| /* |
| * 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 "config.h" |
| |
| #include "buffer.h" |
| #include "common.h" |
| #include "hwcontext.h" |
| #include "hwcontext_internal.h" |
| #include "imgutils.h" |
| #include "log.h" |
| #include "mem.h" |
| #include "pixdesc.h" |
| #include "pixfmt.h" |
| |
| static const HWContextType * const hw_table[] = { |
| #if CONFIG_CUDA |
| &ff_hwcontext_type_cuda, |
| #endif |
| #if CONFIG_D3D11VA |
| &ff_hwcontext_type_d3d11va, |
| #endif |
| #if CONFIG_LIBDRM |
| &ff_hwcontext_type_drm, |
| #endif |
| #if CONFIG_DXVA2 |
| &ff_hwcontext_type_dxva2, |
| #endif |
| #if CONFIG_OPENCL |
| &ff_hwcontext_type_opencl, |
| #endif |
| #if CONFIG_QSV |
| &ff_hwcontext_type_qsv, |
| #endif |
| #if CONFIG_VAAPI |
| &ff_hwcontext_type_vaapi, |
| #endif |
| #if CONFIG_VDPAU |
| &ff_hwcontext_type_vdpau, |
| #endif |
| #if CONFIG_VIDEOTOOLBOX |
| &ff_hwcontext_type_videotoolbox, |
| #endif |
| #if CONFIG_MEDIACODEC |
| &ff_hwcontext_type_mediacodec, |
| #endif |
| #if CONFIG_VULKAN |
| &ff_hwcontext_type_vulkan, |
| #endif |
| NULL, |
| }; |
| |
| static const char *const hw_type_names[] = { |
| [AV_HWDEVICE_TYPE_CUDA] = "cuda", |
| [AV_HWDEVICE_TYPE_DRM] = "drm", |
| [AV_HWDEVICE_TYPE_DXVA2] = "dxva2", |
| [AV_HWDEVICE_TYPE_D3D11VA] = "d3d11va", |
| [AV_HWDEVICE_TYPE_OPENCL] = "opencl", |
| [AV_HWDEVICE_TYPE_QSV] = "qsv", |
| [AV_HWDEVICE_TYPE_VAAPI] = "vaapi", |
| [AV_HWDEVICE_TYPE_VDPAU] = "vdpau", |
| [AV_HWDEVICE_TYPE_VIDEOTOOLBOX] = "videotoolbox", |
| [AV_HWDEVICE_TYPE_MEDIACODEC] = "mediacodec", |
| [AV_HWDEVICE_TYPE_VULKAN] = "vulkan", |
| }; |
| |
| enum AVHWDeviceType av_hwdevice_find_type_by_name(const char *name) |
| { |
| int type; |
| for (type = 0; type < FF_ARRAY_ELEMS(hw_type_names); type++) { |
| if (hw_type_names[type] && !strcmp(hw_type_names[type], name)) |
| return type; |
| } |
| return AV_HWDEVICE_TYPE_NONE; |
| } |
| |
| const char *av_hwdevice_get_type_name(enum AVHWDeviceType type) |
| { |
| if (type > AV_HWDEVICE_TYPE_NONE && |
| type < FF_ARRAY_ELEMS(hw_type_names)) |
| return hw_type_names[type]; |
| else |
| return NULL; |
| } |
| |
| enum AVHWDeviceType av_hwdevice_iterate_types(enum AVHWDeviceType prev) |
| { |
| enum AVHWDeviceType next; |
| int i, set = 0; |
| for (i = 0; hw_table[i]; i++) { |
| if (prev != AV_HWDEVICE_TYPE_NONE && hw_table[i]->type <= prev) |
| continue; |
| if (!set || hw_table[i]->type < next) { |
| next = hw_table[i]->type; |
| set = 1; |
| } |
| } |
| return set ? next : AV_HWDEVICE_TYPE_NONE; |
| } |
| |
| static const AVClass hwdevice_ctx_class = { |
| .class_name = "AVHWDeviceContext", |
| .item_name = av_default_item_name, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| static void hwdevice_ctx_free(void *opaque, uint8_t *data) |
| { |
| AVHWDeviceContext *ctx = (AVHWDeviceContext*)data; |
| |
| /* uninit might still want access the hw context and the user |
| * free() callback might destroy it, so uninit has to be called first */ |
| if (ctx->internal->hw_type->device_uninit) |
| ctx->internal->hw_type->device_uninit(ctx); |
| |
| if (ctx->free) |
| ctx->free(ctx); |
| |
| av_buffer_unref(&ctx->internal->source_device); |
| |
| av_freep(&ctx->hwctx); |
| av_freep(&ctx->internal->priv); |
| av_freep(&ctx->internal); |
| av_freep(&ctx); |
| } |
| |
| AVBufferRef *av_hwdevice_ctx_alloc(enum AVHWDeviceType type) |
| { |
| AVHWDeviceContext *ctx; |
| AVBufferRef *buf; |
| const HWContextType *hw_type = NULL; |
| int i; |
| |
| for (i = 0; hw_table[i]; i++) { |
| if (hw_table[i]->type == type) { |
| hw_type = hw_table[i]; |
| break; |
| } |
| } |
| if (!hw_type) |
| return NULL; |
| |
| ctx = av_mallocz(sizeof(*ctx)); |
| if (!ctx) |
| return NULL; |
| |
| ctx->internal = av_mallocz(sizeof(*ctx->internal)); |
| if (!ctx->internal) |
| goto fail; |
| |
| if (hw_type->device_priv_size) { |
| ctx->internal->priv = av_mallocz(hw_type->device_priv_size); |
| if (!ctx->internal->priv) |
| goto fail; |
| } |
| |
| if (hw_type->device_hwctx_size) { |
| ctx->hwctx = av_mallocz(hw_type->device_hwctx_size); |
| if (!ctx->hwctx) |
| goto fail; |
| } |
| |
| buf = av_buffer_create((uint8_t*)ctx, sizeof(*ctx), |
| hwdevice_ctx_free, NULL, |
| AV_BUFFER_FLAG_READONLY); |
| if (!buf) |
| goto fail; |
| |
| ctx->type = type; |
| ctx->av_class = &hwdevice_ctx_class; |
| |
| ctx->internal->hw_type = hw_type; |
| |
| return buf; |
| |
| fail: |
| if (ctx->internal) |
| av_freep(&ctx->internal->priv); |
| av_freep(&ctx->internal); |
| av_freep(&ctx->hwctx); |
| av_freep(&ctx); |
| return NULL; |
| } |
| |
| int av_hwdevice_ctx_init(AVBufferRef *ref) |
| { |
| AVHWDeviceContext *ctx = (AVHWDeviceContext*)ref->data; |
| int ret; |
| |
| if (ctx->internal->hw_type->device_init) { |
| ret = ctx->internal->hw_type->device_init(ctx); |
| if (ret < 0) |
| goto fail; |
| } |
| |
| return 0; |
| fail: |
| if (ctx->internal->hw_type->device_uninit) |
| ctx->internal->hw_type->device_uninit(ctx); |
| return ret; |
| } |
| |
| static const AVClass hwframe_ctx_class = { |
| .class_name = "AVHWFramesContext", |
| .item_name = av_default_item_name, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| static void hwframe_ctx_free(void *opaque, uint8_t *data) |
| { |
| AVHWFramesContext *ctx = (AVHWFramesContext*)data; |
| |
| if (ctx->internal->pool_internal) |
| av_buffer_pool_uninit(&ctx->internal->pool_internal); |
| |
| if (ctx->internal->hw_type->frames_uninit) |
| ctx->internal->hw_type->frames_uninit(ctx); |
| |
| if (ctx->free) |
| ctx->free(ctx); |
| |
| av_buffer_unref(&ctx->internal->source_frames); |
| |
| av_buffer_unref(&ctx->device_ref); |
| |
| av_freep(&ctx->hwctx); |
| av_freep(&ctx->internal->priv); |
| av_freep(&ctx->internal); |
| av_freep(&ctx); |
| } |
| |
| AVBufferRef *av_hwframe_ctx_alloc(AVBufferRef *device_ref_in) |
| { |
| AVHWDeviceContext *device_ctx = (AVHWDeviceContext*)device_ref_in->data; |
| const HWContextType *hw_type = device_ctx->internal->hw_type; |
| AVHWFramesContext *ctx; |
| AVBufferRef *buf, *device_ref = NULL; |
| |
| ctx = av_mallocz(sizeof(*ctx)); |
| if (!ctx) |
| return NULL; |
| |
| ctx->internal = av_mallocz(sizeof(*ctx->internal)); |
| if (!ctx->internal) |
| goto fail; |
| |
| if (hw_type->frames_priv_size) { |
| ctx->internal->priv = av_mallocz(hw_type->frames_priv_size); |
| if (!ctx->internal->priv) |
| goto fail; |
| } |
| |
| if (hw_type->frames_hwctx_size) { |
| ctx->hwctx = av_mallocz(hw_type->frames_hwctx_size); |
| if (!ctx->hwctx) |
| goto fail; |
| } |
| |
| device_ref = av_buffer_ref(device_ref_in); |
| if (!device_ref) |
| goto fail; |
| |
| buf = av_buffer_create((uint8_t*)ctx, sizeof(*ctx), |
| hwframe_ctx_free, NULL, |
| AV_BUFFER_FLAG_READONLY); |
| if (!buf) |
| goto fail; |
| |
| ctx->av_class = &hwframe_ctx_class; |
| ctx->device_ref = device_ref; |
| ctx->device_ctx = device_ctx; |
| ctx->format = AV_PIX_FMT_NONE; |
| ctx->sw_format = AV_PIX_FMT_NONE; |
| |
| ctx->internal->hw_type = hw_type; |
| |
| return buf; |
| |
| fail: |
| if (device_ref) |
| av_buffer_unref(&device_ref); |
| if (ctx->internal) |
| av_freep(&ctx->internal->priv); |
| av_freep(&ctx->internal); |
| av_freep(&ctx->hwctx); |
| av_freep(&ctx); |
| return NULL; |
| } |
| |
| static int hwframe_pool_prealloc(AVBufferRef *ref) |
| { |
| AVHWFramesContext *ctx = (AVHWFramesContext*)ref->data; |
| AVFrame **frames; |
| int i, ret = 0; |
| |
| frames = av_mallocz_array(ctx->initial_pool_size, sizeof(*frames)); |
| if (!frames) |
| return AVERROR(ENOMEM); |
| |
| for (i = 0; i < ctx->initial_pool_size; i++) { |
| frames[i] = av_frame_alloc(); |
| if (!frames[i]) |
| goto fail; |
| |
| ret = av_hwframe_get_buffer(ref, frames[i], 0); |
| if (ret < 0) |
| goto fail; |
| } |
| |
| fail: |
| for (i = 0; i < ctx->initial_pool_size; i++) |
| av_frame_free(&frames[i]); |
| av_freep(&frames); |
| |
| return ret; |
| } |
| |
| int av_hwframe_ctx_init(AVBufferRef *ref) |
| { |
| AVHWFramesContext *ctx = (AVHWFramesContext*)ref->data; |
| const enum AVPixelFormat *pix_fmt; |
| int ret; |
| |
| if (ctx->internal->source_frames) { |
| /* A derived frame context is already initialised. */ |
| return 0; |
| } |
| |
| /* validate the pixel format */ |
| for (pix_fmt = ctx->internal->hw_type->pix_fmts; *pix_fmt != AV_PIX_FMT_NONE; pix_fmt++) { |
| if (*pix_fmt == ctx->format) |
| break; |
| } |
| if (*pix_fmt == AV_PIX_FMT_NONE) { |
| av_log(ctx, AV_LOG_ERROR, |
| "The hardware pixel format '%s' is not supported by the device type '%s'\n", |
| av_get_pix_fmt_name(ctx->format), ctx->internal->hw_type->name); |
| return AVERROR(ENOSYS); |
| } |
| |
| /* validate the dimensions */ |
| ret = av_image_check_size(ctx->width, ctx->height, 0, ctx); |
| if (ret < 0) |
| return ret; |
| |
| /* format-specific init */ |
| if (ctx->internal->hw_type->frames_init) { |
| ret = ctx->internal->hw_type->frames_init(ctx); |
| if (ret < 0) |
| goto fail; |
| } |
| |
| if (ctx->internal->pool_internal && !ctx->pool) |
| ctx->pool = ctx->internal->pool_internal; |
| |
| /* preallocate the frames in the pool, if requested */ |
| if (ctx->initial_pool_size > 0) { |
| ret = hwframe_pool_prealloc(ref); |
| if (ret < 0) |
| goto fail; |
| } |
| |
| return 0; |
| fail: |
| if (ctx->internal->hw_type->frames_uninit) |
| ctx->internal->hw_type->frames_uninit(ctx); |
| return ret; |
| } |
| |
| int av_hwframe_transfer_get_formats(AVBufferRef *hwframe_ref, |
| enum AVHWFrameTransferDirection dir, |
| enum AVPixelFormat **formats, int flags) |
| { |
| AVHWFramesContext *ctx = (AVHWFramesContext*)hwframe_ref->data; |
| |
| if (!ctx->internal->hw_type->transfer_get_formats) |
| return AVERROR(ENOSYS); |
| |
| return ctx->internal->hw_type->transfer_get_formats(ctx, dir, formats); |
| } |
| |
| static int transfer_data_alloc(AVFrame *dst, const AVFrame *src, int flags) |
| { |
| AVHWFramesContext *ctx = (AVHWFramesContext*)src->hw_frames_ctx->data; |
| AVFrame *frame_tmp; |
| int ret = 0; |
| |
| frame_tmp = av_frame_alloc(); |
| if (!frame_tmp) |
| return AVERROR(ENOMEM); |
| |
| /* if the format is set, use that |
| * otherwise pick the first supported one */ |
| if (dst->format >= 0) { |
| frame_tmp->format = dst->format; |
| } else { |
| enum AVPixelFormat *formats; |
| |
| ret = av_hwframe_transfer_get_formats(src->hw_frames_ctx, |
| AV_HWFRAME_TRANSFER_DIRECTION_FROM, |
| &formats, 0); |
| if (ret < 0) |
| goto fail; |
| frame_tmp->format = formats[0]; |
| av_freep(&formats); |
| } |
| frame_tmp->width = ctx->width; |
| frame_tmp->height = ctx->height; |
| |
| ret = av_frame_get_buffer(frame_tmp, 0); |
| if (ret < 0) |
| goto fail; |
| |
| ret = av_hwframe_transfer_data(frame_tmp, src, flags); |
| if (ret < 0) |
| goto fail; |
| |
| frame_tmp->width = src->width; |
| frame_tmp->height = src->height; |
| |
| av_frame_move_ref(dst, frame_tmp); |
| |
| fail: |
| av_frame_free(&frame_tmp); |
| return ret; |
| } |
| |
| int av_hwframe_transfer_data(AVFrame *dst, const AVFrame *src, int flags) |
| { |
| AVHWFramesContext *ctx; |
| int ret; |
| |
| if (!dst->buf[0]) |
| return transfer_data_alloc(dst, src, flags); |
| |
| /* |
| * Hardware -> Hardware Transfer. |
| * Unlike Software -> Hardware or Hardware -> Software, the transfer |
| * function could be provided by either the src or dst, depending on |
| * the specific combination of hardware. |
| */ |
| if (src->hw_frames_ctx && dst->hw_frames_ctx) { |
| AVHWFramesContext *src_ctx = |
| (AVHWFramesContext*)src->hw_frames_ctx->data; |
| AVHWFramesContext *dst_ctx = |
| (AVHWFramesContext*)dst->hw_frames_ctx->data; |
| |
| if (src_ctx->internal->source_frames) { |
| av_log(src_ctx, AV_LOG_ERROR, |
| "A device with a derived frame context cannot be used as " |
| "the source of a HW -> HW transfer."); |
| return AVERROR(ENOSYS); |
| } |
| |
| if (dst_ctx->internal->source_frames) { |
| av_log(src_ctx, AV_LOG_ERROR, |
| "A device with a derived frame context cannot be used as " |
| "the destination of a HW -> HW transfer."); |
| return AVERROR(ENOSYS); |
| } |
| |
| ret = src_ctx->internal->hw_type->transfer_data_from(src_ctx, dst, src); |
| if (ret == AVERROR(ENOSYS)) |
| ret = dst_ctx->internal->hw_type->transfer_data_to(dst_ctx, dst, src); |
| if (ret < 0) |
| return ret; |
| } else { |
| if (src->hw_frames_ctx) { |
| ctx = (AVHWFramesContext*)src->hw_frames_ctx->data; |
| |
| ret = ctx->internal->hw_type->transfer_data_from(ctx, dst, src); |
| if (ret < 0) |
| return ret; |
| } else if (dst->hw_frames_ctx) { |
| ctx = (AVHWFramesContext*)dst->hw_frames_ctx->data; |
| |
| ret = ctx->internal->hw_type->transfer_data_to(ctx, dst, src); |
| if (ret < 0) |
| return ret; |
| } else { |
| return AVERROR(ENOSYS); |
| } |
| } |
| return 0; |
| } |
| |
| int av_hwframe_get_buffer(AVBufferRef *hwframe_ref, AVFrame *frame, int flags) |
| { |
| AVHWFramesContext *ctx = (AVHWFramesContext*)hwframe_ref->data; |
| int ret; |
| |
| if (ctx->internal->source_frames) { |
| // This is a derived frame context, so we allocate in the source |
| // and map the frame immediately. |
| AVFrame *src_frame; |
| |
| frame->format = ctx->format; |
| frame->hw_frames_ctx = av_buffer_ref(hwframe_ref); |
| if (!frame->hw_frames_ctx) |
| return AVERROR(ENOMEM); |
| |
| src_frame = av_frame_alloc(); |
| if (!src_frame) |
| return AVERROR(ENOMEM); |
| |
| ret = av_hwframe_get_buffer(ctx->internal->source_frames, |
| src_frame, 0); |
| if (ret < 0) { |
| av_frame_free(&src_frame); |
| return ret; |
| } |
| |
| ret = av_hwframe_map(frame, src_frame, |
| ctx->internal->source_allocation_map_flags); |
| if (ret) { |
| av_log(ctx, AV_LOG_ERROR, "Failed to map frame into derived " |
| "frame context: %d.\n", ret); |
| av_frame_free(&src_frame); |
| return ret; |
| } |
| |
| // Free the source frame immediately - the mapped frame still |
| // contains a reference to it. |
| av_frame_free(&src_frame); |
| |
| return 0; |
| } |
| |
| if (!ctx->internal->hw_type->frames_get_buffer) |
| return AVERROR(ENOSYS); |
| |
| if (!ctx->pool) |
| return AVERROR(EINVAL); |
| |
| frame->hw_frames_ctx = av_buffer_ref(hwframe_ref); |
| if (!frame->hw_frames_ctx) |
| return AVERROR(ENOMEM); |
| |
| ret = ctx->internal->hw_type->frames_get_buffer(ctx, frame); |
| if (ret < 0) { |
| av_buffer_unref(&frame->hw_frames_ctx); |
| return ret; |
| } |
| |
| frame->extended_data = frame->data; |
| |
| return 0; |
| } |
| |
| void *av_hwdevice_hwconfig_alloc(AVBufferRef *ref) |
| { |
| AVHWDeviceContext *ctx = (AVHWDeviceContext*)ref->data; |
| const HWContextType *hw_type = ctx->internal->hw_type; |
| |
| if (hw_type->device_hwconfig_size == 0) |
| return NULL; |
| |
| return av_mallocz(hw_type->device_hwconfig_size); |
| } |
| |
| AVHWFramesConstraints *av_hwdevice_get_hwframe_constraints(AVBufferRef *ref, |
| const void *hwconfig) |
| { |
| AVHWDeviceContext *ctx = (AVHWDeviceContext*)ref->data; |
| const HWContextType *hw_type = ctx->internal->hw_type; |
| AVHWFramesConstraints *constraints; |
| |
| if (!hw_type->frames_get_constraints) |
| return NULL; |
| |
| constraints = av_mallocz(sizeof(*constraints)); |
| if (!constraints) |
| return NULL; |
| |
| constraints->min_width = constraints->min_height = 0; |
| constraints->max_width = constraints->max_height = INT_MAX; |
| |
| if (hw_type->frames_get_constraints(ctx, hwconfig, constraints) >= 0) { |
| return constraints; |
| } else { |
| av_hwframe_constraints_free(&constraints); |
| return NULL; |
| } |
| } |
| |
| void av_hwframe_constraints_free(AVHWFramesConstraints **constraints) |
| { |
| if (*constraints) { |
| av_freep(&(*constraints)->valid_hw_formats); |
| av_freep(&(*constraints)->valid_sw_formats); |
| } |
| av_freep(constraints); |
| } |
| |
| int av_hwdevice_ctx_create(AVBufferRef **pdevice_ref, enum AVHWDeviceType type, |
| const char *device, AVDictionary *opts, int flags) |
| { |
| AVBufferRef *device_ref = NULL; |
| AVHWDeviceContext *device_ctx; |
| int ret = 0; |
| |
| device_ref = av_hwdevice_ctx_alloc(type); |
| if (!device_ref) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| device_ctx = (AVHWDeviceContext*)device_ref->data; |
| |
| if (!device_ctx->internal->hw_type->device_create) { |
| ret = AVERROR(ENOSYS); |
| goto fail; |
| } |
| |
| ret = device_ctx->internal->hw_type->device_create(device_ctx, device, |
| opts, flags); |
| if (ret < 0) |
| goto fail; |
| |
| ret = av_hwdevice_ctx_init(device_ref); |
| if (ret < 0) |
| goto fail; |
| |
| *pdevice_ref = device_ref; |
| return 0; |
| fail: |
| av_buffer_unref(&device_ref); |
| *pdevice_ref = NULL; |
| return ret; |
| } |
| |
| int av_hwdevice_ctx_create_derived_opts(AVBufferRef **dst_ref_ptr, |
| enum AVHWDeviceType type, |
| AVBufferRef *src_ref, |
| AVDictionary *options, int flags) |
| { |
| AVBufferRef *dst_ref = NULL, *tmp_ref; |
| AVHWDeviceContext *dst_ctx, *tmp_ctx; |
| int ret = 0; |
| |
| tmp_ref = src_ref; |
| while (tmp_ref) { |
| tmp_ctx = (AVHWDeviceContext*)tmp_ref->data; |
| if (tmp_ctx->type == type) { |
| dst_ref = av_buffer_ref(tmp_ref); |
| if (!dst_ref) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| goto done; |
| } |
| tmp_ref = tmp_ctx->internal->source_device; |
| } |
| |
| dst_ref = av_hwdevice_ctx_alloc(type); |
| if (!dst_ref) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| dst_ctx = (AVHWDeviceContext*)dst_ref->data; |
| |
| tmp_ref = src_ref; |
| while (tmp_ref) { |
| tmp_ctx = (AVHWDeviceContext*)tmp_ref->data; |
| if (dst_ctx->internal->hw_type->device_derive) { |
| ret = dst_ctx->internal->hw_type->device_derive(dst_ctx, |
| tmp_ctx, |
| options, |
| flags); |
| if (ret == 0) { |
| dst_ctx->internal->source_device = av_buffer_ref(src_ref); |
| if (!dst_ctx->internal->source_device) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| ret = av_hwdevice_ctx_init(dst_ref); |
| if (ret < 0) |
| goto fail; |
| goto done; |
| } |
| if (ret != AVERROR(ENOSYS)) |
| goto fail; |
| } |
| tmp_ref = tmp_ctx->internal->source_device; |
| } |
| |
| ret = AVERROR(ENOSYS); |
| goto fail; |
| |
| done: |
| *dst_ref_ptr = dst_ref; |
| return 0; |
| |
| fail: |
| av_buffer_unref(&dst_ref); |
| *dst_ref_ptr = NULL; |
| return ret; |
| } |
| |
| int av_hwdevice_ctx_create_derived(AVBufferRef **dst_ref_ptr, |
| enum AVHWDeviceType type, |
| AVBufferRef *src_ref, int flags) |
| { |
| return av_hwdevice_ctx_create_derived_opts(dst_ref_ptr, type, src_ref, |
| NULL, flags); |
| } |
| |
| static void ff_hwframe_unmap(void *opaque, uint8_t *data) |
| { |
| HWMapDescriptor *hwmap = (HWMapDescriptor*)data; |
| AVHWFramesContext *ctx = opaque; |
| |
| if (hwmap->unmap) |
| hwmap->unmap(ctx, hwmap); |
| |
| av_frame_free(&hwmap->source); |
| |
| av_buffer_unref(&hwmap->hw_frames_ctx); |
| |
| av_free(hwmap); |
| } |
| |
| int ff_hwframe_map_create(AVBufferRef *hwframe_ref, |
| AVFrame *dst, const AVFrame *src, |
| void (*unmap)(AVHWFramesContext *ctx, |
| HWMapDescriptor *hwmap), |
| void *priv) |
| { |
| AVHWFramesContext *ctx = (AVHWFramesContext*)hwframe_ref->data; |
| HWMapDescriptor *hwmap; |
| int ret; |
| |
| hwmap = av_mallocz(sizeof(*hwmap)); |
| if (!hwmap) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| hwmap->source = av_frame_alloc(); |
| if (!hwmap->source) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| ret = av_frame_ref(hwmap->source, src); |
| if (ret < 0) |
| goto fail; |
| |
| hwmap->hw_frames_ctx = av_buffer_ref(hwframe_ref); |
| if (!hwmap->hw_frames_ctx) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| hwmap->unmap = unmap; |
| hwmap->priv = priv; |
| |
| dst->buf[0] = av_buffer_create((uint8_t*)hwmap, sizeof(*hwmap), |
| &ff_hwframe_unmap, ctx, 0); |
| if (!dst->buf[0]) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| return 0; |
| |
| fail: |
| if (hwmap) { |
| av_buffer_unref(&hwmap->hw_frames_ctx); |
| av_frame_free(&hwmap->source); |
| } |
| av_free(hwmap); |
| return ret; |
| } |
| |
| int av_hwframe_map(AVFrame *dst, const AVFrame *src, int flags) |
| { |
| AVHWFramesContext *src_frames, *dst_frames; |
| HWMapDescriptor *hwmap; |
| int ret; |
| |
| if (src->hw_frames_ctx && dst->hw_frames_ctx) { |
| src_frames = (AVHWFramesContext*)src->hw_frames_ctx->data; |
| dst_frames = (AVHWFramesContext*)dst->hw_frames_ctx->data; |
| |
| if ((src_frames == dst_frames && |
| src->format == dst_frames->sw_format && |
| dst->format == dst_frames->format) || |
| (src_frames->internal->source_frames && |
| src_frames->internal->source_frames->data == |
| (uint8_t*)dst_frames)) { |
| // This is an unmap operation. We don't need to directly |
| // do anything here other than fill in the original frame, |
| // because the real unmap will be invoked when the last |
| // reference to the mapped frame disappears. |
| if (!src->buf[0]) { |
| av_log(src_frames, AV_LOG_ERROR, "Invalid mapping " |
| "found when attempting unmap.\n"); |
| return AVERROR(EINVAL); |
| } |
| hwmap = (HWMapDescriptor*)src->buf[0]->data; |
| av_frame_unref(dst); |
| return av_frame_ref(dst, hwmap->source); |
| } |
| } |
| |
| if (src->hw_frames_ctx) { |
| src_frames = (AVHWFramesContext*)src->hw_frames_ctx->data; |
| |
| if (src_frames->format == src->format && |
| src_frames->internal->hw_type->map_from) { |
| ret = src_frames->internal->hw_type->map_from(src_frames, |
| dst, src, flags); |
| if (ret != AVERROR(ENOSYS)) |
| return ret; |
| } |
| } |
| |
| if (dst->hw_frames_ctx) { |
| dst_frames = (AVHWFramesContext*)dst->hw_frames_ctx->data; |
| |
| if (dst_frames->format == dst->format && |
| dst_frames->internal->hw_type->map_to) { |
| ret = dst_frames->internal->hw_type->map_to(dst_frames, |
| dst, src, flags); |
| if (ret != AVERROR(ENOSYS)) |
| return ret; |
| } |
| } |
| |
| return AVERROR(ENOSYS); |
| } |
| |
| int av_hwframe_ctx_create_derived(AVBufferRef **derived_frame_ctx, |
| enum AVPixelFormat format, |
| AVBufferRef *derived_device_ctx, |
| AVBufferRef *source_frame_ctx, |
| int flags) |
| { |
| AVBufferRef *dst_ref = NULL; |
| AVHWFramesContext *dst = NULL; |
| AVHWFramesContext *src = (AVHWFramesContext*)source_frame_ctx->data; |
| int ret; |
| |
| if (src->internal->source_frames) { |
| AVHWFramesContext *src_src = |
| (AVHWFramesContext*)src->internal->source_frames->data; |
| AVHWDeviceContext *dst_dev = |
| (AVHWDeviceContext*)derived_device_ctx->data; |
| |
| if (src_src->device_ctx == dst_dev) { |
| // This is actually an unmapping, so we just return a |
| // reference to the source frame context. |
| *derived_frame_ctx = |
| av_buffer_ref(src->internal->source_frames); |
| if (!*derived_frame_ctx) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| return 0; |
| } |
| } |
| |
| dst_ref = av_hwframe_ctx_alloc(derived_device_ctx); |
| if (!dst_ref) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| dst = (AVHWFramesContext*)dst_ref->data; |
| |
| dst->format = format; |
| dst->sw_format = src->sw_format; |
| dst->width = src->width; |
| dst->height = src->height; |
| |
| dst->internal->source_frames = av_buffer_ref(source_frame_ctx); |
| if (!dst->internal->source_frames) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| dst->internal->source_allocation_map_flags = |
| flags & (AV_HWFRAME_MAP_READ | |
| AV_HWFRAME_MAP_WRITE | |
| AV_HWFRAME_MAP_OVERWRITE | |
| AV_HWFRAME_MAP_DIRECT); |
| |
| ret = AVERROR(ENOSYS); |
| if (src->internal->hw_type->frames_derive_from) |
| ret = src->internal->hw_type->frames_derive_from(dst, src, flags); |
| if (ret == AVERROR(ENOSYS) && |
| dst->internal->hw_type->frames_derive_to) |
| ret = dst->internal->hw_type->frames_derive_to(dst, src, flags); |
| if (ret == AVERROR(ENOSYS)) |
| ret = 0; |
| if (ret) |
| goto fail; |
| |
| *derived_frame_ctx = dst_ref; |
| return 0; |
| |
| fail: |
| if (dst) |
| av_buffer_unref(&dst->internal->source_frames); |
| av_buffer_unref(&dst_ref); |
| return ret; |
| } |
| |
| int ff_hwframe_map_replace(AVFrame *dst, const AVFrame *src) |
| { |
| HWMapDescriptor *hwmap = (HWMapDescriptor*)dst->buf[0]->data; |
| av_frame_unref(hwmap->source); |
| return av_frame_ref(hwmap->source, src); |
| } |
