[PATCH 10/10] venus: dec: make decoder compliant with stateful codec API

From: Stanimir Varbanov
Date: Thu Jan 17 2019 - 11:21:21 EST

This refactored code for start/stop streaming vb2 operations and
adds a state machine handling similar to the one in stateful codec
API documentation. One major change is that now the HFI session is
started on STREAMON(OUTPUT) and stopped on REQBUF(OUTPUT,count=0),
during that time streamoff(cap,out) just flush buffers but doesn't
stop the session. The other major change is that now the capture
and output queues are completely separated.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@xxxxxxxxxx>
---
drivers/media/platform/qcom/venus/core.h | 20 +-
drivers/media/platform/qcom/venus/helpers.c | 23 +-
drivers/media/platform/qcom/venus/helpers.h | 5 +
drivers/media/platform/qcom/venus/vdec.c | 449 ++++++++++++++++----
4 files changed, 389 insertions(+), 108 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
index 79c7e816c706..5a133c203455 100644
--- a/drivers/media/platform/qcom/venus/core.h
+++ b/drivers/media/platform/qcom/venus/core.h
@@ -218,6 +218,15 @@ struct venus_buffer {

#define to_venus_buffer(ptr) container_of(ptr, struct venus_buffer, vb)

+#define DEC_STATE_UNINIT 0
+#define DEC_STATE_INIT 1
+#define DEC_STATE_CAPTURE_SETUP 2
+#define DEC_STATE_STOPPED 3
+#define DEC_STATE_SEEK 4
+#define DEC_STATE_DRAIN 5
+#define DEC_STATE_DECODING 6
+#define DEC_STATE_DRC 7
+
/**
* struct venus_inst - holds per instance paramerters
*
@@ -241,6 +250,10 @@ struct venus_buffer {
* @colorspace: current color space
* @quantization: current quantization
* @xfer_func: current xfer function
+ * @codec_state: current codec API state (see DEC/ENC_STATE_)
+ * @reconf_wait: wait queue for resolution change event
+ * @ten_bits: does new stream is 10bits depth
+ * @buf_count: used to count number number of buffers (reqbuf(0))
* @fps: holds current FPS
* @timeperframe: holds current time per frame structure
* @fmt_out: a reference to output format structure
@@ -255,8 +268,6 @@ struct venus_buffer {
* @opb_buftype: output picture buffer type
* @opb_fmt: output picture buffer raw format
* @reconfig: a flag raised by decoder when the stream resolution changed
- * @reconfig_width: holds the new width
- * @reconfig_height: holds the new height
* @hfi_codec: current codec for this instance in HFI space
* @sequence_cap: a sequence counter for capture queue
* @sequence_out: a sequence counter for output queue
@@ -296,6 +307,9 @@ struct venus_inst {
u8 ycbcr_enc;
u8 quantization;
u8 xfer_func;
+ unsigned int codec_state;
+ wait_queue_head_t reconf_wait;
+ int buf_count;
u64 fps;
struct v4l2_fract timeperframe;
const struct venus_format *fmt_out;
@@ -310,8 +324,6 @@ struct venus_inst {
u32 opb_buftype;
u32 opb_fmt;
bool reconfig;
- u32 reconfig_width;
- u32 reconfig_height;
u32 hfi_codec;
u32 sequence_cap;
u32 sequence_out;
diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c
index 637ce7b82d94..25d8cceccae4 100644
--- a/drivers/media/platform/qcom/venus/helpers.c
+++ b/drivers/media/platform/qcom/venus/helpers.c
@@ -1030,16 +1030,15 @@ void venus_helper_vb2_buf_queue(struct vb2_buffer *vb)

v4l2_m2m_buf_queue(m2m_ctx, vbuf);

- if (!(inst->streamon_out & inst->streamon_cap))
- goto unlock;
-
- ret = is_buf_refed(inst, vbuf);
- if (ret)
- goto unlock;
+ if (IS_OUT(vb->vb2_queue, inst) || IS_CAP(vb->vb2_queue, inst)) {
+ ret = is_buf_refed(inst, vbuf);
+ if (ret)
+ goto unlock;

- ret = session_process_buf(inst, vbuf);
- if (ret)
- return_buf_error(inst, vbuf);
+ ret = session_process_buf(inst, vbuf);
+ if (ret)
+ return_buf_error(inst, vbuf);
+ }

unlock:
mutex_unlock(&inst->lock);
@@ -1155,14 +1154,8 @@ int venus_helper_vb2_start_streaming(struct venus_inst *inst)
if (ret)
goto err_unload_res;

- ret = venus_helper_queue_dpb_bufs(inst);
- if (ret)
- goto err_session_stop;
-
return 0;

-err_session_stop:
- hfi_session_stop(inst);
err_unload_res:
hfi_session_unload_res(inst);
err_unreg_bufs:
diff --git a/drivers/media/platform/qcom/venus/helpers.h b/drivers/media/platform/qcom/venus/helpers.h
index 2ec1c1a8b416..3b46139b5ee1 100644
--- a/drivers/media/platform/qcom/venus/helpers.h
+++ b/drivers/media/platform/qcom/venus/helpers.h
@@ -17,6 +17,11 @@

#include <media/videobuf2-v4l2.h>

+#define IS_OUT(q, inst) (inst->streamon_out && \
+ q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
+#define IS_CAP(q, inst) (inst->streamon_cap && \
+ q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+
struct venus_inst;
struct venus_core;

diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
index 7a9370df7515..306e0f7d3337 100644
--- a/drivers/media/platform/qcom/venus/vdec.c
+++ b/drivers/media/platform/qcom/venus/vdec.c
@@ -201,28 +201,18 @@ static int vdec_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
struct venus_inst *inst = to_inst(file);
const struct venus_format *fmt = NULL;
struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
+ int ret;

if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
fmt = inst->fmt_cap;
else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
fmt = inst->fmt_out;

- if (inst->reconfig) {
- struct v4l2_format format = {};
-
- inst->out_width = inst->reconfig_width;
- inst->out_height = inst->reconfig_height;
- inst->reconfig = false;
-
- format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
- format.fmt.pix_mp.pixelformat = inst->fmt_cap->pixfmt;
- format.fmt.pix_mp.width = inst->out_width;
- format.fmt.pix_mp.height = inst->out_height;
-
- vdec_try_fmt_common(inst, &format);
-
- inst->width = format.fmt.pix_mp.width;
- inst->height = format.fmt.pix_mp.height;
+ if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
+ ret = wait_event_timeout(inst->reconf_wait, inst->reconfig,
+ msecs_to_jiffies(100));
+ if (!ret)
+ return -EINVAL;
}

pixmp->pixelformat = fmt->pixfmt;
@@ -457,6 +447,10 @@ vdec_try_decoder_cmd(struct file *file, void *fh, struct v4l2_decoder_cmd *cmd)
if (cmd->flags & V4L2_DEC_CMD_STOP_TO_BLACK)
return -EINVAL;
break;
+ case V4L2_DEC_CMD_START:
+ if (cmd->flags & V4L2_DEC_CMD_START_MUTE_AUDIO)
+ return -EINVAL;
+ break;
default:
return -EINVAL;
}
@@ -477,18 +471,23 @@ vdec_decoder_cmd(struct file *file, void *fh, struct v4l2_decoder_cmd *cmd)

mutex_lock(&inst->lock);

- /*
- * Implement V4L2_DEC_CMD_STOP by enqueue an empty buffer on decoder
- * input to signal EOS.
- */
- if (!(inst->streamon_out & inst->streamon_cap))
- goto unlock;
+ if (cmd->cmd == V4L2_DEC_CMD_STOP) {
+ /*
+ * Implement V4L2_DEC_CMD_STOP by enqueue an empty buffer on
+ * decoder input to signal EOS.
+ */
+ if (!(inst->streamon_out & inst->streamon_cap))
+ goto unlock;

- fdata.buffer_type = HFI_BUFFER_INPUT;
- fdata.flags |= HFI_BUFFERFLAG_EOS;
- fdata.device_addr = 0xdeadbeef;
+ fdata.buffer_type = HFI_BUFFER_INPUT;
+ fdata.flags |= HFI_BUFFERFLAG_EOS;
+ fdata.device_addr = 0xdeadb000;

- ret = hfi_session_process_buf(inst, &fdata);
+ ret = hfi_session_process_buf(inst, &fdata);
+
+ if (!ret && inst->codec_state == DEC_STATE_DECODING)
+ inst->codec_state = DEC_STATE_DRAIN;
+ }

unlock:
mutex_unlock(&inst->lock);
@@ -649,20 +648,18 @@ static int vdec_output_conf(struct venus_inst *inst)
return 0;
}

-static int vdec_init_session(struct venus_inst *inst)
+static int vdec_session_init(struct venus_inst *inst)
{
int ret;

ret = hfi_session_init(inst, inst->fmt_out->pixfmt);
- if (ret)
+ if (ret == -EINVAL)
+ return 0;
+ else if (ret)
return ret;

- ret = venus_helper_set_input_resolution(inst, inst->out_width,
- inst->out_height);
- if (ret)
- goto deinit;
-
- ret = venus_helper_set_color_format(inst, inst->fmt_cap->pixfmt);
+ ret = venus_helper_set_input_resolution(inst, frame_width_min(inst),
+ frame_height_min(inst));
if (ret)
goto deinit;

@@ -681,26 +678,19 @@ static int vdec_num_buffers(struct venus_inst *inst, unsigned int *in_num,

*in_num = *out_num = 0;

- ret = vdec_init_session(inst);
- if (ret)
- return ret;
-
ret = venus_helper_get_bufreq(inst, HFI_BUFFER_INPUT, &bufreq);
if (ret)
- goto deinit;
+ return ret;

*in_num = HFI_BUFREQ_COUNT_MIN(&bufreq, ver);

ret = venus_helper_get_bufreq(inst, HFI_BUFFER_OUTPUT, &bufreq);
if (ret)
- goto deinit;
+ return ret;

*out_num = HFI_BUFREQ_COUNT_MIN(&bufreq, ver);

-deinit:
- hfi_session_deinit(inst);
-
- return ret;
+ return 0;
}

static int vdec_queue_setup(struct vb2_queue *q,
@@ -733,6 +723,10 @@ static int vdec_queue_setup(struct vb2_queue *q,
return 0;
}

+ ret = vdec_session_init(inst);
+ if (ret)
+ return ret;
+
ret = vdec_num_buffers(inst, &in_num, &out_num);
if (ret)
return ret;
@@ -758,6 +752,11 @@ static int vdec_queue_setup(struct vb2_queue *q,
inst->output_buf_size = sizes[0];
*num_buffers = max(*num_buffers, out_num);
inst->num_output_bufs = *num_buffers;
+
+ mutex_lock(&inst->lock);
+ if (inst->codec_state == DEC_STATE_CAPTURE_SETUP)
+ inst->codec_state = DEC_STATE_STOPPED;
+ mutex_unlock(&inst->lock);
break;
default:
ret = -EINVAL;
@@ -794,80 +793,298 @@ static int vdec_verify_conf(struct venus_inst *inst)
return 0;
}

-static int vdec_start_streaming(struct vb2_queue *q, unsigned int count)
+static int vdec_start_capture(struct venus_inst *inst)
{
- struct venus_inst *inst = vb2_get_drv_priv(q);
int ret;

- mutex_lock(&inst->lock);
+ if (!inst->streamon_out)
+ return -EINVAL;

- if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
- inst->streamon_out = 1;
- else
- inst->streamon_cap = 1;
+ if (inst->codec_state == DEC_STATE_DECODING) {
+ if (inst->reconfig)
+ goto reconfigure;

- if (!(inst->streamon_out & inst->streamon_cap)) {
- mutex_unlock(&inst->lock);
+ venus_helper_queue_dpb_bufs(inst);
+ venus_helper_process_initial_cap_bufs(inst);
+ inst->streamon_cap = 1;
return 0;
}

- venus_helper_init_instance(inst);
+ if (inst->codec_state != DEC_STATE_STOPPED)
+ return -EINVAL;

- inst->reconfig = false;
- inst->sequence_cap = 0;
- inst->sequence_out = 0;
+reconfigure:
+ ret = hfi_session_flush(inst, HFI_FLUSH_OUTPUT);
+ if (ret)
+ return ret;

- ret = vdec_init_session(inst);
+ ret = vdec_output_conf(inst);
if (ret)
- goto bufs_done;
+ return ret;
+
+ ret = venus_helper_set_num_bufs(inst, inst->num_input_bufs,
+ VB2_MAX_FRAME, VB2_MAX_FRAME);
+ if (ret)
+ return ret;
+
+ ret = venus_helper_intbufs_realloc(inst);
+ if (ret)
+ goto err;
+
+ ret = venus_helper_alloc_dpb_bufs(inst);
+ if (ret)
+ goto err;
+
+ ret = venus_helper_queue_dpb_bufs(inst);
+ if (ret)
+ goto free_dpb_bufs;
+
+ ret = venus_helper_process_initial_cap_bufs(inst);
+ if (ret)
+ goto free_dpb_bufs;
+
+ venus_helper_load_scale_clocks(inst->core);
+
+ ret = hfi_session_continue(inst);
+ if (ret)
+ goto free_dpb_bufs;
+
+ inst->codec_state = DEC_STATE_DECODING;
+
+ inst->streamon_cap = 1;
+ inst->sequence_cap = 0;
+ inst->reconfig = false;
+
+ return 0;
+
+free_dpb_bufs:
+ venus_helper_free_dpb_bufs(inst);
+err:
+ return ret;
+}
+
+static int vdec_start_output(struct venus_inst *inst)
+{
+ int ret;
+
+ if (inst->codec_state == DEC_STATE_SEEK) {
+ ret = venus_helper_process_initial_out_bufs(inst);
+ inst->codec_state = DEC_STATE_DECODING;
+ goto done;
+ }
+
+ if (inst->codec_state == DEC_STATE_INIT ||
+ inst->codec_state == DEC_STATE_CAPTURE_SETUP) {
+ ret = venus_helper_process_initial_out_bufs(inst);
+ goto done;
+ }
+
+ if (inst->codec_state != DEC_STATE_UNINIT)
+ return -EINVAL;
+
+ venus_helper_init_instance(inst);
+ inst->sequence_out = 0;
+ inst->reconfig = false;

ret = vdec_set_properties(inst);
if (ret)
- goto deinit_sess;
+ return ret;

ret = vdec_output_conf(inst);
if (ret)
- goto deinit_sess;
+ return ret;

ret = vdec_verify_conf(inst);
if (ret)
- goto deinit_sess;
+ return ret;

ret = venus_helper_set_num_bufs(inst, inst->num_input_bufs,
VB2_MAX_FRAME, VB2_MAX_FRAME);
if (ret)
- goto deinit_sess;
+ return ret;

- ret = venus_helper_alloc_dpb_bufs(inst);
+ ret = venus_helper_vb2_start_streaming(inst);
if (ret)
- goto deinit_sess;
+ return ret;

- ret = venus_helper_vb2_start_streaming(inst);
+ ret = venus_helper_process_initial_out_bufs(inst);
if (ret)
- goto deinit_sess;
+ return ret;

- mutex_unlock(&inst->lock);
+ inst->codec_state = DEC_STATE_INIT;
+
+done:
+ inst->streamon_out = 1;
+ return ret;
+}
+
+static int vdec_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+ struct venus_inst *inst = vb2_get_drv_priv(q);
+ int ret;
+
+ mutex_lock(&inst->lock);
+
+ if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+ ret = vdec_start_capture(inst);
+ else
+ ret = vdec_start_output(inst);

+ if (ret)
+ goto error;
+
+ mutex_unlock(&inst->lock);
return 0;

-deinit_sess:
- hfi_session_deinit(inst);
-bufs_done:
+error:
venus_helper_buffers_done(inst, VB2_BUF_STATE_QUEUED);
+ mutex_unlock(&inst->lock);
+ return ret;
+}
+
+static void vdec_dst_buffers_done(struct venus_inst *inst,
+ enum vb2_buffer_state state)
+{
+ struct vb2_v4l2_buffer *buf;
+
+ while ((buf = v4l2_m2m_dst_buf_remove(inst->m2m_ctx)))
+ v4l2_m2m_buf_done(buf, state);
+}
+
+static int vdec_stop_capture(struct venus_inst *inst)
+{
+ int ret = 0;
+
+ switch (inst->codec_state) {
+ case DEC_STATE_DECODING:
+ ret = hfi_session_flush(inst, HFI_FLUSH_ALL);
+ vdec_dst_buffers_done(inst, VB2_BUF_STATE_ERROR);
+ inst->codec_state = DEC_STATE_STOPPED;
+ break;
+ case DEC_STATE_DRAIN:
+ vdec_dst_buffers_done(inst, VB2_BUF_STATE_ERROR);
+ inst->codec_state = DEC_STATE_STOPPED;
+ break;
+ case DEC_STATE_DRC:
+ ret = hfi_session_flush(inst, HFI_FLUSH_OUTPUT);
+ vdec_dst_buffers_done(inst, VB2_BUF_STATE_ERROR);
+ inst->codec_state = DEC_STATE_CAPTURE_SETUP;
+ INIT_LIST_HEAD(&inst->registeredbufs);
+ venus_helper_free_dpb_bufs(inst);
+ break;
+ default:
+ return 0;
+ }
+
+ return ret;
+}
+
+static int vdec_stop_output(struct venus_inst *inst)
+{
+ int ret = 0;
+
+ switch (inst->codec_state) {
+ case DEC_STATE_DECODING:
+ case DEC_STATE_DRAIN:
+ case DEC_STATE_STOPPED:
+ ret = hfi_session_flush(inst, HFI_FLUSH_ALL);
+ inst->codec_state = DEC_STATE_SEEK;
+ break;
+ case DEC_STATE_INIT:
+ case DEC_STATE_CAPTURE_SETUP:
+ ret = hfi_session_flush(inst, HFI_FLUSH_INPUT);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static void vdec_stop_streaming(struct vb2_queue *q)
+{
+ struct venus_inst *inst = vb2_get_drv_priv(q);
+ int ret = -EINVAL;
+
+ mutex_lock(&inst->lock);
+
+ if (IS_CAP(q, inst))
+ ret = vdec_stop_capture(inst);
+ else if (IS_OUT(q, inst))
+ ret = vdec_stop_output(inst);
+
+ venus_helper_buffers_done(inst, VB2_BUF_STATE_ERROR);
+
+ if (ret)
+ goto unlock;
+
if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
inst->streamon_out = 0;
else
inst->streamon_cap = 0;
+
+unlock:
mutex_unlock(&inst->lock);
- return ret;
+}
+
+static void vdec_session_release(struct venus_inst *inst)
+{
+ struct venus_core *core = inst->core;
+ int ret, abort = 0;
+
+ mutex_lock(&inst->lock);
+
+ inst->codec_state = DEC_STATE_UNINIT;
+
+ ret = hfi_session_stop(inst);
+ abort = (ret && ret != -EINVAL) ? 1 : 0;
+ ret = hfi_session_unload_res(inst);
+ abort = (ret && ret != -EINVAL) ? 1 : 0;
+ ret = venus_helper_unregister_bufs(inst);
+ abort = (ret && ret != -EINVAL) ? 1 : 0;
+ ret = venus_helper_intbufs_free(inst);
+ abort = (ret && ret != -EINVAL) ? 1 : 0;
+ ret = hfi_session_deinit(inst);
+ abort = (ret && ret != -EINVAL) ? 1 : 0;
+
+ if (inst->session_error || core->sys_error)
+ abort = 1;
+
+ if (abort)
+ hfi_session_abort(inst);
+
+ venus_helper_free_dpb_bufs(inst);
+ venus_helper_load_scale_clocks(core);
+ INIT_LIST_HEAD(&inst->registeredbufs);
+
+ mutex_unlock(&inst->lock);
+}
+
+static int vdec_buf_init(struct vb2_buffer *vb)
+{
+ struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
+
+ inst->buf_count++;
+
+ return venus_helper_vb2_buf_init(vb);
+}
+
+static void vdec_buf_cleanup(struct vb2_buffer *vb)
+{
+ struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
+
+ inst->buf_count--;
+ if (!inst->buf_count)
+ vdec_session_release(inst);
}

static const struct vb2_ops vdec_vb2_ops = {
.queue_setup = vdec_queue_setup,
- .buf_init = venus_helper_vb2_buf_init,
+ .buf_init = vdec_buf_init,
+ .buf_cleanup = vdec_buf_cleanup,
.buf_prepare = venus_helper_vb2_buf_prepare,
.start_streaming = vdec_start_streaming,
- .stop_streaming = venus_helper_vb2_stop_streaming,
+ .stop_streaming = vdec_stop_streaming,
.buf_queue = venus_helper_vb2_buf_queue,
};

@@ -891,6 +1108,7 @@ static void vdec_buf_done(struct venus_inst *inst, unsigned int buf_type,

vbuf->flags = flags;
vbuf->field = V4L2_FIELD_NONE;
+ vb = &vbuf->vb2_buf;

if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
vb = &vbuf->vb2_buf;
@@ -903,6 +1121,9 @@ static void vdec_buf_done(struct venus_inst *inst, unsigned int buf_type,
const struct v4l2_event ev = { .type = V4L2_EVENT_EOS };

v4l2_event_queue_fh(&inst->fh, &ev);
+
+ if (inst->codec_state == DEC_STATE_DRAIN)
+ inst->codec_state = DEC_STATE_STOPPED;
}
} else {
vbuf->sequence = inst->sequence_out++;
@@ -914,17 +1135,69 @@ static void vdec_buf_done(struct venus_inst *inst, unsigned int buf_type,
if (hfi_flags & HFI_BUFFERFLAG_DATACORRUPT)
state = VB2_BUF_STATE_ERROR;

+ if (hfi_flags & HFI_BUFFERFLAG_DROP_FRAME) {
+ state = VB2_BUF_STATE_ERROR;
+ vb2_set_plane_payload(vb, 0, 0);
+ vb->timestamp = 0;
+ }
+
v4l2_m2m_buf_done(vbuf, state);
}

+static void vdec_event_change(struct venus_inst *inst,
+ struct hfi_event_data *ev_data, bool sufficient)
+{
+ static const struct v4l2_event ev = {
+ .type = V4L2_EVENT_SOURCE_CHANGE,
+ .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION };
+ struct device *dev = inst->core->dev_dec;
+ struct v4l2_format format = {};
+
+ mutex_lock(&inst->lock);
+
+ format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ format.fmt.pix_mp.pixelformat = inst->fmt_cap->pixfmt;
+ format.fmt.pix_mp.width = ev_data->width;
+ format.fmt.pix_mp.height = ev_data->height;
+
+ vdec_try_fmt_common(inst, &format);
+
+ inst->width = format.fmt.pix_mp.width;
+ inst->height = format.fmt.pix_mp.height;
+
+ inst->out_width = ev_data->width;
+ inst->out_height = ev_data->height;
+
+ dev_dbg(dev, "event %s sufficient resources (%ux%u)\n",
+ sufficient ? "" : "not", ev_data->width, ev_data->height);
+
+ if (sufficient) {
+ hfi_session_continue(inst);
+ } else {
+ switch (inst->codec_state) {
+ case DEC_STATE_INIT:
+ inst->codec_state = DEC_STATE_CAPTURE_SETUP;
+ break;
+ case DEC_STATE_DECODING:
+ inst->codec_state = DEC_STATE_DRC;
+ break;
+ default:
+ break;
+ }
+ }
+
+ inst->reconfig = true;
+ v4l2_event_queue_fh(&inst->fh, &ev);
+ wake_up(&inst->reconf_wait);
+
+ mutex_unlock(&inst->lock);
+}
+
static void vdec_event_notify(struct venus_inst *inst, u32 event,
struct hfi_event_data *data)
{
struct venus_core *core = inst->core;
struct device *dev = core->dev_dec;
- static const struct v4l2_event ev = {
- .type = V4L2_EVENT_SOURCE_CHANGE,
- .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION };

switch (event) {
case EVT_SESSION_ERROR:
@@ -934,18 +1207,10 @@ static void vdec_event_notify(struct venus_inst *inst, u32 event,
case EVT_SYS_EVENT_CHANGE:
switch (data->event_type) {
case HFI_EVENT_DATA_SEQUENCE_CHANGED_SUFFICIENT_BUF_RESOURCES:
- hfi_session_continue(inst);
- dev_dbg(dev, "event sufficient resources\n");
+ vdec_event_change(inst, data, true);
break;
case HFI_EVENT_DATA_SEQUENCE_CHANGED_INSUFFICIENT_BUF_RESOURCES:
- inst->reconfig_height = data->height;
- inst->reconfig_width = data->width;
- inst->reconfig = true;
-
- v4l2_event_queue_fh(&inst->fh, &ev);
-
- dev_dbg(dev, "event not sufficient resources (%ux%u)\n",
- data->width, data->height);
+ vdec_event_change(inst, data, false);
break;
case HFI_EVENT_RELEASE_BUFFER_REFERENCE:
venus_helper_release_buf_ref(inst, data->tag);
@@ -978,8 +1243,12 @@ static void vdec_inst_init(struct venus_inst *inst)
inst->hfi_codec = HFI_VIDEO_CODEC_H264;
}

+static void vdec_m2m_device_run(void *priv)
+{
+}
+
static const struct v4l2_m2m_ops vdec_m2m_ops = {
- .device_run = venus_helper_m2m_device_run,
+ .device_run = vdec_m2m_device_run,
.job_abort = venus_helper_m2m_job_abort,
};

@@ -1041,7 +1310,9 @@ static int vdec_open(struct file *file)
inst->core = core;
inst->session_type = VIDC_SESSION_TYPE_DEC;
inst->num_output_bufs = 1;
-
+ inst->codec_state = DEC_STATE_UNINIT;
+ inst->buf_count = 0;
+ init_waitqueue_head(&inst->reconf_wait);
venus_helper_init_instance(inst);

ret = pm_runtime_get_sync(core->dev_dec);
--
2.17.1