 paramS64;
RK_S32 paramS32;
avctx->pix_fmt = AV_PIX_FMT_DRM_PRIME;
// create a decoder and a ref to it
decoder = av_mallocz(sizeof(RKMPPDecoder));
if (!decoder) {
ret = AVERROR(ENOMEM);
goto fail;
}
rk_context->decoder_ref = av_buffer_create((uint8_t *)decoder, sizeof(*decoder), rkmpp_release_decoder,
NULL, AV_BUFFER_FLAG_READONLY);
if (!rk_context->decoder_ref) {
av_free(decoder);
ret = AVERROR(ENOMEM);
goto fail;
}
av_log(avctx, AV_LOG_DEBUG, "Initializing RKMPP decoder.\n");
codectype = rkmpp_get_codingtype(avctx);
if (codectype == MPP_VIDEO_CodingUnused) {
av_log(avctx, AV_LOG_ERROR, "Unknown codec type (%d).\n", avctx->codec_id);
ret = AVERROR_UNKNOWN;
goto fail;
}
ret = mpp_check_support_format(MPP_CTX_DEC, codectype);
if (ret != MPP_OK) {
av_log(avctx, AV_LOG_ERROR, "Codec type (%d) unsupported by MPP\n", avctx->codec_id);
ret = AVERROR_UNKNOWN;
goto fail;
}
// Create the MPP context
ret = mpp_create(&decoder->ctx, &decoder->mpi);
if (ret != MPP_OK) {
av_log(avctx, AV_LOG_ERROR, "Failed to create MPP context (code = %d).\n", ret);
ret = AVERROR_UNKNOWN;
goto fail;
}
// initialize mpp
ret = mpp_init(decoder->ctx, MPP_CTX_DEC, codectype);
if (ret != MPP_OK) {
av_log(avctx, AV_LOG_ERROR, "Failed to initialize MPP context (code = %d).\n", ret);
ret = AVERROR_UNKNOWN;
goto fail;
}
// make decode calls blocking with a timeout
paramS32 = MPP_POLL_BLOCK;
ret = decoder->mpi->control(decoder->ctx, MPP_SET_OUTPUT_BLOCK, &paramS32);
if (ret != MPP_OK) {
av_log(avctx, AV_LOG_ERROR, "Failed to set blocking mode on MPI (code = %d).\n", ret);
ret = AVERROR_UNKNOWN;
goto fail;
}
paramS64 = RECEIVE_FRAME_TIMEOUT;
ret = decoder->mpi->control(decoder->ctx, MPP_SET_OUTPUT_BLOCK_TIMEOUT, &paramS64);
if (ret != MPP_OK) {
av_log(avctx, AV_LOG_ERROR, "Failed to set block timeout on MPI (code = %d).\n", ret);
ret = AVERROR_UNKNOWN;
goto fail;
}
ret = mpp_buffer_group_get_internal(&decoder->frame_group, MPP_BUFFER_TYPE_ION);
if (ret) {
av_log(avctx, AV_LOG_ERROR, "Failed to retrieve buffer group (code = %d)\n", ret);
ret = AVERROR_UNKNOWN;
goto fail;
}
ret = decoder->mpi->control(decoder->ctx, MPP_DEC_SET_EXT_BUF_GROUP, decoder->frame_group);
if (ret) {
av_log(avctx, AV_LOG_ERROR, "Failed to assign buffer group (code = %d)\n", ret);
ret = AVERROR_UNKNOWN;
goto fail;
}
ret = mpp_buffer_group_limit_config(decoder->frame_group, 0, FRAMEGROUP_MAX_FRAMES);
if (ret) {
av_log(avctx, AV_LOG_ERROR, "Failed to set buffer group limit (code = %d)\n", ret);
ret = AVERROR_UNKNOWN;
goto fail;
}
decoder->first_packet = 1;
av_log(avctx, AV_LOG_DEBUG, "RKMPP decoder initialized successfully.\n");
decoder->device_ref = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_DRM);
if (!decoder->device_ref) {
ret = AVERROR(ENOMEM);
goto fail;
}
ret = av_hwdevice_ctx_init(decoder->device_ref);
if (ret < 0)
goto fail;
return 0;
fail:
av_log(avctx, AV_LOG_ERROR, "Failed to initialize RKMPP decoder.\n");
rkmpp_close_decoder(avctx);
return ret;
}
static int rkmpp_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
{
RKMPPDecodeContext *rk_context = avctx->priv_data;
RKMPPDecoder *decoder = (RKMPPDecoder *)rk_context->decoder_ref->data;
int ret;
// handle EOF
if (!avpkt->size) {
av_log(avctx, AV_LOG_DEBUG, "End of stream.\n");
decoder->eos_reached = 1;
ret = rkmpp_write_data(avctx, NULL, 0, 0);
if (ret)
av_log(avctx, AV_LOG_ERROR, "Failed to send EOS to decoder (code = %d)\n", ret);
return ret;
}
// on first packet, send extradata
if (decoder->first_packet) {
if (avctx->extradata_size) {
ret = rkmpp_write_data(avctx, avctx->extradata,
avctx->extradata_size,
avpkt->pts);
if (ret) {
av_log(avctx, AV_LOG_ERROR, "Failed to write extradata to decoder (code = %d)\n", ret);
return ret;
}
}
decoder->first_packet = 0;
}
// now send packet
ret = rkmpp_write_data(avctx, avpkt->data, avpkt->size, avpkt->pts);
if (ret && ret!=AVERROR(EAGAIN))
av_log(avctx, AV_LOG_ERROR, "Failed to write data to decoder (code = %d)\n", ret);
return ret;
}
static void rkmpp_release_frame(void *opaque, uint8_t *data)
{
AVDRMFrameDescriptor *desc = (AVDRMFrameDescriptor *)data;
AVBufferRef *framecontextref = (AVBufferRef *)opaque;
RKMPPFrameContext *framecontext = (RKMPPFrameContext *)framecontextref->data;
mpp_frame_deinit(&framecontext->frame);
av_buffer_unref(&framecontext->decoder_ref);
av_buffer_unref(&framecontextref);
av_free(desc);
}
static int rkmpp_retrieve_frame(AVCodecContext *avctx, AVFrame *frame)
{
RKMPPDecodeContext *rk_context = avctx->priv_data;
RKMPPDecoder *decoder = (RKMPPDecoder *)rk_context->decoder_ref->data;
RKMPPFrameContext *framecontext = NULL;
AVBufferRef *framecontextref = NULL;
int ret;
MppFrame mppframe = NULL;
MppBuffer buffer = NULL;
AVDRMFrameDescriptor *desc = NULL;
AVDRMLayerDescriptor *layer = NULL;
int retrycount = 0;
int mode;
MppFrameFormat mppformat;
uint32_t drmformat;
// on start of decoding, MPP can return -1, which is supposed to be expected
// this is due to some internal MPP init which is not completed, that will
// only happen in the first few frames queries, but should not be interpreted
// as an error, Therefore we need to retry a couple times when we get -1
// in order to let it time to complete it's init, then we sleep a bit between retries.
retry_get_frame:
ret = decoder->mpi->decode_get_frame(decoder->ctx, &mppframe);
if (ret != MPP_OK && ret != MPP_ERR_TIMEOUT && !decoder->first_frame) {
if (retrycount < 5) {
av_log(avctx, AV_LOG_DEBUG, "Failed to get a frame, retrying (code = %d, retrycount = %d)\n", ret, retrycount);
usleep(10000);
retrycount++;
goto retry_get_frame;
} else {
av_log(avctx, AV_LOG_ERROR, "Failed to get a frame from MPP (code = %d)\n", ret);
goto fail;
}
}
if (mppframe) {
// Check whether we have a special frame or not
if (mpp_frame_get_info_change(mppframe)) {
AVHWFramesContext *hwframes;
av_log(avctx, AV_LOG_INFO, "Decoder noticed an info change (%dx%d), format=%d\n",
(int)mpp_frame_get_width(mppframe), (int)mpp_frame_get_height(mppframe),
(int)mpp_frame_get_fmt(mppframe));
avctx->width = mpp_frame_get_width(mppframe);
avctx->height = mpp_frame_get_height(mppframe);
decoder->mpi->control(decoder->ctx, MPP_DEC_SET_INFO_CHANGE_READY, NULL);
decoder->first_frame = 1;
av_buffer_unref(&decoder->frames_ref);
decoder->frames_ref = av_hwframe_ctx_alloc(decoder->device_ref);
if (!decoder->frames_ref) {
ret = AVERROR(ENOMEM);
goto fail;
}
mppformat = mpp_frame_get_fmt(mppframe);
drmformat = rkmpp_get_frameformat(mppformat);
hwframes = (AVHWFramesContext*)decoder->frames_ref->data;
hwframes->format = AV_PIX_FMT_DRM_PRIME;
hwframes->sw_format = drmformat == DRM_FORMAT_NV12 ? AV_PIX_FMT_NV12 : AV_PIX_FMT_NONE;
hwframes->width = avctx->width;
hwframes->height = avctx->height;
ret = av_hwframe_ctx_init(decoder->frames_ref);
if (ret < 0)
goto fail;
// here decoder is fully initialized, we need to feed it again with data
ret = AVERROR(EAGAIN);
goto fail;
} else if (mpp_frame_get_eos(mppframe)) {
av_log(avctx, AV_LOG_DEBUG, "Received a EOS frame.\n");
decoder->eos_reached = 1;
ret = AVERROR_EOF;
goto fail;
} else if (mpp_frame_get_discard(mppframe)) {
av_log(avctx, AV_LOG_DEBUG, "Received a discard frame.\n");
ret = AVERROR(EAGAIN);
goto fail;
} else if (mpp_frame_get_errinfo(mppframe)) {
av_log(avctx, AV_LOG_ERROR, "Received a errinfo frame.\n");
ret = AVERROR_UNKNOWN;
goto fail;
}
// here we should have a valid frame
av_log(avctx, AV_LOG_DEBUG, "Received a frame.\n");
// setup general frame fields
frame->format = AV_PIX_FMT_DRM_PRIME;
frame->width = mpp_frame_get_width(mppframe);
frame->height = mpp_frame_get_height(mppframe);
frame->pts = mpp_frame_get_pts(mppframe);
frame->color_range = mpp_frame_get_color_range(mppframe);
frame->color_primaries = mpp_frame_get_color_primaries(mppframe);
frame->color_trc = mpp_frame_get_color_trc(mppframe);
frame->colorspace = mpp_frame_get_colorspace(mppframe);
mode = mpp_frame_get_mode(mppframe);
frame->interlaced_frame = ((mode & MPP_FRAME_FLAG_FIELD_ORDER_MASK) == MPP_FRAME_FLAG_DEINTERLACED);
frame->top_field_first = ((mode & MPP_FRAME_FLAG_FIELD_ORDER_MASK) == MPP_FRAME_FLAG_TOP_FIRST);
mppformat = mpp_frame_get_fmt(mppframe);
drmformat = rkmpp_get_frameformat(mppformat);
// now setup the frame buffer info
buffer = mpp_frame_get_buffer(mppframe);
if (buffer) {
desc = av_mallocz(sizeof(AVDRMFrameDescriptor));
if (!desc) {
ret = AVERROR(ENOMEM);
goto fail;
}
desc->nb_objects = 1;
desc->objects[0].fd = mpp_buffer_get_fd(buffer);
desc->objects[0].size = mpp_buffer_get_size(buffer);
desc->nb_layers = 1;
layer = &desc->layers[0];
layer->format = drmformat;
layer->nb_planes = 2;
layer->planes[0].object_index = 0;
layer->planes[0].offset = 0;
layer->planes[0].pitch = mpp_frame_get_hor_stride(mppframe);
layer->planes[1].object_index = 0;
layer->planes[1].offset = layer->planes[0].pitch * mpp_frame_get_ver_stride(mppframe);
layer->planes[1].pitch = layer->planes[0].pitch;
// we also allocate a struct in buf[0] that will allow to hold additionnal information
// for releasing properly MPP frames and decoder
framecontextref = av_buffer_allocz(sizeof(*framecontext));
if (!framecontextref) {
ret = AVERROR(ENOMEM);
goto fail;
}
// MPP decoder needs to be closed only when all frames have been released.
framecontext = (RKMPPFrameContext *)framecontextref->data;
framecontext->decoder_ref = av_buffer_ref(rk_context->decoder_ref);
framecontext->frame = mppframe;
frame->data[0] = (uint8_t *)desc;
frame->buf[0] = av_buffer_create((uint8_t *)desc, sizeof(*desc), rkmpp_release_frame,
framecontextref, AV_BUFFER_FLAG_READONLY);
if (!frame->buf[0]) {
ret = AVERROR(ENOMEM);
goto fail;
}
frame->hw_frames_ctx = av_buffer_ref(decoder->frames_ref);
if (!frame->hw_frames_ctx) {
ret = AVERROR(ENOMEM);
goto fail;
}
decoder->first_frame = 0;
return 0;
} else {
av_log(avctx, AV_LOG_ERROR, "Failed to retrieve the frame buffer, frame is dropped (code = %d)\n", ret);
mpp_frame_deinit(&mppframe);
}
} else if (decoder->eos_reached) {
return AVERROR_EOF;
} else if (ret == MPP_ERR_TIMEOUT) {
av_log(avctx, AV_LOG_DEBUG, "Timeout when trying to get a frame from MPP\n");
}
return AVERROR(EAGAIN);
fail:
if (mppframe)
mpp_frame_deinit(&mppframe);
if (framecontext)
av_buffer_unref(&framecontext->decoder_ref);
if (framecontextref)
av_buffer_unref(&framecontextref);
if (desc)
av_free(desc);
return ret;
}
static int rkmpp_receive_frame(AVCodecContext *avctx, AVFrame *frame)
{
RKMPPDecodeContext *rk_context = avctx->priv_data;
RKMPPDecoder *decoder = (RKMPPDecoder *)rk_context->decoder_ref->data;
int ret = MPP_NOK;
AVPacket pkt = {0};
RK_S32 freeslots;
if (!decoder->eos_reached) {
// we get the available slots in decoder
ret = decoder->mpi->control(decoder->ctx, MPP_DEC_GET_FREE_PACKET_SLOT_COUNT, &freeslots);
if (ret != MPP_OK) {
av_log(avctx, AV_LOG_ERROR, "Failed to get decoder free slots (code = %d).\n", ret);
return ret;
}
if (freeslots > 0) {
ret = ff_decode_get_packet(avctx, &pkt);
if (ret < 0 && ret != AVERROR_EOF) {
return ret;
}
ret = rkmpp_send_packet(avctx, &pkt);
av_packet_unref(&pkt);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to send packet to decoder (code = %d)\n", ret);
return ret;
}
}
// make sure we keep decoder full
if (freeslots > 1 && decoder->first_frame)
return AVERROR(EAGAIN);
}
return rkmpp_retrieve_frame(avctx, frame);
}
static void rkmpp_flush(AVCodecContext *avctx)
{
RKMPPDecodeContext *rk_context = avctx->priv_data;
RKMPPDecoder *decoder = (RKMPPDecoder *)rk_context->decoder_ref->data;
int ret = MPP_NOK;
av_log(avctx, AV_LOG_DEBUG, "Flush.\n");
ret = decoder->mpi->reset(decoder->ctx);
if (ret == MPP_OK) {
decoder->first_frame = 1;
decoder->first_packet = 1;
} else
av_log(avctx, AV_LOG_ERROR, "Failed to reset MPI (code = %d)\n", ret);
}
#define RKMPP_DEC_CLASS(NAME) \
static const AVClass rkmpp_##NAME##_dec_class = { \
.class_name = "rkmpp_" #NAME "_dec", \
.version = LIBAVUTIL_VERSION_INT, \
};
#define RKMPP_DEC(NAME, ID, BSFS) \
RKMPP_DEC_CLASS(NAME) \
AVCodec ff_##NAME##_rkmpp_decoder = { \
.name = #NAME "_rkmpp", \
.long_name = NULL_IF_CONFIG_SMALL(#NAME " (rkmpp)"), \
.type = AVMEDIA_TYPE_VIDEO, \
.id = ID, \
.priv_data_size = sizeof(RKMPPDecodeContext), \
.init = rkmpp_init_decoder, \
.close = rkmpp_close_decoder, \
.receive_frame = rkmpp_receive_frame, \
.flush = rkmpp_flush, \
.priv_class = &rkmpp_##NAME##_dec_class, \
.capabilities = AV_CODEC_CAP_DELAY, \
.caps_internal = AV_CODEC_CAP_AVOID_PROBING, \
.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_DRM_PRIME, \
AV_PIX_FMT_NONE}, \
.bsfs = BSFS, \
};
RKMPP_DEC(h264, AV_CODEC_ID_H264, "h264_mp4toannexb")
RKMPP_DEC(hevc, AV_CODEC_ID_HEVC, "hevc_mp4toannexb")
RKMPP_DEC(vp8, AV_CODEC_ID_VP8, NULL)
RKMPP_DEC(vp9, AV_CODEC_ID_VP9, NULL)
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