libavcodec/qsvdec_h2645.c - third_party/ffmpeg - Git at Google

 /*
  * Intel MediaSDK QSV based H.264 / HEVC decoder
  *
  * copyright (c) 2013 Luca Barbato
  * 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"

 enum LoadPlugin {
     LOAD_PLUGIN_NONE,
     LOAD_PLUGIN_HEVC_SW,
     LOAD_PLUGIN_HEVC_HW,
 };

 typedef struct QSVH2645Context {
     AVClass *class;
     QSVContext qsv;

     int load_plugin;

     AVFifoBuffer *packet_fifo;

     AVPacket buffer_pkt;
 } QSVH2645Context;

 static void qsv_clear_buffers(QSVH2645Context *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->buffer_pkt);
 }

 static av_cold int qsv_decode_close(AVCodecContext *avctx)
 {
     QSVH2645Context *s = avctx->priv_data;

     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)
 {
     QSVH2645Context *s = avctx->priv_data;
     int ret;

     if (avctx->codec_id == AV_CODEC_ID_HEVC && s->load_plugin != LOAD_PLUGIN_NONE) {
         static const char * const uid_hevcdec_sw = "15dd936825ad475ea34e35f3f54217a6";
         static const char * const uid_hevcdec_hw = "33a61c0b4c27454ca8d85dde757c6f8e";

         if (s->qsv.load_plugins[0]) {
             av_log(avctx, AV_LOG_WARNING,
                    "load_plugins is not empty, but load_plugin is not set to 'none'."
                    "The load_plugin value will be ignored.\n");
         } else {
             av_freep(&s->qsv.load_plugins);

             if (s->load_plugin == LOAD_PLUGIN_HEVC_SW)
                 s->qsv.load_plugins = av_strdup(uid_hevcdec_sw);
             else
                 s->qsv.load_plugins = av_strdup(uid_hevcdec_hw);
             if (!s->qsv.load_plugins)
                 return AVERROR(ENOMEM);
         }
     }

     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)
 {
     QSVH2645Context *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) {
         /* prepare the input data */
         if (s->buffer_pkt.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->buffer_pkt);

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

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

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

     return avpkt->size;
 }

 static void qsv_decode_flush(AVCodecContext *avctx)
 {
     QSVH2645Context *s = avctx->priv_data;

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

 #if defined(_WIN32)
 #define LOAD_PLUGIN_DEFAULT LOAD_PLUGIN_HEVC_SW
 #else
 #define LOAD_PLUGIN_DEFAULT LOAD_PLUGIN_HEVC_HW
 #endif

 #define OFFSET(x) offsetof(QSVH2645Context, x)
 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

 #if CONFIG_HEVC_QSV_DECODER
 static const AVOption hevc_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 },

     { "load_plugin", "A user plugin to load in an internal session", OFFSET(load_plugin), AV_OPT_TYPE_INT, { .i64 = LOAD_PLUGIN_DEFAULT }, LOAD_PLUGIN_NONE, LOAD_PLUGIN_HEVC_HW, VD, "load_plugin" },
     { "none",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_NONE },    0, 0, VD, "load_plugin" },
     { "hevc_sw",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_SW }, 0, 0, VD, "load_plugin" },
     { "hevc_hw",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_HW }, 0, 0, VD, "load_plugin" },

     { "load_plugins", "A :-separate list of hexadecimal plugin UIDs to load in an internal session",
         OFFSET(qsv.load_plugins), AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VD },
     { NULL },
 };

 static const AVClass hevc_class = {
     .class_name = "hevc_qsv",
     .item_name  = av_default_item_name,
     .option     = hevc_options,
     .version    = LIBAVUTIL_VERSION_INT,
 };

 AVCodec ff_hevc_qsv_decoder = {
     .name           = "hevc_qsv",
     .long_name      = NULL_IF_CONFIG_SMALL("HEVC (Intel Quick Sync Video acceleration)"),
     .priv_data_size = sizeof(QSVH2645Context),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_HEVC,
     .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     = &hevc_class,
     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
                                                     AV_PIX_FMT_P010,
                                                     AV_PIX_FMT_QSV,
                                                     AV_PIX_FMT_NONE },
     .hw_configs     = ff_qsv_hw_configs,
     .bsfs           = "hevc_mp4toannexb",
     .wrapper_name   = "qsv",
 };
 #endif

 #if CONFIG_H264_QSV_DECODER
 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 },
 };

 static const AVClass class = {
     .class_name = "h264_qsv",
     .item_name  = av_default_item_name,
     .option     = options,
     .version    = LIBAVUTIL_VERSION_INT,
 };

 AVCodec ff_h264_qsv_decoder = {
     .name           = "h264_qsv",
     .long_name      = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (Intel Quick Sync Video acceleration)"),
     .priv_data_size = sizeof(QSVH2645Context),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_H264,
     .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     = &class,
     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
                                                     AV_PIX_FMT_P010,
                                                     AV_PIX_FMT_QSV,
                                                     AV_PIX_FMT_NONE },
     .hw_configs     = ff_qsv_hw_configs,
     .bsfs           = "h264_mp4toannexb",
     .wrapper_name   = "qsv",
 };
 #endif
	/*
	* Intel MediaSDK QSV based H.264 / HEVC decoder
	*
	* copyright (c) 2013 Luca Barbato
	* 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"

	enum LoadPlugin {
	LOAD_PLUGIN_NONE,
	LOAD_PLUGIN_HEVC_SW,
	LOAD_PLUGIN_HEVC_HW,
	};

	typedef struct QSVH2645Context {
	AVClass *class;
	QSVContext qsv;

	int load_plugin;

	AVFifoBuffer *packet_fifo;

	AVPacket buffer_pkt;
	} QSVH2645Context;

	static void qsv_clear_buffers(QSVH2645Context *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->buffer_pkt);
	}

	static av_cold int qsv_decode_close(AVCodecContext *avctx)
	{
	QSVH2645Context *s = avctx->priv_data;

	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)
	{
	QSVH2645Context *s = avctx->priv_data;
	int ret;

	if (avctx->codec_id == AV_CODEC_ID_HEVC && s->load_plugin != LOAD_PLUGIN_NONE) {
	static const char * const uid_hevcdec_sw = "15dd936825ad475ea34e35f3f54217a6";
	static const char * const uid_hevcdec_hw = "33a61c0b4c27454ca8d85dde757c6f8e";

	if (s->qsv.load_plugins[0]) {
	av_log(avctx, AV_LOG_WARNING,
	"load_plugins is not empty, but load_plugin is not set to 'none'."
	"The load_plugin value will be ignored.\n");
	} else {
	av_freep(&s->qsv.load_plugins);

	if (s->load_plugin == LOAD_PLUGIN_HEVC_SW)
	s->qsv.load_plugins = av_strdup(uid_hevcdec_sw);
	else
	s->qsv.load_plugins = av_strdup(uid_hevcdec_hw);
	if (!s->qsv.load_plugins)
	return AVERROR(ENOMEM);
	}
	}

	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)
	{
	QSVH2645Context *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) {
	/* prepare the input data */
	if (s->buffer_pkt.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->buffer_pkt);

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

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

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

	return avpkt->size;
	}

	static void qsv_decode_flush(AVCodecContext *avctx)
	{
	QSVH2645Context *s = avctx->priv_data;

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

	#if defined(_WIN32)
	#define LOAD_PLUGIN_DEFAULT LOAD_PLUGIN_HEVC_SW
	#else
	#define LOAD_PLUGIN_DEFAULT LOAD_PLUGIN_HEVC_HW
	#endif

	#define OFFSET(x) offsetof(QSVH2645Context, x)
	#define VD AV_OPT_FLAG_VIDEO_PARAM \| AV_OPT_FLAG_DECODING_PARAM

	#if CONFIG_HEVC_QSV_DECODER
	static const AVOption hevc_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 },

	{ "load_plugin", "A user plugin to load in an internal session", OFFSET(load_plugin), AV_OPT_TYPE_INT, { .i64 = LOAD_PLUGIN_DEFAULT }, LOAD_PLUGIN_NONE, LOAD_PLUGIN_HEVC_HW, VD, "load_plugin" },
	{ "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_NONE }, 0, 0, VD, "load_plugin" },
	{ "hevc_sw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_SW }, 0, 0, VD, "load_plugin" },
	{ "hevc_hw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_HW }, 0, 0, VD, "load_plugin" },

	{ "load_plugins", "A :-separate list of hexadecimal plugin UIDs to load in an internal session",
	OFFSET(qsv.load_plugins), AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VD },
	{ NULL },
	};

	static const AVClass hevc_class = {
	.class_name = "hevc_qsv",
	.item_name = av_default_item_name,
	.option = hevc_options,
	.version = LIBAVUTIL_VERSION_INT,
	};

	AVCodec ff_hevc_qsv_decoder = {
	.name = "hevc_qsv",
	.long_name = NULL_IF_CONFIG_SMALL("HEVC (Intel Quick Sync Video acceleration)"),
	.priv_data_size = sizeof(QSVH2645Context),
	.type = AVMEDIA_TYPE_VIDEO,
	.id = AV_CODEC_ID_HEVC,
	.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 = &hevc_class,
	.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
	AV_PIX_FMT_P010,
	AV_PIX_FMT_QSV,
	AV_PIX_FMT_NONE },
	.hw_configs = ff_qsv_hw_configs,
	.bsfs = "hevc_mp4toannexb",
	.wrapper_name = "qsv",
	};
	#endif

	#if CONFIG_H264_QSV_DECODER
	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 },
	};

	static const AVClass class = {
	.class_name = "h264_qsv",
	.item_name = av_default_item_name,
	.option = options,
	.version = LIBAVUTIL_VERSION_INT,
	};

	AVCodec ff_h264_qsv_decoder = {
	.name = "h264_qsv",
	.long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (Intel Quick Sync Video acceleration)"),
	.priv_data_size = sizeof(QSVH2645Context),
	.type = AVMEDIA_TYPE_VIDEO,
	.id = AV_CODEC_ID_H264,
	.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 = &class,
	.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
	AV_PIX_FMT_P010,
	AV_PIX_FMT_QSV,
	AV_PIX_FMT_NONE },
	.hw_configs = ff_qsv_hw_configs,
	.bsfs = "h264_mp4toannexb",
	.wrapper_name = "qsv",
	};
	#endif