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https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-03 09:01:54 -05:00
v4l2: handle expbuf case
This commit is contained in:
Wim Taymans
parent
d040747d4b
commit
e774339ffe
1 changed files with 74 additions and 49 deletions
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@ -25,6 +25,7 @@
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#include <poll.h>
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#include <pthread.h>
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#include <errno.h>
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#include <sys/mman.h>
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#include <SDL2/SDL.h>
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@ -81,11 +82,11 @@ static inline void init_type(struct type *type, struct spa_type_map *map)
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struct buffer {
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struct spa_buffer buffer;
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struct spa_meta metas[2];
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struct spa_meta metas[1];
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struct spa_meta_header header;
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struct spa_meta_pointer ptr;
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struct spa_data datas[1];
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struct spa_chunk chunks[1];
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SDL_Texture *texture;
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};
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struct data {
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@ -198,26 +199,22 @@ static void on_source_have_output(void *_data)
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{
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struct data *data = _data;
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int res;
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struct spa_buffer *b;
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struct buffer *b;
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void *sdata, *ddata;
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int sstride, dstride;
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int i;
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uint8_t *src, *dst;
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struct spa_meta *metas;
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struct spa_data *datas;
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struct spa_port_io *io = &data->source_output[0];
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handle_events(data);
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b = data->bp[io->buffer_id];
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b = &data->buffers[io->buffer_id];
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metas = b->metas;
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datas = b->datas;
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datas = b->buffer.datas;
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if (metas[1].type == data->type.meta.Pointer &&
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((struct spa_meta_pointer *) metas[1].data)->type == data->type.SDL_Texture) {
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SDL_Texture *texture;
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texture = ((struct spa_meta_pointer *) metas[1].data)->ptr;
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if (b->texture) {
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SDL_Texture *texture = b->texture;
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SDL_UnlockTexture(texture);
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@ -238,11 +235,24 @@ static void on_source_have_output(void *_data)
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spa_ringbuffer_set_avail(&datas[0].chunk->area, sstride * 240);
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datas[0].chunk->stride = sstride;
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} else {
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uint8_t *map;
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if (SDL_LockTexture(data->texture, NULL, &ddata, &dstride) < 0) {
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fprintf(stderr, "Couldn't lock texture: %s\n", SDL_GetError());
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return;
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}
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sdata = datas[0].data;
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if (datas[0].type == data->type.data.MemFd ||
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datas[0].type == data->type.data.DmaBuf) {
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map = mmap(NULL, datas[0].maxsize + datas[0].mapoffset, PROT_READ,
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MAP_PRIVATE, datas[0].fd, 0);
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sdata = SPA_MEMBER(map, datas[0].mapoffset, uint8_t);
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} else if (datas[0].type == data->type.data.MemPtr) {
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map = NULL;
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sdata = datas[0].data;
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} else
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return;
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sstride = datas[0].chunk->stride;
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for (i = 0; i < 240; i++) {
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@ -255,6 +265,9 @@ static void on_source_have_output(void *_data)
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SDL_RenderClear(data->renderer);
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SDL_RenderCopy(data->renderer, data->texture, NULL, NULL);
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SDL_RenderPresent(data->renderer);
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if (map)
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munmap(map, datas[0].maxsize + datas[0].mapoffset);
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}
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io->status = SPA_STATUS_NEED_BUFFER;
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@ -324,32 +337,19 @@ static int make_nodes(struct data *data, const char *device)
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return res;
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}
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static int alloc_buffers(struct data *data)
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static int setup_buffers(struct data *data)
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{
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int i;
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for (i = 0; i < MAX_BUFFERS; i++) {
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struct buffer *b = &data->buffers[i];
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SDL_Texture *texture;
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void *ptr;
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int stride;
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data->bp[i] = &b->buffer;
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texture = SDL_CreateTexture(data->renderer,
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SDL_PIXELFORMAT_YUY2,
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SDL_TEXTUREACCESS_STREAMING, 320, 240);
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if (!texture) {
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printf("can't create texture: %s\n", SDL_GetError());
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return -ENOMEM;
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}
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if (SDL_LockTexture(texture, NULL, &ptr, &stride) < 0) {
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fprintf(stderr, "Couldn't lock texture: %s\n", SDL_GetError());
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return -EIO;
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}
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b->texture = NULL;
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b->buffer.id = i;
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b->buffer.n_metas = 2;
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b->buffer.n_metas = 1;
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b->buffer.metas = b->metas;
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b->buffer.n_datas = 1;
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b->buffer.datas = b->datas;
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@ -362,26 +362,50 @@ static int alloc_buffers(struct data *data)
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b->metas[0].data = &b->header;
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b->metas[0].size = sizeof(b->header);
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b->ptr.type = data->type.SDL_Texture;
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b->ptr.ptr = texture;
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b->metas[1].type = data->type.meta.Pointer;
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b->metas[1].data = &b->ptr;
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b->metas[1].size = sizeof(b->ptr);
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b->datas[0].type = data->type.data.MemPtr;
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b->datas[0].type = 0;
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b->datas[0].flags = 0;
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b->datas[0].fd = -1;
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b->datas[0].mapoffset = 0;
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b->datas[0].maxsize = 0;
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b->datas[0].data = NULL;
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b->datas[0].chunk = &b->chunks[0];
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spa_ringbuffer_set_avail(&b->datas[0].chunk->area, 0);
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b->datas[0].chunk->stride = 0;
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}
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data->n_buffers = MAX_BUFFERS;
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return 0;
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}
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static int sdl_alloc_buffers(struct data *data)
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{
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int i;
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for (i = 0; i < MAX_BUFFERS; i++) {
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struct buffer *b = &data->buffers[i];
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SDL_Texture *texture;
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void *ptr;
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int stride;
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texture = SDL_CreateTexture(data->renderer,
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SDL_PIXELFORMAT_YUY2,
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SDL_TEXTUREACCESS_STREAMING, 320, 240);
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if (!texture) {
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printf("can't create texture: %s\n", SDL_GetError());
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return -ENOMEM;
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}
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if (SDL_LockTexture(texture, NULL, &ptr, &stride) < 0) {
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fprintf(stderr, "Couldn't lock texture: %s\n", SDL_GetError());
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return -EIO;
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}
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b->texture = texture;
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b->datas[0].type = data->type.data.MemPtr;
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b->datas[0].maxsize = stride * 240;
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b->datas[0].data = ptr;
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b->datas[0].chunk = &b->chunks[0];
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spa_ringbuffer_set_avail(&b->datas[0].chunk->area, stride * 240);
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b->datas[0].chunk->stride = stride;
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}
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data->n_buffers = MAX_BUFFERS;
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return spa_node_port_use_buffers(data->source, SPA_DIRECTION_OUTPUT, 0, data->bp,
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data->n_buffers);
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return 0;
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}
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static int negotiate_formats(struct data *data)
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@ -399,13 +423,6 @@ static int negotiate_formats(struct data *data)
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&data->source_output[0])) < 0)
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return res;
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#if 0
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void *state = NULL;
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if ((res = spa_node_port_enum_formats(data->source, 0, &format, NULL, &state)) <= 0)
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return -EBADF;
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#else
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format = spa_pod_builder_object(&b,
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0, data->type.format,
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"I", data->type.media_type.video,
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@ -413,7 +430,6 @@ static int negotiate_formats(struct data *data)
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":", data->type.format_video.format, "I", data->type.video_format.YUY2,
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":", data->type.format_video.size, "R", &SPA_RECTANGLE(320, 240),
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":", data->type.format_video.framerate, "F", &SPA_FRACTION(25,1));
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#endif
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if ((res = spa_node_port_set_param(data->source,
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SPA_DIRECTION_OUTPUT, 0,
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@ -424,9 +440,18 @@ static int negotiate_formats(struct data *data)
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if ((res = spa_node_port_get_info(data->source, SPA_DIRECTION_OUTPUT, 0, &info)) < 0)
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return res;
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setup_buffers(data);
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if (data->use_buffer) {
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if ((res = alloc_buffers(data)) < 0)
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if ((res = sdl_alloc_buffers(data)) < 0)
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return res;
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if ((res = spa_node_port_use_buffers(data->source, SPA_DIRECTION_OUTPUT, 0, data->bp,
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data->n_buffers)) < 0) {
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printf("can't allocate buffers: %s\n", spa_strerror(res));
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return -1;
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}
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} else {
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unsigned int n_buffers;
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@ -441,7 +466,7 @@ static int negotiate_formats(struct data *data)
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if ((res =
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spa_node_port_alloc_buffers(data->source, SPA_DIRECTION_OUTPUT, 0, NULL, 0,
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data->bp, &n_buffers)) < 0) {
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printf("can't allocate buffers: %s\n", SDL_GetError());
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printf("can't allocate buffers: %s\n", spa_strerror(res));
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return -1;
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}
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data->n_buffers = n_buffers;
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