libavcodec/qsvdec_other.c - third_party/ffmpeg - Git at Google

 /*
  * Intel MediaSDK QSV based MPEG-2, VC-1 and VP8 decoders
  *
  * copyright (c) 2015 Anton Khirnov
  *
  * 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 <mfx/mfxvideo.h>

 #include "libavutil/common.h"
 #include "libavutil/fifo.h"
 #include "libavutil/opt.h"

 #include "avcodec.h"
 #include "internal.h"
 #include "qsv_internal.h"
 #include "qsvdec.h"
 #include "qsv.h"

 typedef struct QSVOtherContext {
     AVClass *class;
     QSVContext qsv;

     AVFifoBuffer *packet_fifo;

     AVPacket input_ref;
 } QSVOtherContext;

 static void qsv_clear_buffers(QSVOtherContext *s)
 {
     AVPacket pkt;
     while (av_fifo_size(s->packet_fifo) >= sizeof(pkt)) {
         av_fifo_generic_read(s->packet_fifo, &pkt, sizeof(pkt), NULL);
         av_packet_unref(&pkt);
     }

     av_packet_unref(&s->input_ref);
 }

 static av_cold int qsv_decode_close(AVCodecContext *avctx)
 {
     QSVOtherContext *s = avctx->priv_data;

 #if CONFIG_VP8_QSV_DECODER
     if (avctx->codec_id == AV_CODEC_ID_VP8)
         av_freep(&s->qsv.load_plugins);
 #endif

     ff_qsv_decode_close(&s->qsv);

     qsv_clear_buffers(s);

     av_fifo_free(s->packet_fifo);

     return 0;
 }

 static av_cold int qsv_decode_init(AVCodecContext *avctx)
 {
     QSVOtherContext *s = avctx->priv_data;
     int ret;

 #if CONFIG_VP8_QSV_DECODER
     if (avctx->codec_id == AV_CODEC_ID_VP8) {
         static const char *uid_vp8dec_hw = "f622394d8d87452f878c51f2fc9b4131";

         av_freep(&s->qsv.load_plugins);
         s->qsv.load_plugins = av_strdup(uid_vp8dec_hw);
         if (!s->qsv.load_plugins)
             return AVERROR(ENOMEM);
     }
 #endif

     s->packet_fifo = av_fifo_alloc(sizeof(AVPacket));
     if (!s->packet_fifo) {
         ret = AVERROR(ENOMEM);
         goto fail;
     }

     return 0;
 fail:
     qsv_decode_close(avctx);
     return ret;
 }

 static int qsv_decode_frame(AVCodecContext *avctx, void *data,
                             int *got_frame, AVPacket *avpkt)
 {
     QSVOtherContext *s = avctx->priv_data;
     AVFrame *frame    = data;
     int ret;

     /* buffer the input packet */
     if (avpkt->size) {
         AVPacket input_ref = { 0 };

         if (av_fifo_space(s->packet_fifo) < sizeof(input_ref)) {
             ret = av_fifo_realloc2(s->packet_fifo,
                                    av_fifo_size(s->packet_fifo) + sizeof(input_ref));
             if (ret < 0)
                 return ret;
         }

         ret = av_packet_ref(&input_ref, avpkt);
         if (ret < 0)
             return ret;
         av_fifo_generic_write(s->packet_fifo, &input_ref, sizeof(input_ref), NULL);
     }

     /* process buffered data */
     while (!*got_frame) {
         if (s->input_ref.size <= 0) {
             /* no more data */
             if (av_fifo_size(s->packet_fifo) < sizeof(AVPacket))
                 return avpkt->size ? avpkt->size : ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, avpkt);

             av_packet_unref(&s->input_ref);
             av_fifo_generic_read(s->packet_fifo, &s->input_ref, sizeof(s->input_ref), NULL);
         }

         ret = ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, &s->input_ref);
         if (ret < 0) {
             /* Drop input packet when failed to decode the packet. Otherwise,
                the decoder will keep decoding the failure packet. */
             av_packet_unref(&s->input_ref);

             return ret;
         }

         s->input_ref.size -= ret;
         s->input_ref.data += ret;
     }

     return avpkt->size;
 }

 static void qsv_decode_flush(AVCodecContext *avctx)
 {
     QSVOtherContext *s = avctx->priv_data;

     qsv_clear_buffers(s);
     ff_qsv_decode_flush(avctx, &s->qsv);
 }

 #define OFFSET(x) offsetof(QSVOtherContext, x)
 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
 static const AVOption options[] = {
     { "async_depth", "Internal parallelization depth, the higher the value the higher the latency.", OFFSET(qsv.async_depth), AV_OPT_TYPE_INT, { .i64 = ASYNC_DEPTH_DEFAULT }, 1, INT_MAX, VD },
     { NULL },
 };

 #if CONFIG_MPEG2_QSV_DECODER
 static const AVClass mpeg2_qsv_class = {
     .class_name = "mpeg2_qsv",
     .item_name  = av_default_item_name,
     .option     = options,
     .version    = LIBAVUTIL_VERSION_INT,
 };

 AVCodec ff_mpeg2_qsv_decoder = {
     .name           = "mpeg2_qsv",
     .long_name      = NULL_IF_CONFIG_SMALL("MPEG-2 video (Intel Quick Sync Video acceleration)"),
     .priv_data_size = sizeof(QSVOtherContext),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_MPEG2VIDEO,
     .init           = qsv_decode_init,
     .decode         = qsv_decode_frame,
     .flush          = qsv_decode_flush,
     .close          = qsv_decode_close,
     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HYBRID,
     .priv_class     = &mpeg2_qsv_class,
     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
                                                     AV_PIX_FMT_QSV,
                                                     AV_PIX_FMT_NONE },
     .hw_configs     = ff_qsv_hw_configs,
     .wrapper_name   = "qsv",
 };
 #endif

 #if CONFIG_VC1_QSV_DECODER
 static const AVClass vc1_qsv_class = {
     .class_name = "vc1_qsv",
     .item_name  = av_default_item_name,
     .option     = options,
     .version    = LIBAVUTIL_VERSION_INT,
 };

 AVCodec ff_vc1_qsv_decoder = {
     .name           = "vc1_qsv",
     .long_name      = NULL_IF_CONFIG_SMALL("VC-1 video (Intel Quick Sync Video acceleration)"),
     .priv_data_size = sizeof(QSVOtherContext),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_VC1,
     .init           = qsv_decode_init,
     .decode         = qsv_decode_frame,
     .flush          = qsv_decode_flush,
     .close          = qsv_decode_close,
     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HYBRID,
     .priv_class     = &vc1_qsv_class,
     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
                                                     AV_PIX_FMT_QSV,
                                                     AV_PIX_FMT_NONE },
     .hw_configs     = ff_qsv_hw_configs,
     .wrapper_name   = "qsv",
 };
 #endif

 #if CONFIG_VP8_QSV_DECODER
 static const AVClass vp8_qsv_class = {
     .class_name = "vp8_qsv",
     .item_name  = av_default_item_name,
     .option     = options,
     .version    = LIBAVUTIL_VERSION_INT,
 };

 AVCodec ff_vp8_qsv_decoder = {
     .name           = "vp8_qsv",
     .long_name      = NULL_IF_CONFIG_SMALL("VP8 video (Intel Quick Sync Video acceleration)"),
     .priv_data_size = sizeof(QSVOtherContext),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_VP8,
     .init           = qsv_decode_init,
     .decode         = qsv_decode_frame,
     .flush          = qsv_decode_flush,
     .close          = qsv_decode_close,
     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HYBRID,
     .priv_class     = &vp8_qsv_class,
     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
                                                     AV_PIX_FMT_QSV,
                                                     AV_PIX_FMT_NONE },
     .hw_configs     = ff_qsv_hw_configs,
     .wrapper_name   = "qsv",
 };
 #endif
	/*
	* Intel MediaSDK QSV based MPEG-2, VC-1 and VP8 decoders
	*
	* copyright (c) 2015 Anton Khirnov
	*
	* 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 <mfx/mfxvideo.h>

	#include "libavutil/common.h"
	#include "libavutil/fifo.h"
	#include "libavutil/opt.h"

	#include "avcodec.h"
	#include "internal.h"
	#include "qsv_internal.h"
	#include "qsvdec.h"
	#include "qsv.h"

	typedef struct QSVOtherContext {
	AVClass *class;
	QSVContext qsv;

	AVFifoBuffer *packet_fifo;

	AVPacket input_ref;
	} QSVOtherContext;

	static void qsv_clear_buffers(QSVOtherContext *s)
	{
	AVPacket pkt;
	while (av_fifo_size(s->packet_fifo) >= sizeof(pkt)) {
	av_fifo_generic_read(s->packet_fifo, &pkt, sizeof(pkt), NULL);
	av_packet_unref(&pkt);
	}

	av_packet_unref(&s->input_ref);
	}

	static av_cold int qsv_decode_close(AVCodecContext *avctx)
	{
	QSVOtherContext *s = avctx->priv_data;

	#if CONFIG_VP8_QSV_DECODER
	if (avctx->codec_id == AV_CODEC_ID_VP8)
	av_freep(&s->qsv.load_plugins);
	#endif

	ff_qsv_decode_close(&s->qsv);

	qsv_clear_buffers(s);

	av_fifo_free(s->packet_fifo);

	return 0;
	}

	static av_cold int qsv_decode_init(AVCodecContext *avctx)
	{
	QSVOtherContext *s = avctx->priv_data;
	int ret;

	#if CONFIG_VP8_QSV_DECODER
	if (avctx->codec_id == AV_CODEC_ID_VP8) {
	static const char *uid_vp8dec_hw = "f622394d8d87452f878c51f2fc9b4131";

	av_freep(&s->qsv.load_plugins);
	s->qsv.load_plugins = av_strdup(uid_vp8dec_hw);
	if (!s->qsv.load_plugins)
	return AVERROR(ENOMEM);
	}
	#endif

	s->packet_fifo = av_fifo_alloc(sizeof(AVPacket));
	if (!s->packet_fifo) {
	ret = AVERROR(ENOMEM);
	goto fail;
	}

	return 0;
	fail:
	qsv_decode_close(avctx);
	return ret;
	}

	static int qsv_decode_frame(AVCodecContext avctx, void data,
	int got_frame, AVPacket avpkt)
	{
	QSVOtherContext *s = avctx->priv_data;
	AVFrame *frame = data;
	int ret;

	/* buffer the input packet */
	if (avpkt->size) {
	AVPacket input_ref = { 0 };

	if (av_fifo_space(s->packet_fifo) < sizeof(input_ref)) {
	ret = av_fifo_realloc2(s->packet_fifo,
	av_fifo_size(s->packet_fifo) + sizeof(input_ref));
	if (ret < 0)
	return ret;
	}

	ret = av_packet_ref(&input_ref, avpkt);
	if (ret < 0)
	return ret;
	av_fifo_generic_write(s->packet_fifo, &input_ref, sizeof(input_ref), NULL);
	}

	/* process buffered data */
	while (!*got_frame) {
	if (s->input_ref.size <= 0) {
	/* no more data */
	if (av_fifo_size(s->packet_fifo) < sizeof(AVPacket))
	return avpkt->size ? avpkt->size : ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, avpkt);

	av_packet_unref(&s->input_ref);
	av_fifo_generic_read(s->packet_fifo, &s->input_ref, sizeof(s->input_ref), NULL);
	}

	ret = ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, &s->input_ref);
	if (ret < 0) {
	/* Drop input packet when failed to decode the packet. Otherwise,
	the decoder will keep decoding the failure packet. */
	av_packet_unref(&s->input_ref);

	return ret;
	}

	s->input_ref.size -= ret;
	s->input_ref.data += ret;
	}

	return avpkt->size;
	}

	static void qsv_decode_flush(AVCodecContext *avctx)
	{
	QSVOtherContext *s = avctx->priv_data;

	qsv_clear_buffers(s);
	ff_qsv_decode_flush(avctx, &s->qsv);
	}

	#define OFFSET(x) offsetof(QSVOtherContext, x)
	#define VD AV_OPT_FLAG_VIDEO_PARAM \| AV_OPT_FLAG_DECODING_PARAM
	static const AVOption options[] = {
	{ "async_depth", "Internal parallelization depth, the higher the value the higher the latency.", OFFSET(qsv.async_depth), AV_OPT_TYPE_INT, { .i64 = ASYNC_DEPTH_DEFAULT }, 1, INT_MAX, VD },
	{ NULL },
	};

	#if CONFIG_MPEG2_QSV_DECODER
	static const AVClass mpeg2_qsv_class = {
	.class_name = "mpeg2_qsv",
	.item_name = av_default_item_name,
	.option = options,
	.version = LIBAVUTIL_VERSION_INT,
	};

	AVCodec ff_mpeg2_qsv_decoder = {
	.name = "mpeg2_qsv",
	.long_name = NULL_IF_CONFIG_SMALL("MPEG-2 video (Intel Quick Sync Video acceleration)"),
	.priv_data_size = sizeof(QSVOtherContext),
	.type = AVMEDIA_TYPE_VIDEO,
	.id = AV_CODEC_ID_MPEG2VIDEO,
	.init = qsv_decode_init,
	.decode = qsv_decode_frame,
	.flush = qsv_decode_flush,
	.close = qsv_decode_close,
	.capabilities = AV_CODEC_CAP_DELAY \| AV_CODEC_CAP_DR1 \| AV_CODEC_CAP_AVOID_PROBING \| AV_CODEC_CAP_HYBRID,
	.priv_class = &mpeg2_qsv_class,
	.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
	AV_PIX_FMT_QSV,
	AV_PIX_FMT_NONE },
	.hw_configs = ff_qsv_hw_configs,
	.wrapper_name = "qsv",
	};
	#endif

	#if CONFIG_VC1_QSV_DECODER
	static const AVClass vc1_qsv_class = {
	.class_name = "vc1_qsv",
	.item_name = av_default_item_name,
	.option = options,
	.version = LIBAVUTIL_VERSION_INT,
	};

	AVCodec ff_vc1_qsv_decoder = {
	.name = "vc1_qsv",
	.long_name = NULL_IF_CONFIG_SMALL("VC-1 video (Intel Quick Sync Video acceleration)"),
	.priv_data_size = sizeof(QSVOtherContext),
	.type = AVMEDIA_TYPE_VIDEO,
	.id = AV_CODEC_ID_VC1,
	.init = qsv_decode_init,
	.decode = qsv_decode_frame,
	.flush = qsv_decode_flush,
	.close = qsv_decode_close,
	.capabilities = AV_CODEC_CAP_DELAY \| AV_CODEC_CAP_DR1 \| AV_CODEC_CAP_AVOID_PROBING \| AV_CODEC_CAP_HYBRID,
	.priv_class = &vc1_qsv_class,
	.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
	AV_PIX_FMT_QSV,
	AV_PIX_FMT_NONE },
	.hw_configs = ff_qsv_hw_configs,
	.wrapper_name = "qsv",
	};
	#endif

	#if CONFIG_VP8_QSV_DECODER
	static const AVClass vp8_qsv_class = {
	.class_name = "vp8_qsv",
	.item_name = av_default_item_name,
	.option = options,
	.version = LIBAVUTIL_VERSION_INT,
	};

	AVCodec ff_vp8_qsv_decoder = {
	.name = "vp8_qsv",
	.long_name = NULL_IF_CONFIG_SMALL("VP8 video (Intel Quick Sync Video acceleration)"),
	.priv_data_size = sizeof(QSVOtherContext),
	.type = AVMEDIA_TYPE_VIDEO,
	.id = AV_CODEC_ID_VP8,
	.init = qsv_decode_init,
	.decode = qsv_decode_frame,
	.flush = qsv_decode_flush,
	.close = qsv_decode_close,
	.capabilities = AV_CODEC_CAP_DELAY \| AV_CODEC_CAP_DR1 \| AV_CODEC_CAP_AVOID_PROBING \| AV_CODEC_CAP_HYBRID,
	.priv_class = &vp8_qsv_class,
	.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
	AV_PIX_FMT_QSV,
	AV_PIX_FMT_NONE },
	.hw_configs = ff_qsv_hw_configs,
	.wrapper_name = "qsv",
	};
	#endif