From 7cbb105feff82722206613f3e4cee3e98df827d9 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Thu, 2 Oct 2014 14:08:32 -0300 Subject: [PATCH] [media] coda: store bitstream buffer position with buffer metadata Storing the buffer position in the bitstream with the buffer metadata allows to later use that information to drop metadata for skipped buffers and to determine whether bitstream padding has to be applied. This patch also renames struct coda_timestamp to struct coda_buffer_meta to make clear that it contains more than only the buffer timestamp. Signed-off-by: Philipp Zabel Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/coda/coda-bit.c | 53 +++++++++++++---------- drivers/media/platform/coda/coda-common.c | 14 +++--- drivers/media/platform/coda/coda.h | 8 ++-- 3 files changed, 43 insertions(+), 32 deletions(-) diff --git a/drivers/media/platform/coda/coda-bit.c b/drivers/media/platform/coda/coda-bit.c index 931248dc60f9..d1ecda54666e 100644 --- a/drivers/media/platform/coda/coda-bit.c +++ b/drivers/media/platform/coda/coda-bit.c @@ -217,11 +217,16 @@ static bool coda_bitstream_try_queue(struct coda_ctx *ctx, void coda_fill_bitstream(struct coda_ctx *ctx) { struct vb2_buffer *src_buf; - struct coda_timestamp *ts; + struct coda_buffer_meta *meta; + u32 start; while (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) > 0) { src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); + /* Buffer start position */ + start = ctx->bitstream_fifo.kfifo.in & + ctx->bitstream_fifo.kfifo.mask; + if (coda_bitstream_try_queue(ctx, src_buf)) { /* * Source buffer is queued in the bitstream ringbuffer; @@ -229,12 +234,16 @@ void coda_fill_bitstream(struct coda_ctx *ctx) */ src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); - ts = kmalloc(sizeof(*ts), GFP_KERNEL); - if (ts) { - ts->sequence = src_buf->v4l2_buf.sequence; - ts->timecode = src_buf->v4l2_buf.timecode; - ts->timestamp = src_buf->v4l2_buf.timestamp; - list_add_tail(&ts->list, &ctx->timestamp_list); + meta = kmalloc(sizeof(*meta), GFP_KERNEL); + if (meta) { + meta->sequence = src_buf->v4l2_buf.sequence; + meta->timecode = src_buf->v4l2_buf.timecode; + meta->timestamp = src_buf->v4l2_buf.timestamp; + meta->start = start; + meta->end = ctx->bitstream_fifo.kfifo.in & + ctx->bitstream_fifo.kfifo.mask; + list_add_tail(&meta->list, + &ctx->buffer_meta_list); } v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE); @@ -1629,7 +1638,7 @@ static void coda_finish_decode(struct coda_ctx *ctx) struct coda_q_data *q_data_src; struct coda_q_data *q_data_dst; struct vb2_buffer *dst_buf; - struct coda_timestamp *ts; + struct coda_buffer_meta *meta; unsigned long payload; int width, height; int decoded_idx; @@ -1757,23 +1766,23 @@ static void coda_finish_decode(struct coda_ctx *ctx) val = coda_read(dev, CODA_RET_DEC_PIC_FRAME_NUM) - 1; val -= ctx->sequence_offset; mutex_lock(&ctx->bitstream_mutex); - if (!list_empty(&ctx->timestamp_list)) { - ts = list_first_entry(&ctx->timestamp_list, - struct coda_timestamp, list); - list_del(&ts->list); - if (val != (ts->sequence & 0xffff)) { + if (!list_empty(&ctx->buffer_meta_list)) { + meta = list_first_entry(&ctx->buffer_meta_list, + struct coda_buffer_meta, list); + list_del(&meta->list); + if (val != (meta->sequence & 0xffff)) { v4l2_err(&dev->v4l2_dev, "sequence number mismatch (%d(%d) != %d)\n", val, ctx->sequence_offset, - ts->sequence); + meta->sequence); } - ctx->frame_timestamps[decoded_idx] = *ts; - kfree(ts); + ctx->frame_metas[decoded_idx] = *meta; + kfree(meta); } else { v4l2_err(&dev->v4l2_dev, "empty timestamp list!\n"); - memset(&ctx->frame_timestamps[decoded_idx], 0, - sizeof(struct coda_timestamp)); - ctx->frame_timestamps[decoded_idx].sequence = val; + memset(&ctx->frame_metas[decoded_idx], 0, + sizeof(struct coda_buffer_meta)); + ctx->frame_metas[decoded_idx].sequence = val; } mutex_unlock(&ctx->bitstream_mutex); @@ -1812,9 +1821,9 @@ static void coda_finish_decode(struct coda_ctx *ctx) V4L2_BUF_FLAG_PFRAME | V4L2_BUF_FLAG_BFRAME); dst_buf->v4l2_buf.flags |= ctx->frame_types[ctx->display_idx]; - ts = &ctx->frame_timestamps[ctx->display_idx]; - dst_buf->v4l2_buf.timecode = ts->timecode; - dst_buf->v4l2_buf.timestamp = ts->timestamp; + meta = &ctx->frame_metas[ctx->display_idx]; + dst_buf->v4l2_buf.timecode = meta->timecode; + dst_buf->v4l2_buf.timestamp = meta->timestamp; switch (q_data_dst->fourcc) { case V4L2_PIX_FMT_YUV420: diff --git a/drivers/media/platform/coda/coda-common.c b/drivers/media/platform/coda/coda-common.c index 76b80d27a135..6eaf88e88862 100644 --- a/drivers/media/platform/coda/coda-common.c +++ b/drivers/media/platform/coda/coda-common.c @@ -1279,14 +1279,14 @@ static void coda_stop_streaming(struct vb2_queue *q) } if (!ctx->streamon_out && !ctx->streamon_cap) { - struct coda_timestamp *ts; + struct coda_buffer_meta *meta; mutex_lock(&ctx->bitstream_mutex); - while (!list_empty(&ctx->timestamp_list)) { - ts = list_first_entry(&ctx->timestamp_list, - struct coda_timestamp, list); - list_del(&ts->list); - kfree(ts); + while (!list_empty(&ctx->buffer_meta_list)) { + meta = list_first_entry(&ctx->buffer_meta_list, + struct coda_buffer_meta, list); + list_del(&meta->list); + kfree(meta); } mutex_unlock(&ctx->bitstream_mutex); kfifo_init(&ctx->bitstream_fifo, @@ -1642,7 +1642,7 @@ static int coda_open(struct file *file) ctx->bitstream.vaddr, ctx->bitstream.size); mutex_init(&ctx->bitstream_mutex); mutex_init(&ctx->buffer_mutex); - INIT_LIST_HEAD(&ctx->timestamp_list); + INIT_LIST_HEAD(&ctx->buffer_meta_list); coda_lock(ctx); list_add(&ctx->list, &dev->instances); diff --git a/drivers/media/platform/coda/coda.h b/drivers/media/platform/coda/coda.h index c14dee82891f..8dd81a75c2fb 100644 --- a/drivers/media/platform/coda/coda.h +++ b/drivers/media/platform/coda/coda.h @@ -130,11 +130,13 @@ struct coda_params { u32 slice_max_mb; }; -struct coda_timestamp { +struct coda_buffer_meta { struct list_head list; u32 sequence; struct v4l2_timecode timecode; struct timeval timestamp; + u32 start; + u32 end; }; /* Per-queue, driver-specific private data */ @@ -220,9 +222,9 @@ struct coda_ctx { struct coda_aux_buf slicebuf; struct coda_aux_buf internal_frames[CODA_MAX_FRAMEBUFFERS]; u32 frame_types[CODA_MAX_FRAMEBUFFERS]; - struct coda_timestamp frame_timestamps[CODA_MAX_FRAMEBUFFERS]; + struct coda_buffer_meta frame_metas[CODA_MAX_FRAMEBUFFERS]; u32 frame_errors[CODA_MAX_FRAMEBUFFERS]; - struct list_head timestamp_list; + struct list_head buffer_meta_list; struct coda_aux_buf workbuf; int num_internal_frames; int idx; -- 2.34.1