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authorMoonchild <mcwerewolf@gmail.com>2018-10-01 15:25:04 +0200
committerGitHub <noreply@github.com>2018-10-01 15:25:04 +0200
commit45c24f05d023a2cd8289ed40a13708392ce2e6a4 (patch)
treefef75d382fc6216a093eeaf80560473dff19d883 /media/ffvpx/libavutil/hwcontext.c
parent79b00fc33b5cb6d56d29b50efac6d62ce3a89018 (diff)
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Revert "Update ffvpx code to 4.0.2"
Diffstat (limited to 'media/ffvpx/libavutil/hwcontext.c')
-rw-r--r--media/ffvpx/libavutil/hwcontext.c873
1 files changed, 0 insertions, 873 deletions
diff --git a/media/ffvpx/libavutil/hwcontext.c b/media/ffvpx/libavutil/hwcontext.c
deleted file mode 100644
index 70c556eca..000000000
--- a/media/ffvpx/libavutil/hwcontext.c
+++ /dev/null
@@ -1,873 +0,0 @@
-/*
- * 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
- 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",
-};
-
-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, 32);
- 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);
-
- 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;
- }
-
- 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(AVBufferRef **dst_ref_ptr,
- enum AVHWDeviceType type,
- AVBufferRef *src_ref, 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,
- 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;
- }
- goto done;
- }
- if (ret != AVERROR(ENOSYS))
- goto fail;
- }
- tmp_ref = tmp_ctx->internal->source_device;
- }
-
- ret = AVERROR(ENOSYS);
- goto fail;
-
-done:
- ret = av_hwdevice_ctx_init(dst_ref);
- if (ret < 0)
- goto fail;
-
- *dst_ref_ptr = dst_ref;
- return 0;
-
-fail:
- av_buffer_unref(&dst_ref);
- *dst_ref_ptr = NULL;
- return ret;
-}
-
-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;
-}