400 lines
10 KiB
C
400 lines
10 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include "buffer.h"
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#include "common.h"
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#include "hwcontext.h"
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#include "hwcontext_internal.h"
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#include "imgutils.h"
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#include "log.h"
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#include "mem.h"
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#include "pixdesc.h"
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#include "pixfmt.h"
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static const HWContextType *hw_table[] = {
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#if CONFIG_VDPAU
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&ff_hwcontext_type_vdpau,
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#endif
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NULL,
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};
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static const AVClass hwdevice_ctx_class = {
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.class_name = "AVHWDeviceContext",
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.item_name = av_default_item_name,
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.version = LIBAVUTIL_VERSION_INT,
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};
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static void hwdevice_ctx_free(void *opaque, uint8_t *data)
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{
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AVHWDeviceContext *ctx = (AVHWDeviceContext*)data;
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/* uninit might still want access the hw context and the user
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* free() callback might destroy it, so uninit has to be called first */
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if (ctx->internal->hw_type->device_uninit)
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ctx->internal->hw_type->device_uninit(ctx);
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if (ctx->free)
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ctx->free(ctx);
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av_freep(&ctx->hwctx);
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av_freep(&ctx->internal->priv);
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av_freep(&ctx->internal);
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av_freep(&ctx);
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}
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AVBufferRef *av_hwdevice_ctx_alloc(enum AVHWDeviceType type)
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{
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AVHWDeviceContext *ctx;
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AVBufferRef *buf;
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const HWContextType *hw_type = NULL;
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int i;
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for (i = 0; hw_table[i]; i++) {
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if (hw_table[i]->type == type) {
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hw_type = hw_table[i];
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break;
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}
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}
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if (!hw_type)
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return NULL;
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ctx = av_mallocz(sizeof(*ctx));
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if (!ctx)
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return NULL;
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ctx->internal = av_mallocz(sizeof(*ctx->internal));
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if (!ctx->internal)
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goto fail;
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if (hw_type->device_priv_size) {
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ctx->internal->priv = av_mallocz(hw_type->device_priv_size);
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if (!ctx->internal->priv)
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goto fail;
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}
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if (hw_type->device_hwctx_size) {
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ctx->hwctx = av_mallocz(hw_type->device_hwctx_size);
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if (!ctx->hwctx)
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goto fail;
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}
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buf = av_buffer_create((uint8_t*)ctx, sizeof(*ctx),
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hwdevice_ctx_free, NULL,
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AV_BUFFER_FLAG_READONLY);
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if (!buf)
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goto fail;
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ctx->type = type;
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ctx->av_class = &hwdevice_ctx_class;
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ctx->internal->hw_type = hw_type;
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return buf;
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fail:
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if (ctx->internal)
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av_freep(&ctx->internal->priv);
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av_freep(&ctx->internal);
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av_freep(&ctx->hwctx);
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av_freep(&ctx);
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return NULL;
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}
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int av_hwdevice_ctx_init(AVBufferRef *ref)
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{
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AVHWDeviceContext *ctx = (AVHWDeviceContext*)ref->data;
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int ret;
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if (ctx->internal->hw_type->device_init) {
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ret = ctx->internal->hw_type->device_init(ctx);
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if (ret < 0)
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goto fail;
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}
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return 0;
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fail:
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if (ctx->internal->hw_type->device_uninit)
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ctx->internal->hw_type->device_uninit(ctx);
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return ret;
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}
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static const AVClass hwframe_ctx_class = {
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.class_name = "AVHWFramesContext",
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.item_name = av_default_item_name,
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.version = LIBAVUTIL_VERSION_INT,
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};
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static void hwframe_ctx_free(void *opaque, uint8_t *data)
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{
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AVHWFramesContext *ctx = (AVHWFramesContext*)data;
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if (ctx->internal->pool_internal)
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av_buffer_pool_uninit(&ctx->internal->pool_internal);
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if (ctx->internal->hw_type->frames_uninit)
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ctx->internal->hw_type->frames_uninit(ctx);
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if (ctx->free)
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ctx->free(ctx);
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av_buffer_unref(&ctx->device_ref);
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av_freep(&ctx->hwctx);
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av_freep(&ctx->internal->priv);
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av_freep(&ctx->internal);
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av_freep(&ctx);
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}
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AVBufferRef *av_hwframe_ctx_alloc(AVBufferRef *device_ref_in)
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{
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AVHWDeviceContext *device_ctx = (AVHWDeviceContext*)device_ref_in->data;
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const HWContextType *hw_type = device_ctx->internal->hw_type;
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AVHWFramesContext *ctx;
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AVBufferRef *buf, *device_ref = NULL;;
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ctx = av_mallocz(sizeof(*ctx));
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if (!ctx)
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return NULL;
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ctx->internal = av_mallocz(sizeof(*ctx->internal));
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if (!ctx->internal)
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goto fail;
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if (hw_type->frames_priv_size) {
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ctx->internal->priv = av_mallocz(hw_type->frames_priv_size);
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if (!ctx->internal->priv)
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goto fail;
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}
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if (hw_type->frames_hwctx_size) {
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ctx->hwctx = av_mallocz(hw_type->frames_hwctx_size);
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if (!ctx->hwctx)
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goto fail;
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}
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device_ref = av_buffer_ref(device_ref_in);
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if (!device_ref)
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goto fail;
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buf = av_buffer_create((uint8_t*)ctx, sizeof(*ctx),
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hwframe_ctx_free, NULL,
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AV_BUFFER_FLAG_READONLY);
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if (!buf)
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goto fail;
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ctx->av_class = &hwframe_ctx_class;
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ctx->device_ref = device_ref;
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ctx->device_ctx = device_ctx;
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ctx->format = AV_PIX_FMT_NONE;
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ctx->internal->hw_type = hw_type;
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return buf;
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fail:
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if (device_ref)
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av_buffer_unref(&device_ref);
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if (ctx->internal)
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av_freep(&ctx->internal->priv);
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av_freep(&ctx->internal);
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av_freep(&ctx->hwctx);
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av_freep(&ctx);
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return NULL;
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}
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static int hwframe_pool_prealloc(AVBufferRef *ref)
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{
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AVHWFramesContext *ctx = (AVHWFramesContext*)ref->data;
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AVFrame **frames;
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int i, ret = 0;
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frames = av_mallocz_array(ctx->initial_pool_size, sizeof(*frames));
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if (!frames)
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return AVERROR(ENOMEM);
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for (i = 0; i < ctx->initial_pool_size; i++) {
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frames[i] = av_frame_alloc();
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if (!frames[i])
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goto fail;
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ret = av_hwframe_get_buffer(ref, frames[i], 0);
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if (ret < 0)
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goto fail;
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}
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fail:
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for (i = 0; i < ctx->initial_pool_size; i++)
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av_frame_free(&frames[i]);
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av_freep(&frames);
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return ret;
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}
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int av_hwframe_ctx_init(AVBufferRef *ref)
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{
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AVHWFramesContext *ctx = (AVHWFramesContext*)ref->data;
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const enum AVPixelFormat *pix_fmt;
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int ret;
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/* validate the pixel format */
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for (pix_fmt = ctx->internal->hw_type->pix_fmts; *pix_fmt != AV_PIX_FMT_NONE; pix_fmt++) {
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if (*pix_fmt == ctx->format)
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break;
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}
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if (*pix_fmt == AV_PIX_FMT_NONE) {
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av_log(ctx, AV_LOG_ERROR,
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"The hardware pixel format '%s' is not supported by the device type '%s'\n",
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av_get_pix_fmt_name(ctx->format), ctx->internal->hw_type->name);
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return AVERROR(ENOSYS);
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}
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/* validate the dimensions */
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ret = av_image_check_size(ctx->width, ctx->height, 0, ctx);
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if (ret < 0)
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return ret;
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/* format-specific init */
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if (ctx->internal->hw_type->frames_init) {
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ret = ctx->internal->hw_type->frames_init(ctx);
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if (ret < 0)
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goto fail;
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}
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if (ctx->internal->pool_internal && !ctx->pool)
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ctx->pool = ctx->internal->pool_internal;
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/* preallocate the frames in the pool, if requested */
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if (ctx->initial_pool_size > 0) {
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ret = hwframe_pool_prealloc(ref);
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if (ret < 0)
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goto fail;
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}
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return 0;
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fail:
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if (ctx->internal->hw_type->frames_uninit)
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ctx->internal->hw_type->frames_uninit(ctx);
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return ret;
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}
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int av_hwframe_transfer_get_formats(AVBufferRef *hwframe_ref,
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enum AVHWFrameTransferDirection dir,
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enum AVPixelFormat **formats, int flags)
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{
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AVHWFramesContext *ctx = (AVHWFramesContext*)hwframe_ref->data;
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if (!ctx->internal->hw_type->transfer_get_formats)
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return AVERROR(ENOSYS);
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return ctx->internal->hw_type->transfer_get_formats(ctx, dir, formats);
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}
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static int transfer_data_alloc(AVFrame *dst, const AVFrame *src, int flags)
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{
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AVFrame *frame_tmp;
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int ret = 0;
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frame_tmp = av_frame_alloc();
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if (!frame_tmp)
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return AVERROR(ENOMEM);
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/* if the format is set, use that
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* otherwise pick the first supported one */
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if (dst->format >= 0) {
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frame_tmp->format = dst->format;
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} else {
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enum AVPixelFormat *formats;
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ret = av_hwframe_transfer_get_formats(src->hw_frames_ctx,
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AV_HWFRAME_TRANSFER_DIRECTION_FROM,
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&formats, 0);
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if (ret < 0)
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goto fail;
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frame_tmp->format = formats[0];
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av_freep(&formats);
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}
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frame_tmp->width = src->width;
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frame_tmp->height = src->height;
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ret = av_frame_get_buffer(frame_tmp, 32);
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if (ret < 0)
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goto fail;
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ret = av_hwframe_transfer_data(frame_tmp, src, flags);
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if (ret < 0)
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goto fail;
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av_frame_move_ref(dst, frame_tmp);
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fail:
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av_frame_free(&frame_tmp);
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return ret;
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}
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int av_hwframe_transfer_data(AVFrame *dst, const AVFrame *src, int flags)
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{
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AVHWFramesContext *ctx;
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int ret;
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if (!dst->buf[0])
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return transfer_data_alloc(dst, src, flags);
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if (src->hw_frames_ctx) {
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ctx = (AVHWFramesContext*)src->hw_frames_ctx->data;
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ret = ctx->internal->hw_type->transfer_data_from(ctx, dst, src);
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if (ret < 0)
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return ret;
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} else if (dst->hw_frames_ctx) {
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ctx = (AVHWFramesContext*)dst->hw_frames_ctx->data;
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ret = ctx->internal->hw_type->transfer_data_to(ctx, dst, src);
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if (ret < 0)
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return ret;
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} else
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return AVERROR(ENOSYS);
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return 0;
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}
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int av_hwframe_get_buffer(AVBufferRef *hwframe_ref, AVFrame *frame, int flags)
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{
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AVHWFramesContext *ctx = (AVHWFramesContext*)hwframe_ref->data;
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int ret;
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if (!ctx->internal->hw_type->frames_get_buffer)
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return AVERROR(ENOSYS);
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if (!ctx->pool)
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return AVERROR(EINVAL);
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frame->hw_frames_ctx = av_buffer_ref(hwframe_ref);
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if (!frame->hw_frames_ctx)
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return AVERROR(ENOMEM);
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ret = ctx->internal->hw_type->frames_get_buffer(ctx, frame);
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if (ret < 0) {
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av_buffer_unref(&frame->hw_frames_ctx);
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return ret;
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}
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return 0;
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}
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