mirror of
https://github.com/librempeg/librempeg
synced 2024-11-23 03:28:27 +00:00
ffmpeg_qsv: Fix hwaccel transcoding
Set up the encoder with a hardware context which will match the one the decoder will use when it starts later. Includes02c2761973, with additional hackery to get arounda3a0230a98being skipped.
This commit is contained in:
Mark Thompson
parent
411ecb0be6
commit
03cef34aa6
233
ffmpeg_qsv.c
233
ffmpeg_qsv.c
@ -20,127 +20,74 @@
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#include <stdlib.h>
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#include "libavutil/dict.h"
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#include "libavutil/hwcontext.h"
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#include "libavutil/hwcontext_qsv.h"
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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#include "libavcodec/qsv.h"
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#include "ffmpeg.h"
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typedef struct QSVContext {
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OutputStream *ost;
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mfxSession session;
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mfxExtOpaqueSurfaceAlloc opaque_alloc;
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AVBufferRef *opaque_surfaces_buf;
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uint8_t *surface_used;
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mfxFrameSurface1 **surface_ptrs;
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int nb_surfaces;
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mfxExtBuffer *ext_buffers[1];
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} QSVContext;
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static void buffer_release(void *opaque, uint8_t *data)
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{
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*(uint8_t*)opaque = 0;
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}
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static int qsv_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
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{
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InputStream *ist = s->opaque;
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QSVContext *qsv = ist->hwaccel_ctx;
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int i;
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for (i = 0; i < qsv->nb_surfaces; i++) {
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if (qsv->surface_used[i])
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continue;
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frame->buf[0] = av_buffer_create((uint8_t*)qsv->surface_ptrs[i], sizeof(*qsv->surface_ptrs[i]),
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buffer_release, &qsv->surface_used[i], 0);
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if (!frame->buf[0])
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return AVERROR(ENOMEM);
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frame->data[3] = (uint8_t*)qsv->surface_ptrs[i];
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qsv->surface_used[i] = 1;
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return 0;
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}
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return AVERROR(ENOMEM);
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}
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static int init_opaque_surf(QSVContext *qsv)
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{
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AVQSVContext *hwctx_enc = qsv->ost->enc_ctx->hwaccel_context;
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mfxFrameSurface1 *surfaces;
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int i;
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qsv->nb_surfaces = hwctx_enc->nb_opaque_surfaces;
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qsv->opaque_surfaces_buf = av_buffer_ref(hwctx_enc->opaque_surfaces);
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qsv->surface_ptrs = av_mallocz_array(qsv->nb_surfaces, sizeof(*qsv->surface_ptrs));
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qsv->surface_used = av_mallocz_array(qsv->nb_surfaces, sizeof(*qsv->surface_used));
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if (!qsv->opaque_surfaces_buf || !qsv->surface_ptrs || !qsv->surface_used)
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return AVERROR(ENOMEM);
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surfaces = (mfxFrameSurface1*)qsv->opaque_surfaces_buf->data;
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for (i = 0; i < qsv->nb_surfaces; i++)
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qsv->surface_ptrs[i] = surfaces + i;
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qsv->opaque_alloc.Out.Surfaces = qsv->surface_ptrs;
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qsv->opaque_alloc.Out.NumSurface = qsv->nb_surfaces;
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qsv->opaque_alloc.Out.Type = hwctx_enc->opaque_alloc_type;
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qsv->opaque_alloc.Header.BufferId = MFX_EXTBUFF_OPAQUE_SURFACE_ALLOCATION;
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qsv->opaque_alloc.Header.BufferSz = sizeof(qsv->opaque_alloc);
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qsv->ext_buffers[0] = (mfxExtBuffer*)&qsv->opaque_alloc;
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return 0;
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return av_hwframe_get_buffer(ist->hw_frames_ctx, frame, 0);
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}
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static void qsv_uninit(AVCodecContext *s)
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{
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InputStream *ist = s->opaque;
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QSVContext *qsv = ist->hwaccel_ctx;
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av_buffer_unref(&ist->hw_frames_ctx);
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}
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av_freep(&qsv->ost->enc_ctx->hwaccel_context);
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av_freep(&s->hwaccel_context);
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static int qsv_device_init(InputStream *ist)
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{
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int err;
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av_buffer_unref(&qsv->opaque_surfaces_buf);
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av_freep(&qsv->surface_used);
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av_freep(&qsv->surface_ptrs);
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err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_QSV,
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ist->hwaccel_device, NULL, 0);
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if (err < 0) {
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av_log(NULL, AV_LOG_ERROR, "Error creating a QSV device\n");
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return err;
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}
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av_freep(&qsv);
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return 0;
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}
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int qsv_init(AVCodecContext *s)
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{
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InputStream *ist = s->opaque;
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QSVContext *qsv = ist->hwaccel_ctx;
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AVQSVContext *hwctx_dec;
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AVHWFramesContext *frames_ctx;
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AVQSVFramesContext *frames_hwctx;
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int ret;
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if (!qsv) {
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av_log(NULL, AV_LOG_ERROR, "QSV transcoding is not initialized. "
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"-hwaccel qsv should only be used for one-to-one QSV transcoding "
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"with no filters.\n");
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return AVERROR_BUG;
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if (!hw_device_ctx) {
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ret = qsv_device_init(ist);
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if (ret < 0)
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return ret;
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}
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ret = init_opaque_surf(qsv);
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if (ret < 0)
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return ret;
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hwctx_dec = av_qsv_alloc_context();
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if (!hwctx_dec)
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av_buffer_unref(&ist->hw_frames_ctx);
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ist->hw_frames_ctx = av_hwframe_ctx_alloc(hw_device_ctx);
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if (!ist->hw_frames_ctx)
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return AVERROR(ENOMEM);
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hwctx_dec->session = qsv->session;
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hwctx_dec->iopattern = MFX_IOPATTERN_OUT_OPAQUE_MEMORY;
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hwctx_dec->ext_buffers = qsv->ext_buffers;
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hwctx_dec->nb_ext_buffers = FF_ARRAY_ELEMS(qsv->ext_buffers);
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frames_ctx = (AVHWFramesContext*)ist->hw_frames_ctx->data;
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frames_hwctx = frames_ctx->hwctx;
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av_freep(&s->hwaccel_context);
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s->hwaccel_context = hwctx_dec;
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frames_ctx->width = FFALIGN(s->coded_width, 32);
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frames_ctx->height = FFALIGN(s->coded_height, 32);
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frames_ctx->format = AV_PIX_FMT_QSV;
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frames_ctx->sw_format = s->sw_pix_fmt;
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frames_ctx->initial_pool_size = 64;
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frames_hwctx->frame_type = MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET;
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ret = av_hwframe_ctx_init(ist->hw_frames_ctx);
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if (ret < 0) {
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av_log(NULL, AV_LOG_ERROR, "Error initializing a QSV frame pool\n");
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return ret;
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}
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ist->hwaccel_get_buffer = qsv_get_buffer;
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ist->hwaccel_uninit = qsv_uninit;
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@ -148,53 +95,15 @@ int qsv_init(AVCodecContext *s)
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return 0;
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}
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static mfxIMPL choose_implementation(const InputStream *ist)
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{
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static const struct {
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const char *name;
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mfxIMPL impl;
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} impl_map[] = {
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{ "auto", MFX_IMPL_AUTO },
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{ "sw", MFX_IMPL_SOFTWARE },
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{ "hw", MFX_IMPL_HARDWARE },
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{ "auto_any", MFX_IMPL_AUTO_ANY },
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{ "hw_any", MFX_IMPL_HARDWARE_ANY },
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{ "hw2", MFX_IMPL_HARDWARE2 },
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{ "hw3", MFX_IMPL_HARDWARE3 },
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{ "hw4", MFX_IMPL_HARDWARE4 },
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};
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mfxIMPL impl = MFX_IMPL_AUTO_ANY;
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int i;
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if (ist->hwaccel_device) {
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for (i = 0; i < FF_ARRAY_ELEMS(impl_map); i++)
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if (!strcmp(ist->hwaccel_device, impl_map[i].name)) {
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impl = impl_map[i].impl;
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break;
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}
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if (i == FF_ARRAY_ELEMS(impl_map))
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impl = strtol(ist->hwaccel_device, NULL, 0);
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}
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return impl;
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}
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int qsv_transcode_init(OutputStream *ost)
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{
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InputStream *ist;
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const enum AVPixelFormat *pix_fmt;
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AVDictionaryEntry *e;
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const AVOption *opt;
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int flags = 0;
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int err, i;
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QSVContext *qsv = NULL;
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AVQSVContext *hwctx = NULL;
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mfxIMPL impl;
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mfxVersion ver = { { 3, 1 } };
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AVBufferRef *encode_frames_ref = NULL;
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AVHWFramesContext *encode_frames;
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AVQSVFramesContext *qsv_frames;
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/* check if the encoder supports QSV */
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if (!ost->enc->pix_fmts)
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@ -225,43 +134,45 @@ int qsv_transcode_init(OutputStream *ost)
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av_log(NULL, AV_LOG_VERBOSE, "Setting up QSV transcoding\n");
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qsv = av_mallocz(sizeof(*qsv));
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hwctx = av_qsv_alloc_context();
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if (!qsv || !hwctx)
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goto fail;
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impl = choose_implementation(ist);
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err = MFXInit(impl, &ver, &qsv->session);
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if (err != MFX_ERR_NONE) {
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av_log(NULL, AV_LOG_ERROR, "Error initializing an MFX session: %d\n", err);
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goto fail;
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if (!hw_device_ctx) {
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err = qsv_device_init(ist);
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if (err < 0)
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goto fail;
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}
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e = av_dict_get(ost->encoder_opts, "flags", NULL, 0);
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opt = av_opt_find(ost->enc_ctx, "flags", NULL, 0, 0);
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if (e && opt)
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av_opt_eval_flags(ost->enc_ctx, opt, e->value, &flags);
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// This creates a dummy hw_frames_ctx for the encoder to be
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// suitably initialised. It only contains one real frame, so
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// hopefully doesn't waste too much memory.
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qsv->ost = ost;
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encode_frames_ref = av_hwframe_ctx_alloc(hw_device_ctx);
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if (!encode_frames_ref) {
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err = AVERROR(ENOMEM);
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goto fail;
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}
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encode_frames = (AVHWFramesContext*)encode_frames_ref->data;
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qsv_frames = encode_frames->hwctx;
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hwctx->session = qsv->session;
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hwctx->iopattern = MFX_IOPATTERN_IN_OPAQUE_MEMORY;
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hwctx->opaque_alloc = 1;
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hwctx->nb_opaque_surfaces = 16;
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encode_frames->width = FFALIGN(ist->resample_width, 32);
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encode_frames->height = FFALIGN(ist->resample_height, 32);
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encode_frames->format = AV_PIX_FMT_QSV;
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encode_frames->sw_format = AV_PIX_FMT_NV12;
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encode_frames->initial_pool_size = 1;
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ost->hwaccel_ctx = qsv;
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ost->enc_ctx->hwaccel_context = hwctx;
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ost->enc_ctx->pix_fmt = AV_PIX_FMT_QSV;
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qsv_frames->frame_type = MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET;
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ist->hwaccel_ctx = qsv;
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ist->dec_ctx->pix_fmt = AV_PIX_FMT_QSV;
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ist->resample_pix_fmt = AV_PIX_FMT_QSV;
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err = av_hwframe_ctx_init(encode_frames_ref);
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if (err < 0)
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goto fail;
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ist->dec_ctx->pix_fmt = AV_PIX_FMT_QSV;
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ist->resample_pix_fmt = AV_PIX_FMT_QSV;
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ost->enc_ctx->pix_fmt = AV_PIX_FMT_QSV;
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ost->enc_ctx->hw_frames_ctx = encode_frames_ref;
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return 0;
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fail:
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av_freep(&hwctx);
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av_freep(&qsv);
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return AVERROR_UNKNOWN;
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av_buffer_unref(&encode_frames_ref);
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return err;
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}
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