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Release 4 (by relup.sh)
[packages/ffmpeg.git] / v4l2-request-hwdec.patch
CommitLineData
80105e83
JP		 1From 5e154b0357829007566930846f880b9f5fb404d9 Mon Sep 17 00:00:00 2001
2From: Jonas Karlman <jonas@kwiboo.se>
3Date: Mon, 3 Dec 2018 23:48:04 +0100
4Subject: [PATCH] avutil: add av_buffer_pool_flush()
5
6Used by V4L2 request API hwaccel
7
8Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
9---
10 libavutil/buffer.c | 13 +++++++++++++
11 libavutil/buffer.h | 5 +++++
12 2 files changed, 18 insertions(+)
13
14diff --git a/libavutil/buffer.c b/libavutil/buffer.c
15index 38a554208a90..b0fedabc3e7d 100644
16--- a/libavutil/buffer.c
17+++ b/libavutil/buffer.c
18@@ -273,6 +273,19 @@ static void buffer_pool_free(AVBufferPool *pool)
19 av_freep(&pool);
20 }
21
22+void av_buffer_pool_flush(AVBufferPool *pool)
23+{
24+ ff_mutex_lock(&pool->mutex);
25+ while (pool->pool) {
26+ BufferPoolEntry *buf = pool->pool;
27+ pool->pool = buf->next;
28+
29+ buf->free(buf->opaque, buf->data);
30+ av_freep(&buf);
31+ }
32+ ff_mutex_unlock(&pool->mutex);
33+}
34+
35 void av_buffer_pool_uninit(AVBufferPool **ppool)
36 {
37 AVBufferPool *pool;
38diff --git a/libavutil/buffer.h b/libavutil/buffer.h
39index c0f3f6cc9abe..998beec9ac5b 100644
40--- a/libavutil/buffer.h
41+++ b/libavutil/buffer.h
42@@ -267,6 +267,11 @@ AVBufferPool *av_buffer_pool_init2(int size, void *opaque,
60ce8543 43 #endif
80105e83
JP		 44 void (*pool_free)(void *opaque));
45
46+/**
47+ * Free all available buffers in a buffer pool.
48+ */
49+ void av_buffer_pool_flush(AVBufferPool *pool);
50+
51 /**
52 * Mark the pool as being available for freeing. It will actually be freed only
53 * once all the allocated buffers associated with the pool are released. Thus it
54From 01319970d90ffd3c073b054a3d2e4784f6ebea0d Mon Sep 17 00:00:00 2001
55From: Jonas Karlman <jonas@kwiboo.se>
56Date: Sat, 15 Dec 2018 22:32:16 +0100
57Subject: [PATCH] Add common V4L2 request API code
58
59Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
60---
61 configure | 12 +
62 libavcodec/Makefile | 1 +
63 libavcodec/hwconfig.h | 2 +
64 libavcodec/v4l2_request.c | 984 ++++++++++++++++++++++++++++++++++++++
65 libavcodec/v4l2_request.h | 77 +++
66 5 files changed, 1076 insertions(+)
67 create mode 100644 libavcodec/v4l2_request.c
68 create mode 100644 libavcodec/v4l2_request.h
69
70diff --git a/configure b/configure
71index 8569a60bf827..9f9909a23696 100755
72--- a/configure
73+++ b/configure
74@@ -274,6 +274,7 @@ External library support:
75 --enable-libtls enable LibreSSL (via libtls), needed for https support
76 if openssl, gnutls or mbedtls is not used [no]
77 --enable-libtwolame enable MP2 encoding via libtwolame [no]
78+ --enable-libudev enable libudev [no]
60ce8543 79 --enable-libuavs3d enable AVS3 decoding via libuavs3d [no]
80105e83
JP		 80 --enable-libv4l2 enable libv4l2/v4l-utils [no]
81 --enable-libvidstab enable video stabilization using vid.stab [no]
80105e83
JP		 82@@ -342,6 +343,7 @@ External library support:
83 --enable-omx-rpi enable OpenMAX IL code for Raspberry Pi [no]
84 --enable-rkmpp enable Rockchip Media Process Platform code [no]
85 --disable-v4l2-m2m disable V4L2 mem2mem code [autodetect]
86+ --enable-v4l2-request enable V4L2 request API code [no]
87 --disable-vaapi disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
88 --disable-vdpau disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
89 --disable-videotoolbox disable VideoToolbox code [autodetect]
90@@ -1807,6 +1809,7 @@ EXTERNAL_LIBRARY_LIST="
91 libtesseract
92 libtheora
93 libtwolame
94+ libudev
60ce8543 95 libuavs3d
80105e83 96 libv4l2
60ce8543 97 libvmaf
80105e83
JP		 98@@ -1861,6 +1864,7 @@ HWACCEL_LIBRARY_LIST="
99 mmal
100 omx
101 opencl
102+ v4l2_request
103 vulkan
104 "
105
106@@ -2903,6 +2907,7 @@ d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
107 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
108 ffnvcodec_deps_any="libdl LoadLibrary"
109 nvdec_deps="ffnvcodec"
110+v4l2_request_deps="linux_videodev2_h linux_media_h v4l2_timeval_to_ns libdrm libudev"
111 vaapi_x11_deps="xlib"
112 videotoolbox_hwaccel_deps="videotoolbox pthreads"
113 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
114@@ -6376,6 +6381,7 @@ enabled libtls && require_pkg_config libtls libtls tls.h tls_configur
115 enabled libtwolame && require libtwolame twolame.h twolame_init -ltwolame &&
116 { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
117 die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
118+enabled libudev && require_pkg_config libudev libudev libudev.h udev_new
60ce8543 119 enabled libuavs3d && require_pkg_config libuavs3d "uavs3d >= 1.1.41" uavs3d.h uavs3d_decode
80105e83
JP		 120 enabled libv4l2 && require_pkg_config libv4l2 libv4l2 libv4l2.h v4l2_ioctl
121 enabled libvidstab && require_pkg_config libvidstab "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
80105e83
JP		 122@@ -6475,6 +6481,10 @@ enabled rkmpp && { require_pkg_config rkmpp rockchip_mpp rockchip/r
123 { enabled libdrm ||
124 die "ERROR: rkmpp requires --enable-libdrm"; }
125 }
126+enabled v4l2_request && { enabled libdrm ||
127+ die "ERROR: v4l2-request requires --enable-libdrm"; } &&
128+ { enabled libudev ||
129+ die "ERROR: v4l2-request requires --enable-libudev"; }
130 enabled vapoursynth && require_pkg_config vapoursynth "vapoursynth-script >= 42" VSScript.h vsscript_init
131
132
133@@ -6556,6 +6566,8 @@ if enabled v4l2_m2m; then
134 check_cc vp9_v4l2_m2m linux/videodev2.h "int i = V4L2_PIX_FMT_VP9;"
135 fi
136
137+check_func_headers "linux/media.h linux/videodev2.h" v4l2_timeval_to_ns
138+
139 check_headers sys/videoio.h
140 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
141
142diff --git a/libavcodec/Makefile b/libavcodec/Makefile
143index 5a6ea59715af..d74220516826 100644
144--- a/libavcodec/Makefile
145+++ b/libavcodec/Makefile
146@@ -153,6 +153,7 @@ OBJS-$(CONFIG_VP3DSP) += vp3dsp.o
147 OBJS-$(CONFIG_VP56DSP) += vp56dsp.o
148 OBJS-$(CONFIG_VP8DSP) += vp8dsp.o
149 OBJS-$(CONFIG_V4L2_M2M) += v4l2_m2m.o v4l2_context.o v4l2_buffers.o v4l2_fmt.o
150+OBJS-$(CONFIG_V4L2_REQUEST) += v4l2_request.o
151 OBJS-$(CONFIG_WMA_FREQS) += wma_freqs.o
152 OBJS-$(CONFIG_WMV2DSP) += wmv2dsp.o
153
154diff --git a/libavcodec/hwconfig.h b/libavcodec/hwconfig.h
155index f421dc909f44..ee78d8ab8e89 100644
156--- a/libavcodec/hwconfig.h
157+++ b/libavcodec/hwconfig.h
158@@ -80,6 +80,8 @@ typedef struct AVCodecHWConfigInternal {
159 HW_CONFIG_HWACCEL(0, 0, 1, D3D11VA_VLD, NONE, ff_ ## codec ## _d3d11va_hwaccel)
160 #define HWACCEL_XVMC(codec) \
161 HW_CONFIG_HWACCEL(0, 0, 1, XVMC, NONE, ff_ ## codec ## _xvmc_hwaccel)
162+#define HWACCEL_V4L2REQUEST(codec) \
163+ HW_CONFIG_HWACCEL(1, 0, 0, DRM_PRIME, DRM, ff_ ## codec ## _v4l2request_hwaccel)
164
165 #define HW_CONFIG_ENCODER(device, frames, ad_hoc, format, device_type_) \
166 &(const AVCodecHWConfigInternal) { \
167diff --git a/libavcodec/v4l2_request.c b/libavcodec/v4l2_request.c
168new file mode 100644
169index 000000000000..5234b5049b0d
170--- /dev/null
171+++ b/libavcodec/v4l2_request.c
172@@ -0,0 +1,984 @@
173+/*
174+ * This file is part of FFmpeg.
175+ *
176+ * FFmpeg is free software; you can redistribute it and/or
177+ * modify it under the terms of the GNU Lesser General Public
178+ * License as published by the Free Software Foundation; either
179+ * version 2.1 of the License, or (at your option) any later version.
180+ *
181+ * FFmpeg is distributed in the hope that it will be useful,
182+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
183+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
184+ * Lesser General Public License for more details.
185+ *
186+ * You should have received a copy of the GNU Lesser General Public
187+ * License along with FFmpeg; if not, write to the Free Software
188+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
189+ */
190+
191+#include <drm_fourcc.h>
192+#include <linux/media.h>
193+#include <sys/mman.h>
194+#include <sys/types.h>
195+#include <sys/stat.h>
196+#include <fcntl.h>
197+
198+#include <sys/sysmacros.h>
199+#include <libudev.h>
200+
201+#include "decode.h"
202+#include "internal.h"
203+#include "v4l2_request.h"
204+
205+uint64_t ff_v4l2_request_get_capture_timestamp(AVFrame *frame)
206+{
207+ V4L2RequestDescriptor *req = (V4L2RequestDescriptor*)frame->data[0];
208+ return req ? v4l2_timeval_to_ns(&req->capture.buffer.timestamp) : 0;
209+}
210+
211+int ff_v4l2_request_reset_frame(AVCodecContext *avctx, AVFrame *frame)
212+{
213+ V4L2RequestDescriptor *req = (V4L2RequestDescriptor*)frame->data[0];
214+ memset(&req->drm, 0, sizeof(AVDRMFrameDescriptor));
215+ req->output.used = 0;
216+ return 0;
217+}
218+
219+int ff_v4l2_request_append_output_buffer(AVCodecContext *avctx, AVFrame *frame, const uint8_t *data, uint32_t size)
220+{
221+ V4L2RequestDescriptor *req = (V4L2RequestDescriptor*)frame->data[0];
222+ if (req->output.used + size + (AV_INPUT_BUFFER_PADDING_SIZE * 4) <= req->output.size) {
223+ memcpy(req->output.addr + req->output.used, data, size);
224+ req->output.used += size;
225+ } else {
226+ av_log(avctx, AV_LOG_ERROR, "%s: output.used=%u output.size=%u size=%u\n", __func__, req->output.used, req->output.size, size);
227+ }
228+ return 0;
229+}
230+
231+static int v4l2_request_controls(V4L2RequestContext *ctx, int request_fd, unsigned long type, struct v4l2_ext_control *control, int count)
232+{
233+ struct v4l2_ext_controls controls = {
234+ .controls = control,
235+ .count = count,
236+ .request_fd = request_fd,
237+ .which = (request_fd >= 0) ? V4L2_CTRL_WHICH_REQUEST_VAL : 0,
238+ };
239+
240+ if (!control || !count)
241+ return 0;
242+
243+ return ioctl(ctx->video_fd, type, &controls);
244+}
245+
246+static int v4l2_request_set_controls(V4L2RequestContext *ctx, int request_fd, struct v4l2_ext_control *control, int count)
247+{
248+ return v4l2_request_controls(ctx, request_fd, VIDIOC_S_EXT_CTRLS, control, count);
249+}
250+
251+int ff_v4l2_request_set_controls(AVCodecContext *avctx, struct v4l2_ext_control *control, int count)
252+{
253+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
254+ int ret;
255+
256+ ret = v4l2_request_controls(ctx, -1, VIDIOC_S_EXT_CTRLS, control, count);
257+ if (ret < 0) {
258+ av_log(avctx, AV_LOG_ERROR, "%s: set controls failed, %s (%d)\n", __func__, strerror(errno), errno);
259+ return AVERROR(EINVAL);
260+ }
261+
262+ return ret;
263+}
264+
265+int ff_v4l2_request_get_controls(AVCodecContext *avctx, struct v4l2_ext_control *control, int count)
266+{
267+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
268+ int ret;
269+
270+ ret = v4l2_request_controls(ctx, -1, VIDIOC_G_EXT_CTRLS, control, count);
271+ if (ret < 0) {
272+ av_log(avctx, AV_LOG_ERROR, "%s: get controls failed, %s (%d)\n", __func__, strerror(errno), errno);
273+ return AVERROR(EINVAL);
274+ }
275+
276+ return ret;
277+}
278+
279+int ff_v4l2_request_query_control(AVCodecContext *avctx, struct v4l2_query_ext_ctrl *control)
280+{
281+ int ret;
282+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
283+
284+ ret = ioctl(ctx->video_fd, VIDIOC_QUERY_EXT_CTRL, control);
285+ if (ret < 0) {
286+ av_log(avctx, AV_LOG_ERROR, "%s: query control failed, %s (%d)\n", __func__, strerror(errno), errno);
287+ return AVERROR(EINVAL);
288+ }
289+
290+ return 0;
291+}
292+
293+int ff_v4l2_request_query_control_default_value(AVCodecContext *avctx, uint32_t id)
294+{
295+ int ret;
296+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
297+ struct v4l2_queryctrl control = {
298+ .id = id,
299+ };
300+
301+ ret = ioctl(ctx->video_fd, VIDIOC_QUERYCTRL, &control);
302+ if (ret < 0) {
303+ av_log(avctx, AV_LOG_ERROR, "%s: query control failed, %s (%d)\n", __func__, strerror(errno), errno);
304+ return AVERROR(EINVAL);
305+ }
306+
307+ return control.default_value;
308+}
309+
310+static int v4l2_request_queue_buffer(V4L2RequestContext *ctx, int request_fd, V4L2RequestBuffer *buf, uint32_t flags)
311+{
312+ struct v4l2_plane planes[1] = {};
313+ struct v4l2_buffer buffer = {
314+ .type = buf->buffer.type,
315+ .memory = buf->buffer.memory,
316+ .index = buf->index,
317+ .timestamp.tv_usec = ctx->timestamp,
318+ .bytesused = buf->used,
319+ .request_fd = request_fd,
320+ .flags = ((request_fd >= 0) ? V4L2_BUF_FLAG_REQUEST_FD : 0) | flags,
321+ };
322+
323+ buf->buffer.timestamp = buffer.timestamp;
324+
325+ if (V4L2_TYPE_IS_MULTIPLANAR(buf->buffer.type)) {
326+ planes[0].bytesused = buf->used;
327+ buffer.bytesused = 0;
328+ buffer.length = 1;
329+ buffer.m.planes = planes;
330+ }
331+
332+ return ioctl(ctx->video_fd, VIDIOC_QBUF, &buffer);
333+}
334+
335+static int v4l2_request_dequeue_buffer(V4L2RequestContext *ctx, V4L2RequestBuffer *buf)
336+{
337+ int ret;
338+ struct v4l2_plane planes[1] = {};
339+ struct v4l2_buffer buffer = {
340+ .type = buf->buffer.type,
341+ .memory = buf->buffer.memory,
342+ .index = buf->index,
343+ };
344+
345+ if (V4L2_TYPE_IS_MULTIPLANAR(buf->buffer.type)) {
346+ buffer.length = 1;
347+ buffer.m.planes = planes;
348+ }
349+
350+ ret = ioctl(ctx->video_fd, VIDIOC_DQBUF, &buffer);
351+ if (ret < 0)
352+ return ret;
353+
354+ buf->buffer.timestamp = buffer.timestamp;
355+ return 0;
356+}
357+
358+const uint32_t v4l2_request_capture_pixelformats[] = {
359+ V4L2_PIX_FMT_NV12,
360+#ifdef DRM_FORMAT_MOD_ALLWINNER_TILED
361+ V4L2_PIX_FMT_SUNXI_TILED_NV12,
362+#endif
363+};
364+
365+static int v4l2_request_set_drm_descriptor(V4L2RequestDescriptor *req, struct v4l2_format *format)
366+{
367+ AVDRMFrameDescriptor *desc = &req->drm;
368+ AVDRMLayerDescriptor *layer = &desc->layers[0];
369+ uint32_t pixelformat = V4L2_TYPE_IS_MULTIPLANAR(format->type) ? format->fmt.pix_mp.pixelformat : format->fmt.pix.pixelformat;
370+
371+ switch (pixelformat) {
372+ case V4L2_PIX_FMT_NV12:
373+ layer->format = DRM_FORMAT_NV12;
374+ desc->objects[0].format_modifier = DRM_FORMAT_MOD_LINEAR;
375+ break;
376+#ifdef DRM_FORMAT_MOD_ALLWINNER_TILED
377+ case V4L2_PIX_FMT_SUNXI_TILED_NV12:
378+ layer->format = DRM_FORMAT_NV12;
379+ desc->objects[0].format_modifier = DRM_FORMAT_MOD_ALLWINNER_TILED;
380+ break;
381+#endif
382+ default:
383+ return -1;
384+ }
385+
386+ desc->nb_objects = 1;
387+ desc->objects[0].fd = req->capture.fd;
388+ desc->objects[0].size = req->capture.size;
389+
390+ desc->nb_layers = 1;
391+ layer->nb_planes = 2;
392+
393+ layer->planes[0].object_index = 0;
394+ layer->planes[0].offset = 0;
395+ layer->planes[0].pitch = V4L2_TYPE_IS_MULTIPLANAR(format->type) ? format->fmt.pix_mp.plane_fmt[0].bytesperline : format->fmt.pix.bytesperline;
396+
397+ layer->planes[1].object_index = 0;
398+ layer->planes[1].offset = layer->planes[0].pitch * (V4L2_TYPE_IS_MULTIPLANAR(format->type) ? format->fmt.pix_mp.height : format->fmt.pix.height);
399+ layer->planes[1].pitch = layer->planes[0].pitch;
400+
401+ return 0;
402+}
403+
404+static int v4l2_request_queue_decode(AVCodecContext *avctx, AVFrame *frame, struct v4l2_ext_control *control, int count, int first_slice, int last_slice)
405+{
406+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
407+ V4L2RequestDescriptor *req = (V4L2RequestDescriptor*)frame->data[0];
408+ struct timeval tv = { 2, 0 };
409+ fd_set except_fds;
410+ int ret;
411+
412+ av_log(avctx, AV_LOG_DEBUG, "%s: avctx=%p used=%u controls=%d index=%d fd=%d request_fd=%d first_slice=%d last_slice=%d\n", __func__, avctx, req->output.used, count, req->capture.index, req->capture.fd, req->request_fd, first_slice, last_slice);
413+
414+ if (first_slice)
415+ ctx->timestamp++;
416+
417+ ret = v4l2_request_set_controls(ctx, req->request_fd, control, count);
418+ if (ret < 0) {
419+ av_log(avctx, AV_LOG_ERROR, "%s: set controls failed for request %d, %s (%d)\n", __func__, req->request_fd, strerror(errno), errno);
420+ return -1;
421+ }
422+
423+ memset(req->output.addr + req->output.used, 0, AV_INPUT_BUFFER_PADDING_SIZE * 4);
424+
425+ ret = v4l2_request_queue_buffer(ctx, req->request_fd, &req->output, last_slice ? 0 : V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF);
426+ if (ret < 0) {
427+ av_log(avctx, AV_LOG_ERROR, "%s: queue output buffer %d failed for request %d, %s (%d)\n", __func__, req->output.index, req->request_fd, strerror(errno), errno);
428+ return -1;
429+ }
430+
431+ if (first_slice) {
432+ ret = v4l2_request_queue_buffer(ctx, -1, &req->capture, 0);
433+ if (ret < 0) {
434+ av_log(avctx, AV_LOG_ERROR, "%s: queue capture buffer %d failed for request %d, %s (%d)\n", __func__, req->capture.index, req->request_fd, strerror(errno), errno);
435+ return -1;
436+ }
437+ }
438+
439+ // NOTE: do we need to dequeue when request fails/timeout?
440+
441+ // 4. queue request and wait
442+ ret = ioctl(req->request_fd, MEDIA_REQUEST_IOC_QUEUE, NULL);
443+ if (ret < 0) {
444+ av_log(avctx, AV_LOG_ERROR, "%s: queue request %d failed, %s (%d)\n", __func__, req->request_fd, strerror(errno), errno);
445+ goto fail;
446+ }
447+
448+ FD_ZERO(&except_fds);
449+ FD_SET(req->request_fd, &except_fds);
450+
451+ ret = select(req->request_fd + 1, NULL, NULL, &except_fds, &tv);
452+ if (ret == 0) {
453+ av_log(avctx, AV_LOG_ERROR, "%s: request %d timeout\n", __func__, req->request_fd);
454+ goto fail;
455+ } else if (ret < 0) {
456+ av_log(avctx, AV_LOG_ERROR, "%s: select request %d failed, %s (%d)\n", __func__, req->request_fd, strerror(errno), errno);
457+ goto fail;
458+ }
459+
460+ ret = v4l2_request_dequeue_buffer(ctx, &req->output);
461+ if (ret < 0) {
462+ av_log(avctx, AV_LOG_ERROR, "%s: dequeue output buffer %d failed for request %d, %s (%d)\n", __func__, req->output.index, req->request_fd, strerror(errno), errno);
463+ return -1;
464+ }
465+
466+ if (last_slice) {
467+ ret = v4l2_request_dequeue_buffer(ctx, &req->capture);
468+ if (ret < 0) {
469+ av_log(avctx, AV_LOG_ERROR, "%s: dequeue capture buffer %d failed for request %d, %s (%d)\n", __func__, req->capture.index, req->request_fd, strerror(errno), errno);
470+ return -1;
471+ }
472+ }
473+
474+ // TODO: check errors
475+ // buffer.flags & V4L2_BUF_FLAG_ERROR
476+
477+ ret = ioctl(req->request_fd, MEDIA_REQUEST_IOC_REINIT, NULL);
478+ if (ret < 0) {
479+ av_log(avctx, AV_LOG_ERROR, "%s: reinit request %d failed, %s (%d)\n", __func__, req->request_fd, strerror(errno), errno);
480+ return -1;
481+ }
482+
483+ if (last_slice)
484+ return v4l2_request_set_drm_descriptor(req, &ctx->format);
485+
486+ return 0;
487+
488+fail:
489+ ret = v4l2_request_dequeue_buffer(ctx, &req->output);
490+ if (ret < 0)
491+ av_log(avctx, AV_LOG_ERROR, "%s: dequeue output buffer %d failed for request %d, %s (%d)\n", __func__, req->output.index, req->request_fd, strerror(errno), errno);
492+
493+ ret = v4l2_request_dequeue_buffer(ctx, &req->capture);
494+ if (ret < 0)
495+ av_log(avctx, AV_LOG_ERROR, "%s: dequeue capture buffer %d failed for request %d, %s (%d)\n", __func__, req->capture.index, req->request_fd, strerror(errno), errno);
496+
497+ ret = ioctl(req->request_fd, MEDIA_REQUEST_IOC_REINIT, NULL);
498+ if (ret < 0)
499+ av_log(avctx, AV_LOG_ERROR, "%s: reinit request %d failed, %s (%d)\n", __func__, req->request_fd, strerror(errno), errno);
500+
501+ return -1;
502+}
503+
504+int ff_v4l2_request_decode_slice(AVCodecContext *avctx, AVFrame *frame, struct v4l2_ext_control *control, int count, int first_slice, int last_slice)
505+{
506+ V4L2RequestDescriptor *req = (V4L2RequestDescriptor*)frame->data[0];
507+
508+ // fall back to queue each slice as a full frame
509+ if ((req->output.capabilities & V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF) != V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF)
510+ return v4l2_request_queue_decode(avctx, frame, control, count, 1, 1);
511+
512+ return v4l2_request_queue_decode(avctx, frame, control, count, first_slice, last_slice);
513+}
514+
515+int ff_v4l2_request_decode_frame(AVCodecContext *avctx, AVFrame *frame, struct v4l2_ext_control *control, int count)
516+{
517+ return v4l2_request_queue_decode(avctx, frame, control, count, 1, 1);
518+}
519+
520+static int v4l2_request_try_format(AVCodecContext *avctx, enum v4l2_buf_type type, uint32_t pixelformat)
521+{
522+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
523+ struct v4l2_fmtdesc fmtdesc = {
524+ .index = 0,
525+ .type = type,
526+ };
527+
528+ if (V4L2_TYPE_IS_OUTPUT(type)) {
529+ struct v4l2_create_buffers buffers = {
530+ .count = 0,
531+ .memory = V4L2_MEMORY_MMAP,
532+ .format.type = type,
533+ };
534+
535+ if (ioctl(ctx->video_fd, VIDIOC_CREATE_BUFS, &buffers) < 0) {
536+ av_log(avctx, AV_LOG_ERROR, "%s: create buffers failed for type %u, %s (%d)\n", __func__, type, strerror(errno), errno);
537+ return -1;
538+ }
539+
540+ if ((buffers.capabilities & V4L2_BUF_CAP_SUPPORTS_REQUESTS) != V4L2_BUF_CAP_SUPPORTS_REQUESTS) {
541+ av_log(avctx, AV_LOG_INFO, "%s: output buffer type do not support requests, capabilities %u\n", __func__, buffers.capabilities);
542+ return -1;
543+ }
544+ }
545+
546+ while (ioctl(ctx->video_fd, VIDIOC_ENUM_FMT, &fmtdesc) >= 0) {
547+ if (fmtdesc.pixelformat == pixelformat)
548+ return 0;
549+
550+ fmtdesc.index++;
551+ }
552+
553+ av_log(avctx, AV_LOG_INFO, "%s: pixelformat %u not supported for type %u\n", __func__, pixelformat, type);
554+ return -1;
555+}
556+
557+static int v4l2_request_set_format(AVCodecContext *avctx, enum v4l2_buf_type type, uint32_t pixelformat, uint32_t buffersize)
558+{
559+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
560+ struct v4l2_format format = {
561+ .type = type,
562+ };
563+
564+ if (V4L2_TYPE_IS_MULTIPLANAR(type)) {
565+ format.fmt.pix_mp.width = avctx->coded_width;
566+ format.fmt.pix_mp.height = avctx->coded_height;
567+ format.fmt.pix_mp.pixelformat = pixelformat;
568+ format.fmt.pix_mp.plane_fmt[0].sizeimage = buffersize;
569+ format.fmt.pix_mp.num_planes = 1;
570+ } else {
571+ format.fmt.pix.width = avctx->coded_width;
572+ format.fmt.pix.height = avctx->coded_height;
573+ format.fmt.pix.pixelformat = pixelformat;
574+ format.fmt.pix.sizeimage = buffersize;
575+ }
576+
577+ return ioctl(ctx->video_fd, VIDIOC_S_FMT, &format);
578+}
579+
580+static int v4l2_request_select_capture_format(AVCodecContext *avctx)
581+{
582+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
583+ enum v4l2_buf_type type = ctx->format.type;
584+
585+#if 0
586+ struct v4l2_format format = {
587+ .type = type,
588+ };
589+ struct v4l2_fmtdesc fmtdesc = {
590+ .index = 0,
591+ .type = type,
592+ };
593+ uint32_t pixelformat;
594+ int i;
595+
596+ if (ioctl(ctx->video_fd, VIDIOC_G_FMT, &format) < 0) {
597+ av_log(avctx, AV_LOG_ERROR, "%s: get capture format failed, %s (%d)\n", __func__, strerror(errno), errno);
598+ return -1;
599+ }
600+
601+ pixelformat = V4L2_TYPE_IS_MULTIPLANAR(type) ? format.fmt.pix_mp.pixelformat : format.fmt.pix.pixelformat;
602+
603+ for (i = 0; i < FF_ARRAY_ELEMS(v4l2_request_capture_pixelformats); i++) {
604+ if (pixelformat == v4l2_request_capture_pixelformats[i])
605+ return v4l2_request_set_format(avctx, type, pixelformat, 0);
606+ }
607+
608+ while (ioctl(ctx->video_fd, VIDIOC_ENUM_FMT, &fmtdesc) >= 0) {
609+ for (i = 0; i < FF_ARRAY_ELEMS(v4l2_request_capture_pixelformats); i++) {
610+ if (fmtdesc.pixelformat == v4l2_request_capture_pixelformats[i])
611+ return v4l2_request_set_format(avctx, type, fmtdesc.pixelformat, 0);
612+ }
613+
614+ fmtdesc.index++;
615+ }
616+#else
617+ for (int i = 0; i < FF_ARRAY_ELEMS(v4l2_request_capture_pixelformats); i++) {
618+ uint32_t pixelformat = v4l2_request_capture_pixelformats[i];
619+ if (!v4l2_request_try_format(avctx, type, pixelformat))
620+ return v4l2_request_set_format(avctx, type, pixelformat, 0);
621+ }
622+#endif
623+
624+ return -1;
625+}
626+
627+static int v4l2_request_probe_video_device(struct udev_device *device, AVCodecContext *avctx, uint32_t pixelformat, uint32_t buffersize, struct v4l2_ext_control *control, int count)
628+{
629+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
630+ int ret = AVERROR(EINVAL);
631+ struct v4l2_capability capability = {0};
632+ unsigned int capabilities = 0;
633+
634+ const char *path = udev_device_get_devnode(device);
635+ if (!path) {
636+ av_log(avctx, AV_LOG_ERROR, "%s: get video device devnode failed\n", __func__);
637+ ret = AVERROR(EINVAL);
638+ goto fail;
639+ }
640+
641+ ctx->video_fd = open(path, O_RDWR | O_NONBLOCK, 0);
642+ if (ctx->video_fd < 0) {
643+ av_log(avctx, AV_LOG_ERROR, "%s: opening %s failed, %s (%d)\n", __func__, path, strerror(errno), errno);
644+ ret = AVERROR(EINVAL);
645+ goto fail;
646+ }
647+
648+ ret = ioctl(ctx->video_fd, VIDIOC_QUERYCAP, &capability);
649+ if (ret < 0) {
650+ av_log(avctx, AV_LOG_ERROR, "%s: get video capability failed, %s (%d)\n", __func__, strerror(errno), errno);
651+ ret = AVERROR(EINVAL);
652+ goto fail;
653+ }
654+
655+ if (capability.capabilities & V4L2_CAP_DEVICE_CAPS)
656+ capabilities = capability.device_caps;
657+ else
658+ capabilities = capability.capabilities;
659+
660+ av_log(avctx, AV_LOG_DEBUG, "%s: avctx=%p ctx=%p path=%s capabilities=%u\n", __func__, avctx, ctx, path, capabilities);
661+
662+ if ((capabilities & V4L2_CAP_STREAMING) != V4L2_CAP_STREAMING) {
663+ av_log(avctx, AV_LOG_ERROR, "%s: missing required streaming capability\n", __func__);
664+ ret = AVERROR(EINVAL);
665+ goto fail;
666+ }
667+
668+ if ((capabilities & V4L2_CAP_VIDEO_M2M_MPLANE) == V4L2_CAP_VIDEO_M2M_MPLANE) {
669+ ctx->output_type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
670+ ctx->format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
671+ } else if ((capabilities & V4L2_CAP_VIDEO_M2M) == V4L2_CAP_VIDEO_M2M) {
672+ ctx->output_type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
673+ ctx->format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
674+ } else {
675+ av_log(avctx, AV_LOG_ERROR, "%s: missing required mem2mem capability\n", __func__);
676+ ret = AVERROR(EINVAL);
677+ goto fail;
678+ }
679+
680+ ret = v4l2_request_try_format(avctx, ctx->output_type, pixelformat);
681+ if (ret < 0) {
682+ av_log(avctx, AV_LOG_WARNING, "%s: try output format failed\n", __func__);
683+ ret = AVERROR(EINVAL);
684+ goto fail;
685+ }
686+
687+ ret = v4l2_request_set_format(avctx, ctx->output_type, pixelformat, buffersize);
688+ if (ret < 0) {
689+ av_log(avctx, AV_LOG_ERROR, "%s: set output format failed, %s (%d)\n", __func__, strerror(errno), errno);
690+ ret = AVERROR(EINVAL);
691+ goto fail;
692+ }
693+
694+ ret = v4l2_request_set_controls(ctx, -1, control, count);
695+ if (ret < 0) {
696+ av_log(avctx, AV_LOG_ERROR, "%s: set controls failed, %s (%d)\n", __func__, strerror(errno), errno);
697+ ret = AVERROR(EINVAL);
698+ goto fail;
699+ }
700+
701+ ret = v4l2_request_select_capture_format(avctx);
702+ if (ret < 0) {
703+ av_log(avctx, AV_LOG_WARNING, "%s: select capture format failed\n", __func__);
704+ ret = AVERROR(EINVAL);
705+ goto fail;
706+ }
707+
708+ return 0;
709+
710+fail:
711+ if (ctx->video_fd >= 0) {
712+ close(ctx->video_fd);
713+ ctx->video_fd = -1;
714+ }
715+ return ret;
716+}
717+
718+static int v4l2_request_init_context(AVCodecContext *avctx)
719+{
720+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
721+ int ret;
722+
723+ ret = ioctl(ctx->video_fd, VIDIOC_G_FMT, &ctx->format);
724+ if (ret < 0) {
725+ av_log(avctx, AV_LOG_ERROR, "%s: get capture format failed, %s (%d)\n", __func__, strerror(errno), errno);
726+ ret = AVERROR(EINVAL);
727+ goto fail;
728+ }
729+
730+ if (V4L2_TYPE_IS_MULTIPLANAR(ctx->format.type)) {
731+ av_log(avctx, AV_LOG_DEBUG, "%s: pixelformat=%d width=%u height=%u bytesperline=%u sizeimage=%u num_planes=%u\n", __func__, ctx->format.fmt.pix_mp.pixelformat, ctx->format.fmt.pix_mp.width, ctx->format.fmt.pix_mp.height, ctx->format.fmt.pix_mp.plane_fmt[0].bytesperline, ctx->format.fmt.pix_mp.plane_fmt[0].sizeimage, ctx->format.fmt.pix_mp.num_planes);
732+ } else {
733+ av_log(avctx, AV_LOG_DEBUG, "%s: pixelformat=%d width=%u height=%u bytesperline=%u sizeimage=%u\n", __func__, ctx->format.fmt.pix.pixelformat, ctx->format.fmt.pix.width, ctx->format.fmt.pix.height, ctx->format.fmt.pix.bytesperline, ctx->format.fmt.pix.sizeimage);
734+ }
735+
736+ ret = ff_decode_get_hw_frames_ctx(avctx, AV_HWDEVICE_TYPE_DRM);
737+ if (ret < 0)
738+ goto fail;
739+
740+ ret = ioctl(ctx->video_fd, VIDIOC_STREAMON, &ctx->output_type);
741+ if (ret < 0) {
742+ av_log(avctx, AV_LOG_ERROR, "%s: output stream on failed, %s (%d)\n", __func__, strerror(errno), errno);
743+ ret = AVERROR(EINVAL);
744+ goto fail;
745+ }
746+
747+ ret = ioctl(ctx->video_fd, VIDIOC_STREAMON, &ctx->format.type);
748+ if (ret < 0) {
749+ av_log(avctx, AV_LOG_ERROR, "%s: capture stream on failed, %s (%d)\n", __func__, strerror(errno), errno);
750+ ret = AVERROR(EINVAL);
751+ goto fail;
752+ }
753+
754+ return 0;
755+
756+fail:
757+ ff_v4l2_request_uninit(avctx);
758+ return ret;
759+}
760+
761+static int v4l2_request_probe_media_device(struct udev_device *device, AVCodecContext *avctx, uint32_t pixelformat, uint32_t buffersize, struct v4l2_ext_control *control, int count)
762+{
763+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
764+ int ret;
765+ struct media_device_info device_info = {0};
766+ struct media_v2_topology topology = {0};
767+ struct media_v2_interface *interfaces = NULL;
768+ struct udev *udev = udev_device_get_udev(device);
769+ struct udev_device *video_device;
770+ dev_t devnum;
771+
772+ const char *path = udev_device_get_devnode(device);
773+ if (!path) {
774+ av_log(avctx, AV_LOG_ERROR, "%s: get media device devnode failed\n", __func__);
775+ ret = AVERROR(EINVAL);
776+ goto fail;
777+ }
778+
779+ ctx->media_fd = open(path, O_RDWR, 0);
780+ if (ctx->media_fd < 0) {
781+ av_log(avctx, AV_LOG_ERROR, "%s: opening %s failed, %s (%d)\n", __func__, path, strerror(errno), errno);
782+ ret = AVERROR(EINVAL);
783+ goto fail;
784+ }
785+
786+ ret = ioctl(ctx->media_fd, MEDIA_IOC_DEVICE_INFO, &device_info);
787+ if (ret < 0) {
788+ av_log(avctx, AV_LOG_ERROR, "%s: get media device info failed, %s (%d)\n", __func__, strerror(errno), errno);
789+ ret = AVERROR(EINVAL);
790+ goto fail;
791+ }
792+
793+ av_log(avctx, AV_LOG_DEBUG, "%s: avctx=%p ctx=%p path=%s driver=%s\n", __func__, avctx, ctx, path, device_info.driver);
794+
795+ ret = ioctl(ctx->media_fd, MEDIA_IOC_G_TOPOLOGY, &topology);
796+ if (ret < 0) {
797+ av_log(avctx, AV_LOG_ERROR, "%s: get media topology failed, %s (%d)\n", __func__, strerror(errno), errno);
798+ ret = AVERROR(EINVAL);
799+ goto fail;
800+ }
801+
802+ if (topology.num_interfaces <= 0) {
803+ av_log(avctx, AV_LOG_ERROR, "%s: media device has no interfaces\n", __func__);
804+ ret = AVERROR(EINVAL);
805+ goto fail;
806+ }
807+
808+ interfaces = av_mallocz(topology.num_interfaces * sizeof(struct media_v2_interface));
809+ if (!interfaces) {
810+ av_log(avctx, AV_LOG_ERROR, "%s: allocating media interface struct failed\n", __func__);
811+ ret = AVERROR(ENOMEM);
812+ goto fail;
813+ }
814+
815+ topology.ptr_interfaces = (__u64)(uintptr_t)interfaces;
816+ ret = ioctl(ctx->media_fd, MEDIA_IOC_G_TOPOLOGY, &topology);
817+ if (ret < 0) {
818+ av_log(avctx, AV_LOG_ERROR, "%s: get media topology failed, %s (%d)\n", __func__, strerror(errno), errno);
819+ ret = AVERROR(EINVAL);
820+ goto fail;
821+ }
822+
823+ ret = AVERROR(EINVAL);
824+ for (int i = 0; i < topology.num_interfaces; i++) {
825+ if (interfaces[i].intf_type != MEDIA_INTF_T_V4L_VIDEO)
826+ continue;
827+
828+ devnum = makedev(interfaces[i].devnode.major, interfaces[i].devnode.minor);
829+ video_device = udev_device_new_from_devnum(udev, 'c', devnum);
830+ if (!video_device) {
831+ av_log(avctx, AV_LOG_ERROR, "%s: video_device=%p\n", __func__, video_device);
832+ continue;
833+ }
834+
835+ ret = v4l2_request_probe_video_device(video_device, avctx, pixelformat, buffersize, control, count);
836+ udev_device_unref(video_device);
837+
838+ if (!ret)
839+ break;
840+ }
841+
842+ av_freep(&interfaces);
843+ return ret;
844+
845+fail:
846+ av_freep(&interfaces);
847+ if (ctx->media_fd >= 0) {
848+ close(ctx->media_fd);
849+ ctx->media_fd = -1;
850+ }
851+ return ret;
852+}
853+
854+int ff_v4l2_request_init(AVCodecContext *avctx, uint32_t pixelformat, uint32_t buffersize, struct v4l2_ext_control *control, int count)
855+{
856+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
857+ int ret = AVERROR(EINVAL);
858+ struct udev *udev;
859+ struct udev_enumerate *enumerate;
860+ struct udev_list_entry *devices;
861+ struct udev_list_entry *entry;
862+ struct udev_device *device;
863+
864+ av_log(avctx, AV_LOG_DEBUG, "%s: avctx=%p hw_device_ctx=%p hw_frames_ctx=%p\n", __func__, avctx, avctx->hw_device_ctx, avctx->hw_frames_ctx);
865+
866+ ctx->media_fd = -1;
867+ ctx->video_fd = -1;
868+ ctx->timestamp = 0;
869+
870+ udev = udev_new();
871+ if (!udev) {
872+ av_log(avctx, AV_LOG_ERROR, "%s: allocating udev context failed\n", __func__);
873+ ret = AVERROR(ENOMEM);
874+ goto fail;
875+ }
876+
877+ enumerate = udev_enumerate_new(udev);
878+ if (!enumerate) {
879+ av_log(avctx, AV_LOG_ERROR, "%s: allocating udev enumerator failed\n", __func__);
880+ ret = AVERROR(ENOMEM);
881+ goto fail;
882+ }
883+
884+ udev_enumerate_add_match_subsystem(enumerate, "media");
885+ udev_enumerate_scan_devices(enumerate);
886+
887+ devices = udev_enumerate_get_list_entry(enumerate);
888+ udev_list_entry_foreach(entry, devices) {
889+ const char *path = udev_list_entry_get_name(entry);
890+ if (!path)
891+ continue;
892+
893+ device = udev_device_new_from_syspath(udev, path);
894+ if (!device)
895+ continue;
896+
897+ ret = v4l2_request_probe_media_device(device, avctx, pixelformat, buffersize, control, count);
898+ udev_device_unref(device);
899+
900+ if (!ret)
901+ break;
902+ }
903+
904+ udev_enumerate_unref(enumerate);
905+
906+ if (!ret)
907+ ret = v4l2_request_init_context(avctx);
908+
909+fail:
910+ udev_unref(udev);
911+ return ret;
912+}
913+
914+int ff_v4l2_request_uninit(AVCodecContext *avctx)
915+{
916+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
917+ int ret;
918+
919+ av_log(avctx, AV_LOG_DEBUG, "%s: avctx=%p ctx=%p\n", __func__, avctx, ctx);
920+
921+ if (ctx->video_fd >= 0) {
922+ ret = ioctl(ctx->video_fd, VIDIOC_STREAMOFF, &ctx->output_type);
923+ if (ret < 0)
924+ av_log(avctx, AV_LOG_ERROR, "%s: output stream off failed, %s (%d)\n", __func__, strerror(errno), errno);
925+
926+ ret = ioctl(ctx->video_fd, VIDIOC_STREAMOFF, &ctx->format.type);
927+ if (ret < 0)
928+ av_log(avctx, AV_LOG_ERROR, "%s: capture stream off failed, %s (%d)\n", __func__, strerror(errno), errno);
929+ }
930+
931+ if (avctx->hw_frames_ctx) {
932+ AVHWFramesContext *hwfc = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
933+ av_buffer_pool_flush(hwfc->pool);
934+ }
935+
936+ if (ctx->video_fd >= 0)
937+ close(ctx->video_fd);
938+
939+ if (ctx->media_fd >= 0)
940+ close(ctx->media_fd);
941+
942+ return 0;
943+}
944+
945+static int v4l2_request_buffer_alloc(AVCodecContext *avctx, V4L2RequestBuffer *buf, enum v4l2_buf_type type)
946+{
947+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
948+ int ret;
949+ struct v4l2_plane planes[1] = {};
950+ struct v4l2_create_buffers buffers = {
951+ .count = 1,
952+ .memory = V4L2_MEMORY_MMAP,
953+ .format.type = type,
954+ };
955+
956+ av_log(avctx, AV_LOG_DEBUG, "%s: avctx=%p buf=%p type=%u\n", __func__, avctx, buf, type);
957+
958+ ret = ioctl(ctx->video_fd, VIDIOC_G_FMT, &buffers.format);
959+ if (ret < 0) {
960+ av_log(avctx, AV_LOG_ERROR, "%s: get format failed for type %u, %s (%d)\n", __func__, type, strerror(errno), errno);
961+ return ret;
962+ }
963+
964+ if (V4L2_TYPE_IS_MULTIPLANAR(buffers.format.type)) {
965+ av_log(avctx, AV_LOG_DEBUG, "%s: pixelformat=%d width=%u height=%u bytesperline=%u sizeimage=%u num_planes=%u\n", __func__, buffers.format.fmt.pix_mp.pixelformat, buffers.format.fmt.pix_mp.width, buffers.format.fmt.pix_mp.height, buffers.format.fmt.pix_mp.plane_fmt[0].bytesperline, buffers.format.fmt.pix_mp.plane_fmt[0].sizeimage, buffers.format.fmt.pix_mp.num_planes);
966+ } else {
967+ av_log(avctx, AV_LOG_DEBUG, "%s: pixelformat=%d width=%u height=%u bytesperline=%u sizeimage=%u\n", __func__, buffers.format.fmt.pix.pixelformat, buffers.format.fmt.pix.width, buffers.format.fmt.pix.height, buffers.format.fmt.pix.bytesperline, buffers.format.fmt.pix.sizeimage);
968+ }
969+
970+ ret = ioctl(ctx->video_fd, VIDIOC_CREATE_BUFS, &buffers);
971+ if (ret < 0) {
972+ av_log(avctx, AV_LOG_ERROR, "%s: create buffers failed for type %u, %s (%d)\n", __func__, type, strerror(errno), errno);
973+ return ret;
974+ }
975+
976+ if (V4L2_TYPE_IS_MULTIPLANAR(type)) {
977+ buf->width = buffers.format.fmt.pix_mp.width;
978+ buf->height = buffers.format.fmt.pix_mp.height;
979+ buf->size = buffers.format.fmt.pix_mp.plane_fmt[0].sizeimage;
980+ buf->buffer.length = 1;
981+ buf->buffer.m.planes = planes;
982+ } else {
983+ buf->width = buffers.format.fmt.pix.width;
984+ buf->height = buffers.format.fmt.pix.height;
985+ buf->size = buffers.format.fmt.pix.sizeimage;
986+ }
987+
988+ buf->index = buffers.index;
989+ buf->capabilities = buffers.capabilities;
990+ buf->used = 0;
991+
992+ buf->buffer.type = type;
993+ buf->buffer.memory = V4L2_MEMORY_MMAP;
994+ buf->buffer.index = buf->index;
995+
996+ ret = ioctl(ctx->video_fd, VIDIOC_QUERYBUF, &buf->buffer);
997+ if (ret < 0) {
998+ av_log(avctx, AV_LOG_ERROR, "%s: query buffer %d failed, %s (%d)\n", __func__, buf->index, strerror(errno), errno);
999+ return ret;
1000+ }
1001+
1002+ if (V4L2_TYPE_IS_OUTPUT(type)) {
1003+ void *addr = mmap(NULL, buf->size, PROT_READ | PROT_WRITE, MAP_SHARED, ctx->video_fd, V4L2_TYPE_IS_MULTIPLANAR(type) ? buf->buffer.m.planes[0].m.mem_offset : buf->buffer.m.offset);
1004+ if (addr == MAP_FAILED) {
1005+ av_log(avctx, AV_LOG_ERROR, "%s: mmap failed, %s (%d)\n", __func__, strerror(errno), errno);
1006+ return -1;
1007+ }
1008+
1009+ buf->addr = (uint8_t*)addr;
1010+ } else {
1011+ struct v4l2_exportbuffer exportbuffer = {
1012+ .type = type,
1013+ .index = buf->index,
1014+ .flags = O_RDONLY,
1015+ };
1016+
1017+ ret = ioctl(ctx->video_fd, VIDIOC_EXPBUF, &exportbuffer);
1018+ if (ret < 0) {
1019+ av_log(avctx, AV_LOG_ERROR, "%s: export buffer %d failed, %s (%d)\n", __func__, buf->index, strerror(errno), errno);
1020+ return ret;
1021+ }
1022+
1023+ buf->fd = exportbuffer.fd;
1024+ }
1025+
1026+ av_log(avctx, AV_LOG_DEBUG, "%s: buf=%p index=%d fd=%d addr=%p width=%u height=%u size=%u\n", __func__, buf, buf->index, buf->fd, buf->addr, buf->width, buf->height, buf->size);
1027+ return 0;
1028+}
1029+
1030+static void v4l2_request_buffer_free(V4L2RequestBuffer *buf)
1031+{
1032+ av_log(NULL, AV_LOG_DEBUG, "%s: buf=%p index=%d fd=%d addr=%p width=%u height=%u size=%u\n", __func__, buf, buf->index, buf->fd, buf->addr, buf->width, buf->height, buf->size);
1033+
1034+ if (buf->addr)
1035+ munmap(buf->addr, buf->size);
1036+
1037+ if (buf->fd >= 0)
1038+ close(buf->fd);
1039+}
1040+
1041+static void v4l2_request_frame_free(void *opaque, uint8_t *data)
1042+{
1043+ AVCodecContext *avctx = opaque;
1044+ V4L2RequestDescriptor *req = (V4L2RequestDescriptor*)data;
1045+
1046+ av_log(NULL, AV_LOG_DEBUG, "%s: avctx=%p data=%p request_fd=%d\n", __func__, avctx, data, req->request_fd);
1047+
1048+ if (req->request_fd >= 0)
1049+ close(req->request_fd);
1050+
1051+ v4l2_request_buffer_free(&req->capture);
1052+ v4l2_request_buffer_free(&req->output);
1053+
1054+ av_free(data);
1055+}
1056+
1057+static AVBufferRef *v4l2_request_frame_alloc(void *opaque, int size)
1058+{
1059+ AVCodecContext *avctx = opaque;
1060+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
1061+ V4L2RequestDescriptor *req;
1062+ AVBufferRef *ref;
1063+ uint8_t *data;
1064+ int ret;
1065+
1066+ data = av_mallocz(size);
1067+ if (!data)
1068+ return NULL;
1069+
1070+ av_log(avctx, AV_LOG_DEBUG, "%s: avctx=%p size=%d data=%p\n", __func__, avctx, size, data);
1071+
1072+ ref = av_buffer_create(data, size, v4l2_request_frame_free, avctx, 0);
1073+ if (!ref) {
1074+ av_freep(&data);
1075+ return NULL;
1076+ }
1077+
1078+ req = (V4L2RequestDescriptor*)data;
1079+ req->request_fd = -1;
1080+ req->output.fd = -1;
1081+ req->capture.fd = -1;
1082+
1083+ ret = v4l2_request_buffer_alloc(avctx, &req->output, ctx->output_type);
1084+ if (ret < 0) {
1085+ av_buffer_unref(&ref);
1086+ return NULL;
1087+ }
1088+
1089+ ret = v4l2_request_buffer_alloc(avctx, &req->capture, ctx->format.type);
1090+ if (ret < 0) {
1091+ av_buffer_unref(&ref);
1092+ return NULL;
1093+ }
1094+
1095+ ret = ioctl(ctx->media_fd, MEDIA_IOC_REQUEST_ALLOC, &req->request_fd);
1096+ if (ret < 0) {
1097+ av_log(avctx, AV_LOG_ERROR, "%s: request alloc failed, %s (%d)\n", __func__, strerror(errno), errno);
1098+ av_buffer_unref(&ref);
1099+ return NULL;
1100+ }
1101+
1102+ av_log(avctx, AV_LOG_DEBUG, "%s: avctx=%p size=%d data=%p request_fd=%d\n", __func__, avctx, size, data, req->request_fd);
1103+ return ref;
1104+}
1105+
1106+static void v4l2_request_pool_free(void *opaque)
1107+{
1108+ av_log(NULL, AV_LOG_DEBUG, "%s: opaque=%p\n", __func__, opaque);
1109+}
1110+
1111+static void v4l2_request_hwframe_ctx_free(AVHWFramesContext *hwfc)
1112+{
1113+ av_log(NULL, AV_LOG_DEBUG, "%s: hwfc=%p pool=%p\n", __func__, hwfc, hwfc->pool);
1114+
1115+ av_buffer_pool_flush(hwfc->pool);
1116+ av_buffer_pool_uninit(&hwfc->pool);
1117+}
1118+
1119+int ff_v4l2_request_frame_params(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx)
1120+{
1121+ V4L2RequestContext *ctx = avctx->internal->hwaccel_priv_data;
1122+ AVHWFramesContext *hwfc = (AVHWFramesContext*)hw_frames_ctx->data;
1123+
1124+ hwfc->format = AV_PIX_FMT_DRM_PRIME;
1125+ hwfc->sw_format = AV_PIX_FMT_NV12;
1126+ if (V4L2_TYPE_IS_MULTIPLANAR(ctx->format.type)) {
1127+ hwfc->width = ctx->format.fmt.pix_mp.width;
1128+ hwfc->height = ctx->format.fmt.pix_mp.height;
1129+ } else {
1130+ hwfc->width = ctx->format.fmt.pix.width;
1131+ hwfc->height = ctx->format.fmt.pix.height;
1132+ }
1133+
1134+ hwfc->pool = av_buffer_pool_init2(sizeof(V4L2RequestDescriptor), avctx, v4l2_request_frame_alloc, v4l2_request_pool_free);
1135+ if (!hwfc->pool)
1136+ return AVERROR(ENOMEM);
1137+
1138+ hwfc->free = v4l2_request_hwframe_ctx_free;
1139+
1140+ hwfc->initial_pool_size = 1;
1141+
1142+ switch (avctx->codec_id) {
1143+ case AV_CODEC_ID_VP9:
1144+ hwfc->initial_pool_size += 8;
1145+ break;
1146+ case AV_CODEC_ID_VP8:
1147+ hwfc->initial_pool_size += 3;
1148+ break;
1149+ default:
1150+ hwfc->initial_pool_size += 2;
1151+ }
1152+
1153+ av_log(avctx, AV_LOG_DEBUG, "%s: avctx=%p ctx=%p hw_frames_ctx=%p hwfc=%p pool=%p width=%d height=%d initial_pool_size=%d\n", __func__, avctx, ctx, hw_frames_ctx, hwfc, hwfc->pool, hwfc->width, hwfc->height, hwfc->initial_pool_size);
1154+
1155+ return 0;
1156+}
1157diff --git a/libavcodec/v4l2_request.h b/libavcodec/v4l2_request.h
1158new file mode 100644
1159index 000000000000..58d2aa70af80
1160--- /dev/null
1161+++ b/libavcodec/v4l2_request.h
1162@@ -0,0 +1,77 @@
1163+/*
1164+ * This file is part of FFmpeg.
1165+ *
1166+ * FFmpeg is free software; you can redistribute it and/or
1167+ * modify it under the terms of the GNU Lesser General Public
1168+ * License as published by the Free Software Foundation; either
1169+ * version 2.1 of the License, or (at your option) any later version.
1170+ *
1171+ * FFmpeg is distributed in the hope that it will be useful,
1172+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
1173+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1174+ * Lesser General Public License for more details.
1175+ *
1176+ * You should have received a copy of the GNU Lesser General Public
1177+ * License along with FFmpeg; if not, write to the Free Software
1178+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1179+ */
1180+
1181+#ifndef AVCODEC_V4L2_REQUEST_H
1182+#define AVCODEC_V4L2_REQUEST_H
1183+
1184+#include <linux/videodev2.h>
1185+
1186+#include "libavutil/hwcontext_drm.h"
1187+
1188+typedef struct V4L2RequestContext {
1189+ int video_fd;
1190+ int media_fd;
1191+ enum v4l2_buf_type output_type;
1192+ struct v4l2_format format;
1193+ int timestamp;
1194+} V4L2RequestContext;
1195+
1196+typedef struct V4L2RequestBuffer {
1197+ int index;
1198+ int fd;
1199+ uint8_t *addr;
1200+ uint32_t width;
1201+ uint32_t height;
1202+ uint32_t size;
1203+ uint32_t used;
1204+ uint32_t capabilities;
1205+ struct v4l2_buffer buffer;
1206+} V4L2RequestBuffer;
1207+
1208+typedef struct V4L2RequestDescriptor {
1209+ AVDRMFrameDescriptor drm;
1210+ int request_fd;
1211+ V4L2RequestBuffer output;
1212+ V4L2RequestBuffer capture;
1213+} V4L2RequestDescriptor;
1214+
1215+uint64_t ff_v4l2_request_get_capture_timestamp(AVFrame *frame);
1216+
1217+int ff_v4l2_request_reset_frame(AVCodecContext *avctx, AVFrame *frame);
1218+
1219+int ff_v4l2_request_append_output_buffer(AVCodecContext *avctx, AVFrame *frame, const uint8_t *data, uint32_t size);
1220+
1221+int ff_v4l2_request_set_controls(AVCodecContext *avctx, struct v4l2_ext_control *control, int count);
1222+
1223+int ff_v4l2_request_get_controls(AVCodecContext *avctx, struct v4l2_ext_control *control, int count);
1224+
1225+int ff_v4l2_request_query_control(AVCodecContext *avctx, struct v4l2_query_ext_ctrl *control);
1226+
1227+int ff_v4l2_request_query_control_default_value(AVCodecContext *avctx, uint32_t id);
1228+
1229+int ff_v4l2_request_decode_slice(AVCodecContext *avctx, AVFrame *frame, struct v4l2_ext_control *control, int count, int first_slice, int last_slice);
1230+
1231+int ff_v4l2_request_decode_frame(AVCodecContext *avctx, AVFrame *frame, struct v4l2_ext_control *control, int count);
1232+
1233+int ff_v4l2_request_init(AVCodecContext *avctx, uint32_t pixelformat, uint32_t buffersize, struct v4l2_ext_control *control, int count);
1234+
1235+int ff_v4l2_request_uninit(AVCodecContext *avctx);
1236+
1237+int ff_v4l2_request_frame_params(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx);
1238+
1239+#endif /* AVCODEC_V4L2_REQUEST_H */
1240From a0a5b816593e3911aeedd201baa8057b64a89a39 Mon Sep 17 00:00:00 2001
1241From: Ezequiel Garcia <ezequiel@collabora.com>
1242Date: Wed, 20 Feb 2019 11:18:00 -0300
1243Subject: [PATCH] h264dec: add idr_pic_id to slice context
1244
1245Used by V4L2 request API h264 hwaccel
1246
1247Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
1248Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
1249---
1250 libavcodec/h264_slice.c | 2 +-
1251 libavcodec/h264dec.h | 1 +
1252 2 files changed, 2 insertions(+), 1 deletion(-)
1253
1254diff --git a/libavcodec/h264_slice.c b/libavcodec/h264_slice.c
1255index db8363e4cc98..a19635a23d44 100644
1256--- a/libavcodec/h264_slice.c
1257+++ b/libavcodec/h264_slice.c
1258@@ -1818,7 +1818,7 @@ static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl,
1259 }
1260
1261 if (nal->type == H264_NAL_IDR_SLICE)
1262- get_ue_golomb_long(&sl->gb); /* idr_pic_id */
1263+ sl->idr_pic_id = get_ue_golomb_long(&sl->gb);
1264
1265 if (sps->poc_type == 0) {
1266 sl->poc_lsb = get_bits(&sl->gb, sps->log2_max_poc_lsb);
1267diff --git a/libavcodec/h264dec.h b/libavcodec/h264dec.h
1268index a419615124b2..316dc6a2c890 100644
1269--- a/libavcodec/h264dec.h
1270+++ b/libavcodec/h264dec.h
1271@@ -335,6 +335,7 @@ typedef struct H264SliceContext {
1272 int delta_poc[2];
1273 int curr_pic_num;
1274 int max_pic_num;
1275+ int idr_pic_id;
1276 } H264SliceContext;
1277
1278 /**
1279From 6349ae1e10d1b68c47c3b883b27567f9678c6e0c Mon Sep 17 00:00:00 2001
1280From: Boris Brezillon <boris.brezillon@collabora.com>
1281Date: Wed, 22 May 2019 14:44:22 +0200
1282Subject: [PATCH] h264dec: add ref_pic_marking and pic_order_cnt bit_size to
1283 slice context
1284
1285Used by V4L2 request API h264 hwaccel
1286
1287Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
1288Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
1289---
1290 libavcodec/h264_slice.c | 6 +++++-
1291 libavcodec/h264dec.h | 2 ++
1292 2 files changed, 7 insertions(+), 1 deletion(-)
1293
1294diff --git a/libavcodec/h264_slice.c b/libavcodec/h264_slice.c
1295index a19635a23d44..5a5ceb09352c 100644
1296--- a/libavcodec/h264_slice.c
1297+++ b/libavcodec/h264_slice.c
1298@@ -1736,7 +1736,7 @@ static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl,
1299 unsigned int slice_type, tmp, i;
1300 int field_pic_flag, bottom_field_flag;
1301 int first_slice = sl == h->slice_ctx && !h->current_slice;
1302- int picture_structure;
1303+ int picture_structure, pos;
1304
1305 if (first_slice)
1306 av_assert0(!h->setup_finished);
1307@@ -1820,6 +1820,7 @@ static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl,
1308 if (nal->type == H264_NAL_IDR_SLICE)
1309 sl->idr_pic_id = get_ue_golomb_long(&sl->gb);
1310
1311+ pos = sl->gb.index;
1312 if (sps->poc_type == 0) {
1313 sl->poc_lsb = get_bits(&sl->gb, sps->log2_max_poc_lsb);
1314
1315@@ -1833,6 +1834,7 @@ static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl,
1316 if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1317 sl->delta_poc[1] = get_se_golomb(&sl->gb);
1318 }
1319+ sl->pic_order_cnt_bit_size = sl->gb.index - pos;
1320
1321 sl->redundant_pic_count = 0;
1322 if (pps->redundant_pic_cnt_present)
1323@@ -1872,9 +1874,11 @@ static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl,
1324
1325 sl->explicit_ref_marking = 0;
1326 if (nal->ref_idc) {
1327+ pos = sl->gb.index;
1328 ret = ff_h264_decode_ref_pic_marking(sl, &sl->gb, nal, h->avctx);
1329 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1330 return AVERROR_INVALIDDATA;
1331+ sl->ref_pic_marking_bit_size = sl->gb.index - pos;
1332 }
1333
1334 if (sl->slice_type_nos != AV_PICTURE_TYPE_I && pps->cabac) {
1335diff --git a/libavcodec/h264dec.h b/libavcodec/h264dec.h
1336index 316dc6a2c890..f2cabac468d0 100644
1337--- a/libavcodec/h264dec.h
1338+++ b/libavcodec/h264dec.h
1339@@ -328,6 +328,7 @@ typedef struct H264SliceContext {
1340 MMCO mmco[MAX_MMCO_COUNT];
1341 int nb_mmco;
1342 int explicit_ref_marking;
1343+ int ref_pic_marking_bit_size;
1344
1345 int frame_num;
1346 int poc_lsb;
1347@@ -336,6 +337,7 @@ typedef struct H264SliceContext {
1348 int curr_pic_num;
1349 int max_pic_num;
1350 int idr_pic_id;
1351+ int pic_order_cnt_bit_size;
1352 } H264SliceContext;
1353
1354 /**
1355From 650875c24687c35290b2393ef39f77074ca49813 Mon Sep 17 00:00:00 2001
1356From: Jernej Skrabec <jernej.skrabec@siol.net>
1357Date: Sat, 15 Dec 2018 22:32:16 +0100
1358Subject: [PATCH] Add V4L2 request API h264 hwaccel
1359
1360Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
1361Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
1362---
1363 configure | 3 +
1364 libavcodec/Makefile | 1 +
1365 libavcodec/h264_slice.c | 4 +
1366 libavcodec/h264dec.c | 3 +
1367 libavcodec/hwaccels.h | 1 +
1368 libavcodec/v4l2_request_h264.c | 456 +++++++++++++++++++++++++++++++++
1369 6 files changed, 468 insertions(+)
1370 create mode 100644 libavcodec/v4l2_request_h264.c
1371
1372diff --git a/configure b/configure
1373index 9f9909a23696..293d0447f683 100755
1374--- a/configure
1375+++ b/configure
1376@@ -2925,6 +2925,8 @@ h264_dxva2_hwaccel_deps="dxva2"
1377 h264_dxva2_hwaccel_select="h264_decoder"
1378 h264_nvdec_hwaccel_deps="nvdec"
1379 h264_nvdec_hwaccel_select="h264_decoder"
1380+h264_v4l2request_hwaccel_deps="v4l2_request"
1381+h264_v4l2request_hwaccel_select="h264_decoder"
1382 h264_vaapi_hwaccel_deps="vaapi"
1383 h264_vaapi_hwaccel_select="h264_decoder"
1384 h264_vdpau_hwaccel_deps="vdpau"
1385@@ -6567,6 +6569,7 @@ if enabled v4l2_m2m; then
1386 fi
1387
1388 check_func_headers "linux/media.h linux/videodev2.h" v4l2_timeval_to_ns
1389+check_cc h264_v4l2_request linux/videodev2.h "int i = V4L2_PIX_FMT_H264_SLICE;"
1390
1391 check_headers sys/videoio.h
1392 test_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_sanitized struct_v4l2_frmivalenum_discrete
1393diff --git a/libavcodec/Makefile b/libavcodec/Makefile
1394index d74220516826..4f6e7fc2515c 100644
1395--- a/libavcodec/Makefile
1396+++ b/libavcodec/Makefile
1397@@ -903,6 +903,7 @@ OBJS-$(CONFIG_H264_D3D11VA_HWACCEL) += dxva2_h264.o
1398 OBJS-$(CONFIG_H264_DXVA2_HWACCEL) += dxva2_h264.o
1399 OBJS-$(CONFIG_H264_NVDEC_HWACCEL) += nvdec_h264.o
60ce8543 1400 OBJS-$(CONFIG_H264_QSV_HWACCEL) += qsvdec.o
80105e83
JP		 1401+OBJS-$(CONFIG_H264_V4L2REQUEST_HWACCEL) += v4l2_request_h264.o
1402 OBJS-$(CONFIG_H264_VAAPI_HWACCEL) += vaapi_h264.o
1403 OBJS-$(CONFIG_H264_VDPAU_HWACCEL) += vdpau_h264.o
1404 OBJS-$(CONFIG_H264_VIDEOTOOLBOX_HWACCEL) += videotoolbox.o
1405diff --git a/libavcodec/h264_slice.c b/libavcodec/h264_slice.c
1406index 5a5ceb09352c..4ed267317184 100644
1407--- a/libavcodec/h264_slice.c
1408+++ b/libavcodec/h264_slice.c
1409@@ -759,6 +759,7 @@ static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback)
1410 #define HWACCEL_MAX (CONFIG_H264_DXVA2_HWACCEL + \
1411 (CONFIG_H264_D3D11VA_HWACCEL * 2) + \
1412 CONFIG_H264_NVDEC_HWACCEL + \
1413+ CONFIG_H264_V4L2REQUEST_HWACCEL + \
1414 CONFIG_H264_VAAPI_HWACCEL + \
1415 CONFIG_H264_VIDEOTOOLBOX_HWACCEL + \
1416 CONFIG_H264_VDPAU_HWACCEL)
1417@@ -843,6 +844,9 @@ static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback)
1418 #endif
1419 #if CONFIG_H264_VIDEOTOOLBOX_HWACCEL
1420 *fmt++ = AV_PIX_FMT_VIDEOTOOLBOX;
1421+#endif
1422+#if CONFIG_H264_V4L2REQUEST_HWACCEL
1423+ *fmt++ = AV_PIX_FMT_DRM_PRIME;
1424 #endif
1425 if (h->avctx->codec->pix_fmts)
1426 choices = h->avctx->codec->pix_fmts;
1427diff --git a/libavcodec/h264dec.c b/libavcodec/h264dec.c
1428index 5eedeb3c275d..a504c89565c7 100644
1429--- a/libavcodec/h264dec.c
1430+++ b/libavcodec/h264dec.c
1431@@ -1102,6 +1102,9 @@ AVCodec ff_h264_decoder = {
1432 #endif
1433 #if CONFIG_H264_VIDEOTOOLBOX_HWACCEL
1434 HWACCEL_VIDEOTOOLBOX(h264),
1435+#endif
1436+#if CONFIG_H264_V4L2REQUEST_HWACCEL
1437+ HWACCEL_V4L2REQUEST(h264),
1438 #endif
1439 NULL
1440 },
1441diff --git a/libavcodec/hwaccels.h b/libavcodec/hwaccels.h
1442index 6109c89bd63c..f758c34ddcf9 100644
1443--- a/libavcodec/hwaccels.h
1444+++ b/libavcodec/hwaccels.h
1445@@ -27,6 +27,7 @@ extern const AVHWAccel ff_h264_d3d11va_hwaccel;
1446 extern const AVHWAccel ff_h264_d3d11va2_hwaccel;
1447 extern const AVHWAccel ff_h264_dxva2_hwaccel;
1448 extern const AVHWAccel ff_h264_nvdec_hwaccel;
1449+extern const AVHWAccel ff_h264_v4l2request_hwaccel;
1450 extern const AVHWAccel ff_h264_vaapi_hwaccel;
1451 extern const AVHWAccel ff_h264_vdpau_hwaccel;
1452 extern const AVHWAccel ff_h264_videotoolbox_hwaccel;
1453diff --git a/libavcodec/v4l2_request_h264.c b/libavcodec/v4l2_request_h264.c
1454new file mode 100644
1455index 000000000000..88da8f0a2db0
1456--- /dev/null
1457+++ b/libavcodec/v4l2_request_h264.c
1458@@ -0,0 +1,456 @@
1459+/*
1460+ * This file is part of FFmpeg.
1461+ *
1462+ * FFmpeg is free software; you can redistribute it and/or
1463+ * modify it under the terms of the GNU Lesser General Public
1464+ * License as published by the Free Software Foundation; either
1465+ * version 2.1 of the License, or (at your option) any later version.
1466+ *
1467+ * FFmpeg is distributed in the hope that it will be useful,
1468+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
1469+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1470+ * Lesser General Public License for more details.
1471+ *
1472+ * You should have received a copy of the GNU Lesser General Public
1473+ * License along with FFmpeg; if not, write to the Free Software
1474+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1475+ */
1476+
1477+#include "h264dec.h"
1478+#include "hwconfig.h"
1479+#include "v4l2_request.h"
1480+
1481+typedef struct V4L2RequestControlsH264 {
1482+ struct v4l2_ctrl_h264_sps sps;
1483+ struct v4l2_ctrl_h264_pps pps;
1484+ struct v4l2_ctrl_h264_scaling_matrix scaling_matrix;
1485+ struct v4l2_ctrl_h264_decode_params decode_params;
1486+ struct v4l2_ctrl_h264_slice_params slice_params;
1487+ struct v4l2_ctrl_h264_pred_weights pred_weights;
1488+ int pred_weights_required;
1489+ int first_slice;
1490+ int num_slices;
1491+} V4L2RequestControlsH264;
1492+
1493+typedef struct V4L2RequestContextH264 {
1494+ V4L2RequestContext base;
1495+ int decode_mode;
1496+ int start_code;
1497+} V4L2RequestContextH264;
1498+
1499+static uint8_t nalu_slice_start_code[] = { 0x00, 0x00, 0x01 };
1500+
1501+static void fill_weight_factors(struct v4l2_h264_weight_factors *factors, int list, const H264SliceContext *sl)
1502+{
1503+ for (int i = 0; i < sl->ref_count[list]; i++) {
1504+ if (sl->pwt.luma_weight_flag[list]) {
1505+ factors->luma_weight[i] = sl->pwt.luma_weight[i][list][0];
1506+ factors->luma_offset[i] = sl->pwt.luma_weight[i][list][1];
1507+ } else {
1508+ factors->luma_weight[i] = 1 << sl->pwt.luma_log2_weight_denom;
1509+ factors->luma_offset[i] = 0;
1510+ }
1511+ for (int j = 0; j < 2; j++) {
1512+ if (sl->pwt.chroma_weight_flag[list]) {
1513+ factors->chroma_weight[i][j] = sl->pwt.chroma_weight[i][list][j][0];
1514+ factors->chroma_offset[i][j] = sl->pwt.chroma_weight[i][list][j][1];
1515+ } else {
1516+ factors->chroma_weight[i][j] = 1 << sl->pwt.chroma_log2_weight_denom;
1517+ factors->chroma_offset[i][j] = 0;
1518+ }
1519+ }
1520+ }
1521+}
1522+
1523+static void fill_dpb_entry(struct v4l2_h264_dpb_entry *entry, const H264Picture *pic)
1524+{
1525+ entry->reference_ts = ff_v4l2_request_get_capture_timestamp(pic->f);
1526+ entry->pic_num = pic->pic_id;
1527+ entry->frame_num = pic->frame_num;
1528+ entry->fields = pic->reference & V4L2_H264_FRAME_REF;
1529+ entry->flags = V4L2_H264_DPB_ENTRY_FLAG_VALID;
1530+ if (entry->fields)
1531+ entry->flags |= V4L2_H264_DPB_ENTRY_FLAG_ACTIVE;
1532+ if (pic->long_ref)
1533+ entry->flags |= V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM;
1534+ if (pic->field_picture)
1535+ entry->flags |= V4L2_H264_DPB_ENTRY_FLAG_FIELD;
1536+ if (pic->field_poc[0] != INT_MAX)
1537+ entry->top_field_order_cnt = pic->field_poc[0];
1538+ if (pic->field_poc[1] != INT_MAX)
1539+ entry->bottom_field_order_cnt = pic->field_poc[1];
1540+}
1541+
1542+static void fill_dpb(struct v4l2_ctrl_h264_decode_params *decode, const H264Context *h)
1543+{
1544+ int entries = 0;
1545+
1546+ for (int i = 0; i < h->short_ref_count; i++) {
1547+ const H264Picture *pic = h->short_ref[i];
1548+ if (pic && (pic->field_poc[0] != INT_MAX || pic->field_poc[1] != INT_MAX))
1549+ fill_dpb_entry(&decode->dpb[entries++], pic);
1550+ }
1551+
1552+ if (!h->long_ref_count)
1553+ return;
1554+
1555+ for (int i = 0; i < FF_ARRAY_ELEMS(h->long_ref); i++) {
1556+ const H264Picture *pic = h->long_ref[i];
1557+ if (pic && (pic->field_poc[0] != INT_MAX || pic->field_poc[1] != INT_MAX))
1558+ fill_dpb_entry(&decode->dpb[entries++], pic);
1559+ }
1560+}
1561+
1562+static void fill_ref_list(struct v4l2_h264_reference *reference, struct v4l2_ctrl_h264_decode_params *decode, const H264Ref *ref)
1563+{
1564+ uint64_t timestamp;
1565+
1566+ if (!ref->parent)
1567+ return;
1568+
1569+ timestamp = ff_v4l2_request_get_capture_timestamp(ref->parent->f);
1570+
1571+ for (uint8_t i = 0; i < FF_ARRAY_ELEMS(decode->dpb); i++) {
1572+ struct v4l2_h264_dpb_entry *entry = &decode->dpb[i];
1573+ if ((entry->flags & V4L2_H264_DPB_ENTRY_FLAG_VALID) &&
1574+ entry->reference_ts == timestamp) {
1575+ reference->fields = ref->reference & V4L2_H264_FRAME_REF;
1576+ reference->index = i;
1577+ return;
1578+ }
1579+ }
1580+}
1581+
1582+static void fill_sps(struct v4l2_ctrl_h264_sps *ctrl, const H264Context *h)
1583+{
1584+ const SPS *sps = h->ps.sps;
1585+
1586+ *ctrl = (struct v4l2_ctrl_h264_sps) {
1587+ .profile_idc = sps->profile_idc,
1588+ .constraint_set_flags = sps->constraint_set_flags,
1589+ .level_idc = sps->level_idc,
1590+ .seq_parameter_set_id = sps->sps_id,
1591+ .chroma_format_idc = sps->chroma_format_idc,
1592+ .bit_depth_luma_minus8 = sps->bit_depth_luma - 8,
1593+ .bit_depth_chroma_minus8 = sps->bit_depth_chroma - 8,
1594+ .log2_max_frame_num_minus4 = sps->log2_max_frame_num - 4,
1595+ .pic_order_cnt_type = sps->poc_type,
1596+ .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_poc_lsb - 4,
1597+ .max_num_ref_frames = sps->ref_frame_count,
1598+ .num_ref_frames_in_pic_order_cnt_cycle = sps->poc_cycle_length,
1599+ .offset_for_non_ref_pic = sps->offset_for_non_ref_pic,
1600+ .offset_for_top_to_bottom_field = sps->offset_for_top_to_bottom_field,
1601+ .pic_width_in_mbs_minus1 = h->mb_width - 1,
1602+ .pic_height_in_map_units_minus1 = sps->frame_mbs_only_flag ? h->mb_height - 1 : h->mb_height / 2 - 1,
1603+ };
1604+
1605+ if (sps->poc_cycle_length > 0 && sps->poc_cycle_length <= 255)
1606+ memcpy(ctrl->offset_for_ref_frame, sps->offset_for_ref_frame, sps->poc_cycle_length * sizeof(ctrl->offset_for_ref_frame[0]));
1607+
1608+ if (sps->residual_color_transform_flag)
1609+ ctrl->flags |= V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE;
1610+ if (sps->transform_bypass)
1611+ ctrl->flags |= V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS;
1612+ if (sps->delta_pic_order_always_zero_flag)
1613+ ctrl->flags |= V4L2_H264_SPS_FLAG_DELTA_PIC_ORDER_ALWAYS_ZERO;
1614+ if (sps->gaps_in_frame_num_allowed_flag)
1615+ ctrl->flags |= V4L2_H264_SPS_FLAG_GAPS_IN_FRAME_NUM_VALUE_ALLOWED;
1616+ if (sps->frame_mbs_only_flag)
1617+ ctrl->flags |= V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY;
1618+ if (sps->mb_aff)
1619+ ctrl->flags |= V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD;
1620+ if (sps->direct_8x8_inference_flag)
1621+ ctrl->flags |= V4L2_H264_SPS_FLAG_DIRECT_8X8_INFERENCE;
1622+}
1623+
1624+static void fill_pps(struct v4l2_ctrl_h264_pps *ctrl, const H264Context *h)
1625+{
1626+ const SPS *sps = h->ps.sps;
1627+ const PPS *pps = h->ps.pps;
1628+ const H264SliceContext *sl = &h->slice_ctx[0];
1629+ int qp_bd_offset = 6 * (sps->bit_depth_luma - 8);
1630+
1631+ *ctrl = (struct v4l2_ctrl_h264_pps) {
1632+ .pic_parameter_set_id = sl->pps_id,
1633+ .seq_parameter_set_id = pps->sps_id,
1634+ .num_slice_groups_minus1 = pps->slice_group_count - 1,
1635+ .num_ref_idx_l0_default_active_minus1 = pps->ref_count[0] - 1,
1636+ .num_ref_idx_l1_default_active_minus1 = pps->ref_count[1] - 1,
1637+ .weighted_bipred_idc = pps->weighted_bipred_idc,
1638+ .pic_init_qp_minus26 = pps->init_qp - 26 - qp_bd_offset,
1639+ .pic_init_qs_minus26 = pps->init_qs - 26 - qp_bd_offset,
1640+ .chroma_qp_index_offset = pps->chroma_qp_index_offset[0],
1641+ .second_chroma_qp_index_offset = pps->chroma_qp_index_offset[1],
1642+ };
1643+
1644+ if (pps->cabac)
1645+ ctrl->flags |= V4L2_H264_PPS_FLAG_ENTROPY_CODING_MODE;
1646+ if (pps->pic_order_present)
1647+ ctrl->flags |= V4L2_H264_PPS_FLAG_BOTTOM_FIELD_PIC_ORDER_IN_FRAME_PRESENT;
1648+ if (pps->weighted_pred)
1649+ ctrl->flags |= V4L2_H264_PPS_FLAG_WEIGHTED_PRED;
1650+ if (pps->deblocking_filter_parameters_present)
1651+ ctrl->flags |= V4L2_H264_PPS_FLAG_DEBLOCKING_FILTER_CONTROL_PRESENT;
1652+ if (pps->constrained_intra_pred)
1653+ ctrl->flags |= V4L2_H264_PPS_FLAG_CONSTRAINED_INTRA_PRED;
1654+ if (pps->redundant_pic_cnt_present)
1655+ ctrl->flags |= V4L2_H264_PPS_FLAG_REDUNDANT_PIC_CNT_PRESENT;
1656+ if (pps->transform_8x8_mode)
1657+ ctrl->flags |= V4L2_H264_PPS_FLAG_TRANSFORM_8X8_MODE;
1658+
1659+ /* FFmpeg always provide a scaling matrix */
1660+ ctrl->flags |= V4L2_H264_PPS_FLAG_SCALING_MATRIX_PRESENT;
1661+}
1662+
1663+static int v4l2_request_h264_start_frame(AVCodecContext *avctx,
1664+ av_unused const uint8_t *buffer,
1665+ av_unused uint32_t size)
1666+{
1667+ const H264Context *h = avctx->priv_data;
1668+ const PPS *pps = h->ps.pps;
1669+ const SPS *sps = h->ps.sps;
1670+ const H264SliceContext *sl = &h->slice_ctx[0];
1671+ V4L2RequestControlsH264 *controls = h->cur_pic_ptr->hwaccel_picture_private;
1672+
1673+ fill_sps(&controls->sps, h);
1674+ fill_pps(&controls->pps, h);
1675+
1676+ memcpy(controls->scaling_matrix.scaling_list_4x4, pps->scaling_matrix4, sizeof(controls->scaling_matrix.scaling_list_4x4));
1677+ memcpy(controls->scaling_matrix.scaling_list_8x8[0], pps->scaling_matrix8[0], sizeof(controls->scaling_matrix.scaling_list_8x8[0]));
1678+ memcpy(controls->scaling_matrix.scaling_list_8x8[1], pps->scaling_matrix8[3], sizeof(controls->scaling_matrix.scaling_list_8x8[1]));
1679+
1680+ if (sps->chroma_format_idc == 3) {
1681+ memcpy(controls->scaling_matrix.scaling_list_8x8[2], pps->scaling_matrix8[1], sizeof(controls->scaling_matrix.scaling_list_8x8[2]));
1682+ memcpy(controls->scaling_matrix.scaling_list_8x8[3], pps->scaling_matrix8[4], sizeof(controls->scaling_matrix.scaling_list_8x8[3]));
1683+ memcpy(controls->scaling_matrix.scaling_list_8x8[4], pps->scaling_matrix8[2], sizeof(controls->scaling_matrix.scaling_list_8x8[4]));
1684+ memcpy(controls->scaling_matrix.scaling_list_8x8[5], pps->scaling_matrix8[5], sizeof(controls->scaling_matrix.scaling_list_8x8[5]));
1685+ }
1686+
1687+ controls->decode_params = (struct v4l2_ctrl_h264_decode_params) {
1688+ .nal_ref_idc = h->nal_ref_idc,
1689+ .frame_num = h->poc.frame_num,
1690+ .top_field_order_cnt = h->cur_pic_ptr->field_poc[0] != INT_MAX ? h->cur_pic_ptr->field_poc[0] : 0,
1691+ .bottom_field_order_cnt = h->cur_pic_ptr->field_poc[1] != INT_MAX ? h->cur_pic_ptr->field_poc[1] : 0,
1692+ .idr_pic_id = sl->idr_pic_id,
1693+ .pic_order_cnt_lsb = sl->poc_lsb,
1694+ .delta_pic_order_cnt_bottom = sl->delta_poc_bottom,
1695+ .delta_pic_order_cnt0 = sl->delta_poc[0],
1696+ .delta_pic_order_cnt1 = sl->delta_poc[1],
1697+ /* Size in bits of dec_ref_pic_marking() syntax element. */
1698+ .dec_ref_pic_marking_bit_size = sl->ref_pic_marking_bit_size,
1699+ /* Size in bits of pic order count syntax. */
1700+ .pic_order_cnt_bit_size = sl->pic_order_cnt_bit_size,
1701+ .slice_group_change_cycle = 0, /* slice group not supported by FFmpeg */
1702+ };
1703+
1704+ if (h->picture_idr)
1705+ controls->decode_params.flags |= V4L2_H264_DECODE_PARAM_FLAG_IDR_PIC;
1706+ if (FIELD_PICTURE(h))
1707+ controls->decode_params.flags |= V4L2_H264_DECODE_PARAM_FLAG_FIELD_PIC;
1708+ if (h->picture_structure == PICT_BOTTOM_FIELD)
1709+ controls->decode_params.flags |= V4L2_H264_DECODE_PARAM_FLAG_BOTTOM_FIELD;
1710+
1711+ fill_dpb(&controls->decode_params, h);
1712+
1713+ controls->first_slice = !FIELD_PICTURE(h) || h->first_field;
1714+ controls->num_slices = 0;
1715+
1716+ return ff_v4l2_request_reset_frame(avctx, h->cur_pic_ptr->f);
1717+}
1718+
1719+static int v4l2_request_h264_queue_decode(AVCodecContext *avctx, int last_slice)
1720+{
1721+ const H264Context *h = avctx->priv_data;
1722+ V4L2RequestControlsH264 *controls = h->cur_pic_ptr->hwaccel_picture_private;
1723+ V4L2RequestContextH264 *ctx = avctx->internal->hwaccel_priv_data;
1724+
1725+ struct v4l2_ext_control control[] = {
1726+ {
1727+ .id = V4L2_CID_STATELESS_H264_SPS,
1728+ .ptr = &controls->sps,
1729+ .size = sizeof(controls->sps),
1730+ },
1731+ {
1732+ .id = V4L2_CID_STATELESS_H264_PPS,
1733+ .ptr = &controls->pps,
1734+ .size = sizeof(controls->pps),
1735+ },
1736+ {
1737+ .id = V4L2_CID_STATELESS_H264_SCALING_MATRIX,
1738+ .ptr = &controls->scaling_matrix,
1739+ .size = sizeof(controls->scaling_matrix),
1740+ },
1741+ {
1742+ .id = V4L2_CID_STATELESS_H264_DECODE_PARAMS,
1743+ .ptr = &controls->decode_params,
1744+ .size = sizeof(controls->decode_params),
1745+ },
1746+ {
1747+ .id = V4L2_CID_STATELESS_H264_SLICE_PARAMS,
1748+ .ptr = &controls->slice_params,
1749+ .size = sizeof(controls->slice_params),
1750+ },
1751+ {
1752+ .id = V4L2_CID_STATELESS_H264_PRED_WEIGHTS,
1753+ .ptr = &controls->pred_weights,
1754+ .size = sizeof(controls->pred_weights),
1755+ },
1756+ };
1757+
1758+ if (ctx->decode_mode == V4L2_STATELESS_H264_DECODE_MODE_SLICE_BASED) {
1759+ int count = FF_ARRAY_ELEMS(control) - (controls->pred_weights_required ? 0 : 1);
1760+ return ff_v4l2_request_decode_slice(avctx, h->cur_pic_ptr->f, control, count, controls->first_slice, last_slice);
1761+ }
1762+
1763+ return ff_v4l2_request_decode_frame(avctx, h->cur_pic_ptr->f, control, FF_ARRAY_ELEMS(control) - 2);
1764+}
1765+
1766+static int v4l2_request_h264_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
1767+{
1768+ const H264Context *h = avctx->priv_data;
1769+ const PPS *pps = h->ps.pps;
1770+ const H264SliceContext *sl = &h->slice_ctx[0];
1771+ V4L2RequestControlsH264 *controls = h->cur_pic_ptr->hwaccel_picture_private;
1772+ V4L2RequestContextH264 *ctx = avctx->internal->hwaccel_priv_data;
1773+ int i, ret, count;
1774+
1775+ if (ctx->decode_mode == V4L2_STATELESS_H264_DECODE_MODE_SLICE_BASED && controls->num_slices) {
1776+ ret = v4l2_request_h264_queue_decode(avctx, 0);
1777+ if (ret)
1778+ return ret;
1779+
1780+ ff_v4l2_request_reset_frame(avctx, h->cur_pic_ptr->f);
1781+ controls->first_slice = 0;
1782+ }
1783+
1784+ if (ctx->start_code == V4L2_STATELESS_H264_START_CODE_ANNEX_B) {
1785+ ret = ff_v4l2_request_append_output_buffer(avctx, h->cur_pic_ptr->f, nalu_slice_start_code, 3);
1786+ if (ret)
1787+ return ret;
1788+ }
1789+
1790+ ret = ff_v4l2_request_append_output_buffer(avctx, h->cur_pic_ptr->f, buffer, size);
1791+ if (ret)
1792+ return ret;
1793+
1794+ if (ctx->decode_mode != V4L2_STATELESS_H264_DECODE_MODE_SLICE_BASED)
1795+ return 0;
1796+
1797+ controls->slice_params = (struct v4l2_ctrl_h264_slice_params) {
1798+ /* Offset in bits to slice_data() from the beginning of this slice. */
1799+ .header_bit_size = get_bits_count(&sl->gb),
1800+
1801+ .first_mb_in_slice = sl->first_mb_addr,
1802+
1803+ .slice_type = ff_h264_get_slice_type(sl),
1804+ .colour_plane_id = 0, /* separate colour plane not supported by FFmpeg */
1805+ .redundant_pic_cnt = sl->redundant_pic_count,
1806+ .cabac_init_idc = sl->cabac_init_idc,
1807+ .slice_qp_delta = sl->qscale - pps->init_qp,
1808+ .slice_qs_delta = 0, /* not implemented by FFmpeg */
1809+ .disable_deblocking_filter_idc = sl->deblocking_filter < 2 ? !sl->deblocking_filter : sl->deblocking_filter,
1810+ .slice_alpha_c0_offset_div2 = sl->slice_alpha_c0_offset / 2,
1811+ .slice_beta_offset_div2 = sl->slice_beta_offset / 2,
1812+ .num_ref_idx_l0_active_minus1 = sl->list_count > 0 ? sl->ref_count[0] - 1 : 0,
1813+ .num_ref_idx_l1_active_minus1 = sl->list_count > 1 ? sl->ref_count[1] - 1 : 0,
1814+ };
1815+
1816+ if (sl->slice_type == AV_PICTURE_TYPE_B && sl->direct_spatial_mv_pred)
1817+ controls->slice_params.flags |= V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED;
1818+ /* V4L2_H264_SLICE_FLAG_SP_FOR_SWITCH: not implemented by FFmpeg */
1819+
1820+ controls->pred_weights_required = V4L2_H264_CTRL_PRED_WEIGHTS_REQUIRED(&controls->pps, &controls->slice_params);
1821+ if (controls->pred_weights_required) {
1822+ controls->pred_weights.chroma_log2_weight_denom = sl->pwt.chroma_log2_weight_denom;
1823+ controls->pred_weights.luma_log2_weight_denom = sl->pwt.luma_log2_weight_denom;
1824+ }
1825+
1826+ count = sl->list_count > 0 ? sl->ref_count[0] : 0;
1827+ for (i = 0; i < count; i++)
1828+ fill_ref_list(&controls->slice_params.ref_pic_list0[i], &controls->decode_params, &sl->ref_list[0][i]);
1829+ if (count && controls->pred_weights_required)
1830+ fill_weight_factors(&controls->pred_weights.weight_factors[0], 0, sl);
1831+
1832+ count = sl->list_count > 1 ? sl->ref_count[1] : 0;
1833+ for (i = 0; i < count; i++)
1834+ fill_ref_list(&controls->slice_params.ref_pic_list1[i], &controls->decode_params, &sl->ref_list[1][i]);
1835+ if (count && controls->pred_weights_required)
1836+ fill_weight_factors(&controls->pred_weights.weight_factors[1], 1, sl);
1837+
1838+ controls->num_slices++;
1839+ return 0;
1840+}
1841+
1842+static int v4l2_request_h264_end_frame(AVCodecContext *avctx)
1843+{
1844+ const H264Context *h = avctx->priv_data;
1845+ return v4l2_request_h264_queue_decode(avctx, !FIELD_PICTURE(h) || !h->first_field);
1846+}
1847+
1848+static int v4l2_request_h264_set_controls(AVCodecContext *avctx)
1849+{
1850+ V4L2RequestContextH264 *ctx = avctx->internal->hwaccel_priv_data;
1851+
1852+ struct v4l2_ext_control control[] = {
1853+ { .id = V4L2_CID_STATELESS_H264_DECODE_MODE, },
1854+ { .id = V4L2_CID_STATELESS_H264_START_CODE, },
1855+ };
1856+
1857+ ctx->decode_mode = ff_v4l2_request_query_control_default_value(avctx, V4L2_CID_STATELESS_H264_DECODE_MODE);
1858+ if (ctx->decode_mode != V4L2_STATELESS_H264_DECODE_MODE_SLICE_BASED &&
1859+ ctx->decode_mode != V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED) {
1860+ av_log(avctx, AV_LOG_ERROR, "%s: unsupported decode mode, %d\n", __func__, ctx->decode_mode);
1861+ return AVERROR(EINVAL);
1862+ }
1863+
1864+ ctx->start_code = ff_v4l2_request_query_control_default_value(avctx, V4L2_CID_STATELESS_H264_START_CODE);
1865+ if (ctx->start_code != V4L2_STATELESS_H264_START_CODE_NONE &&
1866+ ctx->start_code != V4L2_STATELESS_H264_START_CODE_ANNEX_B) {
1867+ av_log(avctx, AV_LOG_ERROR, "%s: unsupported start code, %d\n", __func__, ctx->start_code);
1868+ return AVERROR(EINVAL);
1869+ }
1870+
1871+ control[0].value = ctx->decode_mode;
1872+ control[1].value = ctx->start_code;
1873+
1874+ return ff_v4l2_request_set_controls(avctx, control, FF_ARRAY_ELEMS(control));
1875+}
1876+
1877+static int v4l2_request_h264_init(AVCodecContext *avctx)
1878+{
1879+ const H264Context *h = avctx->priv_data;
1880+ struct v4l2_ctrl_h264_sps sps;
1881+ int ret;
1882+
1883+ struct v4l2_ext_control control[] = {
1884+ {
1885+ .id = V4L2_CID_STATELESS_H264_SPS,
1886+ .ptr = &sps,
1887+ .size = sizeof(sps),
1888+ },
1889+ };
1890+
1891+ fill_sps(&sps, h);
1892+
1893+ ret = ff_v4l2_request_init(avctx, V4L2_PIX_FMT_H264_SLICE, 4 * 1024 * 1024, control, FF_ARRAY_ELEMS(control));
1894+ if (ret)
1895+ return ret;
1896+
1897+ return v4l2_request_h264_set_controls(avctx);
1898+}
1899+
1900+const AVHWAccel ff_h264_v4l2request_hwaccel = {
1901+ .name = "h264_v4l2request",
1902+ .type = AVMEDIA_TYPE_VIDEO,
1903+ .id = AV_CODEC_ID_H264,
1904+ .pix_fmt = AV_PIX_FMT_DRM_PRIME,
1905+ .start_frame = v4l2_request_h264_start_frame,
1906+ .decode_slice = v4l2_request_h264_decode_slice,
1907+ .end_frame = v4l2_request_h264_end_frame,
1908+ .frame_priv_data_size = sizeof(V4L2RequestControlsH264),
1909+ .init = v4l2_request_h264_init,
1910+ .uninit = ff_v4l2_request_uninit,
1911+ .priv_data_size = sizeof(V4L2RequestContextH264),
1912+ .frame_params = ff_v4l2_request_frame_params,
1913+ .caps_internal = HWACCEL_CAP_ASYNC_SAFE,
1914+};
1915From f9f4a89058a6fac25712cc385eab72f70e9ac4c8 Mon Sep 17 00:00:00 2001
1916From: Jonas Karlman <jonas@kwiboo.se>
1917Date: Mon, 29 Apr 2019 22:08:59 +0000
1918Subject: [PATCH] HACK: hwcontext_drm: do not require drm device
1919
1920Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
1921---
1922 libavutil/hwcontext_drm.c | 5 +++++
1923 1 file changed, 5 insertions(+)
1924
1925diff --git a/libavutil/hwcontext_drm.c b/libavutil/hwcontext_drm.c
1926index 32cbde82ebfa..aa4794c5e665 100644
1927--- a/libavutil/hwcontext_drm.c
1928+++ b/libavutil/hwcontext_drm.c
1929@@ -43,6 +43,11 @@ static int drm_device_create(AVHWDeviceContext *hwdev, const char *device,
1930 AVDRMDeviceContext *hwctx = hwdev->hwctx;
1931 drmVersionPtr version;
1932
1933+ if (device == NULL) {
1934+ hwctx->fd = -1;
1935+ return 0;
1936+ }
1937+
1938 hwctx->fd = open(device, O_RDWR);
1939 if (hwctx->fd < 0)
1940 return AVERROR(errno);
1941From fa7165e391287bf970569e36b0b19bff947b084f Mon Sep 17 00:00:00 2001
1942From: Jonas Karlman <jonas@kwiboo.se>
1943Date: Mon, 27 Jul 2020 23:15:45 +0000
1944Subject: [PATCH] HACK: define drm NV15 and NV20 format
1945
1946---
1947 libavcodec/v4l2_request.c | 8 ++++++++
1948 1 file changed, 8 insertions(+)
1949
1950diff --git a/libavcodec/v4l2_request.c b/libavcodec/v4l2_request.c
1951index 0b294feff2eb..a8f0ee79eeef 100644
1952--- a/libavcodec/v4l2_request.c
1953+++ b/libavcodec/v4l2_request.c
1954@@ -30,6 +30,14 @@
1955 #include "internal.h"
1956 #include "v4l2_request.h"
1957
1958+#ifndef DRM_FORMAT_NV15
1959+#define DRM_FORMAT_NV15 fourcc_code('N', 'V', '1', '5')
1960+#endif
1961+
1962+#ifndef DRM_FORMAT_NV20
1963+#define DRM_FORMAT_NV20 fourcc_code('N', 'V', '2', '0')
1964+#endif
1965+
1966 uint64_t ff_v4l2_request_get_capture_timestamp(AVFrame *frame)
1967 {
1968 V4L2RequestDescriptor *req = (V4L2RequestDescriptor*)frame->data[0];
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