* Filter layer - format negotiation
* Copyright (c) 2007 Bobby Bingham
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include "libavutil/eval.h"
#include "libavutil/pixdesc.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/audioconvert.h"
#include "avfilter.h"
#include "internal.h"
+#include "formats.h"
/**
* Add all refs from a to ret and destroy a.
*/
-static void merge_ref(AVFilterFormats *ret, AVFilterFormats *a)
-{
- int i;
-
- for(i = 0; i < a->refcount; i ++) {
- ret->refs[ret->refcount] = a->refs[i];
- *ret->refs[ret->refcount++] = ret;
- }
+#define MERGE_REF(ret, a, fmts, type, fail) \
+do { \
+ type ***tmp; \
+ int i; \
+ \
+ if (!(tmp = av_realloc(ret->refs, \
+ sizeof(*tmp) * (ret->refcount + a->refcount)))) \
+ goto fail; \
+ ret->refs = tmp; \
+ \
+ for (i = 0; i < a->refcount; i ++) { \
+ ret->refs[ret->refcount] = a->refs[i]; \
+ *ret->refs[ret->refcount++] = ret; \
+ } \
+ \
+ av_freep(&a->refs); \
+ av_freep(&a->fmts); \
+ av_freep(&a); \
+} while (0)
- av_free(a->refs);
- av_free(a->formats);
- av_free(a);
-}
+/**
+ * Add all formats common for a and b to ret, copy the refs and destroy
+ * a and b.
+ */
+#define MERGE_FORMATS(ret, a, b, fmts, nb, type, fail) \
+do { \
+ int i, j, k = 0, count = FFMIN(a->nb, b->nb); \
+ \
+ if (!(ret = av_mallocz(sizeof(*ret)))) \
+ goto fail; \
+ \
+ if (count) { \
+ if (!(ret->fmts = av_malloc(sizeof(*ret->fmts) * count))) \
+ goto fail; \
+ for (i = 0; i < a->nb; i++) \
+ for (j = 0; j < b->nb; j++) \
+ if (a->fmts[i] == b->fmts[j]) { \
+ if(k >= FFMIN(a->nb, b->nb)){ \
+ av_log(0, AV_LOG_ERROR, "Duplicate formats in avfilter_merge_formats() detected\n"); \
+ av_free(ret->fmts); \
+ av_free(ret); \
+ return NULL; \
+ } \
+ ret->fmts[k++] = a->fmts[i]; \
+ } \
+ } \
+ ret->nb = k; \
+ /* check that there was at least one common format */ \
+ if (!ret->nb) \
+ goto fail; \
+ \
+ MERGE_REF(ret, a, fmts, type, fail); \
+ MERGE_REF(ret, b, fmts, type, fail); \
+} while (0)
AVFilterFormats *avfilter_merge_formats(AVFilterFormats *a, AVFilterFormats *b)
{
- AVFilterFormats *ret;
- unsigned i, j, k = 0, m_count;
+ AVFilterFormats *ret = NULL;
if (a == b)
return a;
- ret = av_mallocz(sizeof(*ret));
-
- /* merge list of formats */
- m_count = FFMIN(a->format_count, b->format_count);
- if (m_count) {
- ret->formats = av_malloc(sizeof(*ret->formats) * m_count);
- for(i = 0; i < a->format_count; i ++)
- for(j = 0; j < b->format_count; j ++)
- if(a->formats[i] == b->formats[j])
- ret->formats[k++] = a->formats[i];
+ MERGE_FORMATS(ret, a, b, formats, format_count, AVFilterFormats, fail);
- ret->format_count = k;
+ return ret;
+fail:
+ if (ret) {
+ av_freep(&ret->refs);
+ av_freep(&ret->formats);
}
- /* check that there was at least one common format */
- if(!ret->format_count) {
- av_free(ret->formats);
- av_free(ret);
- return NULL;
+ av_freep(&ret);
+ return NULL;
+}
+
+AVFilterFormats *ff_merge_samplerates(AVFilterFormats *a,
+ AVFilterFormats *b)
+{
+ AVFilterFormats *ret = NULL;
+
+ if (a == b) return a;
+
+ if (a->format_count && b->format_count) {
+ MERGE_FORMATS(ret, a, b, formats, format_count, AVFilterFormats, fail);
+ } else if (a->format_count) {
+ MERGE_REF(a, b, formats, AVFilterFormats, fail);
+ ret = a;
+ } else {
+ MERGE_REF(b, a, formats, AVFilterFormats, fail);
+ ret = b;
}
- ret->refs = av_malloc(sizeof(*ret->refs) * (a->refcount + b->refcount));
+ return ret;
+fail:
+ if (ret) {
+ av_freep(&ret->refs);
+ av_freep(&ret->formats);
+ }
+ av_freep(&ret);
+ return NULL;
+}
- merge_ref(ret, a);
- merge_ref(ret, b);
+AVFilterChannelLayouts *ff_merge_channel_layouts(AVFilterChannelLayouts *a,
+ AVFilterChannelLayouts *b)
+{
+ AVFilterChannelLayouts *ret = NULL;
+
+ if (a == b) return a;
+
+ if (a->nb_channel_layouts && b->nb_channel_layouts) {
+ MERGE_FORMATS(ret, a, b, channel_layouts, nb_channel_layouts,
+ AVFilterChannelLayouts, fail);
+ } else if (a->nb_channel_layouts) {
+ MERGE_REF(a, b, channel_layouts, AVFilterChannelLayouts, fail);
+ ret = a;
+ } else {
+ MERGE_REF(b, a, channel_layouts, AVFilterChannelLayouts, fail);
+ ret = b;
+ }
return ret;
+fail:
+ if (ret) {
+ av_freep(&ret->refs);
+ av_freep(&ret->channel_layouts);
+ }
+ av_freep(&ret);
+ return NULL;
}
int ff_fmt_is_in(int fmt, const int *fmts)
{
const int *p;
- for (p = fmts; *p != PIX_FMT_NONE; p++) {
+ for (p = fmts; *p != -1; p++) {
if (fmt == *p)
return 1;
}
return 0;
}
-AVFilterFormats *avfilter_make_format_list(const int *fmts)
+#define COPY_INT_LIST(list_copy, list, type) { \
+ int count = 0; \
+ if (list) \
+ for (count = 0; list[count] != -1; count++) \
+ ; \
+ list_copy = av_calloc(count+1, sizeof(type)); \
+ if (list_copy) { \
+ memcpy(list_copy, list, sizeof(type) * count); \
+ list_copy[count] = -1; \
+ } \
+}
+
+int *ff_copy_int_list(const int * const list)
{
- AVFilterFormats *formats;
- int count;
+ int *ret = NULL;
+ COPY_INT_LIST(ret, list, int);
+ return ret;
+}
- for (count = 0; fmts[count] != -1; count++)
- ;
+int64_t *ff_copy_int64_list(const int64_t * const list)
+{
+ int64_t *ret = NULL;
+ COPY_INT_LIST(ret, list, int64_t);
+ return ret;
+}
- formats = av_mallocz(sizeof(*formats));
- if (count)
- formats->formats = av_malloc(sizeof(*formats->formats) * count);
- formats->format_count = count;
- memcpy(formats->formats, fmts, sizeof(*formats->formats) * count);
+#define MAKE_FORMAT_LIST(type, field, count_field) \
+ type *formats; \
+ int count = 0; \
+ if (fmts) \
+ for (count = 0; fmts[count] != -1; count++) \
+ ; \
+ formats = av_mallocz(sizeof(*formats)); \
+ if (!formats) return NULL; \
+ formats->count_field = count; \
+ if (count) { \
+ formats->field = av_malloc(sizeof(*formats->field)*count); \
+ if (!formats->field) { \
+ av_free(formats); \
+ return NULL; \
+ } \
+ }
+
+AVFilterFormats *avfilter_make_format_list(const int *fmts)
+{
+ MAKE_FORMAT_LIST(AVFilterFormats, formats, format_count);
+ while (count--)
+ formats->formats[count] = fmts[count];
return formats;
}
-int avfilter_add_format(AVFilterFormats **avff, int fmt)
+AVFilterChannelLayouts *avfilter_make_format64_list(const int64_t *fmts)
{
- int *fmts;
+ MAKE_FORMAT_LIST(AVFilterChannelLayouts,
+ channel_layouts, nb_channel_layouts);
+ if (count)
+ memcpy(formats->channel_layouts, fmts,
+ sizeof(*formats->channel_layouts) * count);
- if (!(*avff) && !(*avff = av_mallocz(sizeof(**avff))))
- return AVERROR(ENOMEM);
+ return formats;
+}
- fmts = av_realloc((*avff)->formats,
- sizeof(*(*avff)->formats) * ((*avff)->format_count+1));
- if (!fmts)
- return AVERROR(ENOMEM);
+#define ADD_FORMAT(f, fmt, type, list, nb) \
+do { \
+ type *fmts; \
+ \
+ if (!(*f) && !(*f = av_mallocz(sizeof(**f)))) \
+ return AVERROR(ENOMEM); \
+ \
+ fmts = av_realloc((*f)->list, \
+ sizeof(*(*f)->list) * ((*f)->nb + 1));\
+ if (!fmts) \
+ return AVERROR(ENOMEM); \
+ \
+ (*f)->list = fmts; \
+ (*f)->list[(*f)->nb++] = fmt; \
+ return 0; \
+} while (0)
+
+int avfilter_add_format(AVFilterFormats **avff, int64_t fmt)
+{
+ ADD_FORMAT(avff, fmt, int, formats, format_count);
+}
- (*avff)->formats = fmts;
- (*avff)->formats[(*avff)->format_count++] = fmt;
- return 0;
+int ff_add_channel_layout(AVFilterChannelLayouts **l, uint64_t channel_layout)
+{
+ ADD_FORMAT(l, channel_layout, uint64_t, channel_layouts, nb_channel_layouts);
}
+#if FF_API_OLD_ALL_FORMATS_API
AVFilterFormats *avfilter_all_formats(enum AVMediaType type)
+{
+ return avfilter_make_all_formats(type);
+}
+#endif
+
+AVFilterFormats *avfilter_make_all_formats(enum AVMediaType type)
{
AVFilterFormats *ret = NULL;
int fmt;
return ret;
}
-void avfilter_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
+const int64_t avfilter_all_channel_layouts[] = {
+#include "all_channel_layouts.inc"
+ -1
+};
+
+// AVFilterFormats *avfilter_make_all_channel_layouts(void)
+// {
+// return avfilter_make_format64_list(avfilter_all_channel_layouts);
+// }
+
+#if FF_API_PACKING
+AVFilterFormats *avfilter_make_all_packing_formats(void)
{
- *ref = f;
- f->refs = av_realloc(f->refs, sizeof(*f->refs) * ++f->refcount);
- f->refs[f->refcount-1] = ref;
+ static const int packing[] = {
+ AVFILTER_PACKED,
+ AVFILTER_PLANAR,
+ -1,
+ };
+
+ return avfilter_make_format_list(packing);
}
+#endif
-static int find_ref_index(AVFilterFormats **ref)
+AVFilterFormats *ff_all_samplerates(void)
{
- int i;
- for(i = 0; i < (*ref)->refcount; i ++)
- if((*ref)->refs[i] == ref)
- return i;
- return -1;
+ AVFilterFormats *ret = av_mallocz(sizeof(*ret));
+ return ret;
}
-void avfilter_formats_unref(AVFilterFormats **ref)
+AVFilterChannelLayouts *ff_all_channel_layouts(void)
{
- int idx;
+ AVFilterChannelLayouts *ret = av_mallocz(sizeof(*ret));
+ return ret;
+}
- if (!*ref)
- return;
+#define FORMATS_REF(f, ref) \
+do { \
+ *ref = f; \
+ f->refs = av_realloc(f->refs, sizeof(*f->refs) * ++f->refcount); \
+ f->refs[f->refcount-1] = ref; \
+} while (0)
- idx = find_ref_index(ref);
+void ff_channel_layouts_ref(AVFilterChannelLayouts *f, AVFilterChannelLayouts **ref)
+{
+ FORMATS_REF(f, ref);
+}
- if(idx >= 0)
- memmove((*ref)->refs + idx, (*ref)->refs + idx + 1,
- sizeof(*(*ref)->refs) * ((*ref)->refcount - idx - 1));
+void avfilter_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
+{
+ FORMATS_REF(f, ref);
+}
- if(!--(*ref)->refcount) {
- av_free((*ref)->formats);
- av_free((*ref)->refs);
- av_free(*ref);
- }
- *ref = NULL;
+#define FIND_REF_INDEX(ref, idx) \
+do { \
+ int i; \
+ for (i = 0; i < (*ref)->refcount; i ++) \
+ if((*ref)->refs[i] == ref) { \
+ idx = i; \
+ break; \
+ } \
+} while (0)
+
+#define FORMATS_UNREF(ref, list) \
+do { \
+ int idx = -1; \
+ \
+ if (!*ref) \
+ return; \
+ \
+ FIND_REF_INDEX(ref, idx); \
+ \
+ if (idx >= 0) \
+ memmove((*ref)->refs + idx, (*ref)->refs + idx + 1, \
+ sizeof(*(*ref)->refs) * ((*ref)->refcount - idx - 1)); \
+ \
+ if(!--(*ref)->refcount) { \
+ av_free((*ref)->list); \
+ av_free((*ref)->refs); \
+ av_free(*ref); \
+ } \
+ *ref = NULL; \
+} while (0)
+
+void avfilter_formats_unref(AVFilterFormats **ref)
+{
+ FORMATS_UNREF(ref, formats);
+}
+
+void ff_channel_layouts_unref(AVFilterChannelLayouts **ref)
+{
+ FORMATS_UNREF(ref, channel_layouts);
+}
+
+#define FORMATS_CHANGEREF(oldref, newref) \
+do { \
+ int idx = -1; \
+ \
+ FIND_REF_INDEX(oldref, idx); \
+ \
+ if (idx >= 0) { \
+ (*oldref)->refs[idx] = newref; \
+ *newref = *oldref; \
+ *oldref = NULL; \
+ } \
+} while (0)
+
+void ff_channel_layouts_changeref(AVFilterChannelLayouts **oldref,
+ AVFilterChannelLayouts **newref)
+{
+ FORMATS_CHANGEREF(oldref, newref);
}
void avfilter_formats_changeref(AVFilterFormats **oldref,
AVFilterFormats **newref)
{
- int idx = find_ref_index(oldref);
+ FORMATS_CHANGEREF(oldref, newref);
+}
+
+#define SET_COMMON_FORMATS(ctx, fmts, in_fmts, out_fmts, ref, list) \
+{ \
+ int count = 0, i; \
+ \
+ for (i = 0; i < ctx->input_count; i++) { \
+ if (ctx->inputs[i]) { \
+ ref(fmts, &ctx->inputs[i]->out_fmts); \
+ count++; \
+ } \
+ } \
+ for (i = 0; i < ctx->output_count; i++) { \
+ if (ctx->outputs[i]) { \
+ ref(fmts, &ctx->outputs[i]->in_fmts); \
+ count++; \
+ } \
+ } \
+ \
+ if (!count) { \
+ av_freep(&fmts->list); \
+ av_freep(&fmts->refs); \
+ av_freep(&fmts); \
+ } \
+}
+
+void ff_set_common_channel_layouts(AVFilterContext *ctx,
+ AVFilterChannelLayouts *layouts)
+{
+ SET_COMMON_FORMATS(ctx, layouts, in_channel_layouts, out_channel_layouts,
+ ff_channel_layouts_ref, channel_layouts);
+}
+
+void ff_set_common_samplerates(AVFilterContext *ctx,
+ AVFilterFormats *samplerates)
+{
+ SET_COMMON_FORMATS(ctx, samplerates, in_samplerates, out_samplerates,
+ avfilter_formats_ref, formats);
+}
+
+/**
+ * A helper for query_formats() which sets all links to the same list of
+ * formats. If there are no links hooked to this filter, the list of formats is
+ * freed.
+ */
+void avfilter_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
+{
+ SET_COMMON_FORMATS(ctx, formats, in_formats, out_formats,
+ avfilter_formats_ref, formats);
+}
+
+int avfilter_default_query_formats(AVFilterContext *ctx)
+{
+ enum AVMediaType type = ctx->inputs && ctx->inputs [0] ? ctx->inputs [0]->type :
+ ctx->outputs && ctx->outputs[0] ? ctx->outputs[0]->type :
+ AVMEDIA_TYPE_VIDEO;
+
+ avfilter_set_common_formats(ctx, avfilter_all_formats(type));
+ if (type == AVMEDIA_TYPE_AUDIO) {
+ ff_set_common_channel_layouts(ctx, ff_all_channel_layouts());
+ ff_set_common_samplerates(ctx, ff_all_samplerates());
+ }
+
+ return 0;
+}
+
+/* internal functions for parsing audio format arguments */
+
+int ff_parse_pixel_format(enum PixelFormat *ret, const char *arg, void *log_ctx)
+{
+ char *tail;
+ int pix_fmt = av_get_pix_fmt(arg);
+ if (pix_fmt == PIX_FMT_NONE) {
+ pix_fmt = strtol(arg, &tail, 0);
+ if (*tail || (unsigned)pix_fmt >= PIX_FMT_NB) {
+ av_log(log_ctx, AV_LOG_ERROR, "Invalid pixel format '%s'\n", arg);
+ return AVERROR(EINVAL);
+ }
+ }
+ *ret = pix_fmt;
+ return 0;
+}
+
+int ff_parse_sample_format(int *ret, const char *arg, void *log_ctx)
+{
+ char *tail;
+ int sfmt = av_get_sample_fmt(arg);
+ if (sfmt == AV_SAMPLE_FMT_NONE) {
+ sfmt = strtol(arg, &tail, 0);
+ if (*tail || (unsigned)sfmt >= AV_SAMPLE_FMT_NB) {
+ av_log(log_ctx, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
+ return AVERROR(EINVAL);
+ }
+ }
+ *ret = sfmt;
+ return 0;
+}
+
+int ff_parse_time_base(AVRational *ret, const char *arg, void *log_ctx)
+{
+ AVRational r;
+ if(av_parse_ratio(&r, arg, INT_MAX, 0, log_ctx) < 0 ||r.num<=0 ||r.den<=0) {
+ av_log(log_ctx, AV_LOG_ERROR, "Invalid time base '%s'\n", arg);
+ return AVERROR(EINVAL);
+ }
+ *ret = r;
+ return 0;
+}
+
+int ff_parse_sample_rate(int *ret, const char *arg, void *log_ctx)
+{
+ char *tail;
+ double srate = av_strtod(arg, &tail);
+ if (*tail || srate < 1 || (int)srate != srate || srate > INT_MAX) {
+ av_log(log_ctx, AV_LOG_ERROR, "Invalid sample rate '%s'\n", arg);
+ return AVERROR(EINVAL);
+ }
+ *ret = srate;
+ return 0;
+}
+
+int ff_parse_channel_layout(int64_t *ret, const char *arg, void *log_ctx)
+{
+ char *tail;
+ int64_t chlayout = av_get_channel_layout(arg);
+ if (chlayout == 0) {
+ chlayout = strtol(arg, &tail, 10);
+ if (*tail || chlayout == 0) {
+ av_log(log_ctx, AV_LOG_ERROR, "Invalid channel layout '%s'\n", arg);
+ return AVERROR(EINVAL);
+ }
+ }
+ *ret = chlayout;
+ return 0;
+}
+
+#ifdef TEST
- if(idx >= 0) {
- (*oldref)->refs[idx] = newref;
- *newref = *oldref;
- *oldref = NULL;
+#undef printf
+
+int main(void)
+{
+ const int64_t *cl;
+ char buf[512];
+
+ for (cl = avfilter_all_channel_layouts; *cl != -1; cl++) {
+ av_get_channel_layout_string(buf, sizeof(buf), -1, *cl);
+ printf("%s\n", buf);
}
+
+ return 0;
}
+
+#endif
+
projects / ffmpeg / blobdiff