* memory buffer source filter
*/
+#include <float.h>
+
+#include "libavutil/channel_layout.h"
+#include "libavutil/common.h"
+#include "libavutil/fifo.h"
+#include "libavutil/frame.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/internal.h"
+#include "libavutil/opt.h"
+#include "libavutil/samplefmt.h"
#include "audio.h"
#include "avfilter.h"
#include "buffersrc.h"
#include "internal.h"
#include "video.h"
-#include "libavutil/audioconvert.h"
-#include "libavutil/fifo.h"
-#include "libavutil/imgutils.h"
-#include "libavutil/opt.h"
-#include "libavutil/samplefmt.h"
-
-typedef struct {
+typedef struct BufferSourceContext {
const AVClass *class;
AVFifoBuffer *fifo;
AVRational time_base; ///< time_base to set in the output link
+ AVRational frame_rate; ///< frame_rate to set in the output link
/* video only */
int h, w;
- enum PixelFormat pix_fmt;
+ enum AVPixelFormat pix_fmt;
+ char *pix_fmt_str;
AVRational pixel_aspect;
+ AVBufferRef *hw_frames_ctx;
+
/* audio only */
int sample_rate;
enum AVSampleFormat sample_fmt;
uint64_t channel_layout;
char *channel_layout_str;
+ int got_format_from_params;
int eof;
} BufferSourceContext;
return AVERROR(EINVAL);\
}
-int av_buffersrc_write_frame(AVFilterContext *buffer_filter, AVFrame *frame)
+AVBufferSrcParameters *av_buffersrc_parameters_alloc(void)
{
- BufferSourceContext *c = buffer_filter->priv;
- AVFilterBufferRef *buf;
- int ret;
+ AVBufferSrcParameters *par = av_mallocz(sizeof(*par));
+ if (!par)
+ return NULL;
- if (!frame) {
- c->eof = 1;
- return 0;
- } else if (c->eof)
- return AVERROR(EINVAL);
+ par->format = -1;
- if (!av_fifo_space(c->fifo) &&
- (ret = av_fifo_realloc2(c->fifo, av_fifo_size(c->fifo) +
- sizeof(buf))) < 0)
- return ret;
+ return par;
+}
- switch (buffer_filter->outputs[0]->type) {
+int av_buffersrc_parameters_set(AVFilterContext *ctx, AVBufferSrcParameters *param)
+{
+ BufferSourceContext *s = ctx->priv;
+
+ if (param->time_base.num > 0 && param->time_base.den > 0)
+ s->time_base = param->time_base;
+
+ switch (ctx->filter->outputs[0].type) {
case AVMEDIA_TYPE_VIDEO:
- CHECK_VIDEO_PARAM_CHANGE(buffer_filter, c, frame->width, frame->height,
- frame->format);
- buf = ff_get_video_buffer(buffer_filter->outputs[0], AV_PERM_WRITE,
- c->w, c->h);
- av_image_copy(buf->data, buf->linesize, frame->data, frame->linesize,
- c->pix_fmt, c->w, c->h);
+ if (param->format != AV_PIX_FMT_NONE) {
+ s->got_format_from_params = 1;
+ s->pix_fmt = param->format;
+ }
+ if (param->width > 0)
+ s->w = param->width;
+ if (param->height > 0)
+ s->h = param->height;
+ if (param->sample_aspect_ratio.num > 0 && param->sample_aspect_ratio.den > 0)
+ s->pixel_aspect = param->sample_aspect_ratio;
+ if (param->frame_rate.num > 0 && param->frame_rate.den > 0)
+ s->frame_rate = param->frame_rate;
+ if (param->hw_frames_ctx) {
+ av_buffer_unref(&s->hw_frames_ctx);
+ s->hw_frames_ctx = av_buffer_ref(param->hw_frames_ctx);
+ if (!s->hw_frames_ctx)
+ return AVERROR(ENOMEM);
+ }
break;
case AVMEDIA_TYPE_AUDIO:
- CHECK_AUDIO_PARAM_CHANGE(buffer_filter, c, frame->sample_rate, frame->channel_layout,
- frame->format);
- buf = ff_get_audio_buffer(buffer_filter->outputs[0], AV_PERM_WRITE,
- frame->nb_samples);
- av_samples_copy(buf->extended_data, frame->extended_data,
- 0, 0, frame->nb_samples,
- av_get_channel_layout_nb_channels(frame->channel_layout),
- frame->format);
+ if (param->format != AV_SAMPLE_FMT_NONE) {
+ s->got_format_from_params = 1;
+ s->sample_fmt = param->format;
+ }
+ if (param->sample_rate > 0)
+ s->sample_rate = param->sample_rate;
+ if (param->channel_layout)
+ s->channel_layout = param->channel_layout;
break;
default:
- return AVERROR(EINVAL);
+ return AVERROR_BUG;
}
- avfilter_copy_frame_props(buf, frame);
+ return 0;
+}
- if ((ret = av_fifo_generic_write(c->fifo, &buf, sizeof(buf), NULL)) < 0) {
- avfilter_unref_buffer(buf);
- return ret;
- }
+int attribute_align_arg av_buffersrc_write_frame(AVFilterContext *ctx, const AVFrame *frame)
+{
+ AVFrame *copy;
+ int ret = 0;
- return 0;
+ if (!(copy = av_frame_alloc()))
+ return AVERROR(ENOMEM);
+ ret = av_frame_ref(copy, frame);
+ if (ret >= 0)
+ ret = av_buffersrc_add_frame(ctx, copy);
+
+ av_frame_free(©);
+ return ret;
}
-int av_buffersrc_buffer(AVFilterContext *s, AVFilterBufferRef *buf)
+int attribute_align_arg av_buffersrc_add_frame(AVFilterContext *ctx,
+ AVFrame *frame)
{
- BufferSourceContext *c = s->priv;
- int ret;
+ BufferSourceContext *s = ctx->priv;
+ AVFrame *copy;
+ int refcounted, ret;
- if (!buf) {
- c->eof = 1;
+ if (!frame) {
+ s->eof = 1;
return 0;
- } else if (c->eof)
+ } else if (s->eof)
return AVERROR(EINVAL);
- if (!av_fifo_space(c->fifo) &&
- (ret = av_fifo_realloc2(c->fifo, av_fifo_size(c->fifo) +
- sizeof(buf))) < 0)
- return ret;
+ refcounted = !!frame->buf[0];
- switch (s->outputs[0]->type) {
+ switch (ctx->outputs[0]->type) {
case AVMEDIA_TYPE_VIDEO:
- CHECK_VIDEO_PARAM_CHANGE(s, c, buf->video->w, buf->video->h, buf->format);
+ CHECK_VIDEO_PARAM_CHANGE(ctx, s, frame->width, frame->height,
+ frame->format);
break;
case AVMEDIA_TYPE_AUDIO:
- CHECK_AUDIO_PARAM_CHANGE(s, c, buf->audio->sample_rate, buf->audio->channel_layout,
- buf->format);
+ CHECK_AUDIO_PARAM_CHANGE(ctx, s, frame->sample_rate, frame->channel_layout,
+ frame->format);
break;
default:
return AVERROR(EINVAL);
}
- if ((ret = av_fifo_generic_write(c->fifo, &buf, sizeof(buf), NULL)) < 0)
+ if (!av_fifo_space(s->fifo) &&
+ (ret = av_fifo_realloc2(s->fifo, av_fifo_size(s->fifo) +
+ sizeof(copy))) < 0)
+ return ret;
+
+ if (!(copy = av_frame_alloc()))
+ return AVERROR(ENOMEM);
+
+ if (refcounted) {
+ av_frame_move_ref(copy, frame);
+ } else {
+ ret = av_frame_ref(copy, frame);
+ if (ret < 0) {
+ av_frame_free(©);
+ return ret;
+ }
+ }
+
+ if ((ret = av_fifo_generic_write(s->fifo, ©, sizeof(copy), NULL)) < 0) {
+ if (refcounted)
+ av_frame_move_ref(frame, copy);
+ av_frame_free(©);
return ret;
+ }
return 0;
}
-static av_cold int init_video(AVFilterContext *ctx, const char *args)
+static av_cold int init_video(AVFilterContext *ctx)
{
BufferSourceContext *c = ctx->priv;
- char pix_fmt_str[128];
- int n = 0;
-
- if (!args ||
- (n = sscanf(args, "%d:%d:%127[^:]:%d:%d:%d:%d", &c->w, &c->h, pix_fmt_str,
- &c->time_base.num, &c->time_base.den,
- &c->pixel_aspect.num, &c->pixel_aspect.den)) != 7) {
- av_log(ctx, AV_LOG_ERROR, "Expected 7 arguments, but %d found in '%s'\n", n, args);
+
+ if (!(c->pix_fmt_str || c->got_format_from_params) || !c->w || !c->h ||
+ av_q2d(c->time_base) <= 0) {
+ av_log(ctx, AV_LOG_ERROR, "Invalid parameters provided.\n");
return AVERROR(EINVAL);
}
- if ((c->pix_fmt = av_get_pix_fmt(pix_fmt_str)) == PIX_FMT_NONE) {
- char *tail;
- c->pix_fmt = strtol(pix_fmt_str, &tail, 10);
- if (*tail || c->pix_fmt < 0 || c->pix_fmt >= PIX_FMT_NB) {
- av_log(ctx, AV_LOG_ERROR, "Invalid pixel format string '%s'\n", pix_fmt_str);
- return AVERROR(EINVAL);
+
+ if (c->pix_fmt_str) {
+ if ((c->pix_fmt = av_get_pix_fmt(c->pix_fmt_str)) == AV_PIX_FMT_NONE) {
+ char *tail;
+ c->pix_fmt = strtol(c->pix_fmt_str, &tail, 10);
+ if (*tail || c->pix_fmt < 0 || !av_pix_fmt_desc_get(c->pix_fmt)) {
+ av_log(ctx, AV_LOG_ERROR, "Invalid pixel format string '%s'\n", c->pix_fmt_str);
+ return AVERROR(EINVAL);
+ }
}
}
- if (!(c->fifo = av_fifo_alloc(sizeof(AVFilterBufferRef*))))
+ if (!(c->fifo = av_fifo_alloc(sizeof(AVFrame*))))
return AVERROR(ENOMEM);
- av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d pixfmt:%s\n", c->w, c->h, av_pix_fmt_descriptors[c->pix_fmt].name);
+ av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d pixfmt:%s tb:%d/%d sar:%d/%d\n",
+ c->w, c->h, av_get_pix_fmt_name(c->pix_fmt),
+ c->time_base.num, c->time_base.den,
+ c->pixel_aspect.num, c->pixel_aspect.den);
return 0;
}
#define OFFSET(x) offsetof(BufferSourceContext, x)
#define A AV_OPT_FLAG_AUDIO_PARAM
+#define V AV_OPT_FLAG_VIDEO_PARAM
+
+static const AVOption video_options[] = {
+ { "width", NULL, OFFSET(w), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V },
+ { "height", NULL, OFFSET(h), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V },
+ { "pix_fmt", NULL, OFFSET(pix_fmt_str), AV_OPT_TYPE_STRING, .flags = V },
+#if FF_API_OLD_FILTER_OPTS
+ /* those 4 are for compatibility with the old option passing system where each filter
+ * did its own parsing */
+ { "time_base_num", "deprecated, do not use", OFFSET(time_base.num), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V },
+ { "time_base_den", "deprecated, do not use", OFFSET(time_base.den), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V },
+ { "sar_num", "deprecated, do not use", OFFSET(pixel_aspect.num), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V },
+ { "sar_den", "deprecated, do not use", OFFSET(pixel_aspect.den), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V },
+#endif
+ { "sar", "sample aspect ratio", OFFSET(pixel_aspect), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
+ { "time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
+ { "frame_rate", NULL, OFFSET(frame_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
+ { NULL },
+};
+
+static const AVClass buffer_class = {
+ .class_name = "buffer source",
+ .item_name = av_default_item_name,
+ .option = video_options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
static const AVOption audio_options[] = {
- { "time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL, { 0 }, 0, INT_MAX, A },
- { "sample_rate", NULL, OFFSET(sample_rate), AV_OPT_TYPE_INT, { 0 }, 0, INT_MAX, A },
+ { "time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, INT_MAX, A },
+ { "sample_rate", NULL, OFFSET(sample_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, A },
{ "sample_fmt", NULL, OFFSET(sample_fmt_str), AV_OPT_TYPE_STRING, .flags = A },
{ "channel_layout", NULL, OFFSET(channel_layout_str), AV_OPT_TYPE_STRING, .flags = A },
{ NULL },
.version = LIBAVUTIL_VERSION_INT,
};
-static av_cold int init_audio(AVFilterContext *ctx, const char *args)
+static av_cold int init_audio(AVFilterContext *ctx)
{
BufferSourceContext *s = ctx->priv;
int ret = 0;
- s->class = &abuffer_class;
- av_opt_set_defaults(s);
-
- if ((ret = av_set_options_string(s, args, "=", ":")) < 0) {
- av_log(ctx, AV_LOG_ERROR, "Error parsing options string: %s.\n", args);
- goto fail;
+ if (!(s->sample_fmt_str || s->got_format_from_params)) {
+ av_log(ctx, AV_LOG_ERROR, "Sample format not provided\n");
+ return AVERROR(EINVAL);
}
+ if (s->sample_fmt_str)
+ s->sample_fmt = av_get_sample_fmt(s->sample_fmt_str);
- s->sample_fmt = av_get_sample_fmt(s->sample_fmt_str);
if (s->sample_fmt == AV_SAMPLE_FMT_NONE) {
av_log(ctx, AV_LOG_ERROR, "Invalid sample format %s.\n",
s->sample_fmt_str);
- ret = AVERROR(EINVAL);
- goto fail;
+ return AVERROR(EINVAL);
}
- s->channel_layout = av_get_channel_layout(s->channel_layout_str);
+ if (s->channel_layout_str)
+ s->channel_layout = av_get_channel_layout(s->channel_layout_str);
+
if (!s->channel_layout) {
av_log(ctx, AV_LOG_ERROR, "Invalid channel layout %s.\n",
s->channel_layout_str);
- ret = AVERROR(EINVAL);
- goto fail;
+ return AVERROR(EINVAL);
}
- if (!(s->fifo = av_fifo_alloc(sizeof(AVFilterBufferRef*)))) {
- ret = AVERROR(ENOMEM);
- goto fail;
- }
+ if (!(s->fifo = av_fifo_alloc(sizeof(AVFrame*))))
+ return AVERROR(ENOMEM);
if (!s->time_base.num)
s->time_base = (AVRational){1, s->sample_rate};
"ch layout:%s\n", s->time_base.num, s->time_base.den, s->sample_fmt_str,
s->sample_rate, s->channel_layout_str);
-fail:
- av_opt_free(s);
return ret;
}
{
BufferSourceContext *s = ctx->priv;
while (s->fifo && av_fifo_size(s->fifo)) {
- AVFilterBufferRef *buf;
- av_fifo_generic_read(s->fifo, &buf, sizeof(buf), NULL);
- avfilter_unref_buffer(buf);
+ AVFrame *frame;
+ av_fifo_generic_read(s->fifo, &frame, sizeof(frame), NULL);
+ av_frame_free(&frame);
}
+ av_buffer_unref(&s->hw_frames_ctx);
av_fifo_free(s->fifo);
s->fifo = NULL;
}
link->w = c->w;
link->h = c->h;
link->sample_aspect_ratio = c->pixel_aspect;
+
+ if (c->hw_frames_ctx) {
+ link->hw_frames_ctx = av_buffer_ref(c->hw_frames_ctx);
+ if (!link->hw_frames_ctx)
+ return AVERROR(ENOMEM);
+ }
break;
case AVMEDIA_TYPE_AUDIO:
link->channel_layout = c->channel_layout;
}
link->time_base = c->time_base;
+ link->frame_rate = c->frame_rate;
return 0;
}
static int request_frame(AVFilterLink *link)
{
BufferSourceContext *c = link->src->priv;
- AVFilterBufferRef *buf;
+ AVFrame *frame;
int ret = 0;
if (!av_fifo_size(c->fifo)) {
return AVERROR_EOF;
return AVERROR(EAGAIN);
}
- av_fifo_generic_read(c->fifo, &buf, sizeof(buf), NULL);
-
- switch (link->type) {
- case AVMEDIA_TYPE_VIDEO:
- if ((ret = ff_start_frame(link, avfilter_ref_buffer(buf, ~0))) < 0 ||
- (ret = ff_draw_slice(link, 0, link->h, 1)) < 0 ||
- (ret = ff_end_frame(link)) < 0)
- goto fail;
- break;
- case AVMEDIA_TYPE_AUDIO:
- ret = ff_filter_samples(link, avfilter_ref_buffer(buf, ~0));
- break;
- default:
- return AVERROR(EINVAL);
- }
+ av_fifo_generic_read(c->fifo, &frame, sizeof(frame), NULL);
-fail:
- avfilter_unref_buffer(buf);
+ ret = ff_filter_frame(link, frame);
return ret;
}
int size = av_fifo_size(c->fifo);
if (!size && c->eof)
return AVERROR_EOF;
- return size/sizeof(AVFilterBufferRef*);
+ return size/sizeof(AVFrame*);
}
-AVFilter avfilter_vsrc_buffer = {
+static const AVFilterPad avfilter_vsrc_buffer_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .request_frame = request_frame,
+ .poll_frame = poll_frame,
+ .config_props = config_props,
+ },
+ { NULL }
+};
+
+AVFilter ff_vsrc_buffer = {
.name = "buffer",
.description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them accessible to the filterchain."),
.priv_size = sizeof(BufferSourceContext),
+ .priv_class = &buffer_class,
.query_formats = query_formats,
.init = init_video,
.uninit = uninit,
- .inputs = (const AVFilterPad[]) {{ .name = NULL }},
- .outputs = (const AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .request_frame = request_frame,
- .poll_frame = poll_frame,
- .config_props = config_props, },
- { .name = NULL}},
+ .inputs = NULL,
+ .outputs = avfilter_vsrc_buffer_outputs,
+};
+
+static const AVFilterPad avfilter_asrc_abuffer_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .request_frame = request_frame,
+ .poll_frame = poll_frame,
+ .config_props = config_props,
+ },
+ { NULL }
};
-AVFilter avfilter_asrc_abuffer = {
+AVFilter ff_asrc_abuffer = {
.name = "abuffer",
.description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them accessible to the filterchain."),
.priv_size = sizeof(BufferSourceContext),
+ .priv_class = &abuffer_class,
.query_formats = query_formats,
.init = init_audio,
.uninit = uninit,
- .inputs = (const AVFilterPad[]) {{ .name = NULL }},
- .outputs = (const AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_AUDIO,
- .request_frame = request_frame,
- .poll_frame = poll_frame,
- .config_props = config_props, },
- { .name = NULL}},
+ .inputs = NULL,
+ .outputs = avfilter_asrc_abuffer_outputs,
};
projects / ffmpeg / blobdiff